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a3469b37-960a-4df9-9ec9-22a778c22781
from-the-string-landscape-to-the-mathematical
2202.06086
null
https://arxiv.org/abs/2202.06086v1
https://arxiv.org/pdf/2202.06086v1.pdf
From the String Landscape to the Mathematical Landscape: a Machine-Learning Outlook
We review the recent programme of using machine-learning to explore the landscape of mathematical problems. With this paradigm as a model for human intuition - complementary to and in contrast with the more formalistic approach of automated theorem proving - we highlight some experiments on how AI helps with conjecture formulation, pattern recognition and computation.
['Yang-Hui He']
2022-02-12
null
null
null
null
['automated-theorem-proving', 'automated-theorem-proving']
['miscellaneous', 'reasoning']
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[8.890679359436035, 6.963185787200928]
edc526ef-d5c3-44ef-8794-38add614c3bc
universal-dependencies-and-morphology-for
null
null
https://aclanthology.org/E17-1034
https://aclanthology.org/E17-1034.pdf
Universal Dependencies and Morphology for Hungarian - and on the Price of Universality
In this paper, we present how the principles of universal dependencies and morphology have been adapted to Hungarian. We report the most challenging grammatical phenomena and our solutions to those. On the basis of the adapted guidelines, we have converted and manually corrected 1,800 sentences from the Szeged Treebank to universal dependency format. We also introduce experiments on this manually annotated corpus for evaluating automatic conversion and the added value of language-specific, i.e. non-universal, annotations. Our results reveal that converting to universal dependencies is not necessarily trivial, moreover, using language-specific morphological features may have an impact on overall performance.
["Rich{\\'a}rd Farkas", "Zsolt Sz{\\'a}nt{\\'o}", "Katalin Simk{\\'o}", 'Veronika Vincze']
2017-04-01
null
null
null
eacl-2017-4
['morphological-tagging']
['natural-language-processing']
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[10.388339042663574, 10.112144470214844]
47b307ce-b573-454f-8d92-d4919620df27
bev-mae-bird-s-eye-view-masked-autoencoders
2212.05758
null
https://arxiv.org/abs/2212.05758v1
https://arxiv.org/pdf/2212.05758v1.pdf
BEV-MAE: Bird's Eye View Masked Autoencoders for Outdoor Point Cloud Pre-training
Current outdoor LiDAR-based 3D object detection methods mainly adopt the training-from-scratch paradigm. Unfortunately, this paradigm heavily relies on large-scale labeled data, whose collection can be expensive and time-consuming. Self-supervised pre-training is an effective and desirable way to alleviate this dependence on extensive annotated data. Recently, masked modeling has become a successful self-supervised learning approach for point clouds. However, current works mainly focus on synthetic or indoor datasets. When applied to large-scale and sparse outdoor point clouds, they fail to yield satisfactory results. In this work, we present BEV-MAE, a simple masked autoencoder pre-training framework for 3D object detection on outdoor point clouds. Specifically, we first propose a bird's eye view (BEV) guided masking strategy to guide the 3D encoder learning feature representation in a BEV perspective and avoid complex decoder design during pre-training. Besides, we introduce a learnable point token to maintain a consistent receptive field size of the 3D encoder with fine-tuning for masked point cloud inputs. Finally, based on the property of outdoor point clouds, i.e., the point clouds of distant objects are more sparse, we propose point density prediction to enable the 3D encoder to learn location information, which is essential for object detection. Experimental results show that BEV-MAE achieves new state-of-the-art self-supervised results on both Waymo and nuScenes with diverse 3D object detectors. Furthermore, with only 20% data and 7% training cost during pre-training, BEV-MAE achieves comparable performance with the state-of-the-art method ProposalContrast. The source code and pre-trained models will be made publicly available.
['Yongtao Wang', 'Zhiwei Lin']
2022-12-12
null
null
null
null
['point-cloud-pre-training']
['computer-vision']
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[7.816186904907227, -2.9499926567077637]
118a7576-e4e5-441b-b2a1-d0e9035a1ec1
pic-a-phrase-in-context-dataset-for-phrase
2207.09068
null
https://arxiv.org/abs/2207.09068v5
https://arxiv.org/pdf/2207.09068v5.pdf
PiC: A Phrase-in-Context Dataset for Phrase Understanding and Semantic Search
While contextualized word embeddings have been a de-facto standard, learning contextualized phrase embeddings is less explored and being hindered by the lack of a human-annotated benchmark that tests machine understanding of phrase semantics given a context sentence or paragraph (instead of phrases alone). To fill this gap, we propose PiC -- a dataset of ~28K of noun phrases accompanied by their contextual Wikipedia pages and a suite of three tasks for training and evaluating phrase embeddings. Training on PiC improves ranking models' accuracy and remarkably pushes span-selection (SS) models (i.e., predicting the start and end index of the target phrase) near-human accuracy, which is 95% Exact Match (EM) on semantic search given a query phrase and a passage. Interestingly, we find evidence that such impressive performance is because the SS models learn to better capture the common meaning of a phrase regardless of its actual context. SotA models perform poorly in distinguishing two senses of the same phrase in two contexts (~60% EM) and in estimating the similarity between two different phrases in the same context (~70% EM).
['Anh Nguyen', 'Trung Bui', 'Seunghyun Yoon', 'Thang M. Pham']
2022-07-19
null
null
null
null
['semantic-retrieval']
['natural-language-processing']
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[10.538680076599121, 8.74164867401123]
8d193ba5-c800-4001-9fa4-c823939cecb7
fourier-rnns-for-modelling-noisy-physics-data
2302.06534
null
https://arxiv.org/abs/2302.06534v1
https://arxiv.org/pdf/2302.06534v1.pdf
Fourier-RNNs for Modelling Noisy Physics Data
Classical sequential models employed in time-series prediction rely on learning the mappings from the past to the future instances by way of a hidden state. The Hidden states characterise the historical information and encode the required temporal dependencies. However, most existing sequential models operate within finite-dimensional Euclidean spaces which offer limited functionality when employed in modelling physics relevant data. Alternatively recent work with neural operator learning within the Fourier space has shown efficient strategies for parameterising Partial Differential Equations (PDE). In this work, we propose a novel sequential model, built to handle Physics relevant data by way of amalgamating the conventional RNN architecture with that of the Fourier Neural Operators (FNO). The Fourier-RNN allows for learning the mappings from the input to the output as well as to the hidden state within the Fourier space associated with the temporal data. While the Fourier-RNN performs identical to the FNO when handling PDE data, it outperforms the FNO and the conventional RNN when deployed in modelling noisy, non-Markovian data.
['Lorenzo Zanisi', 'Stanislas Pamela', 'Vignesh Gopakumar']
2023-02-13
null
null
null
null
['time-series-prediction']
['time-series']
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[6.947344779968262, 3.350409984588623]
2f22a726-2f47-475d-9d92-da9e02da167c
higher-order-implicit-fairing-networks-for-3d
2111.00950
null
https://arxiv.org/abs/2111.00950v1
https://arxiv.org/pdf/2111.00950v1.pdf
Higher-Order Implicit Fairing Networks for 3D Human Pose Estimation
Estimating a 3D human pose has proven to be a challenging task, primarily because of the complexity of the human body joints, occlusions, and variability in lighting conditions. In this paper, we introduce a higher-order graph convolutional framework with initial residual connections for 2D-to-3D pose estimation. Using multi-hop neighborhoods for node feature aggregation, our model is able to capture the long-range dependencies between body joints. Moreover, our approach leverages residual connections, which are integrated by design in our network architecture, ensuring that the learned feature representations retain important information from the initial features of the input layer as the network depth increases. Experiments and ablations studies conducted on two standard benchmarks demonstrate the effectiveness of our model, achieving superior performance over strong baseline methods for 3D human pose estimation.
['A. Ben Hamza', 'Jianning Quan']
2021-11-01
null
null
null
null
['3d-pose-estimation']
['computer-vision']
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[6.99744987487793, -0.7798519730567932]
c571dff5-1900-49ba-9ca3-37f4fad3f42f
better-low-resource-entity-recognition
2305.13582
null
https://arxiv.org/abs/2305.13582v2
https://arxiv.org/pdf/2305.13582v2.pdf
Better Low-Resource Entity Recognition Through Translation and Annotation Fusion
Pre-trained multilingual language models have enabled significant advancements in cross-lingual transfer. However, these models often exhibit a performance disparity when transferring from high-resource languages to low-resource languages, especially for languages that are underrepresented or not in the pre-training data. Motivated by the superior performance of these models on high-resource languages compared to low-resource languages, we introduce a Translation-and-fusion framework, which translates low-resource language text into a high-resource language for annotation using fully supervised models before fusing the annotations back into the low-resource language. Based on this framework, we present TransFusion, a model trained to fuse predictions from a high-resource language to make robust predictions on low-resource languages. We evaluate our methods on two low-resource named entity recognition (NER) datasets, MasakhaNER2.0 and LORELEI NER, covering 25 languages, and show consistent improvement up to +16 F$_1$ over English fine-tuning systems, achieving state-of-the-art performance compared to Translate-train systems. Our analysis depicts the unique advantages of the TransFusion method which is robust to translation errors and source language prediction errors, and complimentary to adapted multilingual language models.
['Alan Ritter', 'Vedaant Shah', 'Yang Chen']
2023-05-23
null
null
null
null
['named-entity-recognition-ner', 'low-resource-named-entity-recognition', 'cross-lingual-transfer']
['natural-language-processing', 'natural-language-processing', 'natural-language-processing']
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[10.708081245422363, 9.934703826904297]
2dc7e91c-f88b-4f5b-82b7-3e04223dea9c
robust-multi-agent-coordination-via
2305.05909
null
https://arxiv.org/abs/2305.05909v1
https://arxiv.org/pdf/2305.05909v1.pdf
Robust multi-agent coordination via evolutionary generation of auxiliary adversarial attackers
Cooperative multi-agent reinforcement learning (CMARL) has shown to be promising for many real-world applications. Previous works mainly focus on improving coordination ability via solving MARL-specific challenges (e.g., non-stationarity, credit assignment, scalability), but ignore the policy perturbation issue when testing in a different environment. This issue hasn't been considered in problem formulation or efficient algorithm design. To address this issue, we firstly model the problem as a limited policy adversary Dec-POMDP (LPA-Dec-POMDP), where some coordinators from a team might accidentally and unpredictably encounter a limited number of malicious action attacks, but the regular coordinators still strive for the intended goal. Then, we propose Robust Multi-Agent Coordination via Evolutionary Generation of Auxiliary Adversarial Attackers (ROMANCE), which enables the trained policy to encounter diversified and strong auxiliary adversarial attacks during training, thus achieving high robustness under various policy perturbations. Concretely, to avoid the ego-system overfitting to a specific attacker, we maintain a set of attackers, which is optimized to guarantee the attackers high attacking quality and behavior diversity. The goal of quality is to minimize the ego-system coordination effect, and a novel diversity regularizer based on sparse action is applied to diversify the behaviors among attackers. The ego-system is then paired with a population of attackers selected from the maintained attacker set, and alternately trained against the constantly evolving attackers. Extensive experiments on multiple scenarios from SMAC indicate our ROMANCE provides comparable or better robustness and generalization ability than other baselines.
['Yang Yu', 'Chao Qian', 'Li-He Li', 'Cong Guan', 'Feng Chen', 'Hao Yin', 'Ke Xue', 'Zi-Qian Zhang', 'Lei Yuan']
2023-05-10
null
null
null
null
['multi-agent-reinforcement-learning', 'smac-1', 'smac']
['methodology', 'playing-games', 'playing-games']
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[3.7970683574676514, 2.2970290184020996]
b82f9024-1b9c-4749-b94d-818b84177aa8
fast-classification-of-small-x-ray-1
null
null
https://www.nature.com/articles/s41524-019-0196-x
https://www.nature.com/articles/s41524-019-0196-x.pdf
Fast classification of small X-ray diffraction datasets using data augmentation and deep neural networks
X-ray diffraction (XRD) data acquisition and analysis is among the most time-consuming steps in the development cycle of novel thin-film materials. We propose a machine learning-enabled approach to predict crystallographic dimensionality and space group from a limited number of thin-film XRD patterns. We overcome the scarce data problem intrinsic to novel materials development by coupling a supervised machine learning approach with a model-agnostic, physics-informed data augmentation strategy using simulated data from the Inorganic Crystal Structure Database (ICSD) and experimental data. As a test case, 115 thin-film metal-halides spanning three dimensionalities and seven space groups are synthesized and classified. After testing various algorithms, we develop and implement an all convolutional neural network, with cross-validated accuracies for dimensionality and space group classification of 93 and 89%, respectively. We propose average class activation maps, computed from a global average pooling layer, to allow high model interpretability by human experimentalists, elucidating the root causes of misclassification. Finally, we systematically evaluate the maximum XRD pattern step size (data acquisition rate) before loss of predictive accuracy occurs, and determine it to be 0.16° 2θ, which enables an XRD pattern to be obtained and classified in 5.5 min or less.
['Giuseppe Romano', 'Siyu I. P. Tian', 'Aaron Gilad Kusne', 'Tonio Buonassisi', 'Noor Titan Putri Hartono', 'Felipe Oviedo', 'Charles Settens', 'Brian L. DeCost', 'Zhe Liu', 'Savitha Ramasamy', 'Zekun Ren', 'Shijing Sun']
2019-05-17
null
null
null
npj-computational-materials-2019-5
['material-classification', 'material-recognition', 'x-ray-diffraction']
['computer-vision', 'computer-vision', 'miscellaneous']
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[5.21409797668457, 5.335574626922607]
cd8629eb-2ac0-4a46-a2ba-a9c995051be1
task-prior-conditional-variational-auto
2205.15014
null
https://arxiv.org/abs/2205.15014v1
https://arxiv.org/pdf/2205.15014v1.pdf
Task-Prior Conditional Variational Auto-Encoder for Few-Shot Image Classification
Transductive methods always outperform inductive methods in few-shot image classification scenarios. However, the existing few-shot methods contain a latent condition: the number of samples in each class is the same, which may be unrealistic. To cope with those cases where the query shots of each class are nonuniform (i.e. nonuniform few-shot learning), we propose a Task-Prior Conditional Variational Auto-Encoder model named TP-VAE, conditioned on support shots and constrained by a task-level prior regularization. Our method obtains high performance in the more challenging nonuniform few-shot scenarios. Moreover, our method outperforms the state-of-the-art in a wide range of standard few-shot image classification scenarios. Among them, the accuracy of 1-shot increased by about 3\%.
['Zaiyun Yang']
2022-05-30
null
null
null
null
['few-shot-image-classification']
['computer-vision']
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[10.006508827209473, 2.9332520961761475]
886bff8f-5861-446c-9bcf-59647e008ea8
invariant-slot-attention-object-discovery
2302.04973
null
https://arxiv.org/abs/2302.04973v1
https://arxiv.org/pdf/2302.04973v1.pdf
Invariant Slot Attention: Object Discovery with Slot-Centric Reference Frames
Automatically discovering composable abstractions from raw perceptual data is a long-standing challenge in machine learning. Recent slot-based neural networks that learn about objects in a self-supervised manner have made exciting progress in this direction. However, they typically fall short at adequately capturing spatial symmetries present in the visual world, which leads to sample inefficiency, such as when entangling object appearance and pose. In this paper, we present a simple yet highly effective method for incorporating spatial symmetries via slot-centric reference frames. We incorporate equivariance to per-object pose transformations into the attention and generation mechanism of Slot Attention by translating, scaling, and rotating position encodings. These changes result in little computational overhead, are easy to implement, and can result in large gains in terms of data efficiency and overall improvements to object discovery. We evaluate our method on a wide range of synthetic object discovery benchmarks namely CLEVR, Tetrominoes, CLEVRTex, Objects Room and MultiShapeNet, and show promising improvements on the challenging real-world Waymo Open dataset.
['Thomas Kipf', 'Aravindh Mahendran', 'Gamaleldin F. Elsayed', 'Mehdi S. M. Sajjadi', 'Sjoerd van Steenkiste', 'Ondrej Biza']
2023-02-09
null
null
null
null
['object-discovery']
['computer-vision']
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[7.795662879943848, -2.7174532413482666]
98de3c0b-96c6-4aa9-a336-9c4270d59448
speech-emotion-diarization-which-emotion
2306.12991
null
https://arxiv.org/abs/2306.12991v1
https://arxiv.org/pdf/2306.12991v1.pdf
Speech Emotion Diarization: Which Emotion Appears When?
Speech Emotion Recognition (SER) typically relies on utterance-level solutions. However, emotions conveyed through speech should be considered as discrete speech events with definite temporal boundaries, rather than attributes of the entire utterance. To reflect the fine-grained nature of speech emotions, we propose a new task: Speech Emotion Diarization (SED). Just as Speaker Diarization answers the question of "Who speaks when?", Speech Emotion Diarization answers the question of "Which emotion appears when?". To facilitate the evaluation of the performance and establish a common benchmark for researchers, we introduce the Zaion Emotion Dataset (ZED), an openly accessible speech emotion dataset that includes non-acted emotions recorded in real-life conditions, along with manually-annotated boundaries of emotion segments within the utterance. We provide competitive baselines and open-source the code and the pre-trained models.
['Alya Yacoubi', 'Alaa Nfissi', 'Mirco Ravanelli', 'Yingzhi Wang']
2023-06-22
null
null
null
null
['speaker-diarization', 'speech-emotion-recognition']
['speech', 'speech']
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[13.40550422668457, 5.9009504318237305]
fe3c4732-92a4-4656-b8c0-ef2befc5cfd0
dense-cnn-learning-with-equivalent-mappings
1605.07251
null
http://arxiv.org/abs/1605.07251v1
http://arxiv.org/pdf/1605.07251v1.pdf
Dense CNN Learning with Equivalent Mappings
Large receptive field and dense prediction are both important for achieving high accuracy in pixel labeling tasks such as semantic segmentation. These two properties, however, contradict with each other. A pooling layer (with stride 2) quadruples the receptive field size but reduces the number of predictions to 25\%. Some existing methods lead to dense predictions using computations that are not equivalent to the original model. In this paper, we propose the equivalent convolution (eConv) and equivalent pooling (ePool) layers, leading to predictions that are both dense and equivalent to the baseline CNN model. Dense prediction models learned using eConv and ePool can transfer the baseline CNN's parameters as a starting point, and can inverse transfer the learned parameters in a dense model back to the original one, which has both fast testing speed and high accuracy. The proposed eConv and ePool layers have achieved higher accuracy than baseline CNN in various tasks, including semantic segmentation, object localization, image categorization and apparent age estimation, not only in those tasks requiring dense pixel labeling.
