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100
Monitoring Term Drift Based on Semantic Consistency in an Evolving Vector Field
cs.CL
Based on the Aristotelian concept of potentiality vs. actuality allowing for the study of energy and dynamics in language, we propose a field approach to lexical analysis. Falling back on the distributional hypothesis to statistically model word meaning, we used evolving fields as a metaphor to express time-dependent c...
computer science
101
Towards better decoding and language model integration in sequence to sequence models
cs.NE
The recently proposed Sequence-to-Sequence (seq2seq) framework advocates replacing complex data processing pipelines, such as an entire automatic speech recognition system, with a single neural network trained in an end-to-end fashion. In this contribution, we analyse an attention-based seq2seq speech recognition syste...
computer science
102
Neural Machine Translation by Jointly Learning to Align and Translate
cs.CL
Neural machine translation is a recently proposed approach to machine translation. Unlike the traditional statistical machine translation, the neural machine translation aims at building a single neural network that can be jointly tuned to maximize the translation performance. The models proposed recently for neural ma...
computer science
103
Overcoming the Curse of Sentence Length for Neural Machine Translation using Automatic Segmentation
cs.CL
The authors of (Cho et al., 2014a) have shown that the recently introduced neural network translation systems suffer from a significant drop in translation quality when translating long sentences, unlike existing phrase-based translation systems. In this paper, we propose a way to address this issue by automatically se...
computer science
104
Transferring Knowledge from a RNN to a DNN
cs.LG
Deep Neural Network (DNN) acoustic models have yielded many state-of-the-art results in Automatic Speech Recognition (ASR) tasks. More recently, Recurrent Neural Network (RNN) models have been shown to outperform DNNs counterparts. However, state-of-the-art DNN and RNN models tend to be impractical to deploy on embedde...
computer science
105
Correlational Neural Networks
cs.CL
Common Representation Learning (CRL), wherein different descriptions (or views) of the data are embedded in a common subspace, is receiving a lot of attention recently. Two popular paradigms here are Canonical Correlation Analysis (CCA) based approaches and Autoencoder (AE) based approaches. CCA based approaches learn ...
computer science
106
Attention-Based Models for Speech Recognition
cs.CL
Recurrent sequence generators conditioned on input data through an attention mechanism have recently shown very good performance on a range of tasks in- cluding machine translation, handwriting synthesis and image caption gen- eration. We extend the attention-mechanism with features needed for speech recognition. We sh...
computer science
107
Fast and Accurate Recurrent Neural Network Acoustic Models for Speech Recognition
cs.CL
We have recently shown that deep Long Short-Term Memory (LSTM) recurrent neural networks (RNNs) outperform feed forward deep neural networks (DNNs) as acoustic models for speech recognition. More recently, we have shown that the performance of sequence trained context dependent (CD) hidden Markov model (HMM) acoustic m...
computer science
108
Listen, Attend and Spell
cs.CL
We present Listen, Attend and Spell (LAS), a neural network that learns to transcribe speech utterances to characters. Unlike traditional DNN-HMM models, this model learns all the components of a speech recognizer jointly. Our system has two components: a listener and a speller. The listener is a pyramidal recurrent ne...
computer science
109
BlackOut: Speeding up Recurrent Neural Network Language Models With Very Large Vocabularies
cs.LG
We propose BlackOut, an approximation algorithm to efficiently train massive recurrent neural network language models (RNNLMs) with million word vocabularies. BlackOut is motivated by using a discriminative loss, and we describe a new sampling strategy which significantly reduces computation while improving stability, ...
computer science
110
Character-based Neural Machine Translation
cs.CL
Neural Machine Translation (MT) has reached state-of-the-art results. However, one of the main challenges that neural MT still faces is dealing with very large vocabularies and morphologically rich languages. In this paper, we propose a neural MT system using character-based embeddings in combination with convolutional...
computer science
111
A Latent Variable Recurrent Neural Network for Discourse Relation Language Models
cs.CL
This paper presents a novel latent variable recurrent neural network architecture for jointly modeling sequences of words and (possibly latent) discourse relations between adjacent sentences. A recurrent neural network generates individual words, thus reaping the benefits of discriminatively-trained vector representati...
