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ACL
Universal Decompositional Semantic Parsing
We introduce a transductive model for parsing into Universal Decompositional Semantics (UDS) representations, which jointly learns to map natural language utterances into UDS graph structures and annotate the graph with decompositional semantic attribute scores. We also introduce a strong pipeline model for parsing int...
d64ccc914e4f06ce406ec5b6c87f0f0a
2,020
[ "we introduce a transductive model for parsing into universal decompositional semantics ( uds ) representations , which jointly learns to map natural language utterances into uds graph structures and annotate the graph with decompositional semantic attribute scores .", "we also introduce a strong pipeline model f...
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ACL
GL-CLeF: A Global–Local Contrastive Learning Framework for Cross-lingual Spoken Language Understanding
Due to high data demands of current methods, attention to zero-shot cross-lingual spoken language understanding (SLU) has grown, as such approaches greatly reduce human annotation effort. However, existing models solely rely on shared parameters, which can only perform implicit alignment across languages. We present Gl...
c341a3f2700ca4e1cce92a250751070e
2,022
[ "due to high data demands of current methods , attention to zero - shot cross - lingual spoken language understanding ( slu ) has grown , as such approaches greatly reduce human annotation effort .", "however , existing models solely rely on shared parameters , which can only perform implicit alignment across lan...
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ACL
A Survey of Code-switching: Linguistic and Social Perspectives for Language Technologies
The analysis of data in which multiple languages are represented has gained popularity among computational linguists in recent years. So far, much of this research focuses mainly on the improvement of computational methods and largely ignores linguistic and social aspects of C-S discussed across a wide range of languag...
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2,021
[ "the analysis of data in which multiple languages are represented has gained popularity among computational linguists in recent years .", "so far , much of this research focuses mainly on the improvement of computational methods and largely ignores linguistic and social aspects of c - s discussed across a wide ra...
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ACL
AMR Parsing via Graph-Sequence Iterative Inference
We propose a new end-to-end model that treats AMR parsing as a series of dual decisions on the input sequence and the incrementally constructed graph. At each time step, our model performs multiple rounds of attention, reasoning, and composition that aim to answer two critical questions: (1) which part of the input seq...
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[ "we propose a new end - to - end model that treats amr parsing as a series of dual decisions on the input sequence and the incrementally constructed graph .", "at each time step , our model performs multiple rounds of attention , reasoning , and composition that aim to answer two critical questions : ( 1 ) which ...
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ACL
IMoJIE: Iterative Memory-Based Joint Open Information Extraction
While traditional systems for Open Information Extraction were statistical and rule-based, recently neural models have been introduced for the task. Our work builds upon CopyAttention, a sequence generation OpenIE model (Cui et. al. 18). Our analysis reveals that CopyAttention produces a constant number of extractions ...
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[ "while traditional systems for open information extraction were statistical and rule - based , recently neural models have been introduced for the task .", "our work builds upon copyattention , a sequence generation openie model ( cui et .", "al . 18 ) .", "our analysis reveals that copyattention produces a c...
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ACL
mTVR: Multilingual Moment Retrieval in Videos
We introduce mTVR, a large-scale multilingual video moment retrieval dataset, containing 218K English and Chinese queries from 21.8K TV show video clips. The dataset is collected by extending the popular TVR dataset (in English) with paired Chinese queries and subtitles. Compared to existing moment retrieval datasets, ...
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2,021
[ "we introduce mtvr , a large - scale multilingual video moment retrieval dataset , containing 218k english and chinese queries from 21 . 8k tv show video clips .", "the dataset is collected by extending the popular tvr dataset ( in english ) with paired chinese queries and subtitles .", "compared to existing mo...
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ACL
iSarcasm: A Dataset of Intended Sarcasm
We consider the distinction between intended and perceived sarcasm in the context of textual sarcasm detection. The former occurs when an utterance is sarcastic from the perspective of its author, while the latter occurs when the utterance is interpreted as sarcastic by the audience. We show the limitations of previous...
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2,020
[ "we consider the distinction between intended and perceived sarcasm in the context of textual sarcasm detection .", "the former occurs when an utterance is sarcastic from the perspective of its author , while the latter occurs when the utterance is interpreted as sarcastic by the audience .", "we show the limit...
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ACL
Alignment Rationale for Natural Language Inference
Deep learning models have achieved great success on the task of Natural Language Inference (NLI), though only a few attempts try to explain their behaviors. Existing explanation methods usually pick prominent features such as words or phrases from the input text. However, for NLI, alignments among words or phrases are ...
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[ "deep learning models have achieved great success on the task of natural language inference ( nli ) , though only a few attempts try to explain their behaviors .", "existing explanation methods usually pick prominent features such as words or phrases from the input text .", "however , for nli , alignments among...
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ACL
Single-/Multi-Source Cross-Lingual NER via Teacher-Student Learning on Unlabeled Data in Target Language
To better tackle the named entity recognition (NER) problem on languages with little/no labeled data, cross-lingual NER must effectively leverage knowledge learned from source languages with rich labeled data. Previous works on cross-lingual NER are mostly based on label projection with pairwise texts or direct model t...
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2,020
[ "to better tackle the named entity recognition ( ner ) problem on languages with little / no labeled data , cross - lingual ner must effectively leverage knowledge learned from source languages with rich labeled data .", "previous works on cross - lingual ner are mostly based on label projection with pairwise tex...
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ACL
Common Sense Beyond English: Evaluating and Improving Multilingual Language Models for Commonsense Reasoning
Commonsense reasoning research has so far been limited to English. We aim to evaluate and improve popular multilingual language models (ML-LMs) to help advance commonsense reasoning (CSR) beyond English. We collect the Mickey corpus, consisting of 561k sentences in 11 different languages, which can be used for analyzin...
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[ "commonsense reasoning research has so far been limited to english .", "we aim to evaluate and improve popular multilingual language models ( ml - lms ) to help advance commonsense reasoning ( csr ) beyond english .", "we collect the mickey corpus , consisting of 561k sentences in 11 different languages , which...