['Jian-Hao Luo', 'Chen-Wei Xie', 'Jianxin Wu']
2016-05-24
null
null
null
null
['image-categorization']
['computer-vision']
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[9.49726676940918, 0.31758517026901245]
425e45e7-a35f-49cd-aab2-37d401df4003
network-cooperation-with-progressive
2002.11919
null
https://arxiv.org/abs/2002.11919v1
https://arxiv.org/pdf/2002.11919v1.pdf
Network Cooperation with Progressive Disambiguation for Partial Label Learning
Partial Label Learning (PLL) aims to train a classifier when each training instance is associated with a set of candidate labels, among which only one is correct but is not accessible during the training phase. The common strategy dealing with such ambiguous labeling information is to disambiguate the candidate label sets. Nonetheless, existing methods ignore the disambiguation difficulty of instances and adopt the single-trend training mechanism. The former would lead to the vulnerability of models to the false positive labels and the latter may arouse error accumulation problem. To remedy these two drawbacks, this paper proposes a novel approach termed "Network Cooperation with Progressive Disambiguation" (NCPD) for PLL. Specifically, we devise a progressive disambiguation strategy of which the disambiguation operations are performed on simple instances firstly and then gradually on more complicated ones. Therefore, the negative impacts brought by the false positive labels of complicated instances can be effectively mitigated as the disambiguation ability of the model has been strengthened via learning from the simple instances. Moreover, by employing artificial neural networks as the backbone, we utilize a network cooperation mechanism which trains two networks collaboratively by letting them interact with each other. As two networks have different disambiguation ability, such interaction is beneficial for both networks to reduce their respective disambiguation errors, and thus is much better than the existing algorithms with single-trend training process. Extensive experimental results on various benchmark and practical datasets demonstrate the superiority of our NCPD to other state-of-the-art PLL methods.
['Chen gong', 'Jian Yang', 'Jiehui Deng', 'Yao Yao']
2020-02-22
null
null
null
null
['partial-label-learning']
['methodology']
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[9.459600448608398, 3.9557602405548096]
086576ba-0a3f-46f0-9ff2-15c7907a4b42
valerian-invariant-feature-learning-for-imu
2303.06048
null
https://arxiv.org/abs/2303.06048v1
https://arxiv.org/pdf/2303.06048v1.pdf
VALERIAN: Invariant Feature Learning for IMU Sensor-based Human Activity Recognition in the Wild
Deep neural network models for IMU sensor-based human activity recognition (HAR) that are trained from controlled, well-curated datasets suffer from poor generalizability in practical deployments. However, data collected from naturalistic settings often contains significant label noise. In this work, we examine two in-the-wild HAR datasets and DivideMix, a state-of-the-art learning with noise labels (LNL) method to understand the extent and impacts of noisy labels in training data. Our empirical analysis reveals that the substantial domain gaps among diverse subjects cause LNL methods to violate a key underlying assumption, namely, neural networks tend to fit simpler (and thus clean) data in early training epochs. Motivated by the insights, we design VALERIAN, an invariant feature learning method for in-the-wild wearable sensor-based HAR. By training a multi-task model with separate task-specific layers for each subject, VALERIAN allows noisy labels to be dealt with individually while benefiting from shared feature representation across subjects. We evaluated VALERIAN on four datasets, two collected in a controlled environment and two in the wild.
['Rong Zheng', 'Boyu Wang', 'Yujiao Hao']
2023-03-03
null
null
null
null
['human-activity-recognition', 'human-activity-recognition']
['computer-vision', 'time-series']
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[7.758265018463135, 0.9508281350135803]
99e414be-1be7-463d-82c7-4e2d91e9cbb0
neural-network-fast-classifies-biological
2012.10331
null
https://arxiv.org/abs/2012.10331v1
https://arxiv.org/pdf/2012.10331v1.pdf
Neural network fast-classifies biological images using features selected after their random-forests-importance to power smart microscopy
Artificial intelligence is nowadays used for cell detection and classification in optical microscopy, during post-acquisition analysis. The microscopes are now fully automated and next expected to be smart, to make acquisition decisions based on the images. It calls for analysing them on the fly. Biology further imposes training on a reduced dataset due to cost and time to prepare the samples and have the datasets annotated by experts. We propose here a real-time image processing, compliant with these specifications by balancing accurate detection and execution performance. We characterised the images using a generic, high-dimensional feature extractor. We then classified the images using machine learning for the sake of understanding the contribution of each feature in decision and execution time. We found that the non-linear-classifier random forests outperformed Fisher's linear discriminant. More importantly, the most discriminant and time-consuming features could be excluded without any significant loss in accuracy, offering a substantial gain in execution time. It suggests a feature-group redundancy likely related to the biology of the observed cells. We offer a method to select fast and discriminant features. In our assay, a 79.6 $\pm$ 2.4 % accurate classification of a cell took 68.7 $\pm$ 3.5 ms (mean $\pm$ SD, 5-fold cross-validation nested in 10 bootstrap repeats), corresponding to 14 cells per second, dispatched into 8 phases of the cell cycle using 12 feature-groups and operating a consumer market ARM-based embedded system. Interestingly, a simple neural network offered similar performances paving the way to faster training and classification, using parallel execution on a general-purpose graphic processing unit. Finally, this strategy is also usable for deep neural networks paving the way to optimising these algorithms for smart microscopy.
['Jacques Pécréaux', 'Marc Tramier', 'Otmane Bouchareb', 'Baptiste Giroux', 'Jérémy Pont', 'Thomas Walter', 'Youssef El Habouz', 'Florian Sizaire', 'Maël Balluet']
2020-12-18
null
null
null
null
['cell-detection']
['computer-vision']
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[14.710262298583984, -3.09609055519104]
ba5b7d9b-d720-497a-b881-9dc02c09eb70
quantum-tomography-benchmarking
2012.15656
null
https://arxiv.org/abs/2012.15656v2
https://arxiv.org/pdf/2012.15656v2.pdf
Quantum tomography benchmarking
Recent advances in quantum computers and simulators are steadily leading us towards full-scale quantum computing devices. Due to the fact that debugging is necessary to create any computing device, quantum tomography (QT) is a critical milestone on this path. In practice, the choice between different QT methods faces the lack of comparison methodology. Modern research provides a wide range of QT methods, which differ in their application areas, as well as experimental and computational complexity. Testing such methods is also being made under different conditions, and various efficiency measures are being applied. Moreover, many methods have complex programming implementations; thus, comparison becomes extremely difficult. In this study, we have developed a general methodology for comparing quantum state tomography methods. The methodology is based on an estimate of the resources needed to achieve the required accuracy. We have developed a software library (in MATLAB and Python) that makes it easy to analyze any QT method implementation through a series of numerical experiments. The conditions for such a simulation are set by the number of tests corresponding to real physical experiments. As a validation of the proposed methodology and software, we analyzed and compared a set of QT methods. The analysis revealed some method-specific features and provided estimates of the relative efficiency of the methods.
['Yu. I. Bogdanov', 'A. Yu. Chernyavskiy', 'B. I. Bantysh']
2020-12-31
null
null
null
null
['quantum-state-tomography']
['medical']
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[5.583437919616699, 4.958820343017578]
950d50ba-c489-4ef2-a341-2b1eed737479
discrepancy-optimal-meta-learning-for-domain
null
null
https://openreview.net/forum?id=eJyt4hJzOLk
https://openreview.net/pdf?id=eJyt4hJzOLk
Discrepancy-Optimal Meta-Learning for Domain Generalization
This work attempts to tackle the problem of domain generalization (DG) via learning to reduce domain shift with an episodic training procedure. In particular, we measure the domain shift with $\mathcal{Y}$-discrepancy and learn to optimize $\mathcal{Y}$-discrepancy between the unseen target domain and source domains only using source-domain samples. Theoretically, we give a PAC-style generalization bound for discrepancy-optimal meta-learning and further make comparisons with other DG bounds including ERM and domain-invariant learning. The theoretical analyses show that there is a tradeoff between classification performance and computational complexity for discrepancy-optimal meta-learning. The theoretical results also shed light on a bilevel optimization algorithm for DG. Empirically, we evaluate the algorithm with DomainBed and achieves state-of-the-art results on two DG benchmarks.
['Chen Jia']
2021-09-29
null
null
null
null
['style-generalization']
['computer-vision']
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[10.393521308898926, 3.014510154724121]
26d5ec09-0810-4626-8ff7-e8ed9ad17bdb
continuous-cost-aggregation-for-dual-pixel
2306.07921
null
https://arxiv.org/abs/2306.07921v1
https://arxiv.org/pdf/2306.07921v1.pdf
Continuous Cost Aggregation for Dual-Pixel Disparity Extraction
Recent works have shown that depth information can be obtained from Dual-Pixel (DP) sensors. A DP arrangement provides two views in a single shot, thus resembling a stereo image pair with a tiny baseline. However, the different point spread function (PSF) per view, as well as the small disparity range, makes the use of typical stereo matching algorithms problematic. To address the above shortcomings, we propose a Continuous Cost Aggregation (CCA) scheme within a semi-global matching framework that is able to provide accurate continuous disparities from DP images. The proposed algorithm fits parabolas to matching costs and aggregates parabola coefficients along image paths. The aggregation step is performed subject to a quadratic constraint that not only enforces the disparity smoothness but also maintains the quadratic form of the total costs. This gives rise to an inherently efficient disparity propagation scheme with a pixel-wise minimization in closed-form. Furthermore, the continuous form allows for a robust multi-scale aggregation that better compensates for the varying PSF. Experiments on DP data from both DSLR and phone cameras show that the proposed scheme attains state-of-the-art performance in DP disparity estimation.
['Georgios Evangelidis', 'Sagi Katz', 'Sagi Monin']
2023-06-13
null
null
null
null
['disparity-estimation', 'stereo-matching-1']
['computer-vision', 'computer-vision']
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[9.206759452819824, -2.507826089859009]
62d75100-d30a-4b57-92cf-c6e6db0e820e
ireen-iterative-reverse-engineering-of-black
2006.10720
null
https://arxiv.org/abs/2006.10720v2
https://arxiv.org/pdf/2006.10720v2.pdf
IReEn: Reverse-Engineering of Black-Box Functions via Iterative Neural Program Synthesis
In this work, we investigate the problem of revealing the functionality of a black-box agent. Notably, we are interested in the interpretable and formal description of the behavior of such an agent. Ideally, this description would take the form of a program written in a high-level language. This task is also known as reverse engineering and plays a pivotal role in software engineering, computer security, but also most recently in interpretability. In contrast to prior work, we do not rely on privileged information on the black box, but rather investigate the problem under a weaker assumption of having only access to inputs and outputs of the program. We approach this problem by iteratively refining a candidate set using a generative neural program synthesis approach until we arrive at a functionally equivalent program. We assess the performance of our approach on the Karel dataset. Our results show that the proposed approach outperforms the state-of-the-art on this challenge by finding an approximately functional equivalent program in 78% of cases -- even exceeding prior work that had privileged information on the black-box.
['Mateusz Malinowski', 'Mario Fritz', 'Hossein Hajipour']
2020-06-18
null
https://openreview.net/forum?id=HyLGEHFzqzM
https://openreview.net/pdf?id=HyLGEHFzqzM
neurips-workshop-cap-2020-12
['computer-security']
['miscellaneous']
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[8.22209358215332, 7.345916271209717]
ed942d58-4399-45ed-8ad8-57351b247952
bridging-natural-language-processing-and
2304.09616
null
https://arxiv.org/abs/2304.09616v2
https://arxiv.org/pdf/2304.09616v2.pdf
Bridging Natural Language Processing and Psycholinguistics: computationally grounded semantic similarity datasets for Basque and Spanish
We present a computationally-grounded word similarity dataset based on two well-known Natural Language Processing resources; text corpora and knowledge bases. This dataset aims to fulfil a gap in psycholinguistic research by providing a variety of quantifications of semantic similarity in an extensive set of noun pairs controlled by variables that play a significant role in lexical processing. The dataset creation has consisted in three steps, 1) computing four key psycholinguistic features for each noun; concreteness, frequency, semantic and phonological neighbourhood density; 2) pairing nouns across these four variables; 3) for each noun pair, assigning three types of word similarity measurements, computed out of text, Wordnet and hybrid embeddings. The present dataset includes noun pairs' information in Basque and European Spanish, but further work intends to extend it to more languages.
['I. San Martin', 'M. Arantzeta', 'J. Goikoetxea']
2023-04-19
null
null
null
null
['word-similarity', 'semantic-textual-similarity', 'semantic-similarity']
['natural-language-processing', 'natural-language-processing', 'natural-language-processing']
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[10.445927619934082, 9.061966896057129]
936b2441-bf1e-402c-b73f-b11a145cef5b
progen2-exploring-the-boundaries-of-protein
2206.13517
null
https://arxiv.org/abs/2206.13517v1
https://arxiv.org/pdf/2206.13517v1.pdf
ProGen2: Exploring the Boundaries of Protein Language Models
Attention-based models trained on protein sequences have demonstrated incredible success at classification and generation tasks relevant for artificial intelligence-driven protein design. However, we lack a sufficient understanding of how very large-scale models and data play a role in effective protein model development. We introduce a suite of protein language models, named ProGen2, that are scaled up to 6.4B parameters and trained on different sequence datasets drawn from over a billion proteins from genomic, metagenomic, and immune repertoire databases. ProGen2 models show state-of-the-art performance in capturing the distribution of observed evolutionary sequences, generating novel viable sequences, and predicting protein fitness without additional finetuning. As large model sizes and raw numbers of protein sequences continue to become more widely accessible, our results suggest that a growing emphasis needs to be placed on the data distribution provided to a protein sequence model. We release the ProGen2 models and code at https://github.com/salesforce/progen.
['Ali Madani', 'Nikhil Naik', 'Eli N. Weinstein', 'Jeffrey Ruffolo', 'Erik Nijkamp']
2022-06-27
null
null
null
null
['protein-design']
['medical']
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[4.684179782867432, 5.609221458435059]
2b16cab3-2bdf-4835-8d18-1b158b0d9f01
quantization-of-generative-adversarial
2108.13996
null
https://arxiv.org/abs/2108.13996v1
https://arxiv.org/pdf/2108.13996v1.pdf
Quantization of Generative Adversarial Networks for Efficient Inference: a Methodological Study
Generative adversarial networks (GANs) have an enormous potential impact on digital content creation, e.g., photo-realistic digital avatars, semantic content editing, and quality enhancement of speech and images. However, the performance of modern GANs comes together with massive amounts of computations performed during the inference and high energy consumption. That complicates, or even makes impossible, their deployment on edge devices. The problem can be reduced with quantization -- a neural network compression technique that facilitates hardware-friendly inference by replacing floating-point computations with low-bit integer ones. While quantization is well established for discriminative models, the performance of modern quantization techniques in application to GANs remains unclear. GANs generate content of a more complex structure than discriminative models, and thus quantization of GANs is significantly more challenging. To tackle this problem, we perform an extensive experimental study of state-of-art quantization techniques on three diverse GAN architectures, namely StyleGAN, Self-Attention GAN, and CycleGAN. As a result, we discovered practical recipes that allowed us to successfully quantize these models for inference with 4/8-bit weights and 8-bit activations while preserving the quality of the original full-precision models.
['Dmitry Vetrov', 'Alexander Fritzler', 'Pavel Andreev']
2021-08-31
null
null
null
null
['neural-network-compression', 'neural-network-compression']
['methodology', 'miscellaneous']
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[11.58951473236084, -0.48503121733665466]
45293def-e5fc-459f-aa36-a904e211f43c
context-aware-embeddings-for-automatic-art
1904.04985
null
http://arxiv.org/abs/1904.04985v1
http://arxiv.org/pdf/1904.04985v1.pdf
Context-Aware Embeddings for Automatic Art Analysis
Automatic art analysis aims to classify and retrieve artistic representations from a collection of images by using computer vision and machine learning techniques. In this work, we propose to enhance visual representations from neural networks with contextual artistic information. Whereas visual representations are able to capture information about the content and the style of an artwork, our proposed context-aware embeddings additionally encode relationships between different artistic attributes, such as author, school, or historical period. We design two different approaches for using context in automatic art analysis. In the first one, contextual data is obtained through a multi-task learning model, in which several attributes are trained together to find visual relationships between elements. In the second approach, context is obtained through an art-specific knowledge graph, which encodes relationships between artistic attributes. An exhaustive evaluation of both of our models in several art analysis problems, such as author identification, type classification, or cross-modal retrieval, show that performance is improved by up to 7.3% in art classification and 37.24% in retrieval when context-aware embeddings are used.
['Yuta Nakashima', 'Noa Garcia', 'Benjamin Renoust']
2019-04-10
null
null
null
null
['art-analysis']
['computer-vision']
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[11.227643013000488, 0.4652967154979706]
6c6e4a81-0c70-468a-a3e2-886c332ad99f
towards-crafting-text-adversarial-samples
1707.02812
null
http://arxiv.org/abs/1707.02812v1
http://arxiv.org/pdf/1707.02812v1.pdf
Towards Crafting Text Adversarial Samples
Adversarial samples are strategically modified samples, which are crafted with the purpose of fooling a classifier at hand. An attacker introduces specially crafted adversarial samples to a deployed classifier, which are being mis-classified by the classifier. However, the samples are perceived to be drawn from entirely different classes and thus it becomes hard to detect the adversarial samples. Most of the prior works have been focused on synthesizing adversarial samples in the image domain. In this paper, we propose a new method of crafting adversarial text samples by modification of the original samples. Modifications of the original text samples are done by deleting or replacing the important or salient words in the text or by introducing new words in the text sample. Our algorithm works best for the datasets which have sub-categories within each of the classes of examples. While crafting adversarial samples, one of the key constraint is to generate meaningful sentences which can at pass off as legitimate from language (English) viewpoint. Experimental results on IMDB movie review dataset for sentiment analysis and Twitter dataset for gender detection show the efficiency of our proposed method.
['Suranjana Samanta', 'Sameep Mehta']
2017-07-10
null
null
null
null
['adversarial-text']
['adversarial']
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[5.911858558654785, 8.017765045166016]
cfb7ca54-a086-4f88-b73a-8779eae2ebfc
multi-view-learning-for-web-spam-detection
1305.3814
null
http://arxiv.org/abs/1305.3814v2
http://arxiv.org/pdf/1305.3814v2.pdf
Multi-View Learning for Web Spam Detection
Spam pages are designed to maliciously appear among the top search results by excessive usage of popular terms. Therefore, spam pages should be removed using an effective and efficient spam detection system. Previous methods for web spam classification used several features from various information sources (page contents, web graph, access logs, etc.) to detect web spam. In this paper, we follow page-level classification approach to build fast and scalable spam filters. We show that each web page can be classified with satisfiable accuracy using only its own HTML content. In order to design a multi-view classification system, we used state-of-the-art spam classification methods with distinct feature sets (views) as the base classifiers. Then, a fusion model is learned to combine the output of the base classifiers and make final prediction. Results show that multi-view learning significantly improves the classification performance, namely AUC by 22%, while providing linear speedup for parallel execution.
