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Document-level relation extraction (DocRE) models generally use graph networks to implicitly model the reasoning skill (i.e., pattern recognition, logical reasoning, coreference reasoning, etc.) related to the relation between one entity…

Computation and Language · Computer Science 2021-06-04 Wang Xu , Kehai Chen , Tiejun Zhao

Extracting entities and relations from unstructured text has attracted increasing attention in recent years but remains challenging, due to the intrinsic difficulty in identifying overlapping relations with shared entities. Prior works show…

Computation and Language · Computer Science 2020-10-27 Yucheng Wang , Bowen Yu , Yueyang Zhang , Tingwen Liu , Hongsong Zhu , Limin Sun

Joint entity-relation extraction (JERE) identifies both entities and their relationships simultaneously. Traditional machine-learning based approaches to performing this task require a large corpus of annotated data and lack the ability to…

Artificial Intelligence · Computer Science 2026-01-09 Trang Tran , Trung Hoang Le , Huiping Cao , Tran Cao Son

Most information extraction methods focus on binary relations expressed within single sentences. In high-value domains, however, $n$-ary relations are of great demand (e.g., drug-gene-mutation interactions in precision oncology). Such…

Computation and Language · Computer Science 2019-06-28 Robin Jia , Cliff Wong , Hoifung Poon

This paper introduces a new information extraction model for business documents. Different from prior studies which only base on span extraction or sequence labeling, the model takes into account advantage of both span extraction and…

Computation and Language · Computer Science 2022-05-27 Nguyen Hong Son , Hieu M. Vu , Tuan-Anh D. Nguyen , Minh-Tien Nguyen

Document pair extraction aims to identify key and value entities as well as their relationships from visually-rich documents. Most existing methods divide it into two separate tasks: semantic entity recognition (SER) and relation extraction…

Computation and Language · Computer Science 2024-11-19 Zening Lin , Jiapeng Wang , Teng Li , Wenhui Liao , Dayi Huang , Longfei Xiong , Lianwen Jin

Usually, entity relation recognition systems either use a pipe-lined model that treats the entity tagging and relation identification as separate tasks or a joint model that simultaneously identifies the relation and entities. This paper…

Computation and Language · Computer Science 2020-09-21 Venkata Sasank Pagolu

Relation Extraction (RE) is a fundamental task of information extraction, which has attracted a large amount of research attention. Previous studies focus on extracting the relations within a sentence or document, while currently…

Computation and Language · Computer Science 2022-11-01 Fengqi Wang , Fei Li , Hao Fei , Jingye Li , Shengqiong Wu , Fangfang Su , Wenxuan Shi , Donghong Ji , Bo Cai

Dialogue summarization helps readers capture salient information from long conversations in meetings, interviews, and TV series. However, real-world dialogues pose a great challenge to current summarization models, as the dialogue length…

Computation and Language · Computer Science 2021-09-13 Yusen Zhang , Ansong Ni , Tao Yu , Rui Zhang , Chenguang Zhu , Budhaditya Deb , Asli Celikyilmaz , Ahmed Hassan Awadallah , Dragomir Radev

Relation extraction is a key task in Natural Language Processing (NLP), which aims to extract relations between entity pairs from given texts. Recently, relation extraction (RE) has achieved remarkable progress with the development of deep…

Computation and Language · Computer Science 2022-04-12 Xinnian Liang , Shuangzhi Wu , Mu Li , Zhoujun Li

This study introduces a novel approach to sentence-level relation extraction (RE) that integrates Graph Neural Networks (GNNs) with Large Language Models (LLMs) to generate contextually enriched support documents. By harnessing the power of…

Computation and Language · Computer Science 2024-11-01 Vicky Dong , Hao Yu , Yao Chen

Question answering (QA) systems for large document collections typically use pipelines that (i) retrieve possibly relevant documents, (ii) re-rank them, (iii) rank paragraphs or other snippets of the top-ranked documents, and (iv) select…

Information Retrieval · Computer Science 2021-06-17 Dimitris Pappas , Ion Androutsopoulos

Document-level relation extraction (DocRE) aims to determine the relation between two entities from a document of multiple sentences. Recent studies typically represent the entire document by sequence- or graph-based models to predict the…

Computation and Language · Computer Science 2022-04-28 Wang Xu , Kehai Chen , Lili Mou , Tiejun Zhao

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…

Computation and Language · Computer Science 2019-12-05 Qiongxing Tao , Xiangfeng Luo , Hao Wang

Tagging based relational triple extraction methods are attracting growing research attention recently. However, most of these methods take a unidirectional extraction framework that first extracts all subjects and then extracts objects and…

Computation and Language · Computer Science 2022-01-06 Feiliang Ren , Longhui Zhang , Xiaofeng Zhao , Shujuan Yin , Shilei Liu , Bochao Li

Document-level Relation Extraction (DocRE) is a more challenging task compared to its sentence-level counterpart. It aims to extract relations from multiple sentences at once. In this paper, we propose a semi-supervised framework for DocRE…

Computation and Language · Computer Science 2022-03-22 Qingyu Tan , Ruidan He , Lidong Bing , Hwee Tou Ng

Relation extraction (RE) aims to identify the semantic relations between named entities in text. Recent years have witnessed it raised to the document level, which requires complex reasoning with entities and mentions throughout an entire…

Computation and Language · Computer Science 2020-09-23 Difeng Wang , Wei Hu , Ermei Cao , Weijian Sun

Document-level Relation Extraction (DRE) aims to recognize the relations between two entities. The entity may correspond to multiple mentions that span beyond sentence boundary. Few previous studies have investigated the mention…

Computation and Language · Computer Science 2022-01-14 Chao Zhao , Daojian Zeng , Lu Xu , Jianhua Dai

Past work in relation extraction mostly focuses on binary relation between entity pairs within single sentence. Recently, the NLP community has gained interest in relation extraction in entity pairs spanning multiple sentences. In this…

Computation and Language · Computer Science 2019-01-15 Pankaj Gupta , Subburam Rajaram , Hinrich Schütze , Bernt Andrassy , Thomas Runkler

Recent neural models for relation extraction with distant supervision alleviate the impact of irrelevant sentences in a bag by learning importance weights for the sentences. Efforts thus far have focused on improving extraction accuracy but…

Information Retrieval · Computer Science 2020-06-01 Hamed Shahbazi , Xiaoli Z. Fern , Reza Ghaeini , Prasad Tadepalli
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