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Dependency parsing is an essential task in NLP, and the quality of dependency parsers is crucial for many downstream tasks. Parsers' quality often varies depending on the domain and the language involved. Therefore, it is essential to…

Computation and Language · Computer Science 2024-04-04 Adithya Kulkarni , Oliver Eulenstein , Qi Li

Modern graph-based syntactic dependency parsers operate by predicting, for each token within a sentence, a probability distribution over its possible syntactic heads (i.e., all other tokens) and then extracting a maximum spanning tree from…

Computation and Language · Computer Science 2021-06-16 Stefan Grünewald

Recent advancements in pre-trained language models (PLMs) have demonstrated that these models possess some degree of syntactic awareness. To leverage this knowledge, we propose a novel chart-based method for extracting parse trees from…

Computation and Language · Computer Science 2023-06-02 Jiaxi Li , Wei Lu

We present a transition-based dependency parser that uses a convolutional neural network to compose word representations from characters. The character composition model shows great improvement over the word-lookup model, especially for…

Computation and Language · Computer Science 2017-06-01 Xiang Yu , Ngoc Thang Vu

This thesis presents a broad-coverage probabilistic top-down parser, and its application to the problem of language modeling for speech recognition. The parser builds fully connected derivations incrementally, in a single pass from…

Computation and Language · Computer Science 2007-05-23 Brian Roark

Learning vector representations for programs is a critical step in applying deep learning techniques for program understanding tasks. Various neural network models are proposed to learn from tree-structured program representations, e.g.,…

Software Engineering · Computer Science 2023-01-10 Wenhan Wang , Kechi Zhang , Ge Li , Shangqing Liu , Anran Li , Zhi Jin , Yang Liu

We propose a procedure to build a decision tree which approximates the performance of complex machine learning models. This single approximation tree can be used to interpret and simplify the predicting pattern of random forests (RFs) and…

Methodology · Statistics 2016-10-31 Yichen Zhou , Giles Hooker

For over thirty years, researchers have developed and analyzed methods for latent tree induction as an approach for unsupervised syntactic parsing. Nonetheless, modern systems still do not perform well enough compared to their supervised…

Computation and Language · Computer Science 2021-11-03 Zhiyang Xu , Andrew Drozdov , Jay Yoon Lee , Tim O'Gorman , Subendhu Rongali , Dylan Finkbeiner , Shilpa Suresh , Mohit Iyyer , Andrew McCallum

We present a bracketing-based encoding that can be used to represent any 2-planar dependency tree over a sentence of length n as a sequence of n labels, hence providing almost total coverage of crossing arcs in sequence labeling parsing.…

Computation and Language · Computer Science 2021-03-24 Michalina Strzyz , David Vilares , Carlos Gómez-Rodríguez

We define a mapping from transition-based parsing algorithms that read sentences from left to right to sequence labeling encodings of syntactic trees. This not only establishes a theoretical relation between transition-based parsing and…

Computation and Language · Computer Science 2020-11-03 Carlos Gómez-Rodríguez , Michalina Strzyz , David Vilares

Many tasks in natural language processing, ranging from machine translation to question answering, can be reduced to the problem of matching two sentences or more generally two short texts. We propose a new approach to the problem, called…

Computation and Language · Computer Science 2015-06-15 Mingxuan Wang , Zhengdong Lu , Hang Li , Qun Liu

When trained on language data, do transformers learn some arbitrary computation that utilizes the full capacity of the architecture or do they learn a simpler, tree-like computation, hypothesized to underlie compositional meaning systems…

Computation and Language · Computer Science 2022-11-07 Shikhar Murty , Pratyusha Sharma , Jacob Andreas , Christopher D. Manning

The dependency tree of a natural language sentence can capture the interactions between semantics and words. However, it is unclear whether those methods which exploit such dependency information for semantic parsing can be combined to…

Computation and Language · Computer Science 2021-12-28 Defeng Xie , Jianmin Ji , Jiafei Xu , Ran Ji

Learning the Markov network structure from data is a problem that has received considerable attention in machine learning, and in many other application fields. This work focuses on a particular approach for this purpose called…

Artificial Intelligence · Computer Science 2013-07-16 Alejandro Edera , Federico Schlüter , Facundo Bromberg

Learning representation for source code is a foundation of many program analysis tasks. In recent years, neural networks have already shown success in this area, but most existing models did not make full use of the unique structural…

Software Engineering · Computer Science 2021-04-02 Wenhan Wang , Ge Li , Sijie Shen , Xin Xia , Zhi Jin

With the development of the online education system, personalized education recommendation has played an essential role. In this paper, we focus on developing path recommendation systems that aim to generating and recommending an entire…

Information Retrieval · Computer Science 2023-06-08 Xianyu Chen , Jian Shen , Wei Xia , Jiarui Jin , Yakun Song , Weinan Zhang , Weiwen Liu , Menghui Zhu , Ruiming Tang , Kai Dong , Dingyin Xia , Yong Yu

We present a semantic parser for Abstract Meaning Representations which learns to parse strings into tree representations of the compositional structure of an AMR graph. This allows us to use standard neural techniques for supertagging and…

Computation and Language · Computer Science 2021-06-10 Jonas Groschwitz , Matthias Lindemann , Meaghan Fowlie , Mark Johnson , Alexander Koller

Recurrent neural networks (RNNs) are widely used as a memory model for sequence-related problems. Many variants of RNN have been proposed to solve the gradient problems of training RNNs and process long sequences. Although some classical…

Neural and Evolutionary Computing · Computer Science 2020-05-29 Chenpeng Zhang , Shuai Li , Mao Ye , Ce Zhu , Xue Li

How to predict precise user preference and how to make efficient retrieval from a big corpus are two major challenges of large-scale industrial recommender systems. In tree-based methods, a tree structure T is adopted as index and each item…

Information Retrieval · Computer Science 2021-09-23 Daqing Chang , Jintao Liu , Ziru Xu , Han Li , Han Zhu , Xiaoqiang Zhu

Inter-sentence relation extraction deals with a number of complex semantic relationships in documents, which require local, non-local, syntactic and semantic dependencies. Existing methods do not fully exploit such dependencies. We present…

Computation and Language · Computer Science 2019-06-12 Sunil Kumar Sahu , Fenia Christopoulou , Makoto Miwa , Sophia Ananiadou