computer science
112
Multi-task Recurrent Model for Speech and Speaker Recognition
cs.CL
Although highly correlated, speech and speaker recognition have been regarded as two independent tasks and studied by two communities. This is certainly not the way that people behave: we decipher both speech content and speaker traits at the same time. This paper presents a unified model to perform speech and speaker ...
computer science
113
Hierarchical Memory Networks
stat.ML
Memory networks are neural networks with an explicit memory component that can be both read and written to by the network. The memory is often addressed in a soft way using a softmax function, making end-to-end training with backpropagation possible. However, this is not computationally scalable for applications which ...
computer science
114
Sequence-to-Sequence Learning as Beam-Search Optimization
cs.CL
Sequence-to-Sequence (seq2seq) modeling has rapidly become an important general-purpose NLP tool that has proven effective for many text-generation and sequence-labeling tasks. Seq2seq builds on deep neural language modeling and inherits its remarkable accuracy in estimating local, next-word distributions. In this work...
computer science
115
Grounded Recurrent Neural Networks
stat.ML
In this work, we present the Grounded Recurrent Neural Network (GRNN), a recurrent neural network architecture for multi-label prediction which explicitly ties labels to specific dimensions of the recurrent hidden state (we call this process "grounding"). The approach is particularly well-suited for extracting large nu...
computer science
116
Latent Intention Dialogue Models
cs.CL
Developing a dialogue agent that is capable of making autonomous decisions and communicating by natural language is one of the long-term goals of machine learning research. Traditional approaches either rely on hand-crafting a small state-action set for applying reinforcement learning that is not scalable or constructi...
computer science
117
Transfer Learning for Speech Recognition on a Budget
cs.LG
End-to-end training of automated speech recognition (ASR) systems requires massive data and compute resources. We explore transfer learning based on model adaptation as an approach for training ASR models under constrained GPU memory, throughput and training data. We conduct several systematic experiments adapting a Wa...
computer science
118
Optimizing expected word error rate via sampling for speech recognition
cs.CL
State-level minimum Bayes risk (sMBR) training has become the de facto standard for sequence-level training of speech recognition acoustic models. It has an elegant formulation using the expectation semiring, and gives large improvements in word error rate (WER) over models trained solely using cross-entropy (CE) or co...
computer science
119
Neural Networks Compression for Language Modeling
stat.ML
In this paper, we consider several compression techniques for the language modeling problem based on recurrent neural networks (RNNs). It is known that conventional RNNs, e.g, LSTM-based networks in language modeling, are characterized with either high space complexity or substantial inference time. This problem is esp...
computer science
120
Avoiding Your Teacher's Mistakes: Training Neural Networks with Controlled Weak Supervision
cs.LG
Training deep neural networks requires massive amounts of training data, but for many tasks only limited labeled data is available. This makes weak supervision attractive, using weak or noisy signals like the output of heuristic methods or user click-through data for training. In a semi-supervised setting, we can use a...
computer science
121
Uncertainty Estimates for Efficient Neural Network-based Dialogue Policy Optimisation
stat.ML
In statistical dialogue management, the dialogue manager learns a policy that maps a belief state to an action for the system to perform. Efficient exploration is key to successful policy optimisation. Current deep reinforcement learning methods are very promising but rely on epsilon-greedy exploration, thus subjecting...
computer science
122
On Extended Long Short-term Memory and Dependent Bidirectional Recurrent Neural Network
cs.LG
In this work, we investigate the memory capability of recurrent neural networks (RNNs), where this capability is defined as a function that maps an element in a sequence to the current output. We first analyze the system function of a recurrent neural network (RNN) cell, and provide analytical results for three RNNs. T...
computer science
123
Learning to Answer Questions From Image Using Convolutional Neural Network
cs.CL
In this paper, we propose to employ the convolutional neural network (CNN) for the image question answering (QA). Our proposed CNN provides an end-to-end framework with convolutional architectures for learning not only the image and question representations, but also their inter-modal interactions to produce the answer...