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ACL
A Reinforced Generation of Adversarial Examples for Neural Machine Translation
Neural machine translation systems tend to fail on less decent inputs despite its significant efficacy, which may significantly harm the credibility of these systems—fathoming how and when neural-based systems fail in such cases is critical for industrial maintenance. Instead of collecting and analyzing bad cases using...
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2,020
[ "neural machine translation systems tend to fail on less decent inputs despite its significant efficacy , which may significantly harm the credibility of these systems — fathoming how and when neural - based systems fail in such cases is critical for industrial maintenance .", "instead of collecting and analyzing...
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ACL
Selective Question Answering under Domain Shift
To avoid giving wrong answers, question answering (QA) models need to know when to abstain from answering. Moreover, users often ask questions that diverge from the model’s training data, making errors more likely and thus abstention more critical. In this work, we propose the setting of selective question answering un...
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2,020
[ "to avoid giving wrong answers , question answering ( qa ) models need to know when to abstain from answering .", "moreover , users often ask questions that diverge from the model ’ s training data , making errors more likely and thus abstention more critical .", "in this work , we propose the setting of select...
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ACL
Domain Adaptive Dialog Generation via Meta Learning
Domain adaptation is an essential task in dialog system building because there are so many new dialog tasks created for different needs every day. Collecting and annotating training data for these new tasks is costly since it involves real user interactions. We propose a domain adaptive dialog generation method based o...
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2,019
[ "domain adaptation is an essential task in dialog system building because there are so many new dialog tasks created for different needs every day .", "collecting and annotating training data for these new tasks is costly since it involves real user interactions .", "we propose a domain adaptive dialog generati...
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ACL
CICERO: A Dataset for Contextualized Commonsense Inference in Dialogues
This paper addresses the problem of dialogue reasoning with contextualized commonsense inference. We curate CICERO, a dataset of dyadic conversations with five types of utterance-level reasoning-based inferences: cause, subsequent event, prerequisite, motivation, and emotional reaction. The dataset contains 53,105 of s...
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2,022
[ "this paper addresses the problem of dialogue reasoning with contextualized commonsense inference .", "we curate cicero , a dataset of dyadic conversations with five types of utterance - level reasoning - based inferences : cause , subsequent event , prerequisite , motivation , and emotional reaction .", "the d...
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ACL
Global Textual Relation Embedding for Relational Understanding
Pre-trained embeddings such as word embeddings and sentence embeddings are fundamental tools facilitating a wide range of downstream NLP tasks. In this work, we investigate how to learn a general-purpose embedding of textual relations, defined as the shortest dependency path between entities. Textual relation embedding...
f2c9dccb266fd9273368252850d646d8
2,019
[ "pre - trained embeddings such as word embeddings and sentence embeddings are fundamental tools facilitating a wide range of downstream nlp tasks .", "in this work , we investigate how to learn a general - purpose embedding of textual relations , defined as the shortest dependency path between entities .", "tex...
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ACL
Adjusting the Precision-Recall Trade-Off with Align-and-Predict Decoding for Grammatical Error Correction
Modern writing assistance applications are always equipped with a Grammatical Error Correction (GEC) model to correct errors in user-entered sentences. Different scenarios have varying requirements for correction behavior, e.g., performing more precise corrections (high precision) or providing more candidates for users...
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[ "modern writing assistance applications are always equipped with a grammatical error correction ( gec ) model to correct errors in user - entered sentences .", "different scenarios have varying requirements for correction behavior , e . g . , performing more precise corrections ( high precision ) or providing mor...
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ACL
Multi-hop Reading Comprehension through Question Decomposition and Rescoring
Multi-hop Reading Comprehension (RC) requires reasoning and aggregation across several paragraphs. We propose a system for multi-hop RC that decomposes a compositional question into simpler sub-questions that can be answered by off-the-shelf single-hop RC models. Since annotations for such decomposition are expensive, ...
e5e2c0e14c1408b28f6f932334efb932
2,019
[ "multi - hop reading comprehension ( rc ) requires reasoning and aggregation across several paragraphs .", "we propose a system for multi - hop rc that decomposes a compositional question into simpler sub - questions that can be answered by off - the - shelf single - hop rc models .", "since annotations for suc...
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ACL
Cross-modal Language Generation using Pivot Stabilization for Web-scale Language Coverage
Cross-modal language generation tasks such as image captioning are directly hurt in their ability to support non-English languages by the trend of data-hungry models combined with the lack of non-English annotations. We investigate potential solutions for combining existing language-generation annotations in English wi...
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2,020
[ "cross - modal language generation tasks such as image captioning are directly hurt in their ability to support non - english languages by the trend of data - hungry models combined with the lack of non - english annotations .", "we investigate potential solutions for combining existing language - generation anno...
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ACL
A unified approach to sentence segmentation of punctuated text in many languages
The sentence is a fundamental unit of text processing. Yet sentences in the wild are commonly encountered not in isolation, but unsegmented within larger paragraphs and documents. Therefore, the first step in many NLP pipelines is sentence segmentation. Despite its importance, this step is the subject of relatively lit...
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2,021
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ACL
New Intent Discovery with Pre-training and Contrastive Learning
New intent discovery aims to uncover novel intent categories from user utterances to expand the set of supported intent classes. It is a critical task for the development and service expansion of a practical dialogue system. Despite its importance, this problem remains under-explored in the literature. Existing approac...
3a1b72322a7b1460c636945d1d260a22
2,022
[ "new intent discovery aims to uncover novel intent categories from user utterances to expand the set of supported intent classes .", "it is a critical task for the development and service expansion of a practical dialogue system .", "despite its importance , this problem remains under - explored in the literatu...
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ACL
A Sweet Rabbit Hole by DARCY: Using Honeypots to Detect Universal Trigger’s Adversarial Attacks
The Universal Trigger (UniTrigger) is a recently-proposed powerful adversarial textual attack method. Utilizing a learning-based mechanism, UniTrigger generates a fixed phrase that, when added to any benign inputs, can drop the prediction accuracy of a textual neural network (NN) model to near zero on a target class. T...
d708af5bf44c3ba54067f1d55df0092c
2,021
[ "the universal trigger ( unitrigger ) is a recently - proposed powerful adversarial textual attack method .", "utilizing a learning - based mechanism , unitrigger generates a fixed phrase that , when added to any benign inputs , can drop the prediction accuracy of a textual neural network ( nn ) model to near zer...
