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15,602
Edge-Linear First-Order Dependency Parsing with Undirected Minimum Spanning Tree Inference
cs.CL
The run time complexity of state-of-the-art inference algorithms in graph-based dependency parsing is super-linear in the number of input words (n). Recently, pruning algorithms for these models have shown to cut a large portion of the graph edges, with minimal damage to the resulting parse trees. Solving the inference...
computer science
15,603
Parser for Abstract Meaning Representation using Learning to Search
cs.CL
We develop a novel technique to parse English sentences into Abstract Meaning Representation (AMR) using SEARN, a Learning to Search approach, by modeling the concept and the relation learning in a unified framework. We evaluate our parser on multiple datasets from varied domains and show an absolute improvement of 2% ...
computer science
15,604
Standards for language resources in ISO -- Looking back at 13 fruitful years
cs.CL
This paper provides an overview of the various projects carried out within ISO committee TC 37/SC 4 dealing with the management of language (digital) resources. On the basis of the technical experience gained in the committee and the wider standardization landscape the paper identifies some possible trends for the futu...
computer science
15,605
Fast k-best Sentence Compression
cs.CL
A popular approach to sentence compression is to formulate the task as a constrained optimization problem and solve it with integer linear programming (ILP) tools. Unfortunately, dependence on ILP may make the compressor prohibitively slow, and thus approximation techniques have been proposed which are often complex an...
computer science
15,606
Emoticons vs. Emojis on Twitter: A Causal Inference Approach
cs.CL
Online writing lacks the non-verbal cues present in face-to-face communication, which provide additional contextual information about the utterance, such as the speaker's intention or affective state. To fill this void, a number of orthographic features, such as emoticons, expressive lengthening, and non-standard punct...
computer science
15,607
SentiWords: Deriving a High Precision and High Coverage Lexicon for Sentiment Analysis
cs.CL
Deriving prior polarity lexica for sentiment analysis - where positive or negative scores are associated with words out of context - is a challenging task. Usually, a trade-off between precision and coverage is hard to find, and it depends on the methodology used to build the lexicon. Manually annotated lexica provide ...
computer science
15,608
A Unified Tagging Solution: Bidirectional LSTM Recurrent Neural Network with Word Embedding
cs.CL
Bidirectional Long Short-Term Memory Recurrent Neural Network (BLSTM-RNN) has been shown to be very effective for modeling and predicting sequential data, e.g. speech utterances or handwritten documents. In this study, we propose to use BLSTM-RNN for a unified tagging solution that can be applied to various tagging tas...
computer science
15,609
Multinomial Loss on Held-out Data for the Sparse Non-negative Matrix Language Model
cs.CL
We describe Sparse Non-negative Matrix (SNM) language model estimation using multinomial loss on held-out data. Being able to train on held-out data is important in practical situations where the training data is usually mismatched from the held-out/test data. It is also less constrained than the previous training al...
computer science
15,610
An Empirical Study on Sentiment Classification of Chinese Review using Word Embedding
cs.CL
In this article, how word embeddings can be used as features in Chinese sentiment classification is presented. Firstly, a Chinese opinion corpus is built with a million comments from hotel review websites. Then the word embeddings which represent each comment are used as input in different machine learning methods for ...
computer science
15,611
Comparing Writing Styles using Word Embedding and Dynamic Time Warping
cs.CL
The development of plot or story in novels is reflected in the content and the words used. The flow of sentiments, which is one aspect of writing style, can be quantified by analyzing the flow of words. This study explores literary works as signals in word embedding space and tries to compare writing styles of popular ...
computer science
15,612
"Pale as death" or "pâle comme la mort" : Frozen similes used as literary clichés
cs.CL
The present study is focused on the automatic identification and description of frozen similes in British and French novels written between the 19 th century and the beginning of the 20 th century. Two main patterns of frozen similes were considered: adjectival ground + simile marker + nominal vehicle (e.g. happy as a ...
computer science
15,613
Population size predicts lexical diversity, but so does the mean sea level - why it is important to correctly account for the structure of temporal data
cs.CL
In order to demonstrate why it is important to correctly account for the (serial dependent) structure of temporal data, we document an apparently spectacular relationship between population size and lexical diversity: for five out of seven investigated languages, there is a strong relationship between population size a...
