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Document-level relation extraction faces two overlooked challenges: long-tail problem and multi-label problem. Previous work focuses mainly on obtaining better contextual representations for entity pairs, hardly address the above…

计算与语言 · 计算机科学 2022-12-21 Ridong Han , Tao Peng , Benyou Wang , Lu Liu , Xiang Wan

Current research in form understanding predominantly relies on large pre-trained language models, necessitating extensive data for pre-training. However, the importance of layout structure (i.e., the spatial relationship between the entity…

计算与语言 · 计算机科学 2024-06-05 Pritika Ramu , Sijia Wang , Lalla Mouatadid , Joy Rimchala , Lifu Huang

In many government applications we often find that information about entities, such as persons, are available in disparate data sources such as passports, driving licences, bank accounts, and income tax records. Similar scenarios are…

数据库 · 计算机科学 2014-02-19 Pankaj Malhotra , Puneet Agarwal , Gautam Shroff

Document-level relation extraction aims to categorize the association between any two entities within a document. We find that previous methods for document-level relation extraction are ineffective in exploiting the full potential of large…

计算与语言 · 计算机科学 2024-06-11 Chufan Gao , Xuan Wang , Jimeng Sun

Document-level relation extraction requires integrating information within and across multiple sentences of a document and capturing complex interactions between inter-sentence entities. However, effective aggregation of relevant…

计算与语言 · 计算机科学 2020-07-29 Guoshun Nan , Zhijiang Guo , Ivan Sekulić , Wei Lu

We present an instance-based nearest neighbor approach to entity linking. In contrast to most prior entity retrieval systems which represent each entity with a single vector, we build a contextualized mention-encoder that learns to place…

信息检索 · 计算机科学 2022-07-26 Nicholas FitzGerald , Jan A. Botha , Daniel Gillick , Daniel M. Bikel , Tom Kwiatkowski , Andrew McCallum

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…

计算与语言 · 计算机科学 2023-05-26 Xuming Hu , Zhijiang Guo , Zhiyang Teng , Irwin King , Philip S. Yu

Multi-view multi-label data offers richer perspectives for artificial intelligence, but simultaneously presents significant challenges for feature selection due to the inherent complexity of interrelations among features, views and labels.…

机器学习 · 计算机科学 2025-11-18 Yuzhou Liu , Jiarui Liu , Wanfu Gao

To solve the problem of redundant information and overlapping relations of the entity and relation extraction model, we propose a joint extraction model. This model can directly extract multiple pairs of related entities without generating…

计算与语言 · 计算机科学 2020-11-30 Yuanhao Shen , Jungang Han

Document-level relation extraction (RE) aims at extracting relations among entities expressed across multiple sentences, which can be viewed as a multi-label classification problem. In a typical document, most entity pairs do not express…

计算与语言 · 计算机科学 2022-05-04 Yang Zhou , Wee Sun Lee

Recent literature focuses on utilizing the entity information in the sentence-level relation extraction (RE), but this risks leaking superficial and spurious clues of relations. As a result, RE still suffers from unintended entity bias,…

计算与语言 · 计算机科学 2022-05-10 Yiwei Wang , Muhao Chen , Wenxuan Zhou , Yujun Cai , Yuxuan Liang , Dayiheng Liu , Baosong Yang , Juncheng Liu , Bryan Hooi

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…

计算与语言 · 计算机科学 2022-04-28 Wang Xu , Kehai Chen , Lili Mou , Tiejun Zhao

Document-level relation extraction (RE) aims to identify the relations between entities throughout an entire document. It needs complex reasoning skills to synthesize various knowledge such as coreferences and commonsense. Large-scale…

计算与语言 · 计算机科学 2022-07-26 Xinyi Wang , Zitao Wang , Weijian Sun , Wei Hu

Document-level relation extraction (RE), which requires reasoning on multiple entities in different sentences to identify complex inter-sentence relations, is more challenging than sentence-level RE. To extract the complex inter-sentence…

计算与语言 · 计算机科学 2022-04-04 Liang Zhang , Yidong Cheng

Document-level relation extraction aims at inferring structured human knowledge from textual documents. State-of-the-art methods for this task use pre-trained language models (LMs) via fine-tuning, yet fine-tuning is computationally…

计算与语言 · 计算机科学 2024-10-03 Yilmazcan Ozyurt , Stefan Feuerriegel , Ce Zhang

Relation extraction is essentially a text classification problem, which can be tackled by fine-tuning a pre-trained language model (LM). However, a key challenge arises from the fact that relation extraction cannot straightforwardly be…

计算与语言 · 计算机科学 2024-10-03 Frank Mtumbuka , Steven Schockaert

Document-level relation extraction (DocRE) is an active area of research in natural language processing (NLP) concerned with identifying and extracting relationships between entities beyond sentence boundaries. Compared to the more…

Extracting structured information from unstructured text is critical for many downstream NLP applications and is traditionally achieved by closed information extraction (cIE). However, existing approaches for cIE suffer from two…

计算与语言 · 计算机科学 2024-04-22 Nacime Bouziani , Shubhi Tyagi , Joseph Fisher , Jens Lehmann , Andrea Pierleoni

Extracting entities and relations is an essential task of information extraction. Triplets extracted from a sentence might overlap with each other. Previous methods either did not address the overlapping issues or solved overlapping issues…

计算与语言 · 计算机科学 2023-04-07 Hao Zhang

Large language models with long context windows can answer complex questions directly from full-length academic, technical, and policy documents, but passing entire documents is often costly, slow, and can degrade answer quality while…