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ACL
PriMock57: A Dataset Of Primary Care Mock Consultations
Recent advances in Automatic Speech Recognition (ASR) have made it possible to reliably produce automatic transcripts of clinician-patient conversations. However, access to clinical datasets is heavily restricted due to patient privacy, thus slowing down normal research practices. We detail the development of a public ...
3f6f04d83615261a704c5035bd224057
2,022
[ "recent advances in automatic speech recognition ( asr ) have made it possible to reliably produce automatic transcripts of clinician - patient conversations .", "however , access to clinical datasets is heavily restricted due to patient privacy , thus slowing down normal research practices .", "we detail the d...
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ACL
Bridging by Word: Image Grounded Vocabulary Construction for Visual Captioning
Image Captioning aims at generating a short description for an image. Existing research usually employs the architecture of CNN-RNN that views the generation as a sequential decision-making process and the entire dataset vocabulary is used as decoding space. They suffer from generating high frequent n-gram with irrelev...
60b1316c4a4c989ab0ebba07738632f5
2,019
[ "image captioning aims at generating a short description for an image .", "existing research usually employs the architecture of cnn - rnn that views the generation as a sequential decision - making process and the entire dataset vocabulary is used as decoding space .", "they suffer from generating high frequen...
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ACL
Scheduled Multi-task Learning for Neural Chat Translation
Neural Chat Translation (NCT) aims to translate conversational text into different languages. Existing methods mainly focus on modeling the bilingual dialogue characteristics (e.g., coherence) to improve chat translation via multi-task learning on small-scale chat translation data. Although the NCT models have achieved...
9f29010944bd19ab9a3843e8429d1dd2
2,022
[ "neural chat translation ( nct ) aims to translate conversational text into different languages .", "existing methods mainly focus on modeling the bilingual dialogue characteristics ( e . g . , coherence ) to improve chat translation via multi - task learning on small - scale chat translation data .", "although...
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ACL
SCD: Self-Contrastive Decorrelation of Sentence Embeddings
In this paper, we propose Self-Contrastive Decorrelation (SCD), a self-supervised approach. Given an input sentence, it optimizes a joint self-contrastive and decorrelation objective. Learning a representation is facilitated by leveraging the contrast arising from the instantiation of standard dropout at different rate...
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ACL
Making Fast Graph-based Algorithms with Graph Metric Embeddings
Graph measures, such as node distances, are inefficient to compute. We explore dense vector representations as an effective way to approximate the same information. We introduce a simple yet efficient and effective approach for learning graph embeddings. Instead of directly operating on the graph structure, our method ...
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2,019
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ACL
Hybrid Semantics for Goal-Directed Natural Language Generation
We consider the problem of generating natural language given a communicative goal and a world description. We ask the question: is it possible to combine complementary meaning representations to scale a goal-directed NLG system without losing expressiveness? In particular, we consider using two meaning representations,...
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ACL
Focus on the Target’s Vocabulary: Masked Label Smoothing for Machine Translation
Label smoothing and vocabulary sharing are two widely used techniques in neural machine translation models. However, we argue that simply applying both techniques can be conflicting and even leads to sub-optimal performance. When allocating smoothed probability, original label smoothing treats the source-side words tha...
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ACL
Generation-Augmented Retrieval for Open-Domain Question Answering
We propose Generation-Augmented Retrieval (GAR) for answering open-domain questions, which augments a query through text generation of heuristically discovered relevant contexts without external resources as supervision. We demonstrate that the generated contexts substantially enrich the semantics of the queries and GA...
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[ "we propose generation - augmented retrieval ( gar ) for answering open - domain questions , which augments a query through text generation of heuristically discovered relevant contexts without external resources as supervision .", "we demonstrate that the generated contexts substantially enrich the semantics of ...
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ACL
PlotCoder: Hierarchical Decoding for Synthesizing Visualization Code in Programmatic Context
Creating effective visualization is an important part of data analytics. While there are many libraries for creating visualization, writing such code remains difficult given the myriad of parameters that users need to provide. In this paper, we propose the new task of synthesizing visualization programs from a combinat...
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ACL
Reinforced Dynamic Reasoning for Conversational Question Generation
This paper investigates a new task named Conversational Question Generation (CQG) which is to generate a question based on a passage and a conversation history (i.e., previous turns of question-answer pairs). CQG is a crucial task for developing intelligent agents that can drive question-answering style conversations o...
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2,019
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ACL
Hypergraph Transformer: Weakly-Supervised Multi-hop Reasoning for Knowledge-based Visual Question Answering
Knowledge-based visual question answering (QA) aims to answer a question which requires visually-grounded external knowledge beyond image content itself. Answering complex questions that require multi-hop reasoning under weak supervision is considered as a challenging problem since i) no supervision is given to the rea...
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ACL
Hierarchical Transformers for Multi-Document Summarization
In this paper, we develop a neural summarization model which can effectively process multiple input documents and distill Transformer architecture with the ability to encode documents in a hierarchical manner. We represent cross-document relationships via an attention mechanism which allows to share information as oppo...
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ACL
Hate Speech Detection Based on Sentiment Knowledge Sharing
The wanton spread of hate speech on the internet brings great harm to society and families. It is urgent to establish and improve automatic detection and active avoidance mechanisms for hate speech. While there exist methods for hate speech detection, they stereotype words and hence suffer from inherently biased traini...
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2,021
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ACL
Towards Comprehensive Patent Approval Predictions:Beyond Traditional Document Classification
Predicting the approval chance of a patent application is a challenging problem involving multiple facets. The most crucial facet is arguably the novelty — 35 U.S. Code § 102 rejects more recent applications that have very similar prior arts. Such novelty evaluations differ the patent approval prediction from conventio...
