Multilevel Hypernode Graphs for Effective and Efficient Entity Linking

David Montero, Javier Martínez, Javier Yebes


Abstract
Information extraction on documents still remains a challenge, especially when dealing with unstructured documents with complex and variable layouts. Graph Neural Networks seem to be a promising approach to overcome these difficulties due to their flexible and sparse nature, but they have not been exploited yet. In this work, we present a multi-level graph-based model that performs entity building and linking on unstructured documents, purely based on GNNs, and extremely light (0.3 million parameters). We also propose a novel strategy for an optimal propagation of the information between the graph levels based on hypernodes. The conducted experiments on public and private datasets demonstrate that our model is suitable for solving the tasks, and that the proposed propagation strategy is optimal and outperforms other approaches.
Anthology ID:
2022.textgraphs-1.1
Volume:
Proceedings of TextGraphs-16: Graph-based Methods for Natural Language Processing
Month:
October
Year:
2022
Address:
Gyeongju, Republic of Korea
Editors:
Dmitry Ustalov, Yanjun Gao, Alexander Panchenko, Marco Valentino, Mokanarangan Thayaparan, Thien Huu Nguyen, Gerald Penn, Arti Ramesh, Abhik Jana
Venue:
TextGraphs
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
1–10
Language:
URL:
https://aclanthology.org/2022.textgraphs-1.1
DOI:
Bibkey:
Cite (ACL):
David Montero, Javier Martínez, and Javier Yebes. 2022. Multilevel Hypernode Graphs for Effective and Efficient Entity Linking. In Proceedings of TextGraphs-16: Graph-based Methods for Natural Language Processing, pages 1–10, Gyeongju, Republic of Korea. Association for Computational Linguistics.
Cite (Informal):
Multilevel Hypernode Graphs for Effective and Efficient Entity Linking (Montero et al., TextGraphs 2022)
Copy Citation:
PDF:
https://aclanthology.org/2022.textgraphs-1.1.pdf
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