computer science
124
Stacked Attention Networks for Image Question Answering
cs.LG
This paper presents stacked attention networks (SANs) that learn to answer natural language questions from images. SANs use semantic representation of a question as query to search for the regions in an image that are related to the answer. We argue that image question answering (QA) often requires multiple steps of re...
computer science
125
Neural Module Networks
cs.CV
Visual question answering is fundamentally compositional in nature---a question like "where is the dog?" shares substructure with questions like "what color is the dog?" and "where is the cat?" This paper seeks to simultaneously exploit the representational capacity of deep networks and the compositional linguistic str...
computer science
126
Symbol Grounding Association in Multimodal Sequences with Missing Elements
cs.CV
In this paper, we extend a symbolic association framework for being able to handle missing elements in multimodal sequences. The general scope of the work is the symbolic associations of object-word mappings as it happens in language development in infants. In other words, two different representations of the same abst...
computer science
127
Using Trusted Data to Train Deep Networks on Labels Corrupted by Severe Noise
cs.LG
The growing importance of massive datasets with the advent of deep learning makes robustness to label noise a critical property for classifiers to have. Sources of label noise include automatic labeling for large datasets, non-expert labeling, and label corruption by data poisoning adversaries. In the latter case, corr...
computer science
128
Describing Multimedia Content using Attention-based Encoder--Decoder Networks
cs.NE
Whereas deep neural networks were first mostly used for classification tasks, they are rapidly expanding in the realm of structured output problems, where the observed target is composed of multiple random variables that have a rich joint distribution, given the input. We focus in this paper on the case where the input...
computer science
129
Multilingual Image Description with Neural Sequence Models
cs.CL
In this paper we present an approach to multi-language image description bringing together insights from neural machine translation and neural image description. To create a description of an image for a given target language, our sequence generation models condition on feature vectors from the image, the description f...
computer science
130
Deep Embedding for Spatial Role Labeling
cs.CL
This paper introduces the visually informed embedding of word (VIEW), a continuous vector representation for a word extracted from a deep neural model trained using the Microsoft COCO data set to forecast the spatial arrangements between visual objects, given a textual description. The model is composed of a deep multi...
computer science
131
Image-to-Markup Generation with Coarse-to-Fine Attention
cs.CV
We present a neural encoder-decoder model to convert images into presentational markup based on a scalable coarse-to-fine attention mechanism. Our method is evaluated in the context of image-to-LaTeX generation, and we introduce a new dataset of real-world rendered mathematical expressions paired with LaTeX markup. We ...
computer science
132
Teaching Machines to Code: Neural Markup Generation with Visual Attention
cs.LG
We present a deep recurrent neural network model with soft visual attention that learns to generate LaTeX markup of real-world math formulas given their images. Applying neural sequence generation techniques that have been very successful in the fields of machine translation and image/handwriting/speech captioning, rec...
computer science
133
Evolution in Groups: A deeper look at synaptic cluster driven evolution of deep neural networks
cs.NE
A promising paradigm for achieving highly efficient deep neural networks is the idea of evolutionary deep intelligence, which mimics biological evolution processes to progressively synthesize more efficient networks. A crucial design factor in evolutionary deep intelligence is the genetic encoding scheme used to simula...
computer science
134
Mesh Learning for Classifying Cognitive Processes
cs.NE
A relatively recent advance in cognitive neuroscience has been multi-voxel pattern analysis (MVPA), which enables researchers to decode brain states and/or the type of information represented in the brain during a cognitive operation. MVPA methods utilize machine learning algorithms to distinguish among types of inform...
computer science
135
Synthesizing Deep Neural Network Architectures using Biological Synaptic Strength Distributions
cs.NE
In this work, we perform an exploratory study on synthesizing deep neural networks using biological synaptic strength distributions, and the potential influence of different distributions on modelling performance particularly for the scenario associated with small data sets. Surprisingly, a CNN with convolutional layer...
computer science
136
A PSO and Pattern Search based Memetic Algorithm for SVMs Parameters Optimization
cs.LG
Addressing the issue of SVMs parameters optimization, this study proposes an efficient memetic algorithm based on Particle Swarm Optimization algorithm (PSO) and Pattern Search (PS). In the proposed memetic algorithm, PSO is responsible for exploration of the search space and the detection of the potential regions with...