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ACL
Modeling Morphological Typology for Unsupervised Learning of Language Morphology
This paper describes a language-independent model for fully unsupervised morphological analysis that exploits a universal framework leveraging morphological typology. By modeling morphological processes including suffixation, prefixation, infixation, and full and partial reduplication with constrained stem change rules...
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2,020
[ "this paper describes a language - independent model for fully unsupervised morphological analysis that exploits a universal framework leveraging morphological typology .", "by modeling morphological processes including suffixation , prefixation , infixation , and full and partial reduplication with constrained s...
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ACL
Reranking for Neural Semantic Parsing
Semantic parsing considers the task of transducing natural language (NL) utterances into machine executable meaning representations (MRs). While neural network-based semantic parsers have achieved impressive improvements over previous methods, results are still far from perfect, and cursory manual inspection can easily...
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2,019
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ACL
It is AI’s Turn to Ask Humans a Question: Question-Answer Pair Generation for Children’s Story Books
Existing question answering (QA) techniques are created mainly to answer questions asked by humans. But in educational applications, teachers often need to decide what questions they should ask, in order to help students to improve their narrative understanding capabilities. We design an automated question-answer gener...
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2,022
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ACL
Neural-Symbolic Commonsense Reasoner with Relation Predictors
Commonsense reasoning aims to incorporate sets of commonsense facts, retrieved from Commonsense Knowledge Graphs (CKG), to draw conclusion about ordinary situations. The dynamic nature of commonsense knowledge postulates models capable of performing multi-hop reasoning over new situations. This feature also results in ...
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2,021
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ACL
CoDraw: Collaborative Drawing as a Testbed for Grounded Goal-driven Communication
In this work, we propose a goal-driven collaborative task that combines language, perception, and action. Specifically, we develop a Collaborative image-Drawing game between two agents, called CoDraw. Our game is grounded in a virtual world that contains movable clip art objects. The game involves two players: a Teller...
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2,019
[ "in this work , we propose a goal - driven collaborative task that combines language , perception , and action .", "specifically , we develop a collaborative image - drawing game between two agents , called codraw .", "our game is grounded in a virtual world that contains movable clip art objects .", "the gam...
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ACL
Agreement Prediction of Arguments in Cyber Argumentation for Detecting Stance Polarity and Intensity
In online debates, users express different levels of agreement/disagreement with one another’s arguments and ideas. Often levels of agreement/disagreement are implicit in the text, and must be predicted to analyze collective opinions. Existing stance detection methods predict the polarity of a post’s stance toward a to...
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ACL
Cross-Linguistic Syntactic Evaluation of Word Prediction Models
A range of studies have concluded that neural word prediction models can distinguish grammatical from ungrammatical sentences with high accuracy. However, these studies are based primarily on monolingual evidence from English. To investigate how these models’ ability to learn syntax varies by language, we introduce CLA...
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ACL
The Grammar-Learning Trajectories of Neural Language Models
The learning trajectories of linguistic phenomena in humans provide insight into linguistic representation, beyond what can be gleaned from inspecting the behavior of an adult speaker. To apply a similar approach to analyze neural language models (NLM), it is first necessary to establish that different models are simil...
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ACL
Zero-shot Word Sense Disambiguation using Sense Definition Embeddings
Word Sense Disambiguation (WSD) is a long-standing but open problem in Natural Language Processing (NLP). WSD corpora are typically small in size, owing to an expensive annotation process. Current supervised WSD methods treat senses as discrete labels and also resort to predicting the Most-Frequent-Sense (MFS) for word...
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ACL
Math Word Problem Solving with Explicit Numerical Values
In recent years, math word problem solving has received considerable attention and achieved promising results, but previous methods rarely take numerical values into consideration. Most methods treat the numerical values in the problems as number symbols, and ignore the prominent role of the numerical values in solving...
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ACL
Predicting Depression in Screening Interviews from Latent Categorization of Interview Prompts
Accurately diagnosing depression is difficult– requiring time-intensive interviews, assessments, and analysis. Hence, automated methods that can assess linguistic patterns in these interviews could help psychiatric professionals make faster, more informed decisions about diagnosis. We propose JLPC, a model that analyze...
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ACL
To Test Machine Comprehension, Start by Defining Comprehension
Many tasks aim to measure machine reading comprehension (MRC), often focusing on question types presumed to be difficult. Rarely, however, do task designers start by considering what systems should in fact comprehend. In this paper we make two key contributions. First, we argue that existing approaches do not adequatel...
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ACL
Self-supervised Semantic-driven Phoneme Discovery for Zero-resource Speech Recognition
Phonemes are defined by their relationship to words: changing a phoneme changes the word. Learning a phoneme inventory with little supervision has been a longstanding challenge with important applications to under-resourced speech technology. In this paper, we bridge the gap between the linguistic and statistical defin...
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2,022
[ "phonemes are defined by their relationship to words : changing a phoneme changes the word .", "learning a phoneme inventory with little supervision has been a longstanding challenge with important applications to under - resourced speech technology .", "in this paper , we bridge the gap between the linguistic ...
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ACL
NeuInfer: Knowledge Inference on N-ary Facts
Knowledge inference on knowledge graph has attracted extensive attention, which aims to find out connotative valid facts in knowledge graph and is very helpful for improving the performance of many downstream applications. However, researchers have mainly poured attention to knowledge inference on binary facts. The stu...
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2,020
[ "knowledge inference on knowledge graph has attracted extensive attention , which aims to find out connotative valid facts in knowledge graph and is very helpful for improving the performance of many downstream applications .", "however , researchers have mainly poured attention to knowledge inference on binary f...
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ACL
Cross-Modality Relevance for Reasoning on Language and Vision
This work deals with the challenge of learning and reasoning over language and vision data for the related downstream tasks such as visual question answering (VQA) and natural language for visual reasoning (NLVR). We design a novel cross-modality relevance module that is used in an end-to-end framework to learn the rel...
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2,020
[ "this work deals with the challenge of learning and reasoning over language and vision data for the related downstream tasks such as visual question answering ( vqa ) and natural language for visual reasoning ( nlvr ) .", "we design a novel cross - modality relevance module that is used in an end - to - end frame...