computer science
15,614
Introducing SKYSET - a Quintuple Approach for Improving Instructions
cs.CL
A new approach called SKYSET (Synthetic Knowledge Yield Social Entities Translation) is proposed to validate completeness and to reduce ambiguity from written instructional documentation. SKYSET utilizes a quintuple set of standardized categories, which differs from traditional approaches that typically use triples. Th...
computer science
15,615
The Goldilocks Principle: Reading Children's Books with Explicit Memory Representations
cs.CL
We introduce a new test of how well language models capture meaning in children's books. Unlike standard language modelling benchmarks, it distinguishes the task of predicting syntactic function words from that of predicting lower-frequency words, which carry greater semantic content. We compare a range of state-of-the...
computer science
15,616
A Chinese POS Decision Method Using Korean Translation Information
cs.CL
In this paper we propose a method that imitates a translation expert using the Korean translation information and analyse the performance. Korean is good at tagging than Chinese, so we can use this property in Chinese POS tagging.
computer science
15,617
Investigating the stylistic relevance of adjective and verb simile markers
cs.CL
Similes play an important role in literary texts not only as rhetorical devices and as figures of speech but also because of their evocative power, their aptness for description and the relative ease with which they can be combined with other figures of speech (Israel et al. 2004). Detecting all types of simile constru...
computer science
15,618
USFD: Twitter NER with Drift Compensation and Linked Data
cs.CL
This paper describes a pilot NER system for Twitter, comprising the USFD system entry to the W-NUT 2015 NER shared task. The goal is to correctly label entities in a tweet dataset, using an inventory of ten types. We employ structured learning, drawing on gazetteers taken from Linked Data, and on unsupervised clusterin...
computer science
15,619
Larger-Context Language Modelling
cs.CL
In this work, we propose a novel method to incorporate corpus-level discourse information into language modelling. We call this larger-context language model. We introduce a late fusion approach to a recurrent language model based on long short-term memory units (LSTM), which helps the LSTM unit keep intra-sentence dep...
computer science
15,620
A Multilingual FrameNet-based Grammar and Lexicon for Controlled Natural Language
cs.CL
Berkeley FrameNet is a lexico-semantic resource for English based on the theory of frame semantics. It has been exploited in a range of natural language processing applications and has inspired the development of framenets for many languages. We present a methodological approach to the extraction and generation of a co...
computer science
15,621
Character-based Neural Machine Translation
cs.CL
We introduce a neural machine translation model that views the input and output sentences as sequences of characters rather than words. Since word-level information provides a crucial source of bias, our input model composes representations of character sequences into representations of words (as determined by whitespa...
computer science
15,622
Learning to Represent Words in Context with Multilingual Supervision
cs.CL
We present a neural network architecture based on bidirectional LSTMs to compute representations of words in the sentential contexts. These context-sensitive word representations are suitable for, e.g., distinguishing different word senses and other context-modulated variations in meaning. To learn the parameters of ou...
computer science
15,623
A System for Extracting Sentiment from Large-Scale Arabic Social Data
cs.CL
Social media data in Arabic language is becoming more and more abundant. It is a consensus that valuable information lies in social media data. Mining this data and making the process easier are gaining momentum in the industries. This paper describes an enterprise system we developed for extracting sentiment from larg...
computer science
15,624
Latent Dirichlet Allocation Based Organisation of Broadcast Media Archives for Deep Neural Network Adaptation
cs.CL
This paper presents a new method for the discovery of latent domains in diverse speech data, for the use of adaptation of Deep Neural Networks (DNNs) for Automatic Speech Recognition. Our work focuses on transcription of multi-genre broadcast media, which is often only categorised broadly in terms of high level genres ...
computer science
15,625
Learning to retrieve out-of-vocabulary words in speech recognition
cs.CL
Many Proper Names (PNs) are Out-Of-Vocabulary (OOV) words for speech recognition systems used to process diachronic audio data. To help recovery of the PNs missed by the system, relevant OOV PNs can be retrieved out of the many OOVs by exploiting semantic context of the spoken content. In this paper, we propose two neu...
computer science
15,626
Gaussian Mixture Embeddings for Multiple Word Prototypes
cs.CL
Recently, word representation has been increasingly focused on for its excellent properties in representing the word semantics. Previous works mainly suffer from the problem of polysemy phenomenon. To address this problem, most of previous models represent words as multiple distributed vectors. However, it cannot refle...