computer science
137
Density estimation using Real NVP
cs.LG
Unsupervised learning of probabilistic models is a central yet challenging problem in machine learning. Specifically, designing models with tractable learning, sampling, inference and evaluation is crucial in solving this task. We extend the space of such models using real-valued non-volume preserving (real NVP) transf...
computer science
138
Evolution Strategies as a Scalable Alternative to Reinforcement Learning
stat.ML
We explore the use of Evolution Strategies (ES), a class of black box optimization algorithms, as an alternative to popular MDP-based RL techniques such as Q-learning and Policy Gradients. Experiments on MuJoCo and Atari show that ES is a viable solution strategy that scales extremely well with the number of CPUs avail...
computer science
139
QMDP-Net: Deep Learning for Planning under Partial Observability
cs.AI
This paper introduces the QMDP-net, a neural network architecture for planning under partial observability. The QMDP-net combines the strengths of model-free learning and model-based planning. It is a recurrent policy network, but it represents a policy for a parameterized set of tasks by connecting a model with a plan...
computer science
140
TreeQN and ATreeC: Differentiable Tree-Structured Models for Deep Reinforcement Learning
cs.AI
Combining deep model-free reinforcement learning with on-line planning is a promising approach to building on the successes of deep RL. On-line planning with look-ahead trees has proven successful in environments where transition models are known a priori. However, in complex environments where transition models need t...
computer science
141
Sparse Attentive Backtracking: Long-Range Credit Assignment in Recurrent Networks
cs.AI
A major drawback of backpropagation through time (BPTT) is the difficulty of learning long-term dependencies, coming from having to propagate credit information backwards through every single step of the forward computation. This makes BPTT both computationally impractical and biologically implausible. For this reason,...
computer science
142
Stochastic Deep Learning in Memristive Networks
stat.ML
We study the performance of stochastically trained deep neural networks (DNNs) whose synaptic weights are implemented using emerging memristive devices that exhibit limited dynamic range, resolution, and variability in their programming characteristics. We show that a key device parameter to optimize the learning effic...
computer science
143
PSO-MISMO Modeling Strategy for Multi-Step-Ahead Time Series Prediction
cs.AI
Multi-step-ahead time series prediction is one of the most challenging research topics in the field of time series modeling and prediction, and is continually under research. Recently, the multiple-input several multiple-outputs (MISMO) modeling strategy has been proposed as a promising alternative for multi-step-ahead...
computer science
144
Norm-Based Capacity Control in Neural Networks
cs.LG
We investigate the capacity, convexity and characterization of a general family of norm-constrained feed-forward networks.
computer science
145
Improving the Performance of Neural Networks in Regression Tasks Using Drawering
cs.LG
The method presented extends a given regression neural network to make its performance improve. The modification affects the learning procedure only, hence the extension may be easily omitted during evaluation without any change in prediction. It means that the modified model may be evaluated as quickly as the original...
computer science
146
Learning unbiased features
cs.LG
A key element in transfer learning is representation learning; if representations can be developed that expose the relevant factors underlying the data, then new tasks and domains can be learned readily based on mappings of these salient factors. We propose that an important aim for these representations are to be unbi...
computer science
147
Compatible Value Gradients for Reinforcement Learning of Continuous Deep Policies
cs.LG
This paper proposes GProp, a deep reinforcement learning algorithm for continuous policies with compatible function approximation. The algorithm is based on two innovations. Firstly, we present a temporal-difference based method for learning the gradient of the value-function. Secondly, we present the deviator-actor-cr...
computer science
148
Learning dynamic Boltzmann machines with spike-timing dependent plasticity
cs.NE
We propose a particularly structured Boltzmann machine, which we refer to as a dynamic Boltzmann machine (DyBM), as a stochastic model of a multi-dimensional time-series. The DyBM can have infinitely many layers of units but allows exact and efficient inference and learning when its parameters have a proposed structure...
computer science
149
Gated Graph Sequence Neural Networks
cs.LG
Graph-structured data appears frequently in domains including chemistry, natural language semantics, social networks, and knowledge bases. In this work, we study feature learning techniques for graph-structured inputs. Our starting point is previous work on Graph Neural Networks (Scarselli et al., 2009), which we modif...