['Behrouz Minaei-Bidgoli', 'Ali Hadian']
2013-05-16
null
null
null
null
['spam-detection']
['natural-language-processing']
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[7.839234352111816, 10.023884773254395]
29436169-b874-4573-a735-a9a021f73556
a-feedback-neural-network-for-small-target
1805.00342
null
http://arxiv.org/abs/1805.00342v2
http://arxiv.org/pdf/1805.00342v2.pdf
A Feedback Neural Network for Small Target Motion Detection in Cluttered Backgrounds
Small target motion detection is critical for insects to search for and track mates or prey which always appear as small dim speckles in the visual field. A class of specific neurons, called small target motion detectors (STMDs), has been characterized by exquisite sensitivity for small target motion. Understanding and analyzing visual pathway of STMD neurons are beneficial to design artificial visual systems for small target motion detection. Feedback loops have been widely identified in visual neural circuits and play an important role in target detection. However, if there exists a feedback loop in the STMD visual pathway or if a feedback loop could significantly improve the detection performance of STMD neurons, is unclear. In this paper, we propose a feedback neural network for small target motion detection against naturally cluttered backgrounds. In order to form a feedback loop, model output is temporally delayed and relayed to previous neural layer as feedback signal. Extensive experiments showed that the significant improvement of the proposed feedback neural network over the existing STMD-based models for small target motion detection.
['Shigang Yue', 'Hongxin Wang', 'Jigen Peng']
2018-05-01
null
null
null
null
['motion-detection']
['computer-vision']
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[8.405130386352539, -0.8393992781639099]
8ec32017-46f8-4f39-9f15-8ec4d1d20bd0
end-to-end-table-question-answering-via
2203.16714
null
https://arxiv.org/abs/2203.16714v1
https://arxiv.org/pdf/2203.16714v1.pdf
End-to-End Table Question Answering via Retrieval-Augmented Generation
Most existing end-to-end Table Question Answering (Table QA) models consist of a two-stage framework with a retriever to select relevant table candidates from a corpus and a reader to locate the correct answers from table candidates. Even though the accuracy of the reader models is significantly improved with the recent transformer-based approaches, the overall performance of such frameworks still suffers from the poor accuracy of using traditional information retrieval techniques as retrievers. To alleviate this problem, we introduce T-RAG, an end-to-end Table QA model, where a non-parametric dense vector index is fine-tuned jointly with BART, a parametric sequence-to-sequence model to generate answer tokens. Given any natural language question, T-RAG utilizes a unified pipeline to automatically search through a table corpus to directly locate the correct answer from the table cells. We apply T-RAG to recent open-domain Table QA benchmarks and demonstrate that the fine-tuned T-RAG model is able to achieve state-of-the-art performance in both the end-to-end Table QA and the table retrieval tasks.
['James Hendler', 'Alfio Gliozzo', 'Michael Glass', 'Mustafa Canim', 'Feifei Pan']
2022-03-30
null
null
null
null
['table-retrieval']
['natural-language-processing']
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[10.495390892028809, 7.879754543304443]
8b3155d0-f312-4808-80bc-a71c411841b9
unsupervised-speech-segmentation-and-variable
2110.02345
null
https://arxiv.org/abs/2110.02345v2
https://arxiv.org/pdf/2110.02345v2.pdf
Unsupervised Speech Segmentation and Variable Rate Representation Learning using Segmental Contrastive Predictive Coding
Typically, unsupervised segmentation of speech into the phone and word-like units are treated as separate tasks and are often done via different methods which do not fully leverage the inter-dependence of the two tasks. Here, we unify them and propose a technique that can jointly perform both, showing that these two tasks indeed benefit from each other. Recent attempts employ self-supervised learning, such as contrastive predictive coding (CPC), where the next frame is predicted given past context. However, CPC only looks at the audio signal's frame-level structure. We overcome this limitation with a segmental contrastive predictive coding (SCPC) framework to model the signal structure at a higher level, e.g., phone level. A convolutional neural network learns frame-level representation from the raw waveform via noise-contrastive estimation (NCE). A differentiable boundary detector finds variable-length segments, which are then used to optimize a segment encoder via NCE to learn segment representations. The differentiable boundary detector allows us to train frame-level and segment-level encoders jointly. Experiments show that our single model outperforms existing phone and word segmentation methods on TIMIT and Buckeye datasets. We discover that phone class impacts the boundary detection performance, and the boundaries between successive vowels or semivowels are the most difficult to identify. Finally, we use SCPC to extract speech features at the segment level rather than at uniformly spaced frame level (e.g., 10 ms) and produce variable rate representations that change according to the contents of the utterance. We can lower the feature extraction rate from the typical 100 Hz to as low as 14.5 Hz on average while still outperforming the MFCC features on the linear phone classification task.
['Najim Dehak', 'Laureano Moro-Velazquez', 'Piotr Żelasko', 'Jesús Villalba', 'Saurabhchand Bhati']
2021-10-05
null
null
null
null
['boundary-detection']
['computer-vision']
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[14.5855712890625, 6.6071624755859375]
d2b09dfb-f78a-487c-8761-a86a788de4d5
componerf-text-guided-multi-object
2303.13843
null
https://arxiv.org/abs/2303.13843v1
https://arxiv.org/pdf/2303.13843v1.pdf
CompoNeRF: Text-guided Multi-object Compositional NeRF with Editable 3D Scene Layout
Recent research endeavors have shown that combining neural radiance fields (NeRFs) with pre-trained diffusion models holds great potential for text-to-3D generation.However, a hurdle is that they often encounter guidance collapse when rendering complex scenes from multi-object texts. Because the text-to-image diffusion models are inherently unconstrained, making them less competent to accurately associate object semantics with specific 3D structures. To address this issue, we propose a novel framework, dubbed CompoNeRF, that explicitly incorporates an editable 3D scene layout to provide effective guidance at the single object (i.e., local) and whole scene (i.e., global) levels. Firstly, we interpret the multi-object text as an editable 3D scene layout containing multiple local NeRFs associated with the object-specific 3D box coordinates and text prompt, which can be easily collected from users. Then, we introduce a global MLP to calibrate the compositional latent features from local NeRFs, which surprisingly improves the view consistency across different local NeRFs. Lastly, we apply the text guidance on global and local levels through their corresponding views to avoid guidance ambiguity. This way, our CompoNeRF allows for flexible scene editing and re-composition of trained local NeRFs into a new scene by manipulating the 3D layout or text prompt. Leveraging the open-source Stable Diffusion model, our CompoNeRF can generate faithful and editable text-to-3D results while opening a potential direction for text-guided multi-object composition via the editable 3D scene layout.
['Lin Wang', 'Hui Xiong', 'Xiaodong Lin', 'Haonan Lu', 'Sijia Li', 'Haotian Bai', 'Yiqi Lin']
2023-03-24
null
null
null
null
['text-to-3d']
['computer-vision']
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[9.331156730651855, -3.1705856323242188]
21a95ee8-aabc-439f-a183-5644b1dcf6cf
on-the-benefits-of-self-taught-learning-for
2209.10099
null
https://arxiv.org/abs/2209.10099v4
https://arxiv.org/pdf/2209.10099v4.pdf
On the benefits of self-taught learning for brain decoding
Context. We study the benefits of using a large public neuroimaging database composed of fMRI statistic maps, in a self-taught learning framework, for improving brain decoding on new tasks. First, we leverage the NeuroVault database to train, on a selection of relevant statistic maps, a convolutional autoencoder to reconstruct these maps. Then, we use this trained encoder to initialize a supervised convolutional neural network to classify tasks or cognitive processes of unseen statistic maps from large collections of the NeuroVault database. Results. We show that such a self-taught learning process always improves the performance of the classifiers but the magnitude of the benefits strongly depends on the number of samples available both for pre-training and finetuning the models and on the complexity of the targeted downstream task. Conclusion. The pre-trained model improves the classification performance and displays more generalizable features, less sensitive to individual differences.
['Camille Maumet', 'Elisa Fromont', 'Elodie Germani']
2022-09-19
null
null
null
null
['brain-decoding', 'brain-decoding']
['medical', 'miscellaneous']
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[12.64585018157959, 3.2165427207946777]
320d9f6d-06b0-4132-9703-0393c1afc99a
total-energy-shaping-control-for-mechanical
2301.03746
null
https://arxiv.org/abs/2301.03746v2
https://arxiv.org/pdf/2301.03746v2.pdf
Total energy-shaping control for mechanical systems via Control-by-Interconnection
Application of IDA-PBC to mechanical systems has received much attention in recent decades, but its application is still limited by the solvability of the so-called matching conditions. In this work, it is shown that total energy-shaping control of under-actuated mechanical systems has a control-by-interconnection interpretation. Using this interpretation, alternate matching conditions are formulated that defines constraints on the added energy, rather then the total closed-loop energy. It is additionally shown that, for systems that are under-actuated degree one with the mass matrix depending on a single coordinate, the kinetic energy matching conditions resolve to ODEs which can be evaluated numerically. Using this approach controllers are proposed for the benchmark cart-pole and acrobot systems.
['Joel Ferguson']
2023-01-10
null
null
null
null
['total-energy', 'acrobot']
['miscellaneous', 'playing-games']
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[5.427215099334717, 2.5769765377044678]
34ec2bbc-b618-4c34-8958-e925b57b6668
care-open-knowledge-graph-embeddings
null
null
https://aclanthology.org/D19-1036
https://aclanthology.org/D19-1036.pdf
CaRe: Open Knowledge Graph Embeddings
Open Information Extraction (OpenIE) methods are effective at extracting (noun phrase, relation phrase, noun phrase) triples from text, e.g., (Barack Obama, took birth in, Honolulu). Organization of such triples in the form of a graph with noun phrases (NPs) as nodes and relation phrases (RPs) as edges results in the construction of Open Knowledge Graphs (OpenKGs). In order to use such OpenKGs in downstream tasks, it is often desirable to learn embeddings of the NPs and RPs present in the graph. Even though several Knowledge Graph (KG) embedding methods have been recently proposed, all of those methods have targeted Ontological KGs, as opposed to OpenKGs. Straightforward application of existing Ontological KG embedding methods to OpenKGs is challenging, as unlike Ontological KGs, OpenKGs are not canonicalized, i.e., a real-world entity may be represented using multiple nodes in the OpenKG, with each node corresponding to a different NP referring to the entity. For example, nodes with labels Barack Obama, Obama, and President Obama may refer to the same real-world entity Barack Obama. Even though canonicalization of OpenKGs has received some attention lately, output of such methods has not been used to improve OpenKG embed- dings. We fill this gap in the paper and propose Canonicalization-infused Representations (CaRe) for OpenKGs. Through extensive experiments, we observe that CaRe enables existing models to adapt to the challenges in OpenKGs and achieve substantial improvements for the link prediction task.
['Swapnil Gupta', 'Sreyash Kenkre', 'Partha Talukdar']
2019-11-01
null
null
null
ijcnlp-2019-11
['open-information-extraction']
['natural-language-processing']
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[9.037094116210938, 8.150567054748535]
be4b08c6-e7c7-4a7b-b1c7-fe8caad69c81
a-tool-for-extracting-conversational
null
null
https://aclanthology.org/L12-1039
https://aclanthology.org/L12-1039.pdf
A Tool for Extracting Conversational Implicatures
Explicitly conveyed knowledge represents only a portion of the information communicated by a text snippet. Automated mechanisms for deriving explicit information exist; however, the implicit assumptions and default inferences that capture our intuitions about a normal interpretation of a communication remain hidden for automated systems, despite the communication participants' ease of grasping the complete meaning of the communication. In this paper, we describe a reasoning framework for the automatic identification of conversational implicatures conveyed by real-world English and Arabic conversations carried via twitter.com. Our system transforms given utterances into deep semantic logical forms. It produces a variety of axioms that identify lexical connections between concepts, define rules of combining semantic relations, capture common-sense world knowledge, and encode Grice's Conversational Maxims. By exploiting this rich body of knowledge and reasoning within the context of the conversation, our system produces entailments and implicatures conveyed by analyzed utterances with an F-measure of 70.42{\%} for English conversations.
['Marta Tatu', 'Dan Moldovan']
2012-05-01
null
null
null
lrec-2012-5
['implicatures']
['natural-language-processing']
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[12.345514297485352, 8.011598587036133]
e87391de-f084-489d-8ba2-1b88a756d090
conformer-llms-convolution-augmented-large
2307.00461
null
https://arxiv.org/abs/2307.00461v1
https://arxiv.org/pdf/2307.00461v1.pdf
Conformer LLMs -- Convolution Augmented Large Language Models
This work builds together two popular blocks of neural architecture, namely convolutional layers and Transformers, for large language models (LLMs). Non-causal conformers are used ubiquitously in automatic speech recognition. This work aims to adapt these architectures in a causal setup for training LLMs. Transformers decoders effectively capture long-range dependencies over several modalities and form a core backbone of modern advancements in machine learning. Convolutional architectures have been popular in extracting features in domains such as raw 1-D signals, speech, and images, to name a few. In this paper, by combining local and global dependencies over latent representations using causal convolutional filters and Transformer, we achieve significant gains in performance. This work showcases a robust speech architecture that can be integrated and adapted in a causal setup beyond speech applications for large-scale language modeling.
['Prateek Verma']
2023-07-02
null
null
null
null
['speech-recognition']
['speech']
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[10.995808601379395, 6.609679222106934]
8728faeb-3e0f-417a-809e-2b6e24d3e58b
facial-surface-analysis-using-iso-geodesic
1608.08878
null
http://arxiv.org/abs/1608.08878v1
http://arxiv.org/pdf/1608.08878v1.pdf
Facial Surface Analysis using Iso-Geodesic Curves in Three Dimensional Face Recognition System
In this paper, we present an automatic 3D face recognition system. This system is based on the representation of human faces surfaces as collections of Iso-Geodesic Curves (IGC) using 3D Fast Marching algorithm. To compare two facial surfaces, we compute a geodesic distance between a pair of facial curves using a Riemannian geometry. In the classifying step, we use: Neural Networks (NN), K-Nearest Neighbor (KNN) and Support Vector Machines (SVM). To test this method and evaluate its performance, a simulation series of experiments were performed on 3D Shape REtrieval Contest 2008 database (SHREC2008).
['Bouzid Manaut', 'El Mahdi Barrah', 'Said Safi', 'Rachid Ahdid']
2016-08-31
null
null
null
null
['3d-shape-retrieval']
['computer-vision']
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[13.257428169250488, 0.6770864129066467]
96fb2e67-16be-4809-8163-1068ab462b59
optimization-based-deep-learning-methods-for
2303.01515
null
https://arxiv.org/abs/2303.01515v1
https://arxiv.org/pdf/2303.01515v1.pdf
Optimization-Based Deep learning methods for Magnetic Resonance Imaging Reconstruction and Synthesis
This dissertation is devoted to provide advanced nonconvex nonsmooth variational models of (Magnetic Resonance Image) MRI reconstruction, efficient learnable image reconstruction algorithms and parameter training algorithms that improve the accuracy and robustness of the optimization-based deep learning methods for compressed sensing MRI reconstruction and synthesis. The first part introduces a novel optimization based deep neural network whose architecture is inspired by proximal gradient descent for solving a variational model. The second part is a substantial extension of the preliminary work in the first part by solving the calibration-free fast pMRI reconstruction problem in a discrete-time optimal control framework. The third part aims at developing a generalizable Magnetic Resonance Imaging (MRI) reconstruction method in the meta-learning framework. The last part aims to synthesize target modality of MRI by using partially scanned k-space data from source modalities instead of fully scanned data that is used in the state-of-the-art multimodal synthesis.
['Wanyu Bian']
2023-03-02
null
null
null
null
['mri-reconstruction']
['computer-vision']
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[13.489744186401367, -2.4159626960754395]
01efa5b9-f9f7-464c-ada2-848a386833f2
triple-stream-deep-metric-learning-of-great
2301.02642
null
https://arxiv.org/abs/2301.02642v1
https://arxiv.org/pdf/2301.02642v1.pdf
Triple-stream Deep Metric Learning of Great Ape Behavioural Actions
We propose the first metric learning system for the recognition of great ape behavioural actions. Our proposed triple stream embedding architecture works on camera trap videos taken directly in the wild and demonstrates that the utilisation of an explicit DensePose-C chimpanzee body part segmentation stream effectively complements traditional RGB appearance and optical flow streams. We evaluate system variants with different feature fusion techniques and long-tail recognition approaches. Results and ablations show performance improvements of ~12% in top-1 accuracy over previous results achieved on the PanAf-500 dataset containing 180,000 manually annotated frames across nine behavioural actions. Furthermore, we provide a qualitative analysis of our findings and augment the metric learning system with long-tail recognition techniques showing that average per class accuracy -- critical in the domain -- can be improved by ~23% compared to the literature on that dataset. Finally, since our embedding spaces are constructed as metric, we provide first data-driven visualisations of the great ape behavioural action spaces revealing emerging geometry and topology. We hope that the work sparks further interest in this vital application area of computer vision for the benefit of endangered great apes.
['Tilo Burghardt', 'Hjalmar Kühl', 'Majid Mirmehdi', 'Otto Brookes']
2023-01-06
null
null
null
null
['metric-learning', 'metric-learning']
['computer-vision', 'methodology']
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[7.642454624176025, -0.5209493637084961]
69e040ce-b520-4a28-89f2-05f0d45754d3
mobileinst-video-instance-segmentation-on-the
2303.17594
null
https://arxiv.org/abs/2303.17594v1
https://arxiv.org/pdf/2303.17594v1.pdf
MobileInst: Video Instance Segmentation on the Mobile
Although recent approaches aiming for video instance segmentation have achieved promising results, it is still difficult to employ those approaches for real-world applications on mobile devices, which mainly suffer from (1) heavy computation and memory cost and (2) complicated heuristics for tracking objects. To address those issues, we present MobileInst, a lightweight and mobile-friendly framework for video instance segmentation on mobile devices. Firstly, MobileInst adopts a mobile vision transformer to extract multi-level semantic features and presents an efficient query-based dual-transformer instance decoder for mask kernels and a semantic-enhanced mask decoder to generate instance segmentation per frame. Secondly, MobileInst exploits simple yet effective kernel reuse and kernel association to track objects for video instance segmentation. Further, we propose temporal query passing to enhance the tracking ability for kernels. We conduct experiments on COCO and YouTube-VIS datasets to demonstrate the superiority of MobileInst and evaluate the inference latency on a mobile CPU core of Qualcomm Snapdragon-778G, without other methods of acceleration. On the COCO dataset, MobileInst achieves 30.5 mask AP and 176 ms on the mobile CPU, which reduces the latency by 50% compared to the previous SOTA. For video instance segmentation, MobileInst achieves 35.0 AP on YouTube-VIS 2019 and 30.1 AP on YouTube-VIS 2021. Code will be available to facilitate real-world applications and future research.