computer science
15,627
Good, Better, Best: Choosing Word Embedding Context
cs.CL
We propose two methods of learning vector representations of words and phrases that each combine sentence context with structural features extracted from dependency trees. Using several variations of neural network classifier, we show that these combined methods lead to improved performance when used as input features ...
computer science
15,628
Reasoning in Vector Space: An Exploratory Study of Question Answering
cs.CL
Question answering tasks have shown remarkable progress with distributed vector representation. In this paper, we investigate the recently proposed Facebook bAbI tasks which consist of twenty different categories of questions that require complex reasoning. Because the previous work on bAbI are all end-to-end models, e...
computer science
15,629
Polysemy in Controlled Natural Language Texts
cs.CL
Computational semantics and logic-based controlled natural languages (CNL) do not address systematically the word sense disambiguation problem of content words, i.e., they tend to interpret only some functional words that are crucial for construction of discourse representation structures. We show that micro-ontologies...
computer science
15,630
Improving Neural Machine Translation Models with Monolingual Data
cs.CL
Neural Machine Translation (NMT) has obtained state-of-the art performance for several language pairs, while only using parallel data for training. Target-side monolingual data plays an important role in boosting fluency for phrase-based statistical machine translation, and we investigate the use of monolingual data fo...
computer science
15,631
Spoken Language Translation for Polish
cs.CL
Spoken language translation (SLT) is becoming more important in the increasingly globalized world, both from a social and economic point of view. It is one of the major challenges for automatic speech recognition (ASR) and machine translation (MT), driving intense research activities in these areas. While past research...
computer science
15,632
OntoSeg: a Novel Approach to Text Segmentation using Ontological Similarity
cs.CL
Text segmentation (TS) aims at dividing long text into coherent segments which reflect the subtopic structure of the text. It is beneficial to many natural language processing tasks, such as Information Retrieval (IR) and document summarisation. Current approaches to text segmentation are similar in that they all use w...
computer science
15,633
Category Enhanced Word Embedding
cs.CL
Distributed word representations have been demonstrated to be effective in capturing semantic and syntactic regularities. Unsupervised representation learning from large unlabeled corpora can learn similar representations for those words that present similar co-occurrence statistics. Besides local occurrence statistics...
computer science
15,634
A C-LSTM Neural Network for Text Classification
cs.CL
Neural network models have been demonstrated to be capable of achieving remarkable performance in sentence and document modeling. Convolutional neural network (CNN) and recurrent neural network (RNN) are two mainstream architectures for such modeling tasks, which adopt totally different ways of understanding natural la...
computer science
15,635
Multilingual Language Processing From Bytes
cs.CL
We describe an LSTM-based model which we call Byte-to-Span (BTS) that reads text as bytes and outputs span annotations of the form [start, length, label] where start positions, lengths, and labels are separate entries in our vocabulary. Because we operate directly on unicode bytes rather than language-specific words or...
computer science
15,636
Augmenting Phrase Table by Employing Lexicons for Pivot-based SMT
cs.CL
Pivot language is employed as a way to solve the data sparseness problem in machine translation, especially when the data for a particular language pair does not exist. The combination of source-to-pivot and pivot-to-target translation models can induce a new translation model through the pivot language. However, the e...
computer science
15,637
Benchmarking sentiment analysis methods for large-scale texts: A case for using continuum-scored words and word shift graphs
cs.CL
The emergence and global adoption of social media has rendered possible the real-time estimation of population-scale sentiment, bearing profound implications for our understanding of human behavior. Given the growing assortment of sentiment measuring instruments, comparisons between them are evidently required. Here, w...
computer science
15,638
Annotating Character Relationships in Literary Texts
cs.CL
We present a dataset of manually annotated relationships between characters in literary texts, in order to support the training and evaluation of automatic methods for relation type prediction in this domain (Makazhanov et al., 2014; Kokkinakis, 2013) and the broader computational analysis of literary character (Elson ...
computer science
15,639
Effective LSTMs for Target-Dependent Sentiment Classification
cs.CL
Target-dependent sentiment classification remains a challenge: modeling the semantic relatedness of a target with its context words in a sentence. Different context words have different influences on determining the sentiment polarity of a sentence towards the target. Therefore, it is desirable to integrate the connect...