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ACL
Extracting Symptoms and their Status from Clinical Conversations
This paper describes novel models tailored for a new application, that of extracting the symptoms mentioned in clinical conversations along with their status. Lack of any publicly available corpus in this privacy-sensitive domain led us to develop our own corpus, consisting of about 3K conversations annotated by profes...
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2,019
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ACL
Explaining Black Box Predictions and Unveiling Data Artifacts through Influence Functions
Modern deep learning models for NLP are notoriously opaque. This has motivated the development of methods for interpreting such models, e.g., via gradient-based saliency maps or the visualization of attention weights. Such approaches aim to provide explanations for a particular model prediction by highlighting importan...
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ACL
NILE : Natural Language Inference with Faithful Natural Language Explanations
The recent growth in the popularity and success of deep learning models on NLP classification tasks has accompanied the need for generating some form of natural language explanation of the predicted labels. Such generated natural language (NL) explanations are expected to be faithful, i.e., they should correlate well w...
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ACL
TIGS: An Inference Algorithm for Text Infilling with Gradient Search
Text infilling aims at filling in the missing part of a sentence or paragraph, which has been applied to a variety of real-world natural language generation scenarios. Given a well-trained sequential generative model, it is challenging for its unidirectional decoder to generate missing symbols conditioned on the past a...
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2,019
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ACL
Modeling Financial Analysts’ Decision Making via the Pragmatics and Semantics of Earnings Calls
Every fiscal quarter, companies hold earnings calls in which company executives respond to questions from analysts. After these calls, analysts often change their price target recommendations, which are used in equity re- search reports to help investors make deci- sions. In this paper, we examine analysts’ decision ma...
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2,019
[ "every fiscal quarter , companies hold earnings calls in which company executives respond to questions from analysts .", "after these calls , analysts often change their price target recommendations , which are used in equity re - search reports to help investors make deci - sions .", "in this paper , we examin...
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ACL
Incorporating Priors with Feature Attribution on Text Classification
Feature attribution methods, proposed recently, help users interpret the predictions of complex models. Our approach integrates feature attributions into the objective function to allow machine learning practitioners to incorporate priors in model building. To demonstrate the effectiveness our technique, we apply it to...
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2,019
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ACL
Compare to The Knowledge: Graph Neural Fake News Detection with External Knowledge
Nowadays, fake news detection, which aims to verify whether a news document is trusted or fake, has become urgent and important. Most existing methods rely heavily on linguistic and semantic features from the news content, and fail to effectively exploit external knowledge which could help determine whether the news do...
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ACL
FastBERT: a Self-distilling BERT with Adaptive Inference Time
Pre-trained language models like BERT have proven to be highly performant. However, they are often computationally expensive in many practical scenarios, for such heavy models can hardly be readily implemented with limited resources. To improve their efficiency with an assured model performance, we propose a novel spee...
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2,020
[ "pre - trained language models like bert have proven to be highly performant .", "however , they are often computationally expensive in many practical scenarios , for such heavy models can hardly be readily implemented with limited resources .", "to improve their efficiency with an assured model performance , w...
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ACL
A Neural Model for Joint Document and Snippet Ranking in Question Answering for Large Document Collections
Question answering (QA) systems for large document collections typically use pipelines that (i) retrieve possibly relevant documents, (ii) re-rank them, (iii) rank paragraphs or other snippets of the top-ranked documents, and (iv) select spans of the top-ranked snippets as exact answers. Pipelines are conceptually simp...
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[ "question answering ( qa ) systems for large document collections typically use pipelines that ( i ) retrieve possibly relevant documents , ( ii ) re - rank them , ( iii ) rank paragraphs or other snippets of the top - ranked documents , and ( iv ) select spans of the top - ranked snippets as exact answers .", "p...
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ACL
Celebrity Profiling
Celebrities are among the most prolific users of social media, promoting their personas and rallying followers. This activity is closely tied to genuine writing samples, which makes them worthy research subjects in many respects, not least profiling. With this paper we introduce the Webis Celebrity Corpus 2019. For its...
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2,019
[ "celebrities are among the most prolific users of social media , promoting their personas and rallying followers .", "this activity is closely tied to genuine writing samples , which makes them worthy research subjects in many respects , not least profiling .", "with this paper we introduce the webis celebrity ...
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ACL
Neural-Symbolic Solver for Math Word Problems with Auxiliary Tasks
Previous math word problem solvers following the encoder-decoder paradigm fail to explicitly incorporate essential math symbolic constraints, leading to unexplainable and unreasonable predictions. Herein, we propose Neural-Symbolic Solver (NS-Solver) to explicitly and seamlessly incorporate different levels of symbolic...
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2,021
[ "previous math word problem solvers following the encoder - decoder paradigm fail to explicitly incorporate essential math symbolic constraints , leading to unexplainable and unreasonable predictions .", "herein , we propose neural - symbolic solver ( ns - solver ) to explicitly and seamlessly incorporate differe...
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ACL
Imitation Learning for Non-Autoregressive Neural Machine Translation
Non-autoregressive translation models (NAT) have achieved impressive inference speedup. A potential issue of the existing NAT algorithms, however, is that the decoding is conducted in parallel, without directly considering previous context. In this paper, we propose an imitation learning framework for non-autoregressiv...
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2,019
[ "non - autoregressive translation models ( nat ) have achieved impressive inference speedup .", "a potential issue of the existing nat algorithms , however , is that the decoding is conducted in parallel , without directly considering previous context .", "in this paper , we propose an imitation learning framew...
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ACL
Dynamic Sampling Strategies for Multi-Task Reading Comprehension
Building general reading comprehension systems, capable of solving multiple datasets at the same time, is a recent aspirational goal in the research community. Prior work has focused on model architecture or generalization to held out datasets, and largely passed over the particulars of the multi-task learning set up. ...
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2,020
[ "building general reading comprehension systems , capable of solving multiple datasets at the same time , is a recent aspirational goal in the research community .", "prior work has focused on model architecture or generalization to held out datasets , and largely passed over the particulars of the multi - task l...