['Xinggang Wang', 'Wenyu Liu', 'Dashan Gao', 'Xiaowen Ying', 'Xin Li', 'Jiancheng Lyu', 'Shuai Zhang', 'Haoyi Jiang', 'Shusheng Yang', 'Tianheng Cheng', 'Renhong Zhang']
2023-03-30
null
null
null
null
['video-instance-segmentation']
['computer-vision']
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[9.068193435668945, -0.12996792793273926]
7698d7aa-043c-4194-9d20-f480b89f0f7a
style-transfer-based-image-synthesis-as-an
1905.10974
null
https://arxiv.org/abs/1905.10974v1
https://arxiv.org/pdf/1905.10974v1.pdf
Style transfer-based image synthesis as an efficient regularization technique in deep learning
These days deep learning is the fastest-growing area in the field of Machine Learning. Convolutional Neural Networks are currently the main tool used for image analysis and classification purposes. Although great achievements and perspectives, deep neural networks and accompanying learning algorithms have some relevant challenges to tackle. In this paper, we have focused on the most frequently mentioned problem in the field of machine learning, that is relatively poor generalization abilities. Partial remedies for this are regularization techniques e.g. dropout, batch normalization, weight decay, transfer learning, early stopping and data augmentation. In this paper, we have focused on data augmentation. We propose to use a method based on a neural style transfer, which allows generating new unlabeled images of a high perceptual quality that combine the content of a base image with the appearance of another one. In a proposed approach, the newly created images are described with pseudo-labels, and then used as a training dataset. Real, labeled images are divided into the validation and test set. We validated the proposed method on a challenging skin lesion classification case study. Four representative neural architectures are examined. Obtained results show the strong potential of the proposed approach.
['Michał Grochowski', 'Agnieszka Mikołajczyk']
2019-05-27
null
null
null
null
['skin-lesion-classification']
['medical']
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[14.99181842803955, -2.552314281463623]
236b6a09-27b8-439e-a001-10e289bb6acd
let-s-see-clearly-contaminant-artifact
2104.08852
null
https://arxiv.org/abs/2104.08852v1
https://arxiv.org/pdf/2104.08852v1.pdf
Let's See Clearly: Contaminant Artifact Removal for Moving Cameras
Contaminants such as dust, dirt and moisture adhering to the camera lens can greatly affect the quality and clarity of the resulting image or video. In this paper, we propose a video restoration method to automatically remove these contaminants and produce a clean video. Our approach first seeks to detect attention maps that indicate the regions that need to be restored. In order to leverage the corresponding clean pixels from adjacent frames, we propose a flow completion module to hallucinate the flow of the background scene to the attention regions degraded by the contaminants. Guided by the attention maps and completed flows, we propose a recurrent technique to restore the input frame by fetching clean pixels from adjacent frames. Finally, a multi-frame processing stage is used to further process the entire video sequence in order to enforce temporal consistency. The entire network is trained on a synthetic dataset that approximates the physical lighting properties of contaminant artifacts. This new dataset and our novel framework lead to our method that is able to address different contaminants and outperforms competitive restoration approaches both qualitatively and quantitatively.
['Pedro V. Sander', 'Jing Liao', 'Bo Zhang', 'Xiaoyu Li']
2021-04-18
null
http://openaccess.thecvf.com//content/ICCV2021/html/Li_Lets_See_Clearly_Contaminant_Artifact_Removal_for_Moving_Cameras_ICCV_2021_paper.html
http://openaccess.thecvf.com//content/ICCV2021/papers/Li_Lets_See_Clearly_Contaminant_Artifact_Removal_for_Moving_Cameras_ICCV_2021_paper.pdf
iccv-2021-1
['video-restoration']
['computer-vision']
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[11.238571166992188, -2.0509748458862305]
25efc804-73c6-4639-8573-3fbe504cc4fb
imsimcse-improving-contrastive-learning-for
2305.13192
null
https://arxiv.org/abs/2305.13192v1
https://arxiv.org/pdf/2305.13192v1.pdf
ImSimCSE: Improving Contrastive Learning for Sentence Embeddings from Two Perspectives
This paper aims to improve contrastive learning for sentence embeddings from two perspectives: handling dropout noise and addressing feature corruption. Specifically, for the first perspective, we identify that the dropout noise from negative pairs affects the model's performance. Therefore, we propose a simple yet effective method to deal with such type of noise. Secondly, we pinpoint the rank bottleneck of current solutions to feature corruption and propose a dimension-wise contrastive learning objective to address this issue. Both proposed methods are generic and can be applied to any contrastive learning based models for sentence embeddings. Experimental results on standard benchmarks demonstrate that combining both proposed methods leads to a gain of 1.8 points compared to the strong baseline SimCSE configured with BERT base. Furthermore, applying the proposed method to DiffCSE, another strong contrastive learning based baseline, results in a gain of 1.4 points.
['Lemao Liu', 'Lihui Chen', 'Wei Shao', 'Jiahao Xu']
2023-05-22
null
null
null
null
['sentence-embeddings', 'sentence-embeddings']
['methodology', 'natural-language-processing']
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[10.891511917114258, 8.5986328125]
5a3b1a3c-a069-46d1-a321-fbd8f985217e
ji-yu-bertde-duan-dao-duan-zhong-wen-pian
null
null
https://aclanthology.org/2020.ccl-1.36
https://aclanthology.org/2020.ccl-1.36.pdf
基于BERT的端到端中文篇章事件抽取(A BERT-based End-to-End Model for Chinese Document-level Event Extraction)
篇章级事件抽取研究从整篇文档中检测事件,识别出事件包含的元素并赋予每个元素特定的角色。本文针对限定领域的中文文档提出了基于BERT的端到端模型,在模型的元素和角色识别中依次引入前序层输出的事件类型以及实体嵌入表示,增强文本的事件、元素和角色关联表示,提高篇章中各事件所属元素的识别精度。在此基础上利用标题信息和事件五元组的嵌入式表示,实现主从事件的划分及元素融合。实验证明本文的方法与现有工作相比具有明显的提升。
['Bo Xu', 'Shuyi Wang', 'Hui Song', 'Hongkuan Zhang']
null
null
null
null
ccl-2020-10
['document-level-event-extraction']
['natural-language-processing']
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[-3.3161251544952393, 6.907712459564209]
fa51ad89-02bd-48e8-83b4-0af321e680e3
minimal-solvers-for-single-view-lens
2011.08988
null
https://arxiv.org/abs/2011.08988v1
https://arxiv.org/pdf/2011.08988v1.pdf
Minimal Solvers for Single-View Lens-Distorted Camera Auto-Calibration
This paper proposes minimal solvers that use combinations of imaged translational symmetries and parallel scene lines to jointly estimate lens undistortion with either affine rectification or focal length and absolute orientation. We use constraints provided by orthogonal scene planes to recover the focal length. We show that solvers using feature combinations can recover more accurate calibrations than solvers using only one feature type on scenes that have a balance of lines and texture. We also show that the proposed solvers are complementary and can be used together in a RANSAC-based estimator to improve auto-calibration accuracy. State-of-the-art performance is demonstrated on a standard dataset of lens-distorted urban images. The code is available at https://github.com/ylochman/single-view-autocalib.
['James Pritts', 'Rostyslav Hryniv', 'Oles Dobosevych', 'Yaroslava Lochman']
2020-11-17
null
null
null
null
['scene-parsing', 'scene-labeling', 'camera-auto-calibration']
['computer-vision', 'computer-vision', 'computer-vision']
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[8.389333724975586, -2.4731714725494385]
04ee89eb-ac27-44e2-860c-edcd8da24855
overview-of-the-wanlp-2022-shared-task-on
2211.10057
null
https://arxiv.org/abs/2211.10057v1
https://arxiv.org/pdf/2211.10057v1.pdf
Overview of the WANLP 2022 Shared Task on Propaganda Detection in Arabic
Propaganda is the expression of an opinion or an action by an individual or a group deliberately designed to influence the opinions or the actions of other individuals or groups with reference to predetermined ends, which is achieved by means of well-defined rhetorical and psychological devices. Propaganda techniques are commonly used in social media to manipulate or to mislead users. Thus, there has been a lot of recent research on automatic detection of propaganda techniques in text as well as in memes. However, so far the focus has been primarily on English. With the aim to bridge this language gap, we ran a shared task on detecting propaganda techniques in Arabic tweets as part of the WANLP 2022 workshop, which included two subtasks. Subtask~1 asks to identify the set of propaganda techniques used in a tweet, which is a multilabel classification problem, while Subtask~2 asks to detect the propaganda techniques used in a tweet together with the exact span(s) of text in which each propaganda technique appears. The task attracted 63 team registrations, and eventually 14 and 3 teams made submissions for subtask 1 and 2, respectively. Finally, 11 teams submitted system description papers.
['Preslav Nakov', 'Giovanni Da San Martino', 'Wajdi Zaghouani', 'Hamdy Mubarak', 'Firoj Alam']
2022-11-18
null
null
null
null
['propaganda-detection']
['natural-language-processing']
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[8.54932689666748, 10.493205070495605]
59199f7b-c658-43c7-af9f-5be5d18a7d4a
polar-relative-positional-encoding-for-video
null
null
https://www.ijcai.org/proceedings/2020/132
https://www.ijcai.org/proceedings/2020/0132.pdf
Polar Relative Positional Encoding for Video-Language Segmentation
In this paper, we tackle a challenging task named video-language segmentation. Given a video and a sentence in natural language, the goal is to segment the object or actor described by the sentence in video frames. To accurately denote a target object, the given sentence usually refers to multiple attributes, such as nearby objects with spatial relations, etc. In this paper, we propose a novel Polar Relative Positional Encoding (PRPE) mechanism that represents spatial relations in a ``linguistic'' way, i.e., in terms of direction and range. Sentence feature can interact with positional embeddings in a more direct way to extract the implied relative positional relations. We also propose parameterized functions for these positional embeddings to adapt real-value directions and ranges. With PRPE, we design a Polar Attention Module (PAM) as the basic module for vision-language fusion. Our method outperforms previous best method by a large margin of 11.4% absolute improvement in terms of mAP on the challenging A2D Sentences dataset. Our method also achieves competitive performances on the J-HMDB Sentences dataset.
['Qi Tian', 'Fei Wu', 'Lingxi Xie', 'Ke Ning']
2020-07-20
null
null
null
null
['referring-expression-segmentation']
['computer-vision']
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[9.788094520568848, 0.7649635076522827]
5f7f53a0-836b-46f2-81da-e8381e72fba6
potential-penetrative-pass-p3
2302.10760
null
https://arxiv.org/abs/2302.10760v1
https://arxiv.org/pdf/2302.10760v1.pdf
Potential Penetrative Pass (P3)
To score goals in football, a team needs to move forward on the pitch and there are various ways to do so. Depending on the game plan & philosophy; some teams prefer to play long balls from either wings or defense. Others, prefer to penetrate in depth with passes and outplay the opponent players. To objectively & in an automated way evaluate how teams play penetrative passes compared to the number of times they had the potential to do so, the "Potential Penetrative Pass (P3)" concept is presented here.
['Hadi Sotudeh']
2023-01-26
null
null
null
null
['philosophy']
['miscellaneous']
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[6.434110164642334, 0.41427457332611084]
c458a7fe-2367-4768-a6cb-4bfef5f41d9f
coordinated-multi-agent-exploration-using
null
null
https://openreview.net/forum?id=MPO4oML_JC
https://openreview.net/pdf?id=MPO4oML_JC
Coordinated Multi-Agent Exploration Using Shared Goals
Exploration is critical for good results of deep reinforcement learning algorithms and has drawn much attention. However, existing multi-agent deep reinforcement learning algorithms still use mostly noise-based techniques. It was recognized recently that noise-based exploration is suboptimal in multi-agent settings, and exploration methods that consider agents' cooperation have been developed. However, existing methods suffer from a common challenge: agents struggle to identify states that are worth exploring, and don't coordinate their exploration efforts toward those states. To address this shortcoming, in this paper, we proposed coordinated multi-agent exploration (CMAE): agents share a common goal while exploring. The goal is selected by a normalized entropy-based technique from multiple projected state spaces. Then, agents are trained to reach the goal in a coordinated manner. We demonstrated that our approach needs only $1\%-5\%$ of the environment steps to achieve similar or better returns than state-of-the-art baselines on various sparse-reward tasks, including a sparse-reward version of the Starcraft multi-agent challenge (SMAC).
['Alex Schwing', 'Unnat Jain', 'Iou-Jen Liu']
2021-01-01
null
null
null
null
['smac-1', 'smac']
['playing-games', 'playing-games']
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[3.8592233657836914, 1.8186182975769043]
6692e0d6-2dc5-42a2-82d9-7eb32c43e0d0
weakly-supervised-cell-tracking-via-backward
2007.15258
null
https://arxiv.org/abs/2007.15258v1
https://arxiv.org/pdf/2007.15258v1.pdf
Weakly-Supervised Cell Tracking via Backward-and-Forward Propagation
We propose a weakly-supervised cell tracking method that can train a convolutional neural network (CNN) by using only the annotation of "cell detection" (i.e., the coordinates of cell positions) without association information, in which cell positions can be easily obtained by nuclear staining. First, we train co-detection CNN that detects cells in successive frames by using weak-labels. Our key assumption is that co-detection CNN implicitly learns association in addition to detection. To obtain the association, we propose a backward-and-forward propagation method that analyzes the correspondence of cell positions in the outputs of co-detection CNN. Experiments demonstrated that the proposed method can associate cells by analyzing co-detection CNN. Even though the method uses only weak supervision, the performance of our method was almost the same as the state-of-the-art supervised method. Code is publicly available in https://github.com/naivete5656/WSCTBFP
['Chenyang Wang', 'Ryoma Bise', 'Junya Hayashida', 'Dai Fei Elmer Ker', 'Kazuya Nishimura']
2020-07-30
null
https://www.ecva.net/papers/eccv_2020/papers_ECCV/html/1489_ECCV_2020_paper.php
https://www.ecva.net/papers/eccv_2020/papers_ECCV/papers/123570103.pdf
eccv-2020-8
['cell-detection']
['computer-vision']
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[14.639287948608398, -3.1629228591918945]
93446343-532f-4d89-bc1d-bd7617c67388
edge-storage-management-recipe-with-zero-shot
2307.04298
null
https://arxiv.org/abs/2307.04298v1
https://arxiv.org/pdf/2307.04298v1.pdf
Edge Storage Management Recipe with Zero-Shot Data Compression for Road Anomaly Detection
Recent studies show edge computing-based road anomaly detection systems which may also conduct data collection simultaneously. However, the edge computers will have small data storage but we need to store the collected audio samples for a long time in order to update existing models or develop a novel method. Therefore, we should consider an approach for efficient storage management methods while preserving high-fidelity audio. A hardware-perspective approach, such as using a low-resolution microphone, is an intuitive way to reduce file size but is not recommended because it fundamentally cuts off high-frequency components. On the other hand, a computational file compression approach that encodes collected high-resolution audio into a compact code should be recommended because it also provides a corresponding decoding method. Motivated by this, we propose a way of simple yet effective pre-trained autoencoder-based data compression method. The pre-trained autoencoder is trained for the purpose of audio super-resolution so it can be utilized to encode or decode any arbitrary sampling rate. Moreover, it will reduce the communication cost for data transmission from the edge to the central server. Via the comparative experiments, we confirm that the zero-shot audio compression and decompression highly preserve anomaly detection performance while enhancing storage and transmission efficiency.
['Myung Jin Kim', 'UJu Gim', 'YeongHyeon Park']
2023-07-10
null
null
null
null
['audio-super-resolution', 'super-resolution', 'anomaly-detection', 'management', 'audio-super-resolution', 'edge-computing', 'data-compression']
['audio', 'computer-vision', 'methodology', 'miscellaneous', 'music', 'time-series', 'time-series']
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[7.885635852813721, 2.8368101119995117]
0dc31f64-0f70-4993-bdfe-40f177f6637f
real-time-streaming-video-denoising-with
2207.06937
null
https://arxiv.org/abs/2207.06937v1
https://arxiv.org/pdf/2207.06937v1.pdf
Real-time Streaming Video Denoising with Bidirectional Buffers
Video streams are delivered continuously to save the cost of storage and device memory. Real-time denoising algorithms are typically adopted on the user device to remove the noise involved during the shooting and transmission of video streams. However, sliding-window-based methods feed multiple input frames for a single output and lack computation efficiency. Recent multi-output inference works propagate the bidirectional temporal feature with a parallel or recurrent framework, which either suffers from performance drops on the temporal edges of clips or can not achieve online inference. In this paper, we propose a Bidirectional Streaming Video Denoising (BSVD) framework, to achieve high-fidelity real-time denoising for streaming videos with both past and future temporal receptive fields. The bidirectional temporal fusion for online inference is considered not applicable in the MoViNet. However, we introduce a novel Bidirectional Buffer Block as the core module of our BSVD, which makes it possible during our pipeline-style inference. In addition, our method is concise and flexible to be utilized in both non-blind and blind video denoising. We compare our model with various state-of-the-art video denoising models qualitatively and quantitatively on synthetic and real noise. Our method outperforms previous methods in terms of restoration fidelity and runtime. Our source code is publicly available at https://github.com/ChenyangQiQi/BSVD
['Qifeng Chen', 'Xin Yang', 'Junming Chen', 'Chenyang Qi']
2022-07-14
null
null
null
null
['video-denoising']
['computer-vision']
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[11.352167129516602, -2.104137420654297]
a8e1308f-f234-4a6e-9440-57ff5d772946
beyond-i-i-d-three-levels-of-generalization
2011.07743
null
https://arxiv.org/abs/2011.07743v6
https://arxiv.org/pdf/2011.07743v6.pdf
Beyond I.I.D.: Three Levels of Generalization for Question Answering on Knowledge Bases
Existing studies on question answering on knowledge bases (KBQA) mainly operate with the standard i.i.d assumption, i.e., training distribution over questions is the same as the test distribution. However, i.i.d may be neither reasonably achievable nor desirable on large-scale KBs because 1) true user distribution is hard to capture and 2) randomly sample training examples from the enormous space would be highly data-inefficient. Instead, we suggest that KBQA models should have three levels of built-in generalization: i.i.d, compositional, and zero-shot. To facilitate the development of KBQA models with stronger generalization, we construct and release a new large-scale, high-quality dataset with 64,331 questions, GrailQA, and provide evaluation settings for all three levels of generalization. In addition, we propose a novel BERT-based KBQA model. The combination of our dataset and model enables us to thoroughly examine and demonstrate, for the first time, the key role of pre-trained contextual embeddings like BERT in the generalization of KBQA.