computer science
15,640
Neural Generative Question Answering
cs.CL
This paper presents an end-to-end neural network model, named Neural Generative Question Answering (GENQA), that can generate answers to simple factoid questions, based on the facts in a knowledge-base. More specifically, the model is built on the encoder-decoder framework for sequence-to-sequence learning, while equip...
computer science
15,641
What Makes it Difficult to Understand a Scientific Literature?
cs.CL
In the artificial intelligence area, one of the ultimate goals is to make computers understand human language and offer assistance. In order to achieve this ideal, researchers of computer science have put forward a lot of models and algorithms attempting at enabling the machine to analyze and process human natural lang...
computer science
15,642
Want Answers? A Reddit Inspired Study on How to Pose Questions
cs.CL
Questions form an integral part of our everyday communication, both offline and online. Getting responses to our questions from others is fundamental to satisfying our information need and in extending our knowledge boundaries. A question may be represented using various factors such as social, syntactic, semantic, etc...
computer science
15,643
Minimum Risk Training for Neural Machine Translation
cs.CL
We propose minimum risk training for end-to-end neural machine translation. Unlike conventional maximum likelihood estimation, minimum risk training is capable of optimizing model parameters directly with respect to arbitrary evaluation metrics, which are not necessarily differentiable. Experiments show that our approa...
computer science
15,644
Deep Speech 2: End-to-End Speech Recognition in English and Mandarin
cs.CL
We show that an end-to-end deep learning approach can be used to recognize either English or Mandarin Chinese speech--two vastly different languages. Because it replaces entire pipelines of hand-engineered components with neural networks, end-to-end learning allows us to handle a diverse variety of speech including noi...
computer science
15,645
Mined Semantic Analysis: A New Concept Space Model for Semantic Representation of Textual Data
cs.CL
Mined Semantic Analysis (MSA) is a novel concept space model which employs unsupervised learning to generate semantic representations of text. MSA represents textual structures (terms, phrases, documents) as a Bag of Concepts (BoC) where concepts are derived from concept rich encyclopedic corpora. Traditional concept s...
computer science
15,646
A Hidden Markov Model Based System for Entity Extraction from Social Media English Text at FIRE 2015
cs.CL
This paper presents the experiments carried out by us at Jadavpur University as part of the participation in FIRE 2015 task: Entity Extraction from Social Media Text - Indian Languages (ESM-IL). The tool that we have developed for the task is based on Trigram Hidden Markov Model that utilizes information like gazetteer...
computer science
15,647
Agreement-based Joint Training for Bidirectional Attention-based Neural Machine Translation
cs.CL
The attentional mechanism has proven to be effective in improving end-to-end neural machine translation. However, due to the intricate structural divergence between natural languages, unidirectional attention-based models might only capture partial aspects of attentional regularities. We propose agreement-based joint t...
computer science
15,648
Morpho-syntactic Lexicon Generation Using Graph-based Semi-supervised Learning
cs.CL
Morpho-syntactic lexicons provide information about the morphological and syntactic roles of words in a language. Such lexicons are not available for all languages and even when available, their coverage can be limited. We present a graph-based semi-supervised learning method that uses the morphological, syntactic and ...
computer science
15,649
ABCNN: Attention-Based Convolutional Neural Network for Modeling Sentence Pairs
cs.CL
How to model a pair of sentences is a critical issue in many NLP tasks such as answer selection (AS), paraphrase identification (PI) and textual entailment (TE). Most prior work (i) deals with one individual task by fine-tuning a specific system; (ii) models each sentence's representation separately, rarely considering...
computer science
15,650
Towards automating the generation of derivative nouns in Sanskrit by simulating Panini
cs.CL
About 1115 rules in Astadhyayi from A.4.1.76 to A.5.4.160 deal with generation of derivative nouns, making it one of the largest topical sections in Astadhyayi, called as the Taddhita section owing to the head rule A.4.1.76. This section is a systematic arrangement of rules that enumerates various affixes that are used...
computer science
15,651
A Planning based Framework for Essay Generation
cs.CL
Generating an article automatically with computer program is a challenging task in artificial intelligence and natural language processing. In this paper, we target at essay generation, which takes as input a topic word in mind and generates an organized article under the theme of the topic. We follow the idea of text ...
