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To disclose overlapped multiple relations from a sentence still keeps challenging. Most current works in terms of neural models inconveniently assuming that each sentence is explicitly mapped to a relation label, cannot handle multiple…

计算与语言 · 计算机科学 2018-11-13 Xinsong Zhang , Pengshuai Li , Weijia Jia , Hai Zhao

Neural relation extraction discovers semantic relations between entities from unstructured text using deep learning methods. In this study, we present a comprehensive review of methods on neural network based relation extraction. We discuss…

计算与语言 · 计算机科学 2020-07-09 Mehmet Aydar , Ozge Bozal , Furkan Ozbay

With an exponential explosive growth of various digital text information, it is challenging to efficiently obtain specific knowledge from massive unstructured text information. As one basic task for natural language processing (NLP),…

计算与语言 · 计算机科学 2020-03-27 Yan Xiao , Yaochu Jin , Ran Cheng , Kuangrong Hao

Biomedical Information Extraction is an exciting field at the crossroads of Natural Language Processing, Biology and Medicine. It encompasses a variety of different tasks that require application of state-of-the-art NLP techniques, such as…

计算与语言 · 计算机科学 2017-05-17 Surag Nair

Benchmarking drug efficacy is a critical step in clinical trial design and planning. The challenge is that much of the data on efficacy endpoints is stored in scientific papers in free text form, so extraction of such data is currently a…

Relation extraction (RE) enables the construction of structured knowledge for many downstream applications. While large language models (LLMs) have shown great promise in this task, they often struggle to reliably determine whether a…

计算与语言 · 计算机科学 2026-02-03 Yupei Yang , Fan Feng , Lin Yang , Wanxi Deng , Lin Qu , Biwei Huang , Shikui Tu , Lei Xu

Relation extraction (RE) involves identifying the relations between entities from underlying content. RE serves as the foundation for many natural language processing (NLP) and information retrieval applications, such as knowledge graph…

计算与语言 · 计算机科学 2024-06-25 Xiaoyan Zhao , Yang Deng , Min Yang , Lingzhi Wang , Rui Zhang , Hong Cheng , Wai Lam , Ying Shen , Ruifeng Xu

Existing research studies on cross-sentence relation extraction in long-form multi-party conversations aim to improve relation extraction without considering the explainability of such methods. This work addresses that gap by focusing on…

计算与语言 · 计算机科学 2022-10-20 Alon Albalak , Varun Embar , Yi-Lin Tuan , Lise Getoor , William Yang Wang

Distant Supervision for Relation Extraction uses heuristically aligned text data with an existing knowledge base as training data. The unsupervised nature of this technique allows it to scale to web-scale relation extraction tasks, at the…

计算与语言 · 计算机科学 2017-10-30 Tushar Nagarajan , Sharmistha , Partha Talukdar

Dialogue relation extraction (DRE) aims to extract relations between two arguments within a dialogue, which is more challenging than standard RE due to the higher person pronoun frequency and lower information density in dialogues. However,…

计算与语言 · 计算机科学 2024-04-30 Guozheng Li , Zijie Xu , Ziyu Shang , Jiajun Liu , Ke Ji , Yikai Guo

Open Information Extraction (OpenIE) aims to extract structured relational tuples (subject, relation, object) from sentences and plays critical roles for many downstream NLP applications. Existing solutions perform extraction at sentence…

计算与语言 · 计算机科学 2021-05-12 Kuicai Dong , Yilin Zhao , Aixin Sun , Jung-Jae Kim , Xiaoli Li

We present a joint model for entity-level relation extraction from documents. In contrast to other approaches - which focus on local intra-sentence mention pairs and thus require annotations on mention level - our model operates on entity…

计算与语言 · 计算机科学 2021-12-06 Markus Eberts , Adrian Ulges

Relation extraction (RE) is the core NLP task of inferring semantic relationships between entities from text. Standard supervised RE techniques entail training modules to tag tokens comprising entity spans and then predict the relationship…

计算与语言 · 计算机科学 2024-07-17 Somin Wadhwa , Silvio Amir , Byron C. Wallace

Systematic comparison of methods for relation extraction (RE) is difficult because many experiments in the field are not described precisely enough to be completely reproducible and many papers fail to report ablation studies that would…

计算与语言 · 计算机科学 2021-07-14 Geeticka Chauhan , Matthew B. A. McDermott , Peter Szolovits

State-of-the-art methods for relation extraction consider the sentential context by modeling the entire sentence. However, syntactic indicators, certain phrases or words like prepositions that are more informative than other words and may…

计算与语言 · 计算机科学 2019-12-05 Qiongxing Tao , Xiangfeng Luo , Hao Wang

Named Entity Recognition (NER) is a fundamental problem in natural language processing (NLP). However, the task of extracting longer entity spans (e.g., awards) from extended texts (e.g., homepages) is barely explored. Current NER methods…

计算与语言 · 计算机科学 2025-02-12 Yelin Chen , Fanjin Zhang , Jie Tang

Extracting relations from text corpora is an important task in text mining. It becomes particularly challenging when focusing on weakly-supervised relation extraction, that is, utilizing a few relation instances (i.e., a pair of entities…

计算与语言 · 计算机科学 2017-12-27 Meng Qu , Xiang Ren , Yu Zhang , Jiawei Han

Document Understanding is an evolving field in Natural Language Processing (NLP). In particular, visual and spatial features are essential in addition to the raw text itself and hence, several multimodal models were developed in the field…

计算与语言 · 计算机科学 2024-04-18 Wiam Adnan , Joel Tang , Yassine Bel Khayat Zouggari , Seif Edinne Laatiri , Laurent Lam , Fabien Caspani

Owing to the exponential rise in the electronic medical records, information extraction in this domain is becoming an important area of research in recent years. Relation extraction between the medical concepts such as medical problem,…

计算与语言 · 计算机科学 2019-03-26 Dhanachandra Ningthoujam , Shweta Yadav , Pushpak Bhattacharyya , Asif Ekbal

Relation extraction represents a fundamental component in the process of creating knowledge graphs, among other applications. Large language models (LLMs) have been adopted as a promising tool for relation extraction, both in supervised and…

计算与语言 · 计算机科学 2026-04-13 Paolo Gajo , Domenic Rosati , Hassan Sajjad , Alberto Barrón-Cedeño