['Yu Su', 'Xifeng Yan', 'Percy Liang', 'Brian Sadler', 'Michelle Vanni', 'Sue Kase', 'Yu Gu']
2020-11-16
null
null
null
null
['knowledge-base-question-answering']
['natural-language-processing']
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[11.03396224975586, 7.977259159088135]
4223ce02-66a8-4a5e-9fcd-00f1f37de439
efficient-skill-acquisition-for-complex
2303.03365
null
https://arxiv.org/abs/2303.03365v1
https://arxiv.org/pdf/2303.03365v1.pdf
Efficient Skill Acquisition for Complex Manipulation Tasks in Obstructed Environments
Data efficiency in robotic skill acquisition is crucial for operating robots in varied small-batch assembly settings. To operate in such environments, robots must have robust obstacle avoidance and versatile goal conditioning acquired from only a few simple demonstrations. Existing approaches, however, fall short of these requirements. Deep reinforcement learning (RL) enables a robot to learn complex manipulation tasks but is often limited to small task spaces in the real world due to sample inefficiency and safety concerns. Motion planning (MP) can generate collision-free paths in obstructed environments, but cannot solve complex manipulation tasks and requires goal states often specified by a user or object-specific pose estimator. In this work, we propose a system for efficient skill acquisition that leverages an object-centric generative model (OCGM) for versatile goal identification to specify a goal for MP combined with RL to solve complex manipulation tasks in obstructed environments. Specifically, OCGM enables one-shot target object identification and re-identification in new scenes, allowing MP to guide the robot to the target object while avoiding obstacles. This is combined with a skill transition network, which bridges the gap between terminal states of MP and feasible start states of a sample-efficient RL policy. The experiments demonstrate that our OCGM-based one-shot goal identification provides competitive accuracy to other baseline approaches and that our modular framework outperforms competitive baselines, including a state-of-the-art RL algorithm, by a significant margin for complex manipulation tasks in obstructed environments.
['Ingmar Posner', 'Jack Collins', 'Jun Yamada']
2023-03-06
null
null
null
null
['motion-planning']
['robots']
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[4.5919599533081055, 0.8206328749656677]
5cc086a8-9fb7-44cc-806a-e1a35077db86
explaincpe-a-free-text-explanation-benchmark
2305.12945
null
https://arxiv.org/abs/2305.12945v1
https://arxiv.org/pdf/2305.12945v1.pdf
ExplainCPE: A Free-text Explanation Benchmark of Chinese Pharmacist Examination
As ChatGPT and GPT-4 spearhead the development of Large Language Models (LLMs), more researchers are investigating their performance across various tasks. But more research needs to be done on the interpretability capabilities of LLMs, that is, the ability to generate reasons after an answer has been given. Existing explanation datasets are mostly English-language general knowledge questions, which leads to insufficient thematic and linguistic diversity. To address the language bias and lack of medical resources in generating rationales QA datasets, we present ExplainCPE (over 7k instances), a challenging medical benchmark in Simplified Chinese. We analyzed the errors of ChatGPT and GPT-4, pointing out the limitations of current LLMs in understanding text and computational reasoning. During the experiment, we also found that different LLMs have different preferences for in-context learning. ExplainCPE presents a significant challenge, but its potential for further investigation is promising, and it can be used to evaluate the ability of a model to generate explanations. AI safety and trustworthiness need more attention, and this work makes the first step to explore the medical interpretability of LLMs.The dataset is available at https://github.com/HITsz-TMG/ExplainCPE.
['Min Zhang', 'Zhenran Xu', 'Baotian Hu', 'Jindi Yu', 'Dongfang Li']
2023-05-22
null
null
null
null
['general-knowledge']
['miscellaneous']
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[9.539392471313477, 7.180451393127441]
2f87e0a3-351c-4c72-acd9-d4d3ba0f627d
name-tagging-for-low-resource-incident
null
null
https://aclanthology.org/N16-1029
https://aclanthology.org/N16-1029.pdf
Name Tagging for Low-resource Incident Languages based on Expectation-driven Learning
null
['Heng Ji', 'Daniel Marcu', 'Boliang Zhang', 'Tianlu Wang', 'Ashish Vaswani', 'Kevin Knight', 'Xiaoman Pan']
2016-06-01
null
null
null
naacl-2016-6
['cross-lingual-entity-linking']
['natural-language-processing']
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[-7.431269645690918, 3.586265802383423]
95ec8280-97a8-457e-8ad5-2aa70a33ee2e
upper-limb-movement-recognition-utilising-eeg
2207.08650
null
https://arxiv.org/abs/2207.08650v3
https://arxiv.org/pdf/2207.08650v3.pdf
Upper Limb Movement Recognition utilising EEG and EMG Signals for Rehabilitative Robotics
Upper limb movement classification, which maps input signals to the target activities, is a key building block in the control of rehabilitative robotics. Classifiers are trained for the rehabilitative system to comprehend the desires of the patient whose upper limbs do not function properly. Electromyography (EMG) signals and Electroencephalography (EEG) signals are used widely for upper limb movement classification. By analysing the classification results of the real-time EEG and EMG signals, the system can understand the intention of the user and predict the events that one would like to carry out. Accordingly, it will provide external help to the user. However, the noise in the real-time EEG and EMG data collection process contaminates the effectiveness of the data, which undermines classification performance. Moreover, not all patients process strong EMG signals due to muscle damage and neuromuscular disorder. To address these issues, this paper explores different feature extraction techniques and machine learning and deep learning models for EEG and EMG signals classification and proposes a novel decision-level multisensor fusion technique to integrate EEG signals with EMG signals. This system retrieves effective information from both sources to understand and predict the desire of the user, and thus aid. By testing out the proposed technique on a publicly available WAY-EEG-GAL dataset, which contains EEG and EMG signals that were recorded simultaneously, we manage to conclude the feasibility and effectiveness of the novel system.
['Ravi Suppiah', 'ZiHao Wang']
2022-07-18
null
null
null
null
['electromyography-emg']
['medical']
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[6.914714336395264, 0.21213054656982422]
2a1651a8-1202-40dd-a788-3bb158961d56
scat-robust-self-supervised-contrastive
2307.01488
null
https://arxiv.org/abs/2307.01488v1
https://arxiv.org/pdf/2307.01488v1.pdf
SCAT: Robust Self-supervised Contrastive Learning via Adversarial Training for Text Classification
Despite their promising performance across various natural language processing (NLP) tasks, current NLP systems are vulnerable to textual adversarial attacks. To defend against these attacks, most existing methods apply adversarial training by incorporating adversarial examples. However, these methods have to rely on ground-truth labels to generate adversarial examples, rendering it impractical for large-scale model pre-training which is commonly used nowadays for NLP and many other tasks. In this paper, we propose a novel learning framework called SCAT (Self-supervised Contrastive Learning via Adversarial Training), which can learn robust representations without requiring labeled data. Specifically, SCAT modifies random augmentations of the data in a fully labelfree manner to generate adversarial examples. Adversarial training is achieved by minimizing the contrastive loss between the augmentations and their adversarial counterparts. We evaluate SCAT on two text classification datasets using two state-of-the-art attack schemes proposed recently. Our results show that SCAT can not only train robust language models from scratch, but it can also significantly improve the robustness of existing pre-trained language models. Moreover, to demonstrate its flexibility, we show that SCAT can also be combined with supervised adversarial training to further enhance model robustness.
['Dit-yan Yeung', 'Junjie Wu']
2023-07-04
null
null
null
null
['contrastive-learning', 'contrastive-learning', 'text-classification']
['computer-vision', 'methodology', 'natural-language-processing']
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[5.9524736404418945, 8.047940254211426]
49a9e8e9-de4f-4ed4-96a3-318f8b968ebd
latent-conditioned-policy-gradient-for-multi
2303.08909
null
https://arxiv.org/abs/2303.08909v1
https://arxiv.org/pdf/2303.08909v1.pdf
Latent-Conditioned Policy Gradient for Multi-Objective Deep Reinforcement Learning
Sequential decision making in the real world often requires finding a good balance of conflicting objectives. In general, there exist a plethora of Pareto-optimal policies that embody different patterns of compromises between objectives, and it is technically challenging to obtain them exhaustively using deep neural networks. In this work, we propose a novel multi-objective reinforcement learning (MORL) algorithm that trains a single neural network via policy gradient to approximately obtain the entire Pareto set in a single run of training, without relying on linear scalarization of objectives. The proposed method works in both continuous and discrete action spaces with no design change of the policy network. Numerical experiments in benchmark environments demonstrate the practicality and efficacy of our approach in comparison to standard MORL baselines.
['Chetan Gupta', 'Takuya Kanazawa']
2023-03-15
null
null
null
null
['multi-objective-reinforcement-learning']
['methodology']
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[4.221834659576416, 2.4063339233398438]
219c311f-7a25-4272-8313-73fc76e5523b
alap-ae-as-lite-as-possible-auto-encoder
2203.10363
null
https://arxiv.org/abs/2203.10363v2
https://arxiv.org/pdf/2203.10363v2.pdf
Towards Device Efficient Conditional Image Generation
We present a novel algorithm to reduce tensor compute required by a conditional image generation autoencoder without sacrificing quality of photo-realistic image generation. Our method is device agnostic, and can optimize an autoencoder for a given CPU-only, GPU compute device(s) in about normal time it takes to train an autoencoder on a generic workstation. We achieve this via a two-stage novel strategy where, first, we condense the channel weights, such that, as few as possible channels are used. Then, we prune the nearly zeroed out weight activations, and fine-tune the autoencoder. To maintain image quality, fine-tuning is done via student-teacher training, where we reuse the condensed autoencoder as the teacher. We show performance gains for various conditional image generation tasks: segmentation mask to face images, face images to cartoonization, and finally CycleGAN-based model over multiple compute devices. We perform various ablation studies to justify the claims and design choices, and achieve real-time versions of various autoencoders on CPU-only devices while maintaining image quality, thus enabling at-scale deployment of such autoencoders.
['Gaurav Bharaj', 'Nisarg A. Shah']
2022-03-19
null
null
null
null
['conditional-image-generation']
['computer-vision']
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[11.334035873413086, -0.5330678224563599]
32cbdf79-df74-4dd2-8cf8-6b39277dc79f
learning-to-annotate-modularizing-data
1911.01352
null
https://arxiv.org/abs/1911.01352v3
https://arxiv.org/pdf/1911.01352v3.pdf
Learning from Explanations with Neural Execution Tree
While deep neural networks have achieved impressive performance on a range of NLP tasks, these data-hungry models heavily rely on labeled data, which restricts their applications in scenarios where data annotation is expensive. Natural language (NL) explanations have been demonstrated very useful additional supervision, which can provide sufficient domain knowledge for generating more labeled data over new instances, while the annotation time only doubles. However, directly applying them for augmenting model learning encounters two challenges: (1) NL explanations are unstructured and inherently compositional, which asks for a modularized model to represent their semantics, (2) NL explanations often have large numbers of linguistic variants, resulting in low recall and limited generalization ability. In this paper, we propose a novel Neural Execution Tree (NExT) framework to augment training data for text classification using NL explanations. After transforming NL explanations into executable logical forms by semantic parsing, NExT generalizes different types of actions specified by the logical forms for labeling data instances, which substantially increases the coverage of each NL explanation. Experiments on two NLP tasks (relation extraction and sentiment analysis) demonstrate its superiority over baseline methods. Its extension to multi-hop question answering achieves performance gain with light annotation effort.
['Zhiyuan Liu', 'Yujia Qin', 'Ziqi Wang', 'Xiang Ren', 'Leonardo Neves', 'Qinyuan Ye', 'Wenxuan Zhou', 'Jun Yan']
2019-11-04
null
https://openreview.net/forum?id=rJlUt0EYwS
https://openreview.net/pdf?id=rJlUt0EYwS
iclr-2020-1
['multi-hop-question-answering']
['knowledge-base']
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[9.52722454071045, 6.909777641296387]
2079096a-74ba-48c9-b35b-ba755bf1f557
interpretable-multimodal-emotion-recognition-1
2306.02845
null
https://arxiv.org/abs/2306.02845v1
https://arxiv.org/pdf/2306.02845v1.pdf
Interpretable Multimodal Emotion Recognition using Facial Features and Physiological Signals
This paper aims to demonstrate the importance and feasibility of fusing multimodal information for emotion recognition. It introduces a multimodal framework for emotion understanding by fusing the information from visual facial features and rPPG signals extracted from the input videos. An interpretability technique based on permutation feature importance analysis has also been implemented to compute the contributions of rPPG and visual modalities toward classifying a given input video into a particular emotion class. The experiments on IEMOCAP dataset demonstrate that the emotion classification performance improves by combining the complementary information from multiple modalities.
['Xiaobai Li', 'Puneet Kumar']
2023-06-05
null
null
null
null
['multimodal-emotion-recognition', 'emotion-classification', 'emotion-classification', 'multimodal-emotion-recognition']
['computer-vision', 'computer-vision', 'natural-language-processing', 'speech']
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[13.243236541748047, 5.166940212249756]
e38dc572-8ee7-406c-b0bb-d090db038f4e
powergan-synthesizing-appliance-power
2007.13645
null
https://arxiv.org/abs/2007.13645v1
https://arxiv.org/pdf/2007.13645v1.pdf
PowerGAN: Synthesizing Appliance Power Signatures Using Generative Adversarial Networks
Non-intrusive load monitoring (NILM) allows users and energy providers to gain insight into home appliance electricity consumption using only the building's smart meter. Most current techniques for NILM are trained using significant amounts of labeled appliances power data. The collection of such data is challenging, making data a major bottleneck in creating well generalizing NILM solutions. To help mitigate the data limitations, we present the first truly synthetic appliance power signature generator. Our solution, PowerGAN, is based on conditional, progressively growing, 1-D Wasserstein generative adversarial network (GAN). Using PowerGAN, we are able to synthesise truly random and realistic appliance power data signatures. We evaluate the samples generated by PowerGAN in a qualitative way as well as numerically by using traditional GAN evaluation methods such as the Inception score.
['Alon Harell', 'Stephen Makonin', 'Ivan V. Bajic', 'Richard Jones']
2020-07-20
null
null
null
null
['non-intrusive-load-monitoring', 'non-intrusive-load-monitoring', 'non-intrusive-load-monitoring']
['knowledge-base', 'miscellaneous', 'time-series']
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[16.051918029785156, 7.569221019744873]
30c97348-7193-47a8-a1fe-6d05bee69b26
cloud-based-deep-learning-of-big-eeg-data-for
1702.05192
null
http://arxiv.org/abs/1702.05192v1
http://arxiv.org/pdf/1702.05192v1.pdf
Cloud-based Deep Learning of Big EEG Data for Epileptic Seizure Prediction
Developing a Brain-Computer Interface~(BCI) for seizure prediction can help epileptic patients have a better quality of life. However, there are many difficulties and challenges in developing such a system as a real-life support for patients. Because of the nonstationary nature of EEG signals, normal and seizure patterns vary across different patients. Thus, finding a group of manually extracted features for the prediction task is not practical. Moreover, when using implanted electrodes for brain recording massive amounts of data are produced. This big data calls for the need for safe storage and high computational resources for real-time processing. To address these challenges, a cloud-based BCI system for the analysis of this big EEG data is presented. First, a dimensionality-reduction technique is developed to increase classification accuracy as well as to decrease the communication bandwidth and computation time. Second, following a deep-learning approach, a stacked autoencoder is trained in two steps for unsupervised feature extraction and classification. Third, a cloud-computing solution is proposed for real-time analysis of big EEG data. The results on a benchmark clinical dataset illustrate the superiority of the proposed patient-specific BCI as an alternative method and its expected usefulness in real-life support of epilepsy patients.
['Hamid Soltanian-Zadeh', 'Mohammad-Parsa Hosseini', 'Dario Pompili', 'Kost Elisevich']
2017-02-17
null
null
null
null
['seizure-prediction']
['medical']
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[13.235640525817871, 3.4766790866851807]
8d8e56d9-8db4-41ec-b910-1ef5560b25aa
how-do-we-answer-complex-questions-discourse
null
null
https://openreview.net/forum?id=shZUViLG-DS
https://openreview.net/pdf?id=shZUViLG-DS
How do we answer complex questions: Discourse structure of long form answers
Long form answers, consisting of multiple sentences, can provide nuanced and comprehensive answers to a broader set of questions. However, little prior work exists on this task. To better understand this complex task, we study the functional structure of long form answers on two datasets, Natural Questions~\cite{kwiatkowski2019natural} and ELI5~\cite{Fan2019ELI5LF}. Our main goal is to understand how humans organize information to craft complex answers. We develop an ontology of sentence-level functional roles for long form answers, and annotate 3.3k sentences in 542 examples. Our annotated data enables training a reliable role classifier that can be used for automatic analysis and thus reveals machine generated answers are structured worse than human written answers. Our data further yields an extractive summarization dataset for long form answers, giving models the ability to identify a concise answer to a complex query.
['Anonymous']
2021-11-16
null
null
null
acl-arr-november-2021-11
['extractive-summarization']
['natural-language-processing']
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[11.62386703491211, 8.205540657043457]
88a9da2b-109f-43ad-ad86-ae551b560818
pose-graph-optimization-for-unsupervised
1903.06315
null
http://arxiv.org/abs/1903.06315v1
http://arxiv.org/pdf/1903.06315v1.pdf
Pose Graph Optimization for Unsupervised Monocular Visual Odometry
Unsupervised Learning based monocular visual odometry (VO) has lately drawn significant attention for its potential in label-free leaning ability and robustness to camera parameters and environmental variations. However, partially due to the lack of drift correction technique, these methods are still by far less accurate than geometric approaches for large-scale odometry estimation. In this paper, we propose to leverage graph optimization and loop closure detection to overcome limitations of unsupervised learning based monocular visual odometry. To this end, we propose a hybrid VO system which combines an unsupervised monocular VO called NeuralBundler with a pose graph optimization back-end. NeuralBundler is a neural network architecture that uses temporal and spatial photometric loss as main supervision and generates a windowed pose graph consists of multi-view 6DoF constraints. We propose a novel pose cycle consistency loss to relieve the tensions in the windowed pose graph, leading to improved performance and robustness. In the back-end, a global pose graph is built from local and loop 6DoF constraints estimated by NeuralBundler and is optimized over SE(3). Empirical evaluation on the KITTI odometry dataset demonstrates that 1) NeuralBundler achieves state-of-the-art performance on unsupervised monocular VO estimation, and 2) our whole approach can achieve efficient loop closing and show favorable overall translational accuracy compared to established monocular SLAM systems.