computer science
15,652
Morphological Inflection Generation Using Character Sequence to Sequence Learning
cs.CL
Morphological inflection generation is the task of generating the inflected form of a given lemma corresponding to a particular linguistic transformation. We model the problem of inflection generation as a character sequence to sequence learning problem and present a variant of the neural encoder-decoder model for solv...
computer science
15,653
The 2015 Sheffield System for Transcription of Multi-Genre Broadcast Media
cs.CL
We describe the University of Sheffield system for participation in the 2015 Multi-Genre Broadcast (MGB) challenge task of transcribing multi-genre broadcast shows. Transcription was one of four tasks proposed in the MGB challenge, with the aim of advancing the state of the art of automatic speech recognition, speaker ...
computer science
15,654
The Improvement of Negative Sentences Translation in English-to-Korean Machine Translation
cs.CL
This paper describes the algorithm for translating English negative sentences into Korean in English-Korean Machine Translation (EKMT). The proposed algorithm is based on the comparative study of English and Korean negative sentences. The earlier translation software cannot translate English negative sentences into acc...
computer science
15,655
Learning Document Embeddings by Predicting N-grams for Sentiment Classification of Long Movie Reviews
cs.CL
Despite the loss of semantic information, bag-of-ngram based methods still achieve state-of-the-art results for tasks such as sentiment classification of long movie reviews. Many document embeddings methods have been proposed to capture semantics, but they still can't outperform bag-of-ngram based methods on this task....
computer science
15,656
Sentiment/Subjectivity Analysis Survey for Languages other than English
cs.CL
Subjective and sentiment analysis have gained considerable attention recently. Most of the resources and systems built so far are done for English. The need for designing systems for other languages is increasing. This paper surveys different ways used for building systems for subjective and sentiment analysis for lang...
computer science
15,657
Contrastive Entropy: A new evaluation metric for unnormalized language models
cs.CL
Perplexity (per word) is the most widely used metric for evaluating language models. Despite this, there has been no dearth of criticism for this metric. Most of these criticisms center around lack of correlation with extrinsic metrics like word error rate (WER), dependence upon shared vocabulary for model comparison a...
computer science
15,658
Distant IE by Bootstrapping Using Lists and Document Structure
cs.CL
Distant labeling for information extraction (IE) suffers from noisy training data. We describe a way of reducing the noise associated with distant IE by identifying coupling constraints between potential instance labels. As one example of coupling, items in a list are likely to have the same label. A second example of ...
computer science
15,659
Multi-Source Neural Translation
cs.CL
We build a multi-source machine translation model and train it to maximize the probability of a target English string given French and German sources. Using the neural encoder-decoder framework, we explore several combination methods and report up to +4.8 Bleu increases on top of a very strong attention-based neural tr...
computer science
15,660
The Role of Context Types and Dimensionality in Learning Word Embeddings
cs.CL
We provide the first extensive evaluation of how using different types of context to learn skip-gram word embeddings affects performance on a wide range of intrinsic and extrinsic NLP tasks. Our results suggest that while intrinsic tasks tend to exhibit a clear preference to particular types of contexts and higher dime...
computer science
15,661
Incorporating Structural Alignment Biases into an Attentional Neural Translation Model
cs.CL
Neural encoder-decoder models of machine translation have achieved impressive results, rivalling traditional translation models. However their modelling formulation is overly simplistic, and omits several key inductive biases built into traditional models. In this paper we extend the attentional neural translation mode...
computer science
15,662
Part-of-Speech Tagging for Code-mixed Indian Social Media Text at ICON 2015
cs.CL
This paper discusses the experiments carried out by us at Jadavpur University as part of the participation in ICON 2015 task: POS Tagging for Code-mixed Indian Social Media Text. The tool that we have developed for the task is based on Trigram Hidden Markov Model that utilizes information from dictionary as well as som...
computer science
15,663
Recurrent Memory Networks for Language Modeling
cs.CL
Recurrent Neural Networks (RNN) have obtained excellent result in many natural language processing (NLP) tasks. However, understanding and interpreting the source of this success remains a challenge. In this paper, we propose Recurrent Memory Network (RMN), a novel RNN architecture, that not only amplifies the power of...
computer science
15,664
Language to Logical Form with Neural Attention
cs.CL
Semantic parsing aims at mapping natural language to machine interpretable meaning representations. Traditional approaches rely on high-quality lexicons, manually-built templates, and linguistic features which are either domain- or representation-specific. In this paper we present a general method based on an attention...
