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Open relation extraction is the task of extracting open-domain relation facts from natural language sentences. Existing works either utilize heuristics or distant-supervised annotations to train a supervised classifier over pre-defined…

Computation and Language · Computer Science 2020-10-07 Xuming Hu , Chenwei Zhang , Yusong Xu , Lijie Wen , Philip S. Yu

Knowledge-based question answering relies on the availability of facts, the majority of which cannot be found in structured sources (e.g. Wikipedia info-boxes, Wikidata). One of the major components of extracting facts from unstructured…

Computation and Language · Computer Science 2018-03-28 Christos Christodoulopoulos , Arpit Mittal

The goal of open relation extraction (OpenRE) is to develop an RE model that can generalize to new relations not encountered during training. Existing studies primarily formulate OpenRE as a clustering task. They first cluster all test…

Computation and Language · Computer Science 2025-09-19 Hongyao Tu , Liang Zhang , Yujie Lin , Xin Lin , Haibo Zhang , Long Zhang , Jinsong Su

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…

Computation and Language · Computer Science 2024-06-25 Xiaoyan Zhao , Yang Deng , Min Yang , Lingzhi Wang , Rui Zhang , Hong Cheng , Wai Lam , Ying Shen , Ruifeng Xu

Typically, Few-shot Continual Relation Extraction (FCRE) models must balance retaining prior knowledge while adapting to new tasks with extremely limited data. However, real-world scenarios may also involve unseen or undetermined relations…

Machine Learning · Computer Science 2025-02-26 Thiem Nguyen , Anh Nguyen , Quyen Tran , Tu Vu , Diep Nguyen , Linh Ngo , Thien Nguyen

Low-shot relation extraction~(RE) aims to recognize novel relations with very few or even no samples, which is critical in real scenario application. Few-shot and zero-shot RE are two representative low-shot RE tasks, which seem to be with…

Computation and Language · Computer Science 2022-03-24 Fangchao Liu , Hongyu Lin , Xianpei Han , Boxi Cao , Le Sun

Multimodal relation extraction (MRE) is the task of identifying the semantic relationships between two entities based on the context of the sentence image pair. Existing retrieval-augmented approaches mainly focused on modeling the…

Computation and Language · Computer Science 2023-05-26 Xuming Hu , Zhijiang Guo , Zhiyang Teng , Irwin King , Philip S. Yu

Relation extraction (RE) seeks to detect and classify semantic relationships between entities, which provides useful information for many NLP applications. Since the state-of-the-art RE models require large amounts of manually annotated…

Computation and Language · Computer Science 2019-11-13 Jian Ni , Radu Florian

Despite advances in Large Language Models (LLMs) and Multimodal LLMs (MLLMs) for visual document understanding (VDU), visual information extraction (VIE) from relation-rich documents remains challenging due to the layout diversity and…

Computer Vision and Pattern Recognition · Computer Science 2025-04-16 Zi-Han Jiang , Chien-Wei Lin , Wei-Hua Li , Hsuan-Tung Liu , Yi-Ren Yeh , Chu-Song Chen

Document-level relation extraction is to extract relation facts from a document consisting of multiple sentences, in which pronoun crossed sentences are a ubiquitous phenomenon against a single sentence. However, most of the previous works…

Computation and Language · Computer Science 2022-02-23 Zhongxuan Xue , Rongzhen Li , Qizhu Dai , Zhong Jiang

Few-shot Continual Relation Extraction is a crucial challenge for enabling AI systems to identify and adapt to evolving relationships in dynamic real-world domains. Traditional memory-based approaches often overfit to limited samples,…

Computation and Language · Computer Science 2025-03-03 Nguyen Xuan Thanh , Anh Duc Le , Quyen Tran , Thanh-Thien Le , Linh Ngo Van , Thien Huu Nguyen

Relation Extraction (RE) serves as a crucial technology for transforming unstructured text into structured information, especially within the framework of Knowledge Graph development. Its importance is emphasized by its essential role in…

Computation and Language · Computer Science 2024-06-27 Dawulie Jinensibieke , Mieradilijiang Maimaiti , Wentao Xiao , Yuanhang Zheng , Xiaobo Wang

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.…

Computation and Language · Computer Science 2023-08-24 Yerong Li , Roxana Girju

We show that state-of-the-art self-supervised language models can be readily used to extract relations from a corpus without the need to train a fine-tuned extractive head. We introduce RE-Flex, a simple framework that performs constrained…

Computation and Language · Computer Science 2020-10-15 Ankur Goswami , Akshata Bhat , Hadar Ohana , Theodoros Rekatsinas

Relation extraction (RE) aims to identify semantic relationships between entities within text. Despite considerable advancements, existing models predominantly require extensive annotated training data, which is both costly and…

Computation and Language · Computer Science 2024-10-28 Sizhe Zhou , Yu Meng , Bowen Jin , Jiawei Han

Relation extraction (RE) consistently involves a certain degree of labeled or unlabeled data even if under zero-shot setting. Recent studies have shown that large language models (LLMs) transfer well to new tasks out-of-the-box simply given…

Artificial Intelligence · Computer Science 2023-11-27 Guozheng Li , Peng Wang , Wenjun Ke

Document-Level Relation Extraction (DocRE) presents significant challenges due to its reliance on cross-sentence context and the long-tail distribution of relation types, where many relations have scarce training examples. In this work, we…

Computation and Language · Computer Science 2026-01-19 Laura Menotti , Stefano Marchesin , Gianmaria Silvello

Relation extraction (RE), which has relied on structurally annotated corpora for model training, has been particularly challenging in low-resource scenarios and domains. Recent literature has tackled low-resource RE by self-supervised…

Computation and Language · Computer Science 2023-06-01 Wenxuan Zhou , Sheng Zhang , Tristan Naumann , Muhao Chen , Hoifung Poon

Real-world data, such as news articles, social media posts, and chatbot conversations, is inherently dynamic and non-stationary, presenting significant challenges for constructing real-time structured representations through knowledge…

Computation and Language · Computer Science 2025-08-26 Sefika Efeoglu , Adrian Paschke , Sonja Schimmler

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