['Yang Li', 'Yoshitaka Ushiku', 'Tatsuya Harada']
2019-03-15
null
null
null
null
['loop-closure-detection', 'monocular-visual-odometry']
['computer-vision', 'robots']
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[7.9466118812561035, -2.14603853225708]
42a9b6ba-5f03-4a84-8191-e5dc34cc8521
cross-modal-consensus-network-forweakly
null
null
https://arxiv.org/abs/2107.12589#:~:text=Cross%2Dmodal%20Consensus%20Network%20for%20Weakly%20Supervised%20Temporal%20Action%20Localization,-Fa%2DTing%20Hong&text=Weakly%20supervised%20temporal%20action%20localization%20(WS%2DTAL)%20is%20a,with%20video%2Dlevel%20categorical%20supervision.
https://arxiv.org/pdf/2107.12589.pdf
Cross-modal Consensus Network forWeakly Supervised Temporal Action Localization
Weakly supervised temporal action localization (WS-TAL) is a challenging task that aims to localize action instances in the given video with video-level categorical supervision. Both appearance and motion features are used in previous works, while they do not utilize them in a proper way but apply simple concatenation or score-level fusion. In this work, we argue that the features extracted from the pretrained extractor, e.g., I3D, are not the WS-TALtask-specific features, thus the feature re-calibration is needed for reducing the task-irrelevant information redundancy. Therefore, we propose a cross-modal consensus network (CO2-Net) to tackle this problem. In CO2-Net, we mainly introduce two identical proposed cross-modal consensus modules (CCM) that design a cross-modal attention mechanism to filter out the task-irrelevant information redundancy using the global information from the main modality and the cross-modal local information of the auxiliary modality. Moreover, we treat the attention weights derived from each CCMas the pseudo targets of the attention weights derived from another CCM to maintain the consistency between the predictions derived from two CCMs, forming a mutual learning manner. Finally, we conduct extensive experiments on two common used temporal action localization datasets, THUMOS14 and ActivityNet1.2, to verify our method and achieve the state-of-the-art results. The experimental results show that our proposed cross-modal consensus module can produce more representative features for temporal action localization.
['Wei-Shi Zheng', 'Ying Shan', 'Dan Xu', 'Jia-Chang Feng', 'Fa-Ting Hong']
2021-07-27
null
null
null
proceedings-of-the-29th-acm-international
['weakly-supervised-temporal-action']
['computer-vision']
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[8.543191909790039, 0.7138928771018982]
0f8df7b8-4c79-482d-aeff-3b9f401efb87
you-only-need-two-detectors-to-achieve-multi
2304.08709
null
https://arxiv.org/abs/2304.08709v1
https://arxiv.org/pdf/2304.08709v1.pdf
You Only Need Two Detectors to Achieve Multi-Modal 3D Multi-Object Tracking
Firstly, a new multi-object tracking framework is proposed in this paper based on multi-modal fusion. By integrating object detection and multi-object tracking into the same model, this framework avoids the complex data association process in the classical TBD paradigm, and requires no additional training. Secondly, confidence of historical trajectory regression is explored, possible states of a trajectory in the current frame (weak object or strong object) are analyzed and a confidence fusion module is designed to guide non-maximum suppression of trajectory and detection for ordered association. Finally, extensive experiments are conducted on the KITTI and Waymo datasets. The results show that the proposed method can achieve robust tracking by using only two modal detectors and it is more accurate than many of the latest TBD paradigm-based multi-modal tracking methods. The source codes of the proposed method are available at https://github.com/wangxiyang2022/YONTD-MOT
['Mingguang Huang', 'Ting Meng', 'Chunyun Fu', 'JiaWei He', 'Xiyang Wang']
2023-04-18
null
null
null
null
['3d-multi-object-tracking']
['computer-vision']
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[6.512155055999756, -2.033923387527466]
3202a06d-4703-4147-8e5f-18551677b606
machine-learning-driven-language-assessment
null
null
https://aclanthology.org/2020.tacl-1.17
https://aclanthology.org/2020.tacl-1.17.pdf
Machine Learning--Driven Language Assessment
We describe a method for rapidly creating language proficiency assessments, and provide experimental evidence that such tests can be valid, reliable, and secure. Our approach is the first to use machine learning and natural language processing to induce proficiency scales based on a given standard, and then use linguistic models to estimate item difficulty directly for computer-adaptive testing. This alleviates the need for expensive pilot testing with human subjects. We used these methods to develop an online proficiency exam called the Duolingo English Test, and demonstrate that its scores align significantly with other high-stakes English assessments. Furthermore, our approach produces test scores that are highly reliable, while generating item banks large enough to satisfy security requirements.
['Masato Hagiwara', 'Geoffrey T. LaFlair', 'Burr Settles']
2020-01-01
null
null
null
tacl-2020-1
['skills-assessment']
['computer-vision']
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[11.052508354187012, 9.751728057861328]
2af2f006-5ca3-4d79-8211-f15f79920d3a
interactive-evidence-detection-train-state-of
null
null
https://aclanthology.org/D19-6613
https://aclanthology.org/D19-6613.pdf
Interactive Evidence Detection: train state-of-the-art model out-of-domain or simple model interactively?
Finding evidence is of vital importance in research as well as fact checking and an evidence detection method would be useful in speeding up this process. However, when addressing a new topic there is no training data and there are two approaches to get started. One could use large amounts of out-of-domain data to train a state-of-the-art method, or to use the small data that a person creates while working on the topic. In this paper, we address this problem in two steps. First, by simulating users who read source documents and label sentences they can use as evidence, thereby creating small amounts of training data for an interactively trained evidence detection model; and second, by comparing such an interactively trained model against a pre-trained model that has been trained on large out-of-domain data. We found that an interactively trained model not only often out-performs a state-of-the-art model but also requires significantly lower amounts of computational resources. Therefore, especially when computational resources are scarce, e.g. no GPU available, training a smaller model on the fly is preferable to training a well generalising but resource hungry out-of-domain model.
['Chris Stahlhut']
2019-11-01
null
null
null
ws-2019-11
['small-data']
['computer-vision']
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[9.562148094177246, 8.145552635192871]
3c0e13d3-5e5a-4f2c-a00b-ffe13608e6bb
bone-marrow-sparing-for-cervical-cancer
2204.09278
null
https://arxiv.org/abs/2204.09278v1
https://arxiv.org/pdf/2204.09278v1.pdf
Bone marrow sparing for cervical cancer radiotherapy on multimodality medical images
Cervical cancer threatens the health of women seriously. Radiotherapy is one of the main therapy methods but with high risk of acute hematologic toxicity. Delineating the bone marrow (BM) for sparing using computer tomography (CT) images to plan before radiotherapy can effectively avoid this risk. Comparing with magnetic resonance (MR) images, CT lacks the ability to express the activity of BM. Thus, in current clinical practice, medical practitioners manually delineate the BM on CT images by corresponding to MR images. However, the time?consuming delineating BM by hand cannot guarantee the accuracy due to the inconsistency of the CT-MR multimodal images. In this study, we propose a multimodal image oriented automatic registration method for pelvic BM sparing, which consists of three-dimensional bone point cloud reconstruction, a local spherical system iteration closest point registration for marking BM on CT images. Experiments on patient dataset reveal that our proposed method can enhance the multimodal image registration accuracy and efficiency for medical practitioners in sparing BM of cervical cancer radiotherapy. The method proposed in this contribution might also provide references for similar studies in other clinical application.
['Xiuming Zhang', 'Han Gao', 'Hanzi Xu', 'Kexin Gan', 'Jie Yuan', 'Ying Sun', 'Yuening Wang']
2022-04-20
null
null
null
null
['point-cloud-reconstruction']
['computer-vision']
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[14.223434448242188, -2.7155704498291016]
04527a5d-de6f-4632-82c7-d8ace046d6aa
geolocation-of-cultural-heritage-using-multi
2209.03638
null
https://arxiv.org/abs/2209.03638v1
https://arxiv.org/pdf/2209.03638v1.pdf
Geolocation of Cultural Heritage using Multi-View Knowledge Graph Embedding
Knowledge Graphs (KGs) have proven to be a reliable way of structuring data. They can provide a rich source of contextual information about cultural heritage collections. However, cultural heritage KGs are far from being complete. They are often missing important attributes such as geographical location, especially for sculptures and mobile or indoor entities such as paintings. In this paper, we first present a framework for ingesting knowledge about tangible cultural heritage entities from various data sources and their connected multi-hop knowledge into a geolocalized KG. Secondly, we propose a multi-view learning model for estimating the relative distance between a given pair of cultural heritage entities, based on the geographical as well as the knowledge connections of the entities.
['Marcello Pelillo', 'Alessio Del Bue', 'Diego Pilutti', 'Stuart James', 'Feliks Hibraj', 'Sebastiano Vascon', 'Hebatallah A. Mohamed']
2022-09-08
null
null
null
null
['multi-view-learning', 'knowledge-graph-embedding']
['computer-vision', 'graphs']
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[8.87756633758545, 7.877692699432373]
167a92a7-df17-4acd-b9b7-4caf6bd1428f
side-channel-assisted-inference-leakage-from
2304.01990
null
https://arxiv.org/abs/2304.01990v1
https://arxiv.org/pdf/2304.01990v1.pdf
Side Channel-Assisted Inference Leakage from Machine Learning-based ECG Classification
The Electrocardiogram (ECG) measures the electrical cardiac activity generated by the heart to detect abnormal heartbeat and heart attack. However, the irregular occurrence of the abnormalities demands continuous monitoring of heartbeats. Machine learning techniques are leveraged to automate the task to reduce labor work needed during monitoring. In recent years, many companies have launched products with ECG monitoring and irregular heartbeat alert. Among all classification algorithms, the time series-based algorithm dynamic time warping (DTW) is widely adopted to undertake the ECG classification task. Though progress has been achieved, the DTW-based ECG classification also brings a new attacking vector of leaking the patients' diagnosis results. This paper shows that the ECG input samples' labels can be stolen via a side-channel attack, Flush+Reload. In particular, we first identify the vulnerability of DTW for ECG classification, i.e., the correlation between warping path choice and prediction results. Then we implement an attack that leverages Flush+Reload to monitor the warping path selection with known ECG data and then build a predictor for constructing the relation between warping path selection and labels of input ECG samples. Based on experiments, we find that the Flush+Reload-based inference leakage can achieve an 84.0\% attacking success rate to identify the labels of the two samples in DTW.
['Han Wang', 'Houman Homayoun', 'Chongzhou Fang', 'Ning Miao', 'Jialin Liu']
2023-04-04
null
null
null
null
['ecg-classification', 'dynamic-time-warping']
['medical', 'time-series']
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[14.296346664428711, 3.201824426651001]
e6130d09-a79b-4d26-8c8b-36af1e69a4ac
cycle-sum-cycle-consistent-adversarial-lstm
1904.08265
null
http://arxiv.org/abs/1904.08265v1
http://arxiv.org/pdf/1904.08265v1.pdf
Cycle-SUM: Cycle-consistent Adversarial LSTM Networks for Unsupervised Video Summarization
In this paper, we present a novel unsupervised video summarization model that requires no manual annotation. The proposed model termed Cycle-SUM adopts a new cycle-consistent adversarial LSTM architecture that can effectively maximize the information preserving and compactness of the summary video. It consists of a frame selector and a cycle-consistent learning based evaluator. The selector is a bi-direction LSTM network that learns video representations that embed the long-range relationships among video frames. The evaluator defines a learnable information preserving metric between original video and summary video and "supervises" the selector to identify the most informative frames to form the summary video. In particular, the evaluator is composed of two generative adversarial networks (GANs), in which the forward GAN is learned to reconstruct original video from summary video while the backward GAN learns to invert the processing. The consistency between the output of such cycle learning is adopted as the information preserving metric for video summarization. We demonstrate the close relation between mutual information maximization and such cycle learning procedure. Experiments on two video summarization benchmark datasets validate the state-of-the-art performance and superiority of the Cycle-SUM model over previous baselines.
['Jiashi Feng', 'Li Zhou', 'Li Yuan', 'Francis EH Tay', 'Ping Li']
2019-04-17
null
null
null
null
['unsupervised-video-summarization']
['computer-vision']
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[10.46061897277832, 0.4141937792301178]
7bf221b6-35b3-4af0-956a-ffecac2fd423
unicorn-a-unified-multi-tasking-model-for
null
null
https://dl.acm.org/doi/abs/10.1145/3588938
https://dl.acm.org/doi/pdf/10.1145/3588938
Unicorn: A Unified Multi-tasking Model for Supporting Matching Tasks in Data Integration
Data matching - which decides whether two data elements (e.g., string, tuple, column, or knowledge graph entity) are the "same" (a.k.a. a match) - is a key concept in data integration, such as entity matching and schema matching. The widely used practice is to build task-specific or even dataset-specific solutions, which are hard to generalize and disable the opportunities of knowledge sharing that can be learned from different datasets and multiple tasks. In this paper, we propose Unicorn, a unified model for generally supporting common data matching tasks. Unicorn can enable knowledge sharing by learning from multiple tasks and multiple datasets, and can also support zero-shot prediction for new tasks with zero labeled matching/non-matching pairs. However, building such a unified model is challenging due to heterogeneous formats of input data elements and various matching semantics of multiple tasks. To address the challenges, Unicorn employs one generic Encoder that converts any pair of data elements (a, b) into a learned representation, and uses a Matcher, which is a binary classifier, to decide whether a matches b. To align matching semantics of multiple tasks, Unicorn adopts a mixture-of-experts model that enhances the learned representation into a better representation. We conduct extensive experiments using 20 datasets on seven well-studied data matching tasks, and find that our unified model can achieve better performance on most tasks and on average, compared with the state-of-the-art specific models trained for ad-hoc tasks and datasets separately. Moreover, Unicorn can also well serve new matching tasks with zero-shot learning.
['Song Gao', 'Xiaofeng Jia', 'Xiaoyong Du', 'Guoliang Li', 'Peng Wang', 'Nan Tang', 'Ju Fan', 'Jianhong Tu']
2023-05-01
null
null
null
sigmod-pods-2023-5
['data-integration', 'zero-shot-learning', 'entity-resolution']
['knowledge-base', 'methodology', 'natural-language-processing']
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[9.533543586730957, 8.527593612670898]
49dfc015-6ef8-4bb8-b622-8fcdd3a8c410
p-stmo-pre-trained-spatial-temporal-many-to
2203.07628
null
https://arxiv.org/abs/2203.07628v2
https://arxiv.org/pdf/2203.07628v2.pdf
P-STMO: Pre-Trained Spatial Temporal Many-to-One Model for 3D Human Pose Estimation
This paper introduces a novel Pre-trained Spatial Temporal Many-to-One (P-STMO) model for 2D-to-3D human pose estimation task. To reduce the difficulty of capturing spatial and temporal information, we divide this task into two stages: pre-training (Stage I) and fine-tuning (Stage II). In Stage I, a self-supervised pre-training sub-task, termed masked pose modeling, is proposed. The human joints in the input sequence are randomly masked in both spatial and temporal domains. A general form of denoising auto-encoder is exploited to recover the original 2D poses and the encoder is capable of capturing spatial and temporal dependencies in this way. In Stage II, the pre-trained encoder is loaded to STMO model and fine-tuned. The encoder is followed by a many-to-one frame aggregator to predict the 3D pose in the current frame. Especially, an MLP block is utilized as the spatial feature extractor in STMO, which yields better performance than other methods. In addition, a temporal downsampling strategy is proposed to diminish data redundancy. Extensive experiments on two benchmarks show that our method outperforms state-of-the-art methods with fewer parameters and less computational overhead. For example, our P-STMO model achieves 42.1mm MPJPE on Human3.6M dataset when using 2D poses from CPN as inputs. Meanwhile, it brings a 1.5-7.1 times speedup to state-of-the-art methods. Code is available at https://github.com/paTRICK-swk/P-STMO.
['Wen Gao', 'Siwei Ma', 'Shanshe Wang', 'Xinfeng Zhang', 'Zhenhua Liu', 'Wenkang Shan']
2022-03-15
null
null
null
null
['monocular-3d-human-pose-estimation']
['computer-vision']
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[7.216409206390381, -0.6071715354919434]
611f8233-428c-432b-a82b-4bae83b5ba87
rord-rotation-robust-descriptors-and
2103.08573
null
https://arxiv.org/abs/2103.08573v4
https://arxiv.org/pdf/2103.08573v4.pdf
RoRD: Rotation-Robust Descriptors and Orthographic Views for Local Feature Matching
The use of local detectors and descriptors in typical computer vision pipelines work well until variations in viewpoint and appearance change become extreme. Past research in this area has typically focused on one of two approaches to this challenge: the use of projections into spaces more suitable for feature matching under extreme viewpoint changes, and attempting to learn features that are inherently more robust to viewpoint change. In this paper, we present a novel framework that combines learning of invariant descriptors through data augmentation and orthographic viewpoint projection. We propose rotation-robust local descriptors, learnt through training data augmentation based on rotation homographies, and a correspondence ensemble technique that combines vanilla feature correspondences with those obtained through rotation-robust features. Using a range of benchmark datasets as well as contributing a new bespoke dataset for this research domain, we evaluate the effectiveness of the proposed approach on key tasks including pose estimation and visual place recognition. Our system outperforms a range of baseline and state-of-the-art techniques, including enabling higher levels of place recognition precision across opposing place viewpoints and achieves practically-useful performance levels even under extreme viewpoint changes.
['K. Madhava Krishna', 'Michael Milford', 'Sourav Garg', 'Satyajit Tourani', 'Kinal Mehta', 'Aniket Gujarathi', 'Udit Singh Parihar']
2021-03-15
null
null
null
null
['visual-place-recognition']
['computer-vision']
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[7.8513922691345215, -2.150010108947754]
44c6ebde-79c6-4a65-b158-6c2a4399503e
mwptoolkit-an-open-source-framework-for-deep
2109.00799
null
https://arxiv.org/abs/2109.00799v2
https://arxiv.org/pdf/2109.00799v2.pdf
MWPToolkit: An Open-Source Framework for Deep Learning-Based Math Word Problem Solvers
Developing automatic Math Word Problem (MWP) solvers has been an interest of NLP researchers since the 1960s. Over the last few years, there are a growing number of datasets and deep learning-based methods proposed for effectively solving MWPs. However, most existing methods are benchmarked soly on one or two datasets, varying in different configurations, which leads to a lack of unified, standardized, fair, and comprehensive comparison between methods. This paper presents MWPToolkit, the first open-source framework for solving MWPs. In MWPToolkit, we decompose the procedure of existing MWP solvers into multiple core components and decouple their models into highly reusable modules. We also provide a hyper-parameter search function to boost the performance. In total, we implement and compare 17 MWP solvers on 4 widely-used single equation generation benchmarks and 2 multiple equations generation benchmarks. These features enable our MWPToolkit to be suitable for researchers to reproduce advanced baseline models and develop new MWP solvers quickly. Code and documents are available at https://github.com/LYH-YF/MWPToolkit.