computer science
15,665
Joint Learning of the Embedding of Words and Entities for Named Entity Disambiguation
cs.CL
Named Entity Disambiguation (NED) refers to the task of resolving multiple named entity mentions in a document to their correct references in a knowledge base (KB) (e.g., Wikipedia). In this paper, we propose a novel embedding method specifically designed for NED. The proposed method jointly maps words and entities int...
computer science
15,666
Leveraging Sentence-level Information with Encoder LSTM for Semantic Slot Filling
cs.CL
Recurrent Neural Network (RNN) and one of its specific architectures, Long Short-Term Memory (LSTM), have been widely used for sequence labeling. In this paper, we first enhance LSTM-based sequence labeling to explicitly model label dependencies. Then we propose another enhancement to incorporate the global information...
computer science
15,667
Empirical Gaussian priors for cross-lingual transfer learning
cs.CL
Sequence model learning algorithms typically maximize log-likelihood minus the norm of the model (or minimize Hamming loss + norm). In cross-lingual part-of-speech (POS) tagging, our target language training data consists of sequences of sentences with word-by-word labels projected from translations in $k$ languages fo...
computer science
15,668
Argumentation Mining in User-Generated Web Discourse
cs.CL
The goal of argumentation mining, an evolving research field in computational linguistics, is to design methods capable of analyzing people's argumentation. In this article, we go beyond the state of the art in several ways. (i) We deal with actual Web data and take up the challenges given by the variety of registers, ...
computer science
15,669
The Effects of Age, Gender and Region on Non-standard Linguistic Variation in Online Social Networks
cs.CL
We present a corpus-based analysis of the effects of age, gender and region of origin on the production of both "netspeak" or "chatspeak" features and regional speech features in Flemish Dutch posts that were collected from a Belgian online social network platform. The present study shows that combining quantitative an...
computer science
15,670
Trans-gram, Fast Cross-lingual Word-embeddings
cs.CL
We introduce Trans-gram, a simple and computationally-efficient method to simultaneously learn and align wordembeddings for a variety of languages, using only monolingual data and a smaller set of sentence-aligned data. We use our new method to compute aligned wordembeddings for twenty-one languages using English as a ...
computer science
15,671
Environmental Noise Embeddings for Robust Speech Recognition
cs.CL
We propose a novel deep neural network architecture for speech recognition that explicitly employs knowledge of the background environmental noise within a deep neural network acoustic model. A deep neural network is used to predict the acoustic environment in which the system in being used. The discriminative embeddin...
computer science
15,672
Predicting the Effectiveness of Self-Training: Application to Sentiment Classification
cs.CL
The goal of this paper is to investigate the connection between the performance gain that can be obtained by selftraining and the similarity between the corpora used in this approach. Self-training is a semi-supervised technique designed to increase the performance of machine learning algorithms by automatically classi...
computer science
15,673
Political Speech Generation
cs.CL
In this report we present a system that can generate political speeches for a desired political party. Furthermore, the system allows to specify whether a speech should hold a supportive or opposing opinion. The system relies on a combination of several state-of-the-art NLP methods which are discussed in this report. T...
computer science
15,674
Implicit Distortion and Fertility Models for Attention-based Encoder-Decoder NMT Model
cs.CL
Neural machine translation has shown very promising results lately. Most NMT models follow the encoder-decoder framework. To make encoder-decoder models more flexible, attention mechanism was introduced to machine translation and also other tasks like speech recognition and image captioning. We observe that the quality...
computer science
15,675
EvoGrader: an online formative assessment tool for automatically evaluating written evolutionary explanations
cs.CL
EvoGrader is a free, online, on-demand formative assessment service designed for use in undergraduate biology classrooms. EvoGrader's web portal is powered by Amazon's Elastic Cloud and run with LightSIDE Lab's open-source machine-learning tools. The EvoGrader web portal allows biology instructors to upload a response ...
computer science
15,676
Smoothing parameter estimation framework for IBM word alignment models
cs.CL
IBM models are very important word alignment models in Machine Translation. Following the Maximum Likelihood Estimation principle to estimate their parameters, the models will easily overfit the training data when the data are sparse. While smoothing is a very popular solution in Language Model, there still lacks studi...
