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In recent years, neural networks have proven to be effective in Chinese word segmentation. However, this promising performance relies on large-scale training data. Neural networks with conventional architectures cannot achieve the desired…

Computation and Language · Computer Science 2017-11-07 Jingjing Xu , Xu Sun , Sujian Li , Xiaoyan Cai , Bingzhen Wei

Structured prediction is used in areas such as computer vision and natural language processing to predict structured outputs such as segmentations or parse trees. In these settings, prediction is performed by MAP inference or, equivalently,…

Machine Learning · Statistics 2016-04-28 Ofer Meshi , Mehrdad Mahdavi , Adrian Weller , David Sontag

Learning a causal directed acyclic graph from data is a challenging task that involves solving a combinatorial problem for which the solution is not always identifiable. A new line of work reformulates this problem as a continuous…

Machine Learning · Computer Science 2020-11-05 Philippe Brouillard , Sébastien Lachapelle , Alexandre Lacoste , Simon Lacoste-Julien , Alexandre Drouin

Relation extraction is an important but challenging task that aims to extract all hidden relational facts from the text. With the development of deep language models, relation extraction methods have achieved good performance on various…

Computation and Language · Computer Science 2022-08-17 Sheng Zhang , Patrick Ng , Zhiguo Wang , Bing Xiang

Learning causal and temporal relationships between events is an important step towards deeper story and commonsense understanding. Though there are abundant datasets annotated with event relations for story comprehension, many have no…

Computation and Language · Computer Science 2019-04-29 Rujun Han , Mengyue Liang , Bashar Alhafni , Nanyun Peng

Ensemble modeling has been widely used to solve complex problems as it helps to improve overall performance and generalization. In this paper, we propose a novel TemporalAugmenter approach based on ensemble modeling for augmenting the…

Machine Learning · Computer Science 2024-01-17 Nelly Elsayed , Constantinos L. Zekios , Navid Asadizanjani , Zag ElSayed

Event extraction (EE) is one of the core information extraction tasks, whose purpose is to automatically identify and extract information about incidents and their actors from texts. This may be beneficial to several domains such as…

Machine Learning · Computer Science 2020-10-29 Ali Balali , Masoud Asadpour , Ricardo Campos , Adam Jatowt

As larger deep learning models are hard to interpret, there has been a recent focus on generating explanations of these black-box models. In contrast, we may have apriori explanations of how models should behave. In this paper, we formalize…

Machine Learning · Computer Science 2023-12-27 Rattana Pukdee , Dylan Sam , J. Zico Kolter , Maria-Florina Balcan , Pradeep Ravikumar

Event Extraction plays an important role in information-extraction to understand the world. Event extraction could be split into two subtasks: one is event trigger extraction, the other is event arguments extraction. However, the F-Score of…

Computation and Language · Computer Science 2020-06-04 Zhigang Kan , Linbo Qiao , Sen Yang , Feng Liu , Feng Huang

Event mentions in text correspond to real-world events of varying degrees of granularity. The task of subevent detection aims to resolve this granularity issue, recognizing the membership of multi-granular events in event complexes. Since…

Computation and Language · Computer Science 2021-09-15 Haoyu Wang , Hongming Zhang , Muhao Chen , Dan Roth

Event extraction (EE), which acquires structural event knowledge from texts, can be divided into two sub-tasks: event type classification and element extraction (namely identifying triggers and arguments under different role patterns). As…

Computation and Language · Computer Science 2022-08-19 Qian Li , Shu Guo , Jia Wu , Jianxin Li , Jiawei Sheng , Lihong Wang , Xiaohan Dong , Hao Peng

We propose a data-driven technique to automatically learn contextual uncertainty sets in robust optimization, resulting in excellent worst-case and average-case performance while also guaranteeing constraint satisfaction. Our method…

Optimization and Control · Mathematics 2025-06-25 Irina Wang , Bart Van Parys , Bartolomeo Stellato

Extracting temporal relations (e.g., before, after, and simultaneous) among events is crucial to natural language understanding. One of the key challenges of this problem is that when the events of interest are far away in text, the context…

Computation and Language · Computer Science 2022-10-26 Shuaicheng Zhang , Lifu Huang , Qiang Ning

Inferring missing facts in temporal knowledge graphs is a critical task and has been widely explored. Extrapolation in temporal reasoning tasks is more challenging and gradually attracts the attention of researchers since no direct history…

Machine Learning · Computer Science 2021-11-04 Mengnan Zhao , Lihe Zhang , Yuqiu Kong , Baocai Yin

Document-level event extraction is a long-standing challenging information retrieval problem involving a sequence of sub-tasks: entity extraction, event type judgment, and event type-specific multi-event extraction. However, addressing the…

Computation and Language · Computer Science 2023-07-03 Qizhi Wan , Changxuan Wan , Keli Xiao , Hui Xiong , Dexi Liu , Xiping Liu

The popularity of deep learning techniques renewed the interest in neural architectures able to process complex structures that can be represented using graphs, inspired by Graph Neural Networks (GNNs). We focus our attention on the…

Machine Learning · Computer Science 2021-09-02 Matteo Tiezzi , Giuseppe Marra , Stefano Melacci , Marco Maggini

Relation extraction task is a crucial and challenging aspect of Natural Language Processing. Several methods have surfaced as of late, exhibiting notable performance in addressing the task; however, most of these approaches rely on vast…

Computation and Language · Computer Science 2023-08-25 Fréjus A. A. Laleye , Loïc Rakotoson , Sylvain Massip

In this work, we aim at equipping pre-trained language models with structured knowledge. We present two self-supervised tasks learning over raw text with the guidance from knowledge graphs. Building upon entity-level masked language models,…

Computation and Language · Computer Science 2020-04-30 Tao Shen , Yi Mao , Pengcheng He , Guodong Long , Adam Trischler , Weizhu Chen

Ability of deep networks to extract high level features and of recurrent networks to perform time-series inference have been studied. In view of universality of one hidden layer network at approximating functions under weak constraints, the…

Neural and Evolutionary Computing · Computer Science 2014-12-19 Sharat C. Prasad , Piyush Prasad

Relation Extraction (RE) is one of the fundamental tasks in Information Extraction and Natural Language Processing. Dependency trees have been shown to be a very useful source of information for this task. The current deep learning models…

Computation and Language · Computer Science 2019-07-09 Amir Pouran Ben Veyseh , Thien Huu Nguyen , Dejing Dou