['Ee-Peng Lim', 'Dongxiang Zhang', 'Yan Wang', 'Bing Tian Dai', 'Yunshi Lan', 'Qiyuan Zhang', 'Lei Wang', 'Yihuai Lan']
2021-09-02
null
null
null
null
['math-word-problem-solving', 'math-word-problem-solving', 'math-word-problem-solving']
['knowledge-base', 'reasoning', 'time-series']
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[9.74284553527832, 7.435670375823975]
5fd64f65-a532-420b-ac8c-7672b15e81e3
moet-interpretable-and-verifiable
1906.06717
null
https://arxiv.org/abs/1906.06717v4
https://arxiv.org/pdf/1906.06717v4.pdf
MoËT: Mixture of Expert Trees and its Application to Verifiable Reinforcement Learning
Rapid advancements in deep learning have led to many recent breakthroughs. While deep learning models achieve superior performance, often statistically better than humans, their adoption into safety-critical settings, such as healthcare or self-driving cars is hindered by their inability to provide safety guarantees or to expose the inner workings of the model in a human understandable form. We present Mo\"ET, a novel model based on Mixture of Experts, consisting of decision tree experts and a generalized linear model gating function. Thanks to such gating function the model is more expressive than the standard decision tree. To support non-differentiable decision trees as experts, we formulate a novel training procedure. In addition, we introduce a hard thresholding version, Mo\"ETH, in which predictions are made solely by a single expert chosen via the gating function. Thanks to that property, Mo\"ETH allows each prediction to be easily decomposed into a set of logical rules in a form which can be easily verified. While Mo\"ET is a general use model, we illustrate its power in the reinforcement learning setting. By training Mo\"ET models using an imitation learning procedure on deep RL agents we outperform the previous state-of-the-art technique based on decision trees while preserving the verifiability of the models. Moreover, we show that Mo\"ET can also be used in real-world supervised problems on which it outperforms other verifiable machine learning models.
['Sarfraz Khurshid', 'Rishabh Singh', 'Mladen Nikolic', 'Kaiyuan Wang', 'Andrija Petrovic', 'Marko Vasic']
2019-06-16
null
null
null
null
['game-of-go']
['playing-games']
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[4.195561408996582, 1.6402093172073364]
551a0eb4-6af9-4969-832d-bc918553d0b1
back-to-mlp-a-simple-baseline-for-human
2207.01567
null
https://arxiv.org/abs/2207.01567v3
https://arxiv.org/pdf/2207.01567v3.pdf
Back to MLP: A Simple Baseline for Human Motion Prediction
This paper tackles the problem of human motion prediction, consisting in forecasting future body poses from historically observed sequences. State-of-the-art approaches provide good results, however, they rely on deep learning architectures of arbitrary complexity, such as Recurrent Neural Networks(RNN), Transformers or Graph Convolutional Networks(GCN), typically requiring multiple training stages and more than 2 million parameters. In this paper, we show that, after combining with a series of standard practices, such as applying Discrete Cosine Transform(DCT), predicting residual displacement of joints and optimizing velocity as an auxiliary loss, a light-weight network based on multi-layer perceptrons(MLPs) with only 0.14 million parameters can surpass the state-of-the-art performance. An exhaustive evaluation on the Human3.6M, AMASS, and 3DPW datasets shows that our method, named siMLPe, consistently outperforms all other approaches. We hope that our simple method could serve as a strong baseline for the community and allow re-thinking of the human motion prediction problem. The code is publicly available at \url{https://github.com/dulucas/siMLPe}.
['Francesc Moreno-Noguer', 'Xavier Alameda-Pineda', 'Vincent Lepetit', 'Xi Shen', 'Yuming Du', 'Wen Guo']
2022-07-04
null
null
null
null
['human-pose-forecasting']
['computer-vision']
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[7.254481792449951, -0.15771237015724182]
49189313-13d8-4d40-ae3e-0d5661b0fa95
superadditivity-and-convex-optimization-for
null
null
https://ieeexplore.ieee.org/document/9804854
https://evoid.de/kostrykin2023-accepted-manuscript.pdf
Superadditivity and Convex Optimization for Globally Optimal Cell Segmentation using Deformable Shape Models
Cell nuclei segmentation is challenging due to shape variation and closely clustered or partially overlapping objects. Most previous methods are not globally optimal, limited to elliptical models, or are computationally expensive. In this work, we introduce a globally optimal approach based on deformable shape models and global energy minimization for cell nuclei segmentation and cluster splitting. We propose an implicit parameterization of deformable shape models and show that it leads to a convex energy. Convex energy minimization yields the global solution independently of the initialization, is fast, and robust. To jointly perform cell nuclei segmentation and cluster splitting, we developed a novel iterative global energy minimization method, which leverages the inherent property of superadditivity of the convex energy. This property exploits the lower bound of the energy of the union of the models and improves the computational efficiency. Our method provably determines a solution close to global optimality. In addition, we derive a closed-form solution of the proposed global minimization based on the superadditivity property for non-clustered cell nuclei. We evaluated our method using fluorescence microscopy images of five different cell types comprising various challenges, and performed a quantitative comparison with previous methods. Our method achieved state-of-the-art or improved performance.
['Karl Rohr', 'Leonid Kostrykin']
2022-06-23
null
null
null
ieee-transactions-on-pattern-analysis-and-25
['cell-segmentation']
['medical']
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[14.478926658630371, -3.2107133865356445]
7778100d-b4e0-4698-8e21-3da96d1825dd
scene-text-recognition-with-permuted
2207.06966
null
https://arxiv.org/abs/2207.06966v1
https://arxiv.org/pdf/2207.06966v1.pdf
Scene Text Recognition with Permuted Autoregressive Sequence Models
Context-aware STR methods typically use internal autoregressive (AR) language models (LM). Inherent limitations of AR models motivated two-stage methods which employ an external LM. The conditional independence of the external LM on the input image may cause it to erroneously rectify correct predictions, leading to significant inefficiencies. Our method, PARSeq, learns an ensemble of internal AR LMs with shared weights using Permutation Language Modeling. It unifies context-free non-AR and context-aware AR inference, and iterative refinement using bidirectional context. Using synthetic training data, PARSeq achieves state-of-the-art (SOTA) results in STR benchmarks (91.9% accuracy) and more challenging datasets. It establishes new SOTA results (96.0% accuracy) when trained on real data. PARSeq is optimal on accuracy vs parameter count, FLOPS, and latency because of its simple, unified structure and parallel token processing. Due to its extensive use of attention, it is robust on arbitrarily-oriented text which is common in real-world images. Code, pretrained weights, and data are available at: https://github.com/baudm/parseq.
['Rowel Atienza', 'Darwin Bautista']
2022-07-14
null
null
null
null
['scene-text-recognition']
['computer-vision']
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[10.880827903747559, 7.213721752166748]
a95c61ff-dbd3-47a3-85d8-7d8f8fc511a2
transformer-based-assignment-decision-network
2208.03571
null
https://arxiv.org/abs/2208.03571v2
https://arxiv.org/pdf/2208.03571v2.pdf
Transformer-based assignment decision network for multiple object tracking
Data association is a crucial component for any multiple object tracking (MOT) method that follows the tracking-by-detection paradigm. To generate complete trajectories such methods employ a data association process to establish assignments between detections and existing targets during each timestep. Recent data association approaches try to solve a multi-dimensional linear assignment task or a network flow minimization problem or either tackle it via multiple hypotheses tracking. However, during inference an optimization step that computes optimal assignments is required for every sequence frame adding significant computational complexity in any given solution. To this end, in the context of this work we introduce Transformer-based Assignment Decision Network (TADN) that tackles data association without the need of any explicit optimization during inference. In particular, TADN can directly infer assignment pairs between detections and active targets in a single forward pass of the network. We have integrated TADN in a rather simple MOT framework, we designed a novel training strategy for efficient end-to-end training and demonstrate the high potential of our approach for online visual tracking-by-detection MOT on two popular benchmarks, i.e. MOT17 and UA-DETRAC. Our proposed approach outperforms the state-of-the-art in most evaluation metrics despite its simple nature as a tracker which lacks significant auxiliary components such as occlusion handling or re-identification. The implementation of our method is publicly available at https://github.com/psaltaath/tadn-mot.
['Konstantinos Karantzalos', 'Vasileios Tsironis', 'Athena Psalta']
2022-08-06
null
null
null
null
['visual-tracking', 'occlusion-handling']
['computer-vision', 'computer-vision']
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[6.462277412414551, -2.0296738147735596]
2576020c-a210-4d98-94a9-4595e6cfbfe2
digest-deeply-supervised-knowledge-transfer
2211.07993
null
https://arxiv.org/abs/2211.07993v1
https://arxiv.org/pdf/2211.07993v1.pdf
DIGEST: Deeply supervIsed knowledGE tranSfer neTwork learning for brain tumor segmentation with incomplete multi-modal MRI scans
Brain tumor segmentation based on multi-modal magnetic resonance imaging (MRI) plays a pivotal role in assisting brain cancer diagnosis, treatment, and postoperative evaluations. Despite the achieved inspiring performance by existing automatic segmentation methods, multi-modal MRI data are still unavailable in real-world clinical applications due to quite a few uncontrollable factors (e.g. different imaging protocols, data corruption, and patient condition limitations), which lead to a large performance drop during practical applications. In this work, we propose a Deeply supervIsed knowledGE tranSfer neTwork (DIGEST), which achieves accurate brain tumor segmentation under different modality-missing scenarios. Specifically, a knowledge transfer learning frame is constructed, enabling a student model to learn modality-shared semantic information from a teacher model pretrained with the complete multi-modal MRI data. To simulate all the possible modality-missing conditions under the given multi-modal data, we generate incomplete multi-modal MRI samples based on Bernoulli sampling. Finally, a deeply supervised knowledge transfer loss is designed to ensure the consistency of the teacher-student structure at different decoding stages, which helps the extraction of inherent and effective modality representations. Experiments on the BraTS 2020 dataset demonstrate that our method achieves promising results for the incomplete multi-modal MR image segmentation task.
['Shanshan Wang', 'Yan Xi', 'Xiawu Zheng', 'Weijian Huang', 'Cheng Li', 'Haoran Li']
2022-11-15
null
null
null
null
['tumor-segmentation', 'brain-tumor-segmentation']
['computer-vision', 'medical']
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[14.519948959350586, -2.291588306427002]
47b826ce-1019-4800-9e5a-3dd3e694afde
deep-video-inpainting-detection
2101.11080
null
https://arxiv.org/abs/2101.11080v1
https://arxiv.org/pdf/2101.11080v1.pdf
Deep Video Inpainting Detection
This paper studies video inpainting detection, which localizes an inpainted region in a video both spatially and temporally. In particular, we introduce VIDNet, Video Inpainting Detection Network, which contains a two-stream encoder-decoder architecture with attention module. To reveal artifacts encoded in compression, VIDNet additionally takes in Error Level Analysis frames to augment RGB frames, producing multimodal features at different levels with an encoder. Exploring spatial and temporal relationships, these features are further decoded by a Convolutional LSTM to predict masks of inpainted regions. In addition, when detecting whether a pixel is inpainted or not, we present a quad-directional local attention module that borrows information from its surrounding pixels from four directions. Extensive experiments are conducted to validate our approach. We demonstrate, among other things, that VIDNet not only outperforms by clear margins alternative inpainting detection methods but also generalizes well on novel videos that are unseen during training.
['Ser-Nam Lim', 'Abhinav Shrivastava', 'Larry S. Davis', 'Zuxuan Wu', 'Ning Yu', 'Peng Zhou']
2021-01-26
null
null
null
null
['video-inpainting']
['computer-vision']
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[10.814719200134277, -1.3460184335708618]
edf52b34-4b81-4c6d-9792-1e9e28cbd870
trihorn-net-a-model-for-accurate-depth-based
2206.07117
null
https://arxiv.org/abs/2206.07117v2
https://arxiv.org/pdf/2206.07117v2.pdf
TriHorn-Net: A Model for Accurate Depth-Based 3D Hand Pose Estimation
3D hand pose estimation methods have made significant progress recently. However, the estimation accuracy is often far from sufficient for specific real-world applications, and thus there is significant room for improvement. This paper proposes TriHorn-Net, a novel model that uses specific innovations to improve hand pose estimation accuracy on depth images. The first innovation is the decomposition of the 3D hand pose estimation into the estimation of 2D joint locations in the depth image space (UV), and the estimation of their corresponding depths aided by two complementary attention maps. This decomposition prevents depth estimation, which is a more difficult task, from interfering with the UV estimations at both the prediction and feature levels. The second innovation is PixDropout, which is, to the best of our knowledge, the first appearance-based data augmentation method for hand depth images. Experimental results demonstrate that the proposed model outperforms the state-of-the-art methods on three public benchmark datasets. Our implementation is available at https://github.com/mrezaei92/TriHorn-Net.
['Vassilis Athitsos', 'Razieh Rastgoo', 'Mohammad Rezaei']
2022-06-14
null
null
null
null
['3d-hand-pose-estimation', '3d-hand-pose-estimation']
['computer-vision', 'graphs']
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[6.61602258682251, -0.7122858166694641]
70a8d8ea-65c5-49d7-81ab-65b7788519ee
demystifying-fraudulent-transactions-and
2306.06108
null
https://arxiv.org/abs/2306.06108v1
https://arxiv.org/pdf/2306.06108v1.pdf
Demystifying Fraudulent Transactions and Illicit Nodes in the Bitcoin Network for Financial Forensics
Blockchain provides the unique and accountable channel for financial forensics by mining its open and immutable transaction data. A recent surge has been witnessed by training machine learning models with cryptocurrency transaction data for anomaly detection, such as money laundering and other fraudulent activities. This paper presents a holistic applied data science approach to fraud detection in the Bitcoin network with two original contributions. First, we contribute the Elliptic++ dataset, which extends the Elliptic transaction dataset to include over 822k Bitcoin wallet addresses (nodes), each with 56 features, and 1.27M temporal interactions. This enables both the detection of fraudulent transactions and the detection of illicit addresses (actors) in the Bitcoin network by leveraging four types of graph data: (i) the transaction-to-transaction graph, representing the money flow in the Bitcoin network, (ii) the address-to-address interaction graph, capturing the types of transaction flows between Bitcoin addresses, (iii) the address-transaction graph, representing the bi-directional money flow between addresses and transactions (BTC flow from input address to one or more transactions and BTC flow from a transaction to one or more output addresses), and (iv) the user entity graph, capturing clusters of Bitcoin addresses representing unique Bitcoin users. Second, we perform fraud detection tasks on all four graphs by using diverse machine learning algorithms. We show that adding enhanced features from the address-to-address and the address-transaction graphs not only assists in effectively detecting both illicit transactions and illicit addresses, but also assists in gaining in-depth understanding of the root cause of money laundering vulnerabilities in cryptocurrency transactions and the strategies for fraud detection and prevention. Released at github.com/git-disl/EllipticPlusPlus.
['Ling Liu', 'Youssef Elmougy']
2023-05-25
null
null
null
null
['anomaly-detection', 'fraud-detection']
['methodology', 'miscellaneous']
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[6.652081489562988, 6.447898864746094]
81d9e1c1-84eb-4aa2-b046-6a24836eff5b
can-humor-prediction-datasets-be-used-for
null
null
https://aclanthology.org/2020.figlang-1.25
https://aclanthology.org/2020.figlang-1.25.pdf
Can Humor Prediction Datasets be used for Humor Generation? Humorous Headline Generation via Style Transfer
Understanding and identifying humor has been increasingly popular, as seen by the number of datasets created to study humor. However, one area of humor research, humor generation, has remained a difficult task, with machine generated jokes failing to match human-created humor. As many humor prediction datasets claim to aid in generative tasks, we examine whether these claims are true. We focus our experiments on the most popular dataset, included in the 2020 SemEval{'}s Task 7, and teach our model to take normal text and {``}translate{''} it into humorous text. We evaluate our model compared to humorous human generated headlines, finding that our model is preferred equally in A/B testing with the human edited versions, a strong success for humor generation, and is preferred over an intelligent random baseline 72{\%} of the time. We also show that our model is assumed to be human written comparable with that of the human edited headlines and is significantly better than random, indicating that this dataset does indeed provide potential for future humor generation systems.
['Kevin Seppi', 'Nancy Fulda', 'Orion Weller']
2020-07-01
null
null
null
ws-2020-7
['headline-generation']
['natural-language-processing']
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[8.903158187866211, 11.050493240356445]
02fce129-a068-44da-b974-4c3e1aea0d22
synpaflex-corpus-an-expressive-french
null
null
https://aclanthology.org/L18-1677
https://aclanthology.org/L18-1677.pdf
SynPaFlex-Corpus: An Expressive French Audiobooks Corpus dedicated to expressive speech synthesis.
null
["{\\'E}lisabeth Delais-Roussarie", 'Ga{\\"e}lle Vidal', 'Damien Lolive', 'Marie Tahon', 'Aghilas Sini']
2018-05-01
synpaflex-corpus-an-expressive-french-1
https://aclanthology.org/L18-1677
https://aclanthology.org/L18-1677.pdf
lrec-2018-5
['expressive-speech-synthesis']
['speech']
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[-7.1972150802612305, 3.8151073455810547]
d4b086ed-282c-4d7c-aec2-6a87b5312cd5
big-data-science-in-porous-materials
2001.06728
null
https://arxiv.org/abs/2001.06728v3
https://arxiv.org/pdf/2001.06728v3.pdf
Big-Data Science in Porous Materials: Materials Genomics and Machine Learning
By combining metal nodes with organic linkers we can potentially synthesize millions of possible metal organic frameworks (MOFs). At present, we have libraries of over ten thousand synthesized materials and millions of in-silico predicted materials. The fact that we have so many materials opens many exciting avenues to tailor make a material that is optimal for a given application. However, from an experimental and computational point of view we simply have too many materials to screen using brute-force techniques. In this review, we show that having so many materials allows us to use big-data methods as a powerful technique to study these materials and to discover complex correlations. The first part of the review gives an introduction to the principles of big-data science. We emphasize the importance of data collection, methods to augment small data sets, how to select appropriate training sets. An important part of this review are the different approaches that are used to represent these materials in feature space. The review also includes a general overview of the different ML techniques, but as most applications in porous materials use supervised ML our review is focused on the different approaches for supervised ML. In particular, we review the different method to optimize the ML process and how to quantify the performance of the different methods. In the second part, we review how the different approaches of ML have been applied to porous materials. In particular, we discuss applications in the field of gas storage and separation, the stability of these materials, their electronic properties, and their synthesis. The range of topics illustrates the large variety of topics that can be studied with big-data science. Given the increasing interest of the scientific community in ML, we expect this list to rapidly expand in the coming years.