computer science
15,677
Towards Turkish ASR: Anatomy of a rule-based Turkish g2p
cs.CL
This paper describes the architecture and implementation of a rule-based grapheme to phoneme converter for Turkish. The system accepts surface form as input, outputs SAMPA mapping of the all parallel pronounciations according to the morphological analysis together with stress positions. The system has been implemented ...
computer science
15,678
Multimodal Pivots for Image Caption Translation
cs.CL
We present an approach to improve statistical machine translation of image descriptions by multimodal pivots defined in visual space. The key idea is to perform image retrieval over a database of images that are captioned in the target language, and use the captions of the most similar images for crosslingual reranking...
computer science
15,679
Detecting and Extracting Events from Text Documents
cs.CL
Events of various kinds are mentioned and discussed in text documents, whether they are books, news articles, blogs or microblog feeds. The paper starts by giving an overview of how events are treated in linguistics and philosophy. We follow this discussion by surveying how events and associated information are handled...
computer science
15,680
Modeling Coverage for Neural Machine Translation
cs.CL
Attention mechanism has enhanced state-of-the-art Neural Machine Translation (NMT) by jointly learning to align and translate. It tends to ignore past alignment information, however, which often leads to over-translation and under-translation. To address this problem, we propose coverage-based NMT in this paper. We mai...
computer science
15,681
Hierarchical Latent Word Clustering
cs.CL
This paper presents a new Bayesian non-parametric model by extending the usage of Hierarchical Dirichlet Allocation to extract tree structured word clusters from text data. The inference algorithm of the model collects words in a cluster if they share similar distribution over documents. In our experiments, we observed...
computer science
15,682
On Structured Sparsity of Phonological Posteriors for Linguistic Parsing
cs.CL
The speech signal conveys information on different time scales from short time scale or segmental, associated to phonological and phonetic information to long time scale or supra segmental, associated to syllabic and prosodic information. Linguistic and neurocognitive studies recognize the phonological classes at segme...
computer science
15,683
Syntax-Semantics Interaction Parsing Strategies. Inside SYNTAGMA
cs.CL
This paper discusses SYNTAGMA, a rule based NLP system addressing the tricky issues of syntactic ambiguity reduction and word sense disambiguation as well as providing innovative and original solutions for constituent generation and constraints management. To provide an insight into how it operates, the system's genera...
computer science
15,684
Paraphrase Generation from Latent-Variable PCFGs for Semantic Parsing
cs.CL
One of the limitations of semantic parsing approaches to open-domain question answering is the lexicosyntactic gap between natural language questions and knowledge base entries -- there are many ways to ask a question, all with the same answer. In this paper we propose to bridge this gap by generating paraphrases of th...
computer science
15,685
A Kernel Independence Test for Geographical Language Variation
cs.CL
Quantifying the degree of spatial dependence for linguistic variables is a key task for analyzing dialectal variation. However, existing approaches have important drawbacks. First, they are based on parametric models of dependence, which limits their power in cases where the underlying parametric assumptions are violat...
computer science
15,686
Sentiment Analysis of Twitter Data: A Survey of Techniques
cs.CL
With the advancement of web technology and its growth, there is a huge volume of data present in the web for internet users and a lot of data is generated too. Internet has become a platform for online learning, exchanging ideas and sharing opinions. Social networking sites like Twitter, Facebook, Google+ are rapidly g...
computer science
15,687
Recurrent Neural Network Postfilters for Statistical Parametric Speech Synthesis
cs.CL
In the last two years, there have been numerous papers that have looked into using Deep Neural Networks to replace the acoustic model in traditional statistical parametric speech synthesis. However, far less attention has been paid to approaches like DNN-based postfiltering where DNNs work in conjunction with tradition...
computer science
15,688
Zipf's law is a consequence of coherent language production
cs.CL
The task of text segmentation may be undertaken at many levels in text analysis---paragraphs, sentences, words, or even letters. Here, we focus on a relatively fine scale of segmentation, hypothesizing it to be in accord with a stochastic model of language generation, as the smallest scale where independent units of me...
computer science
15,689
Efficient Character-level Document Classification by Combining Convolution and Recurrent Layers
cs.CL
Document classification tasks were primarily tackled at word level. Recent research that works with character-level inputs shows several benefits over word-level approaches such as natural incorporation of morphemes and better handling of rare words. We propose a neural network architecture that utilizes both convoluti...
