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Knowledge base provides a potential way to improve the intelligence of information retrieval (IR) systems, for that knowledge base has numerous relations between entities which can help the IR systems to conduct inference from one entity to…

计算与语言 · 计算机科学 2019-07-29 Hai Ye , Zhunchen Luo

Scientific Natural Language Inference (NLI) is the task of predicting the semantic relation between a pair of sentences extracted from research articles. The automatic annotation method based on distant supervision for the training set of…

计算与语言 · 计算机科学 2024-06-24 Mobashir Sadat , Cornelia Caragea

Distantly-supervised relation extraction (RE) is an effective method to scale RE to large corpora but suffers from noisy labels. Existing approaches try to alleviate noise through multi-instance learning and by providing additional…

计算与语言 · 计算机科学 2021-02-03 Despina Christou , Grigorios Tsoumakas

Joint entity and relation extraction is a process that identifies entity pairs and their relations using a single model. We focus on the problem of joint extraction in distantly-labeled data, whose labels are generated by aligning entity…

计算与语言 · 计算机科学 2024-05-28 Yufei Li , Xiao Yu , Yanghong Guo , Yanchi Liu , Haifeng Chen , Cong Liu

Recent years have seen rapid development in Information Extraction, as well as its subtask, Relation Extraction. Relation Extraction is able to detect semantic relations between entities in sentences. Currently, many efficient approaches…

计算与语言 · 计算机科学 2024-03-19 Zhuang Li

Distant supervision based methods for entity and relation extraction have received increasing popularity due to the fact that these methods require light human annotation efforts. In this paper, we consider the problem of \textit{shifted…

计算与语言 · 计算机科学 2020-04-22 Daoyuan Chen , Yaliang Li , Kai Lei , Ying Shen

Relation extraction aims to extract relational facts from sentences. Previous models mainly rely on manually labeled datasets, seed instances or human-crafted patterns, and distant supervision. However, the human annotation is expensive,…

机器学习 · 计算机科学 2019-08-23 Ningyu Zhang , Shumin Deng , Zhanlin Sun , Jiaoyan Chen , Wei Zhang , Huajun Chen

Distant supervision is a widely applied approach to automatic training of relation extraction systems and has the advantage that it can generate large amounts of labelled data with minimal effort. However, this data may contain errors and…

计算与语言 · 计算机科学 2015-09-15 Roland Roller , Eneko Agirre , Aitor Soroa , Mark Stevenson

Many natural language processing tasks solely rely on sparse dependencies between a few tokens in a sentence. Soft attention mechanisms show promising performance in modeling local/global dependencies by soft probabilities between every two…

计算与语言 · 计算机科学 2018-07-06 Tao Shen , Tianyi Zhou , Guodong Long , Jing Jiang , Sen Wang , Chengqi Zhang

Attention mechanisms are often used in deep neural networks for distantly supervised relation extraction (DS-RE) to distinguish valid from noisy instances. However, traditional 1-D vector attention models are insufficient for the learning…

计算与语言 · 计算机科学 2018-09-05 Jinhua Du , Jingguang Han , Andy Way , Dadong Wan

We present a novel framework to deal with relation extraction tasks in cases where there is complete lack of supervision, either in the form of gold annotations, or relations from a knowledge base. Our approach leverages syntactic parsing…

机器学习 · 计算机科学 2019-11-04 Yannis Papanikolaou , Ian Roberts , Andrea Pierleoni

In recent years, distantly-supervised relation extraction has achieved a certain success by using deep neural networks. Distant Supervision (DS) can automatically generate large-scale annotated data by aligning entity pairs from Knowledge…

计算与语言 · 计算机科学 2020-11-02 Tong Zhu , Haitao Wang , Junjie Yu , Xiabing Zhou , Wenliang Chen , Wei Zhang , Min Zhang

Distant supervision (DS) has been widely used to generate auto-labeled data for sentence-level relation extraction (RE), which improves RE performance. However, the existing success of DS cannot be directly transferred to the more…

计算与语言 · 计算机科学 2020-11-10 Chaojun Xiao , Yuan Yao , Ruobing Xie , Xu Han , Zhiyuan Liu , Maosong Sun , Fen Lin , Leyu Lin

A principal barrier to training temporal relation extraction models in new domains is the lack of varied, high quality examples and the challenge of collecting more. We present a method of automatically collecting distantly-supervised…

计算与语言 · 计算机科学 2021-09-16 Xinyu Zhao , Shih-ting Lin , Greg Durrett

Text-based person search aims to retrieve the specified person images given a textual description. The key to tackling such a challenging task is to learn powerful multi-modal representations. Towards this, we propose a Relation and…

计算机视觉与模式识别 · 计算机科学 2023-12-04 Yang Bai , Min Cao , Daming Gao , Ziqiang Cao , Chen Chen , Zhenfeng Fan , Liqiang Nie , Min Zhang

Distant supervision can effectively label data for relation extraction, but suffers from the noise labeling problem. Recent works mainly perform soft bag-level noise reduction strategies to find the relatively better samples in a sentence…

计算与语言 · 计算机科学 2018-05-28 Pengda Qin , Weiran Xu , William Yang Wang

We propose a multi-task, probabilistic approach to facilitate distantly supervised relation extraction by bringing closer the representations of sentences that contain the same Knowledge Base pairs. To achieve this, we bias the latent space…

计算与语言 · 计算机科学 2021-04-19 Fenia Christopoulou , Makoto Miwa , Sophia Ananiadou

Relation Extraction (RE) is a pivotal task in automatically extracting structured information from unstructured text. In this paper, we present a multi-faceted approach that integrates representative examples and through co-set expansion.…

计算与语言 · 计算机科学 2023-08-24 Yerong Li , Roxana Girju

Relation extraction (RE) plays an important role in extracting knowledge from unstructured text but requires a large amount of labeled corpus. To reduce the expensive annotation efforts, semisupervised learning aims to leverage both labeled…

计算与语言 · 计算机科学 2021-03-16 Yusen Lin

We introduce a novel graph-based framework for alleviating key challenges in distantly-supervised relation extraction and demonstrate its effectiveness in the challenging and important domain of biomedical data. Specifically, we propose a…

机器学习 · 计算机科学 2024-04-08 Hao Zhang , Yang Liu , Xiaoyan Liu , Tianming Liang , Gaurav Sharma , Liang Xue , Maozu Guo