computer science
150
Deep Reinforcement Learning in Large Discrete Action Spaces
cs.AI
Being able to reason in an environment with a large number of discrete actions is essential to bringing reinforcement learning to a larger class of problems. Recommender systems, industrial plants and language models are only some of the many real-world tasks involving large numbers of discrete actions for which curren...
computer science
151
Value Iteration Networks
cs.AI
We introduce the value iteration network (VIN): a fully differentiable neural network with a `planning module' embedded within. VINs can learn to plan, and are suitable for predicting outcomes that involve planning-based reasoning, such as policies for reinforcement learning. Key to our approach is a novel differentiab...
computer science
152
Recurrent Orthogonal Networks and Long-Memory Tasks
cs.NE
Although RNNs have been shown to be powerful tools for processing sequential data, finding architectures or optimization strategies that allow them to model very long term dependencies is still an active area of research. In this work, we carefully analyze two synthetic datasets originally outlined in (Hochreiter and S...
computer science
153
Learning values across many orders of magnitude
cs.LG
Most learning algorithms are not invariant to the scale of the function that is being approximated. We propose to adaptively normalize the targets used in learning. This is useful in value-based reinforcement learning, where the magnitude of appropriate value approximations can change over time when we update the polic...
computer science
154
Genetic Architect: Discovering Genomic Structure with Learned Neural Architectures
cs.LG
Each human genome is a 3 billion base pair set of encoding instructions. Decoding the genome using deep learning fundamentally differs from most tasks, as we do not know the full structure of the data and therefore cannot design architectures to suit it. As such, architectures that fit the structure of genomics should ...
computer science
155
Deep Successor Reinforcement Learning
stat.ML
Learning robust value functions given raw observations and rewards is now possible with model-free and model-based deep reinforcement learning algorithms. There is a third alternative, called Successor Representations (SR), which decomposes the value function into two components -- a reward predictor and a successor ma...
computer science
156
RL$^2$: Fast Reinforcement Learning via Slow Reinforcement Learning
cs.AI
Deep reinforcement learning (deep RL) has been successful in learning sophisticated behaviors automatically; however, the learning process requires a huge number of trials. In contrast, animals can learn new tasks in just a few trials, benefiting from their prior knowledge about the world. This paper seeks to bridge th...
computer science
157
Capacity and Trainability in Recurrent Neural Networks
stat.ML
Two potential bottlenecks on the expressiveness of recurrent neural networks (RNNs) are their ability to store information about the task in their parameters, and to store information about the input history in their units. We show experimentally that all common RNN architectures achieve nearly the same per-task and pe...
computer science
158
Causal Regularization
cs.LG
In application domains such as healthcare, we want accurate predictive models that are also causally interpretable. In pursuit of such models, we propose a causal regularizer to steer predictive models towards causally-interpretable solutions and theoretically study its properties. In a large-scale analysis of Electron...
computer science
159
On the Behavior of Convolutional Nets for Feature Extraction
cs.NE
Deep neural networks are representation learning techniques. During training, a deep net is capable of generating a descriptive language of unprecedented size and detail in machine learning. Extracting the descriptive language coded within a trained CNN model (in the case of image data), and reusing it for other purpos...
computer science
160
Flow-GAN: Combining Maximum Likelihood and Adversarial Learning in Generative Models
cs.LG
Adversarial learning of probabilistic models has recently emerged as a promising alternative to maximum likelihood. Implicit models such as generative adversarial networks (GAN) often generate better samples compared to explicit models trained by maximum likelihood. Yet, GANs sidestep the characterization of an explici...
computer science
161
Filtering Variational Objectives
cs.LG
When used as a surrogate objective for maximum likelihood estimation in latent variable models, the evidence lower bound (ELBO) produces state-of-the-art results. Inspired by this, we consider the extension of the ELBO to a family of lower bounds defined by a particle filter's estimator of the marginal likelihood, the ...
computer science
162
Kernel Implicit Variational Inference
stat.ML
Recent progress in variational inference has paid much attention to the flexibility of variational posteriors. One promising direction is to use implicit distributions, i.e., distributions without tractable densities as the variational posterior. However, existing methods on implicit posteriors still face challenges of...