computer science
15,690
The Grail theorem prover: Type theory for syntax and semantics
cs.CL
As the name suggests, type-logical grammars are a grammar formalism based on logic and type theory. From the prespective of grammar design, type-logical grammars develop the syntactic and semantic aspects of linguistic phenomena hand-in-hand, letting the desired semantics of an expression inform the syntactic type and ...
computer science
15,691
Many Languages, One Parser
cs.CL
We train one multilingual model for dependency parsing and use it to parse sentences in several languages. The parsing model uses (i) multilingual word clusters and embeddings; (ii) token-level language information; and (iii) language-specific features (fine-grained POS tags). This input representation enables the pars...
computer science
15,692
Massively Multilingual Word Embeddings
cs.CL
We introduce new methods for estimating and evaluating embeddings of words in more than fifty languages in a single shared embedding space. Our estimation methods, multiCluster and multiCCA, use dictionaries and monolingual data; they do not require parallel data. Our new evaluation method, multiQVEC-CCA, is shown to c...
computer science
15,693
Fantastic 4 system for NIST 2015 Language Recognition Evaluation
cs.CL
This article describes the systems jointly submitted by Institute for Infocomm (I$^2$R), the Laboratoire d'Informatique de l'Universit\'e du Maine (LIUM), Nanyang Technology University (NTU) and the University of Eastern Finland (UEF) for 2015 NIST Language Recognition Evaluation (LRE). The submitted system is a fusion...
computer science
15,694
Swivel: Improving Embeddings by Noticing What's Missing
cs.CL
We present Submatrix-wise Vector Embedding Learner (Swivel), a method for generating low-dimensional feature embeddings from a feature co-occurrence matrix. Swivel performs approximate factorization of the point-wise mutual information matrix via stochastic gradient descent. It uses a piecewise loss with special handli...
computer science
15,695
Exploring the Limits of Language Modeling
cs.CL
In this work we explore recent advances in Recurrent Neural Networks for large scale Language Modeling, a task central to language understanding. We extend current models to deal with two key challenges present in this task: corpora and vocabulary sizes, and complex, long term structure of language. We perform an exhau...
computer science
15,696
Simple Search Algorithms on Semantic Networks Learned from Language Use
cs.CL
Recent empirical and modeling research has focused on the semantic fluency task because it is informative about semantic memory. An interesting interplay arises between the richness of representations in semantic memory and the complexity of algorithms required to process it. It has remained an open question whether re...
computer science
15,697
Automatic Sarcasm Detection: A Survey
cs.CL
Automatic sarcasm detection is the task of predicting sarcasm in text. This is a crucial step to sentiment analysis, considering prevalence and challenges of sarcasm in sentiment-bearing text. Beginning with an approach that used speech-based features, sarcasm detection has witnessed great interest from the sentiment a...
computer science
15,698
TabMCQ: A Dataset of General Knowledge Tables and Multiple-choice Questions
cs.CL
We describe two new related resources that facilitate modelling of general knowledge reasoning in 4th grade science exams. The first is a collection of curated facts in the form of tables, and the second is a large set of crowd-sourced multiple-choice questions covering the facts in the tables. Through the setup of the...
computer science
15,699
Attention-Based Convolutional Neural Network for Machine Comprehension
cs.CL
Understanding open-domain text is one of the primary challenges in natural language processing (NLP). Machine comprehension benchmarks evaluate the system's ability to understand text based on the text content only. In this work, we investigate machine comprehension on MCTest, a question answering (QA) benchmark. Prior...
computer science
15,700
Exploiting Lists of Names for Named Entity Identification of Financial Institutions from Unstructured Documents
cs.CL
There is a wealth of information about financial systems that is embedded in document collections. In this paper, we focus on a specialized text extraction task for this domain. The objective is to extract mentions of names of financial institutions, or FI names, from financial prospectus documents, and to identify the...
computer science
15,701
Cross-Language Domain Adaptation for Classifying Crisis-Related Short Messages
cs.CL
Rapid crisis response requires real-time analysis of messages. After a disaster happens, volunteers attempt to classify tweets to determine needs, e.g., supplies, infrastructure damage, etc. Given labeled data, supervised machine learning can help classify these messages. Scarcity of labeled data causes poor performanc...
computer science