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In relation extraction with distant supervision, noisy labels make it difficult to train quality models. Previous neural models addressed this problem using an attention mechanism that attends to sentences that are likely to express the…

计算与语言 · 计算机科学 2019-04-09 Iz Beltagy , Kyle Lo , Waleed Ammar

Relation extraction in the biomedical domain is a challenging task due to a lack of labeled data and a long-tail distribution of fact triples. Many works leverage distant supervision which automatically generates labeled data by pairing a…

Relation extraction is essential for extracting and understanding biographical information in the context of digital humanities and related subjects. There is a growing interest in the community to build datasets capable of training machine…

计算与语言 · 计算机科学 2024-03-28 Alistair Plum , Tharindu Ranasinghe , Christoph Purschke

Mining relationships between treatment(s) and medical problem(s) is vital in the biomedical domain. This helps in various applications, such as decision support system, safety surveillance, and new treatment discovery. We propose a deep…

机器学习 · 计算机科学 2018-07-02 Veera Raghavendra Chikka , Kamalakar Karlapalem

We introduce ChemDisGene, a new dataset for training and evaluating multi-class multi-label document-level biomedical relation extraction models. Our dataset contains 80k biomedical research abstracts labeled with mentions of chemicals,…

计算与语言 · 计算机科学 2022-04-15 Dongxu Zhang , Sunil Mohan , Michaela Torkar , Andrew McCallum

Successful biomedical relation extraction can provide evidence to researchers and clinicians about possible unknown associations between biomedical entities, advancing the current knowledge we have about those entities and their inherent…

信息检索 · 计算机科学 2020-04-22 Diana Sousa , Francisco M. Couto

Knowledge discovery is hindered by the increasing volume of publications and the scarcity of extensive annotated data. To tackle the challenge of information overload, it is essential to employ automated methods for knowledge extraction and…

人工智能 · 计算机科学 2025-04-15 Christos Theodoropoulos , Andrei Catalin Coman , James Henderson , Marie-Francine Moens

Document-Level Biomedical Relation Extraction (Bio-RE) aims to identify relations between biomedical entities within extensive texts, serving as a crucial subfield of biomedical text mining. Existing Bio-RE methods struggle with…

计算与语言 · 计算机科学 2025-01-10 Yufei Shang , Yanrong Guo , Shijie Hao , Richang Hong

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

Biomedical relation extraction (RE) is the task of automatically identifying and characterizing relations between biomedical concepts from free text. RE is a central task in biomedical natural language processing (NLP) research and plays a…

计算与语言 · 计算机科学 2023-06-21 Po-Ting Lai , Chih-Hsuan Wei , Ling Luo , Qingyu Chen , Zhiyong Lu

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

Relation Extraction (RE) has attracted increasing attention, but current RE evaluation is limited to in-domain evaluation setups. Little is known on how well a RE system fares in challenging, but realistic out-of-distribution evaluation…

计算与语言 · 计算机科学 2022-10-19 Elisa Bassignana , Barbara Plank

Distantly supervision automatically generates plenty of training samples for relation extraction. However, it also incurs two major problems: noisy labels and imbalanced training data. Previous works focus more on reducing wrongly labeled…

计算与语言 · 计算机科学 2021-05-24 Chenhao Xie , Jiaqing Liang , Jingping Liu , Chengsong Huang , Wenhao Huang , Yanghua Xiao

Clinical studies often require understanding elements of a patient's narrative that exist only in free text clinical notes. To transform notes into structured data for downstream use, these elements are commonly extracted and normalized to…

计算与语言 · 计算机科学 2020-08-03 Monica Agrawal , Chloe O'Connell , Yasmin Fatemi , Ariel Levy , David Sontag

Digital libraries that maintain extensive textual collections may want to further enrich their content for certain downstream applications, e.g., building knowledge graphs, semantic enrichment of documents, or implementing novel access…

数字图书馆 · 计算机科学 2024-11-21 Hermann Kroll , Pascal Sackhoff , Bill Matthias Thang , Maha Ksouri , Wolf-Tilo Balke

Using different sources of information to support automated extracting of relations between biomedical concepts contributes to the development of our understanding of biological systems. The primary comprehensive source of these relations…

计算与语言 · 计算机科学 2020-09-21 Diana Sousa , Andre Lamurias , Francisco M. Couto

Relation extraction (RE) has been extensively studied due to its importance in real-world applications such as knowledge base construction and question answering. Most of the existing works train the models on either distantly supervised…

计算与语言 · 计算机科学 2020-11-25 Woohwan Jung , Kyuseok Shim

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

Distant supervision has been a widely used method for neural relation extraction for its convenience of automatically labeling datasets. However, existing works on distantly supervised relation extraction suffer from the low quality of test…

计算与语言 · 计算机科学 2020-10-20 Pengshuai Li , Xinsong Zhang , Weijia Jia , Wei Zhao

Relation Extraction is an important task in Information Extraction which deals with identifying semantic relations between entity mentions. Traditionally, relation extraction is carried out after entity extraction in a "pipeline" fashion,…

计算与语言 · 计算机科学 2021-03-11 Sachin Pawar , Pushpak Bhattacharyya , Girish K. Palshikar