computer science
163
Non-Markovian Control with Gated End-to-End Memory Policy Networks
stat.ML
Partially observable environments present an important open challenge in the domain of sequential control learning with delayed rewards. Despite numerous attempts during the two last decades, the majority of reinforcement learning algorithms and associated approximate models, applied to this context, still assume Marko...
computer science
164
Automated Problem Identification: Regression vs Classification via Evolutionary Deep Networks
cs.NE
Regression or classification? This is perhaps the most basic question faced when tackling a new supervised learning problem. We present an Evolutionary Deep Learning (EDL) algorithm that automatically solves this by identifying the question type with high accuracy, along with a proposed deep architecture. Typically, a ...
computer science
165
A Simple Neural Attentive Meta-Learner
cs.AI
Deep neural networks excel in regimes with large amounts of data, but tend to struggle when data is scarce or when they need to adapt quickly to changes in the task. In response, recent work in meta-learning proposes training a meta-learner on a distribution of similar tasks, in the hopes of generalization to novel but...
computer science
166
Kafnets: kernel-based non-parametric activation functions for neural networks
stat.ML
Neural networks are generally built by interleaving (adaptable) linear layers with (fixed) nonlinear activation functions. To increase their flexibility, several authors have proposed methods for adapting the activation functions themselves, endowing them with varying degrees of flexibility. None of these approaches, h...
computer science
167
Learning model-based planning from scratch
cs.AI
Conventional wisdom holds that model-based planning is a powerful approach to sequential decision-making. It is often very challenging in practice, however, because while a model can be used to evaluate a plan, it does not prescribe how to construct a plan. Here we introduce the "Imagination-based Planner", the first m...
computer science
168
Recurrent Ladder Networks
cs.NE
We propose a recurrent extension of the Ladder networks whose structure is motivated by the inference required in hierarchical latent variable models. We demonstrate that the recurrent Ladder is able to handle a wide variety of complex learning tasks that benefit from iterative inference and temporal modeling. The arch...
computer science
169
Generalization in Deep Learning
stat.ML
With a direct analysis of neural networks, this paper presents a mathematically tight generalization theory to partially address an open problem regarding the generalization of deep learning. Unlike previous bound-based theory, our main theory is quantitatively as tight as possible for every dataset individually, while...
computer science
170
Parametrizing filters of a CNN with a GAN
cs.LG
It is commonly agreed that the use of relevant invariances as a good statistical bias is important in machine-learning. However, most approaches that explicitly incorporate invariances into a model architecture only make use of very simple transformations, such as translations and rotations. Hence, there is a need for ...
computer science
171
Wider and Deeper, Cheaper and Faster: Tensorized LSTMs for Sequence Learning
stat.ML
Long Short-Term Memory (LSTM) is a popular approach to boosting the ability of Recurrent Neural Networks to store longer term temporal information. The capacity of an LSTM network can be increased by widening and adding layers. However, usually the former introduces additional parameters, while the latter increases the...
computer science
172
Learning and Real-time Classification of Hand-written Digits With Spiking Neural Networks
stat.ML
We describe a novel spiking neural network (SNN) for automated, real-time handwritten digit classification and its implementation on a GP-GPU platform. Information processing within the network, from feature extraction to classification is implemented by mimicking the basic aspects of neuronal spike initiation and prop...
computer science
173
Overcoming catastrophic forgetting with hard attention to the task
cs.LG
Catastrophic forgetting occurs when a neural network loses the information learned in a previous task after training on subsequent tasks. This problem remains a hurdle for artificial intelligence systems with sequential learning capabilities. In this paper, we propose a task-based hard attention mechanism that preserve...
computer science
174
Detecting and Correcting for Label Shift with Black Box Predictors
cs.LG
Faced with distribution shift between training and test set, we wish to detect and quantify the shift, and to correct our classifiers without test set labels. Motivated by medical diagnosis, where diseases (targets), cause symptoms (observations), we focus on label shift, where the label marginal $p(y)$ changes but the...