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ACL
Learning from Miscellaneous Other-Class Words for Few-shot Named Entity Recognition
Few-shot Named Entity Recognition (NER) exploits only a handful of annotations to iden- tify and classify named entity mentions. Pro- totypical network shows superior performance on few-shot NER. However, existing prototyp- ical methods fail to differentiate rich seman- tics in other-class words, which will aggravate o...
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2,021
[ "few - shot named entity recognition ( ner ) exploits only a handful of annotations to identify and classify named entity mentions .", "prototypical network shows superior performance on few - shot ner .", "however , existing prototypical methods fail to differentiate rich semantics in other - class words , whi...
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ACL
Automatic Poetry Generation from Prosaic Text
In the last few years, a number of successful approaches have emerged that are able to adequately model various aspects of natural language. In particular, language models based on neural networks have improved the state of the art with regard to predictive language modeling, while topic models are successful at captur...
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2,020
[ "in the last few years , a number of successful approaches have emerged that are able to adequately model various aspects of natural language .", "in particular , language models based on neural networks have improved the state of the art with regard to predictive language modeling , while topic models are succes...
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ACL
Meta-Learning for Fast Cross-Lingual Adaptation in Dependency Parsing
Meta-learning, or learning to learn, is a technique that can help to overcome resource scarcity in cross-lingual NLP problems, by enabling fast adaptation to new tasks. We apply model-agnostic meta-learning (MAML) to the task of cross-lingual dependency parsing. We train our model on a diverse set of languages to learn...
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2,022
[ "meta - learning , or learning to learn , is a technique that can help to overcome resource scarcity in cross - lingual nlp problems , by enabling fast adaptation to new tasks .", "we apply model - agnostic meta - learning ( maml ) to the task of cross - lingual dependency parsing .", "we train our model on a d...
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ACL
Translate-Train Embracing Translationese Artifacts
Translate-train is a general training approach to multilingual tasks. The key idea is to use the translator of the target language to generate training data to mitigate the gap between the source and target languages. However, its performance is often hampered by the artifacts in the translated texts (translationese). ...
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2,022
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ACL
Why Didn’t You Listen to Me? Comparing User Control of Human-in-the-Loop Topic Models
To address the lack of comparative evaluation of Human-in-the-Loop Topic Modeling (HLTM) systems, we implement and evaluate three contrasting HLTM modeling approaches using simulation experiments. These approaches extend previously proposed frameworks, including constraints and informed prior-based methods. Users shoul...
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2,019
[ "to address the lack of comparative evaluation of human - in - the - loop topic modeling ( hltm ) systems , we implement and evaluate three contrasting hltm modeling approaches using simulation experiments .", "these approaches extend previously proposed frameworks , including constraints and informed prior - bas...
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ACL
SUPERB-SG: Enhanced Speech processing Universal PERformance Benchmark for Semantic and Generative Capabilities
Transfer learning has proven to be crucial in advancing the state of speech and natural language processing research in recent years. In speech, a model pre-trained by self-supervised learning transfers remarkably well on multiple tasks. However, the lack of a consistent evaluation methodology is limiting towards a hol...
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2,022
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ACL
On Faithfulness and Factuality in Abstractive Summarization
It is well known that the standard likelihood training and approximate decoding objectives in neural text generation models lead to less human-like responses for open-ended tasks such as language modeling and story generation. In this paper we have analyzed limitations of these models for abstractive document summariza...
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2,020
[ "it is well known that the standard likelihood training and approximate decoding objectives in neural text generation models lead to less human - like responses for open - ended tasks such as language modeling and story generation .", "in this paper we have analyzed limitations of these models for abstractive doc...
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ACL
Fire Burns, Sword Cuts: Commonsense Inductive Bias for Exploration in Text-based Games
Text-based games (TGs) are exciting testbeds for developing deep reinforcement learning techniques due to their partially observed environments and large action spaces. In these games, the agent learns to explore the environment via natural language interactions with the game simulator. A fundamental challenge in TGs i...
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[ "text - based games ( tgs ) are exciting testbeds for developing deep reinforcement learning techniques due to their partially observed environments and large action spaces .", "in these games , the agent learns to explore the environment via natural language interactions with the game simulator .", "a fundamen...
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ACL
Phonetic and Visual Priors for Decipherment of Informal Romanization
Informal romanization is an idiosyncratic process used by humans in informal digital communication to encode non-Latin script languages into Latin character sets found on common keyboards. Character substitution choices differ between users but have been shown to be governed by the same main principles observed across ...
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2,020
[ "informal romanization is an idiosyncratic process used by humans in informal digital communication to encode non - latin script languages into latin character sets found on common keyboards .", "character substitution choices differ between users but have been shown to be governed by the same main principles obs...
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ACL
Improving Multi-label Malevolence Detection in Dialogues through Multi-faceted Label Correlation Enhancement
A dialogue response is malevolent if it is grounded in negative emotions, inappropriate behavior, or an unethical value basis in terms of content and dialogue acts. The detection of malevolent dialogue responses is attracting growing interest. Current research on detecting dialogue malevolence has limitations in terms ...
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2,022
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ACL
MLQA: Evaluating Cross-lingual Extractive Question Answering
Question answering (QA) models have shown rapid progress enabled by the availability of large, high-quality benchmark datasets. Such annotated datasets are difficult and costly to collect, and rarely exist in languages other than English, making building QA systems that work well in other languages challenging. In orde...
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[ "question answering ( qa ) models have shown rapid progress enabled by the availability of large , high - quality benchmark datasets .", "such annotated datasets are difficult and costly to collect , and rarely exist in languages other than english , making building qa systems that work well in other languages ch...
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ACL
Joint Type Inference on Entities and Relations via Graph Convolutional Networks
We develop a new paradigm for the task of joint entity relation extraction. It first identifies entity spans, then performs a joint inference on entity types and relation types. To tackle the joint type inference task, we propose a novel graph convolutional network (GCN) running on an entity-relation bipartite graph. B...
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2,019
[ "we develop a new paradigm for the task of joint entity relation extraction .", "it first identifies entity spans , then performs a joint inference on entity types and relation types .", "to tackle the joint type inference task , we propose a novel graph convolutional network ( gcn ) running on an entity - rela...
