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Weakly Supervised Entity Alignment with Positional Inspiration

Published: 27 February 2023 Publication History

Abstract

The current success of entity alignment (EA) is still mainly based on large-scale labeled anchor links. However, the refined annotation of anchor links still consumes a lot of manpower and material resources. As a result, an increasing number of works based on active learning, few-shot learning, or other deep network learning techniques have been developed to address the performance bottleneck caused by a lack of labeled data. These works focus either on the strategy of choosing more informative labeled data or on the strategy of model training, while it remains opaque why existing popular EA models (e.g., GNN-based models) fail the EA task with limited labeled data. To overcome this issue, this paper analyzes the problem of weakly supervised EA from the perspective of model design and proposes a novel weakly supervised learning framework, Position Enhanced Entity Alignment (PEEA). Besides absorbing structural and relational information, PEEA aims to increase the connections between far-away entities and labeled ones by incorporating positional information into the representation learning with a Position Attention Layer (PAL). To fully utilize the limited anchor links, we further introduce a novel position encoding method that considers both anchor links and relational information from a global view. The proposed position encoding will be fed into PEEA as additional entity features. Extensive experiments on public datasets demonstrate the effectiveness of PEEA.

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    cover image ACM Conferences
    WSDM '23: Proceedings of the Sixteenth ACM International Conference on Web Search and Data Mining
    February 2023
    1345 pages
    ISBN:9781450394079
    DOI:10.1145/3539597
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    Published: 27 February 2023

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    Author Tags

    1. entity alignment
    2. positional encoding
    3. weakly supervised learning

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    • National Natural Science Foundation of China
    • Ministry of Education and China Mobile Joint Fund
    • China Postdoctoral Science Foundation

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