computer science
175
Generalization in Machine Learning via Analytical Learning Theory
stat.ML
This paper introduces a novel measure-theoretic learning theory to analyze generalization behaviors of practical interest. The proposed learning theory has the following abilities: 1) to utilize the qualities of each learned representation on the path from raw inputs to outputs in representation learning, 2) to guarant...
computer science
176
Sensitivity and Generalization in Neural Networks: an Empirical Study
stat.ML
In practice it is often found that large over-parameterized neural networks generalize better than their smaller counterparts, an observation that appears to conflict with classical notions of function complexity, which typically favor smaller models. In this work, we investigate this tension between complexity and gen...
computer science
177
On the importance of single directions for generalization
stat.ML
Despite their ability to memorize large datasets, deep neural networks often achieve good generalization performance. However, the differences between the learned solutions of networks which generalize and those which do not remain unclear. Additionally, the tuning properties of single directions (defined as the activa...
computer science
178
Maximin affinity learning of image segmentation
cs.CV
Images can be segmented by first using a classifier to predict an affinity graph that reflects the degree to which image pixels must be grouped together and then partitioning the graph to yield a segmentation. Machine learning has been applied to the affinity classifier to produce affinity graphs that are good in the s...
computer science
179
A General Framework for Development of the Cortex-like Visual Object Recognition System: Waves of Spikes, Predictive Coding and Universal Dictionary of Features
cs.CV
This study is focused on the development of the cortex-like visual object recognition system. We propose a general framework, which consists of three hierarchical levels (modules). These modules functionally correspond to the V1, V4 and IT areas. Both bottom-up and top-down connections between the hierarchical levels V...
computer science
180
Handwritten Digit Recognition with a Committee of Deep Neural Nets on GPUs
cs.LG
The competitive MNIST handwritten digit recognition benchmark has a long history of broken records since 1998. The most recent substantial improvement by others dates back 7 years (error rate 0.4%) . Recently we were able to significantly improve this result, using graphics cards to greatly speed up training of simple ...
computer science
181
Eclectic Extraction of Propositional Rules from Neural Networks
cs.LG
Artificial Neural Network is among the most popular algorithm for supervised learning. However, Neural Networks have a well-known drawback of being a "Black Box" learner that is not comprehensible to the Users. This lack of transparency makes it unsuitable for many high risk tasks such as medical diagnosis that require...
computer science
182
Message Passing Multi-Agent GANs
cs.CV
Communicating and sharing intelligence among agents is an important facet of achieving Artificial General Intelligence. As a first step towards this challenge, we introduce a novel framework for image generation: Message Passing Multi-Agent Generative Adversarial Networks (MPM GANs). While GANs have recently been shown...
computer science
183
Mode Regularized Generative Adversarial Networks
cs.LG
Although Generative Adversarial Networks achieve state-of-the-art results on a variety of generative tasks, they are regarded as highly unstable and prone to miss modes. We argue that these bad behaviors of GANs are due to the very particular functional shape of the trained discriminators in high dimensional spaces, wh...
computer science
184
Layer-Specific Adaptive Learning Rates for Deep Networks
cs.CV
The increasing complexity of deep learning architectures is resulting in training time requiring weeks or even months. This slow training is due in part to vanishing gradients, in which the gradients used by back-propagation are extremely large for weights connecting deep layers (layers near the output layer), and extr...
computer science
185
Return of Frustratingly Easy Domain Adaptation
cs.CV
Unlike human learning, machine learning often fails to handle changes between training (source) and test (target) input distributions. Such domain shifts, common in practical scenarios, severely damage the performance of conventional machine learning methods. Supervised domain adaptation methods have been proposed for ...
computer science
186
Origami: A 803 GOp/s/W Convolutional Network Accelerator
cs.CV
An ever increasing number of computer vision and image/video processing challenges are being approached using deep convolutional neural networks, obtaining state-of-the-art results in object recognition and detection, semantic segmentation, action recognition, optical flow and superresolution. Hardware acceleration of ...
computer science
187
Option Discovery in Hierarchical Reinforcement Learning using Spatio-Temporal Clustering
cs.LG
This paper introduces an automated skill acquisition framework in reinforcement learning which involves identifying a hierarchical description of the given task in terms of abstract states and extended actions between abstract states. Identifying such structures present in the task provides ways to simplify and speed u...