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ACL
Climbing towards NLU: On Meaning, Form, and Understanding in the Age of Data
The success of the large neural language models on many NLP tasks is exciting. However, we find that these successes sometimes lead to hype in which these models are being described as “understanding” language or capturing “meaning”. In this position paper, we argue that a system trained only on form has a priori no wa...
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ACL
A Wind of Change: Detecting and Evaluating Lexical Semantic Change across Times and Domains
We perform an interdisciplinary large-scale evaluation for detecting lexical semantic divergences in a diachronic and in a synchronic task: semantic sense changes across time, and semantic sense changes across domains. Our work addresses the superficialness and lack of comparison in assessing models of diachronic lexic...
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2,019
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ACL
Finding Structural Knowledge in Multimodal-BERT
In this work, we investigate the knowledge learned in the embeddings of multimodal-BERT models. More specifically, we probe their capabilities of storing the grammatical structure of linguistic data and the structure learned over objects in visual data. To reach that goal, we first make the inherent structure of langua...
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2,022
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ACL
Evaluating Gender Bias in Machine Translation
We present the first challenge set and evaluation protocol for the analysis of gender bias in machine translation (MT). Our approach uses two recent coreference resolution datasets composed of English sentences which cast participants into non-stereotypical gender roles (e.g., “The doctor asked the nurse to help her in...
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2,019
[ "we present the first challenge set and evaluation protocol for the analysis of gender bias in machine translation ( mt ) .", "our approach uses two recent coreference resolution datasets composed of english sentences which cast participants into non - stereotypical gender roles ( e . g . , “ the doctor asked the...
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ACL
Meaning to Form: Measuring Systematicity as Information
A longstanding debate in semiotics centers on the relationship between linguistic signs and their corresponding semantics: is there an arbitrary relationship between a word form and its meaning, or does some systematic phenomenon pervade? For instance, does the character bigram ‘gl’ have any systematic relationship to ...
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2,019
[ "a longstanding debate in semiotics centers on the relationship between linguistic signs and their corresponding semantics : is there an arbitrary relationship between a word form and its meaning , or does some systematic phenomenon pervade ?", "for instance , does the character bigram ‘ gl ’ have any systematic ...
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ACL
Lexical Semantic Change Discovery
While there is a large amount of research in the field of Lexical Semantic Change Detection, only few approaches go beyond a standard benchmark evaluation of existing models. In this paper, we propose a shift of focus from change detection to change discovery, i.e., discovering novel word senses over time from the full...
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2,021
[ "while there is a large amount of research in the field of lexical semantic change detection , only few approaches go beyond a standard benchmark evaluation of existing models .", "in this paper , we propose a shift of focus from change detection to change discovery , i . e . , discovering novel word senses over ...
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ACL
Open Domain Question Answering with A Unified Knowledge Interface
The retriever-reader framework is popular for open-domain question answering (ODQA) due to its ability to use explicit knowledge.Although prior work has sought to increase the knowledge coverage by incorporating structured knowledge beyond text, accessing heterogeneous knowledge sources through a unified interface rema...
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2,022
[ "the retriever - reader framework is popular for open - domain question answering ( odqa ) due to its ability to use explicit knowledge .", "although prior work has sought to increase the knowledge coverage by incorporating structured knowledge beyond text , accessing heterogeneous knowledge sources through a uni...
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ACL
Selecting Backtranslated Data from Multiple Sources for Improved Neural Machine Translation
Machine translation (MT) has benefited from using synthetic training data originating from translating monolingual corpora, a technique known as backtranslation. Combining backtranslated data from different sources has led to better results than when using such data in isolation. In this work we analyse the impact that...
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2,020
[ "machine translation ( mt ) has benefited from using synthetic training data originating from translating monolingual corpora , a technique known as backtranslation .", "combining backtranslated data from different sources has led to better results than when using such data in isolation .", "in this work we ana...
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ACL
UniTranSeR: A Unified Transformer Semantic Representation Framework for Multimodal Task-Oriented Dialog System
As a more natural and intelligent interaction manner, multimodal task-oriented dialog system recently has received great attention and many remarkable progresses have been achieved. Nevertheless, almost all existing studies follow the pipeline to first learn intra-modal features separately and then conduct simple featu...
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2,022
[ "as a more natural and intelligent interaction manner , multimodal task - oriented dialog system recently has received great attention and many remarkable progresses have been achieved .", "nevertheless , almost all existing studies follow the pipeline to first learn intra - modal features separately and then con...
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ACL
In Neural Machine Translation, What Does Transfer Learning Transfer?
Transfer learning improves quality for low-resource machine translation, but it is unclear what exactly it transfers. We perform several ablation studies that limit information transfer, then measure the quality impact across three language pairs to gain a black-box understanding of transfer learning. Word embeddings p...
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2,020
[ "transfer learning improves quality for low - resource machine translation , but it is unclear what exactly it transfers .", "we perform several ablation studies that limit information transfer , then measure the quality impact across three language pairs to gain a black - box understanding of transfer learning ....
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ACL
Mention Flags (MF): Constraining Transformer-based Text Generators
This paper focuses on Seq2Seq (S2S) constrained text generation where the text generator is constrained to mention specific words which are inputs to the encoder in the generated outputs. Pre-trained S2S models or a Copy Mechanism are trained to copy the surface tokens from encoders to decoders, but they cannot guarant...
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[ "this paper focuses on seq2seq ( s2s ) constrained text generation where the text generator is constrained to mention specific words which are inputs to the encoder in the generated outputs .", "pre - trained s2s models or a copy mechanism are trained to copy the surface tokens from encoders to decoders , but the...
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ACL
Impact of Evaluation Methodologies on Code Summarization
There has been a growing interest in developing machine learning (ML) models for code summarization tasks, e.g., comment generation and method naming. Despite substantial increase in the effectiveness of ML models, the evaluation methodologies, i.e., the way people split datasets into training, validation, and test set...