['Kevin Maik Jablonka', 'Daniele Ongari', 'Seyed Mohamad Moosavi', 'Berend Smit']
2020-01-18
null
null
null
null
['small-data']
['computer-vision']
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[5.1634392738342285, 5.427289962768555]
9e8a0003-4c6f-4c4c-b43c-4cb885e96499
a-novel-time-varying-spectral-filtering
null
null
https://doi.org/10.3390/s16010010
https://www.mdpi.com/1424-8220/16/1/10/pdf
A Novel Time-Varying Spectral Filtering Algorithm for Reconstruction of Motion Artifact Corrupted Heart Rate Signals During Intense Physical Activities Using a Wearable Photoplethysmogram Sensor
Accurate estimation of heart rates from photoplethysmogram (PPG) signals during intense physical activity is a very challenging problem. This is because strenuous and high intensity exercise can result in severe motion artifacts in PPG signals, making accurate heart rate (HR) estimation difficult. In this study we investigated a novel technique to accurately reconstruct motion-corrupted PPG signals and HR based on time-varying spectral analysis. The algorithm is called Spectral filter algorithm for Motion Artifacts and heart rate reconstruction (SpaMA). The idea is to calculate the power spectral density of both PPG and accelerometer signals for each time shift of a windowed data segment. By comparing time-varying spectra of PPG and accelerometer data, those frequency peaks resulting from motion artifacts can be distinguished from the PPG spectrum. The SpaMA approach was applied to three different datasets and four types of activities: (1) training datasets from the 2015 IEEE Signal Process. Cup Database recorded from 12 subjects while performing treadmill exercise from 1 km/h to 15 km/h; (2) test datasets from the 2015 IEEE Signal Process. Cup Database recorded from 11 subjects while performing forearm and upper arm exercise. (3) Chon Lab dataset including 10 min recordings from 10 subjects during treadmill exercise. The ECG signals from all three datasets provided the reference HRs which were used to determine the accuracy of our SpaMA algorithm. The performance of the SpaMA approach was calculated by computing the mean absolute error between the estimated HR from the PPG and the reference HR from the ECG. The average estimation errors using our method on the first, second and third datasets are 0.89, 1.93 and 1.38 beats/min respectively, while the overall error on all 33 subjects is 1.86 beats/min and the performance on only treadmill experiment datasets (22 subjects) is 1.11 beats/min. Moreover, it was found that dynamics of heart rate variability can be accurately captured using the algorithm where the mean Pearson’s correlation coefficient between the power spectral densities of the reference and the reconstructed heart rate time series was found to be 0.98. These results show that the SpaMA method has a potential for PPG-based HR monitoring in wearable devices for fitness tracking and health monitoring during intense physical activities.
['Chae Cho', 'Seyed M. A. Salehizadeh', 'Duy Dao', 'Yitzhak Mendelson and Ki H. Chon', 'Jeffrey Bolkhovsky']
2015-12-23
null
null
null
sensors-2015-12
['photoplethysmography-ppg', 'heart-rate-variability', 'heart-rate-estimation']
['medical', 'medical', 'medical']
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[13.949774742126465, 3.001685380935669]
301aa8b9-0b04-48bf-bc28-01d5115f9e6f
kgpt-knowledge-grounded-pre-training-for-data
2010.02307
null
https://arxiv.org/abs/2010.02307v2
https://arxiv.org/pdf/2010.02307v2.pdf
KGPT: Knowledge-Grounded Pre-Training for Data-to-Text Generation
Data-to-text generation has recently attracted substantial interests due to its wide applications. Existing methods have shown impressive performance on an array of tasks. However, they rely on a significant amount of labeled data for each task, which is costly to acquire and thus limits their application to new tasks and domains. In this paper, we propose to leverage pre-training and transfer learning to address this issue. We propose a knowledge-grounded pre-training (KGPT), which consists of two parts, 1) a general knowledge-grounded generation model to generate knowledge-enriched text. 2) a pre-training paradigm on a massive knowledge-grounded text corpus crawled from the web. The pre-trained model can be fine-tuned on various data-to-text generation tasks to generate task-specific text. We adopt three settings, namely fully-supervised, zero-shot, few-shot to evaluate its effectiveness. Under the fully-supervised setting, our model can achieve remarkable gains over the known baselines. Under zero-shot setting, our model without seeing any examples achieves over 30 ROUGE-L on WebNLG while all other baselines fail. Under the few-shot setting, our model only needs about one-fifteenth as many labeled examples to achieve the same level of performance as baseline models. These experiments consistently prove the strong generalization ability of our proposed framework https://github.com/wenhuchen/KGPT.
['William Yang Wang', 'Xifeng Yan', 'Yu Su', 'Wenhu Chen']
2020-10-05
null
https://aclanthology.org/2020.emnlp-main.697
https://aclanthology.org/2020.emnlp-main.697.pdf
emnlp-2020-11
['kg-to-text']
['natural-language-processing']
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[11.72624683380127, 8.795275688171387]
540b3440-668e-42d2-b8e2-58b0ceffe2d0
my-view-is-the-best-view-procedure-learning
2207.10883
null
https://arxiv.org/abs/2207.10883v1
https://arxiv.org/pdf/2207.10883v1.pdf
My View is the Best View: Procedure Learning from Egocentric Videos
Procedure learning involves identifying the key-steps and determining their logical order to perform a task. Existing approaches commonly use third-person videos for learning the procedure, making the manipulated object small in appearance and often occluded by the actor, leading to significant errors. In contrast, we observe that videos obtained from first-person (egocentric) wearable cameras provide an unobstructed and clear view of the action. However, procedure learning from egocentric videos is challenging because (a) the camera view undergoes extreme changes due to the wearer's head motion, and (b) the presence of unrelated frames due to the unconstrained nature of the videos. Due to this, current state-of-the-art methods' assumptions that the actions occur at approximately the same time and are of the same duration, do not hold. Instead, we propose to use the signal provided by the temporal correspondences between key-steps across videos. To this end, we present a novel self-supervised Correspond and Cut (CnC) framework for procedure learning. CnC identifies and utilizes the temporal correspondences between the key-steps across multiple videos to learn the procedure. Our experiments show that CnC outperforms the state-of-the-art on the benchmark ProceL and CrossTask datasets by 5.2% and 6.3%, respectively. Furthermore, for procedure learning using egocentric videos, we propose the EgoProceL dataset consisting of 62 hours of videos captured by 130 subjects performing 16 tasks. The source code and the dataset are available on the project page https://sid2697.github.io/egoprocel/.
['C. V. Jawahar', 'Chetan Arora', 'Siddhant Bansal']
2022-07-22
null
null
null
null
['procedure-learning']
['computer-vision']
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[8.197724342346191, 0.3357035517692566]
71032492-1eba-4d37-9292-46bd7ec1eac7
a-generative-flow-for-conditional-sampling
2307.04102
null
https://arxiv.org/abs/2307.04102v1
https://arxiv.org/pdf/2307.04102v1.pdf
A generative flow for conditional sampling via optimal transport
Sampling conditional distributions is a fundamental task for Bayesian inference and density estimation. Generative models, such as normalizing flows and generative adversarial networks, characterize conditional distributions by learning a transport map that pushes forward a simple reference (e.g., a standard Gaussian) to a target distribution. While these approaches successfully describe many non-Gaussian problems, their performance is often limited by parametric bias and the reliability of gradient-based (adversarial) optimizers to learn these transformations. This work proposes a non-parametric generative model that iteratively maps reference samples to the target. The model uses block-triangular transport maps, whose components are shown to characterize conditionals of the target distribution. These maps arise from solving an optimal transport problem with a weighted $L^2$ cost function, thereby extending the data-driven approach in [Trigila and Tabak, 2016] for conditional sampling. The proposed approach is demonstrated on a two dimensional example and on a parameter inference problem involving nonlinear ODEs.
['Ryan Tsai', 'Giulio Trigila', 'Josef Sajonz', 'Daniel Pocklington', 'Isa Lyubimova', 'Alfin Hou', 'Noam Gal', 'Anupam Bhakta', 'Ricardo Baptista', 'Jason Alfonso']
2023-07-09
null
null
null
null
['bayesian-inference', 'density-estimation']
['methodology', 'methodology']
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[6.866064071655273, 3.823768377304077]
944e2504-c8d7-49b3-9254-8b77a2a7fc91
no-shifted-augmentations-nsa-compact
2203.10344
null
https://arxiv.org/abs/2203.10344v1
https://arxiv.org/pdf/2203.10344v1.pdf
No Shifted Augmentations (NSA): compact distributions for robust self-supervised Anomaly Detection
Unsupervised Anomaly detection (AD) requires building a notion of normalcy, distinguishing in-distribution (ID) and out-of-distribution (OOD) data, using only available ID samples. Recently, large gains were made on this task for the domain of natural images using self-supervised contrastive feature learning as a first step followed by kNN or traditional one-class classifiers for feature scoring. Learned representations that are non-uniformly distributed on the unit hypersphere have been shown to be beneficial for this task. We go a step further and investigate how the \emph {geometrical compactness} of the ID feature distribution makes isolating and detecting outliers easier, especially in the realistic situation when ID training data is polluted (i.e. ID data contains some OOD data that is used for learning the feature extractor parameters). We propose novel architectural modifications to the self-supervised feature learning step, that enable such compact distributions for ID data to be learned. We show that the proposed modifications can be effectively applied to most existing self-supervised objectives, with large gains in performance. Furthermore, this improved OOD performance is obtained without resorting to tricks such as using strongly augmented ID images (e.g. by 90 degree rotations) as proxies for the unseen OOD data, as these impose overly prescriptive assumptions about ID data and its invariances. We perform extensive studies on benchmark datasets for one-class OOD detection and show state-of-the-art performance in the presence of pollution in the ID data, and comparable performance otherwise. We also propose and extensively evaluate a novel feature scoring technique based on the angular Mahalanobis distance, and propose a simple and novel technique for feature ensembling during evaluation that enables a big boost in performance at nearly zero run-time cost.
['Tom Bishop', 'Unmesh Kurup', 'Marcel Ackermann', 'Mohamed Yousef']
2022-03-19
null
null
null
null
['self-supervised-anomaly-detection', 'supervised-anomaly-detection']
['computer-vision', 'computer-vision']
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[7.701941013336182, 2.4318180084228516]
ed068b42-8c15-4f37-97e0-4050630497cf
auto-lambda-disentangling-dynamic-task
2202.03091
null
https://arxiv.org/abs/2202.03091v2
https://arxiv.org/pdf/2202.03091v2.pdf
Auto-Lambda: Disentangling Dynamic Task Relationships
Understanding the structure of multiple related tasks allows for multi-task learning to improve the generalisation ability of one or all of them. However, it usually requires training each pairwise combination of tasks together in order to capture task relationships, at an extremely high computational cost. In this work, we learn task relationships via an automated weighting framework, named Auto-Lambda. Unlike previous methods where task relationships are assumed to be fixed, Auto-Lambda is a gradient-based meta learning framework which explores continuous, dynamic task relationships via task-specific weightings, and can optimise any choice of combination of tasks through the formulation of a meta-loss; where the validation loss automatically influences task weightings throughout training. We apply the proposed framework to both multi-task and auxiliary learning problems in computer vision and robotics, and show that Auto-Lambda achieves state-of-the-art performance, even when compared to optimisation strategies designed specifically for each problem and data domain. Finally, we observe that Auto-Lambda can discover interesting learning behaviors, leading to new insights in multi-task learning. Code is available at https://github.com/lorenmt/auto-lambda.
['Edward Johns', 'Andrew J. Davison', 'Stephen James', 'Shikun Liu']
2022-02-07
null
null
null
null
['auxiliary-learning']
['methodology']
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[9.284388542175293, 3.75567626953125]
fbcaacfb-41ff-4612-abe0-ee7be79fe345
aop-net-all-in-one-perception-network-for
2302.00885
null
https://arxiv.org/abs/2302.00885v1
https://arxiv.org/pdf/2302.00885v1.pdf
AOP-Net: All-in-One Perception Network for Joint LiDAR-based 3D Object Detection and Panoptic Segmentation
LiDAR-based 3D object detection and panoptic segmentation are two crucial tasks in the perception systems of autonomous vehicles and robots. In this paper, we propose All-in-One Perception Network (AOP-Net), a LiDAR-based multi-task framework that combines 3D object detection and panoptic segmentation. In this method, a dual-task 3D backbone is developed to extract both panoptic- and detection-level features from the input LiDAR point cloud. Also, a new 2D backbone that intertwines Multi-Layer Perceptron (MLP) and convolution layers is designed to further improve the detection task performance. Finally, a novel module is proposed to guide the detection head by recovering useful features discarded during down-sampling operations in the 3D backbone. This module leverages estimated instance segmentation masks to recover detailed information from each candidate object. The AOP-Net achieves state-of-the-art performance for published works on the nuScenes benchmark for both 3D object detection and panoptic segmentation tasks. Also, experiments show that our method easily adapts to and significantly improves the performance of any BEV-based 3D object detection method.
['Bingbing Liu', 'Yuan Ren', 'Hamidreza Fazlali', 'YiXuan Xu']
2023-02-02
null
null
null
null
['panoptic-segmentation']
['computer-vision']
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[7.91614294052124, -2.7033028602600098]
d5efc299-2207-4065-a554-91246801dd55
the-effects-of-hofstede-s-cultural-dimensions
2301.04609
null
https://arxiv.org/abs/2301.04609v1
https://arxiv.org/pdf/2301.04609v1.pdf
The Effects of Hofstede's Cultural Dimensions on Pro-Environmental Behaviour: How Culture Influences Environmentally Conscious Behaviour
The need for a more sustainable lifestyle is a key focus for several countries. Using a questionnaire survey conducted in Hungary, this paper examines how culture influences environmentally conscious behaviour. Having investigated the direct impact of Hofstedes cultural dimensions on pro-environmental behaviour, we found that the culture of a country hardly affects actual environmentally conscious behaviour. The findings indicate that only individualism and power distance have a significant but weak negative impact on pro-environmental behaviour. Based on the findings, we can state that a positive change in culture is a necessary but not sufficient condition for making a country greener.
['Csilla Konyha Molnarne', 'Szabolcs Nagy']
2022-12-26
null
null
null
null
['culture']
['speech']
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[9.062433242797852, 6.267648220062256]
8a91d992-dbe9-4388-aedb-4eb98d04f6b5
why-discard-if-you-can-recycle-a-recycling
null
null
http://openaccess.thecvf.com//content/CVPR2022/html/Chen_Why_Discard_if_You_Can_Recycle_A_Recycling_Max_Pooling_CVPR_2022_paper.html
http://openaccess.thecvf.com//content/CVPR2022/papers/Chen_Why_Discard_if_You_Can_Recycle_A_Recycling_Max_Pooling_CVPR_2022_paper.pdf
Why Discard if You Can Recycle?: A Recycling Max Pooling Module for 3D Point Cloud Analysis
In recent years, most 3D point cloud analysis models have focused on developing either new network architectures or more efficient modules for aggregating point features from a local neighborhood. Regardless of the network architecture or the methodology used for improved feature learning, these models share one thing, which is the use of max-pooling in the end to obtain permutation invariant features. We first show that this traditional approach causes only a fraction of 3D points contribute to the permutation invariant features, and discards the rest of the points. In order to address this issue and improve the performance of any baseline 3D point classification or segmentation model, we propose a new module, referred to as the Recycling MaxPooling (RMP) module, to recycle and utilize the features of some of the discarded points. We incorporate a refinement loss that uses the recycled features to refine the prediction loss obtained from the features kept by traditional max-pooling. To the best of our knowledge, this is the first work that explores recycling of still useful points that are traditionally discarded by max-pooling. We demonstrate the effectiveness of the proposed RMP module by incorporating it into several milestone baselines and state-of-the-art networks for point cloud classification and indoor semantic segmentation tasks. We show that RPM, without any bells and whistles, consistently improves the performance of all the tested networks by using the same base network implementation and hyper-parameters. The code is provided in the supplementary material.
['Senem Velipasalar', 'Huantao Ren', 'Burak Kakillioglu', 'Jiajing Chen']
2022-01-01
null
null
null
cvpr-2022-1
['point-cloud-classification']
['computer-vision']
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[7.945199012756348, -3.4321563243865967]
95722c57-956b-42d3-9181-97108a571c27
multi-frames-temporal-abnormal-clues-learning
2208.04076
null
https://arxiv.org/abs/2208.04076v1
https://arxiv.org/pdf/2208.04076v1.pdf
Multi-Frames Temporal Abnormal Clues Learning Method for Face Anti-Spoofing
Face anti-spoofing researches are widely used in face recognition and has received more attention from industry and academics. In this paper, we propose the EulerNet, a new temporal feature fusion network in which the differential filter and residual pyramid are used to extract and amplify abnormal clues from continuous frames, respectively. A lightweight sample labeling method based on face landmarks is designed to label large-scale samples at a lower cost and has better results than other methods such as 3D camera. Finally, we collect 30,000 live and spoofing samples using various mobile ends to create a dataset that replicates various forms of attacks in a real-world setting. Extensive experiments on public OULU-NPU show that our algorithm is superior to the state of art and our solution has already been deployed in real-world systems servicing millions of users.
['Jin Gao', 'Jiarong He', 'Rongyu Zhang', 'Heng Cong']
2022-08-08
null
null
null
null
['face-anti-spoofing']
['computer-vision']
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[13.006760597229004, 1.170379877090454]
ee3d3a1a-b165-4427-813c-1d918f2f9cb8
exploiting-expert-guided-symmetry-detection
2112.09943
null
https://arxiv.org/abs/2112.09943v3
https://arxiv.org/pdf/2112.09943v3.pdf
Data Augmentation through Expert-guided Symmetry Detection to Improve Performance in Offline Reinforcement Learning
Offline estimation of the dynamical model of a Markov Decision Process (MDP) is a non-trivial task that greatly depends on the data available in the learning phase. Sometimes the dynamics of the model is invariant with respect to some transformations of the current state and action. Recent works showed that an expert-guided pipeline relying on Density Estimation methods as Deep Neural Network based Normalizing Flows effectively detects this structure in deterministic environments, both categorical and continuous-valued. The acquired knowledge can be exploited to augment the original data set, leading eventually to a reduction in the distributional shift between the true and the learned model. Such data augmentation technique can be exploited as a preliminary process to be executed before adopting an Offline Reinforcement Learning architecture, increasing its performance. In this work we extend the paradigm to also tackle non-deterministic MDPs, in particular, 1) we propose a detection threshold in categorical environments based on statistical distances, and 2) we show that the former results lead to a performance improvement when solving the learned MDP and then applying the optimized policy in the real environment.
['Caroline P. C. Chanel', 'Nicolas Drougard', 'Giorgio Angelotti']
2021-12-18
null
null
null
null
['symmetry-detection']
['computer-vision']
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