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LoG: a locally-global model for entity disambiguation

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Abstract

Entity disambiguation (ED) aims to link textual mentions in a document to the correct named entities in a knowledge base (KB). Although global ED models usually outperform local models by collectively linking mentions based on the topical coherence assumption, they may still incur incorrect entity assignment when a document contains multiple topics. Therefore, we propose a Locally-Global model (LoG) for ED which extracts global features locally, i.e., among a limited number of neighboring mentions, to combine the respective superiority of both models. In particular, we derive mention neighbors according to the syntactic distance on a dependency parse tree, and propose a tree connection method CoSimTC to measure the cross-tree distance between mentions. We also recognize the importance of keywords in a document for collective entity disambiguation, which reveal the central topic information of the document. Hence, we propose a keyword extraction method Sent2Word to detect keywords of each document. Furthermore, we extend the Graph Attention Network (GAT) to integrate both local and global features to produce a discriminative representation for each candidate entity. Our experimental results on six widely-adopted public datasets demonstrate better performance compared with state-of-the-art ED approaches. The high efficiency of the LoG model further verifies its feasibility in practice.

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Authors and Affiliations

  1. School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, Australia

    Kexuan Xin, Wen Hua, Yu Liu & Xiaofang Zhou

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  1. Kexuan Xin
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  2. Wen Hua
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  3. Yu Liu
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  4. Xiaofang Zhou
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Correspondence to Wen Hua.

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This article belongs to the Topical Collection: Special Issue on Web Information Systems Engineering 2019

Guest Editors: Reynold Cheng, Nikos Mamoulis, and Xin Huang

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Xin, K., Hua, W., Liu, Y. et al. LoG: a locally-global model for entity disambiguation. World Wide Web 24, 351–373 (2021). https://doi.org/10.1007/s11280-020-00845-4

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