computer science
188
Residual Networks Behave Like Ensembles of Relatively Shallow Networks
cs.CV
In this work we propose a novel interpretation of residual networks showing that they can be seen as a collection of many paths of differing length. Moreover, residual networks seem to enable very deep networks by leveraging only the short paths during training. To support this observation, we rewrite residual networks...
computer science
189
Synthesizing the preferred inputs for neurons in neural networks via deep generator networks
cs.NE
Deep neural networks (DNNs) have demonstrated state-of-the-art results on many pattern recognition tasks, especially vision classification problems. Understanding the inner workings of such computational brains is both fascinating basic science that is interesting in its own right - similar to why we study the human br...
computer science
190
Structured Convolution Matrices for Energy-efficient Deep learning
cs.NE
We derive a relationship between network representation in energy-efficient neuromorphic architectures and block Toplitz convolutional matrices. Inspired by this connection, we develop deep convolutional networks using a family of structured convolutional matrices and achieve state-of-the-art trade-off between energy e...
computer science
191
Deep CORAL: Correlation Alignment for Deep Domain Adaptation
cs.CV
Deep neural networks are able to learn powerful representations from large quantities of labeled input data, however they cannot always generalize well across changes in input distributions. Domain adaptation algorithms have been proposed to compensate for the degradation in performance due to domain shift. In this pap...
computer science
192
Spatio-Temporal LSTM with Trust Gates for 3D Human Action Recognition
cs.CV
3D action recognition - analysis of human actions based on 3D skeleton data - becomes popular recently due to its succinctness, robustness, and view-invariant representation. Recent attempts on this problem suggested to develop RNN-based learning methods to model the contextual dependency in the temporal domain. In thi...
computer science
193
Generalized Dropout
cs.LG
Deep Neural Networks often require good regularizers to generalize well. Dropout is one such regularizer that is widely used among Deep Learning practitioners. Recent work has shown that Dropout can also be viewed as performing Approximate Bayesian Inference over the network parameters. In this work, we generalize this...
computer science
194
Parsimonious Inference on Convolutional Neural Networks: Learning and applying on-line kernel activation rules
cs.CV
A new, radical CNN design approach is presented in this paper, considering the reduction of the total computational load during inference. This is achieved by a new holistic intervention on both the CNN architecture and the training procedure, which targets to the parsimonious inference by learning to exploit or remove...
computer science
195
Model-Agnostic Meta-Learning for Fast Adaptation of Deep Networks
cs.LG
We propose an algorithm for meta-learning that is model-agnostic, in the sense that it is compatible with any model trained with gradient descent and applicable to a variety of different learning problems, including classification, regression, and reinforcement learning. The goal of meta-learning is to train a model on...
computer science
196
WRPN: Training and Inference using Wide Reduced-Precision Networks
cs.LG
For computer vision applications, prior works have shown the efficacy of reducing the numeric precision of model parameters (network weights) in deep neural networks but also that reducing the precision of activations hurts model accuracy much more than reducing the precision of model parameters. We study schemes to tr...
computer science
197
Deep Learning is Robust to Massive Label Noise
cs.LG
Deep neural networks trained on large supervised datasets have led to impressive results in image classification and other tasks. However, well-annotated datasets can be time-consuming and expensive to collect, lending increased interest to larger but noisy datasets that are more easily obtained. In this paper, we show...
computer science
198
Improving Content-Invariance in Gated Autoencoders for 2D and 3D Object Rotation
cs.CV
Content-invariance in mapping codes learned by GAEs is a useful feature for various relation learning tasks. In this paper we show that the content-invariance of mapping codes for images of 2D and 3D rotated objects can be substantially improved by extending the standard GAE loss (symmetric reconstruction error) with a...
computer science
199
Deep Learning for Sensor-based Activity Recognition: A Survey
cs.CV
Sensor-based activity recognition seeks the profound high-level knowledge about human activities from multitudes of low-level sensor readings. Conventional pattern recognition approaches have made tremendous progress in the past years. However, those methods often heavily rely on heuristic hand-crafted feature extracti...
computer science