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ACL
Neural-DINF: A Neural Network based Framework for Measuring Document Influence
Measuring the scholarly impact of a document without citations is an important and challenging problem. Existing approaches such as Document Influence Model (DIM) are based on dynamic topic models, which only consider the word frequency change. In this paper, we use both frequency changes and word semantic shifts to me...
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2,020
[ "measuring the scholarly impact of a document without citations is an important and challenging problem .", "existing approaches such as document influence model ( dim ) are based on dynamic topic models , which only consider the word frequency change .", "in this paper , we use both frequency changes and word ...
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ACL
An Exploratory Analysis of Multilingual Word-Level Quality Estimation with Cross-Lingual Transformers
Most studies on word-level Quality Estimation (QE) of machine translation focus on language-specific models. The obvious disadvantages of these approaches are the need for labelled data for each language pair and the high cost required to maintain several language-specific models. To overcome these problems, we explore...
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2,021
[ "most studies on word - level quality estimation ( qe ) of machine translation focus on language - specific models .", "the obvious disadvantages of these approaches are the need for labelled data for each language pair and the high cost required to maintain several language - specific models .", "to overcome t...
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ACL
Zero-Shot Semantic Parsing for Instructions
We consider a zero-shot semantic parsing task: parsing instructions into compositional logical forms, in domains that were not seen during training. We present a new dataset with 1,390 examples from 7 application domains (e.g. a calendar or a file manager), each example consisting of a triplet: (a) the application’s in...
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2,019
[ "we consider a zero - shot semantic parsing task : parsing instructions into compositional logical forms , in domains that were not seen during training .", "we present a new dataset with 1 , 390 examples from 7 application domains ( e . g . a calendar or a file manager ) , each example consisting of a triplet : ...
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ACL
Modeling U.S. State-Level Policies by Extracting Winners and Losers from Legislative Texts
Decisions on state-level policies have a deep effect on many aspects of our everyday life, such as health-care and education access. However, there is little understanding of how these policies and decisions are being formed in the legislative process. We take a data-driven approach by decoding the impact of legislatio...
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2,022
[ "decisions on state - level policies have a deep effect on many aspects of our everyday life , such as health - care and education access .", "however , there is little understanding of how these policies and decisions are being formed in the legislative process .", "we take a data - driven approach by decoding...
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ACL
Attend to Medical Ontologies: Content Selection for Clinical Abstractive Summarization
Sequence-to-sequence (seq2seq) network is a well-established model for text summarization task. It can learn to produce readable content; however, it falls short in effectively identifying key regions of the source. In this paper, we approach the content selection problem for clinical abstractive summarization by augme...
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2,020
[ "sequence - to - sequence ( seq2seq ) network is a well - established model for text summarization task .", "it can learn to produce readable content ; however , it falls short in effectively identifying key regions of the source .", "in this paper , we approach the content selection problem for clinical abstra...
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ACL
Rare and Zero-shot Word Sense Disambiguation using Z-Reweighting
Word sense disambiguation (WSD) is a crucial problem in the natural language processing (NLP) community. Current methods achieve decent performance by utilizing supervised learning and large pre-trained language models. However, the imbalanced training dataset leads to poor performance on rare senses and zero-shot sens...
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2,022
[ "word sense disambiguation ( wsd ) is a crucial problem in the natural language processing ( nlp ) community .", "current methods achieve decent performance by utilizing supervised learning and large pre - trained language models .", "however , the imbalanced training dataset leads to poor performance on rare s...
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ACL
Assessing Emoji Use in Modern Text Processing Tools
Emojis have become ubiquitous in digital communication, due to their visual appeal as well as their ability to vividly convey human emotion, among other factors. This also leads to an increased need for systems and tools to operate on text containing emojis. In this study, we assess this support by considering test set...
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2,021
[ "emojis have become ubiquitous in digital communication , due to their visual appeal as well as their ability to vividly convey human emotion , among other factors .", "this also leads to an increased need for systems and tools to operate on text containing emojis .", "in this study , we assess this support by ...
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ACL
A Unified Generative Framework for Various NER Subtasks
Named Entity Recognition (NER) is the task of identifying spans that represent entities in sentences. Whether the entity spans are nested or discontinuous, the NER task can be categorized into the flat NER, nested NER, and discontinuous NER subtasks. These subtasks have been mainly solved by the token-level sequence la...
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2,021
[ "named entity recognition ( ner ) is the task of identifying spans that represent entities in sentences .", "whether the entity spans are nested or discontinuous , the ner task can be categorized into the flat ner , nested ner , and discontinuous ner subtasks .", "these subtasks have been mainly solved by the t...
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ACL
Cross-language Sentence Selection via Data Augmentation and Rationale Training
This paper proposes an approach to cross-language sentence selection in a low-resource setting. It uses data augmentation and negative sampling techniques on noisy parallel sentence data to directly learn a cross-lingual embedding-based query relevance model. Results show that this approach performs as well as or bette...
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ACL
Text Categorization by Learning Predominant Sense of Words as Auxiliary Task
Distributions of the senses of words are often highly skewed and give a strong influence of the domain of a document. This paper follows the assumption and presents a method for text categorization by leveraging the predominant sense of words depending on the domain, i.e., domain-specific senses. The key idea is that t...
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ACL
USR: An Unsupervised and Reference Free Evaluation Metric for Dialog Generation
The lack of meaningful automatic evaluation metrics for dialog has impeded open-domain dialog research. Standard language generation metrics have been shown to be ineffective for evaluating dialog models. To this end, this paper presents USR, an UnSupervised and Reference-free evaluation metric for dialog. USR is a ref...
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ACL
Learning to Reason Deductively: Math Word Problem Solving as Complex Relation Extraction
Solving math word problems requires deductive reasoning over the quantities in the text. Various recent research efforts mostly relied on sequence-to-sequence or sequence-to-tree models to generate mathematical expressions without explicitly performing relational reasoning between quantities in the given context. While...
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ACL
QAConv: Question Answering on Informative Conversations
This paper introduces QAConv, a new question answering (QA) dataset that uses conversations as a knowledge source. We focus on informative conversations, including business emails, panel discussions, and work channels. Unlike open-domain and task-oriented dialogues, these conversations are usually long, complex, asynch...
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