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Improve relation extraction with dual attention-guided graph convolutional networks

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Abstract

To better learn the dependency relationship between nodes, we address the relationship extraction task by capturing rich contextual dependencies based on the attention mechanism, and using distributional reinforcement learning to generate optimal relation information representation. This method is called Dual Attention Graph Convolutional Network (DAGCN), to adaptively integrate local features with their global dependencies. Specifically, we append two types of attention modules on top of GCN, which model the semantic interdependencies in spatial and relational dimensions, respectively. The position attention module selectively aggregates the feature at each position by a weighted sum of the features at all positions of nodes internal features. Meanwhile, the relation attention module selectively emphasizes interdependent node relations by integrating associated features among all nodes. We sum the outputs of the two attention modules and use reinforcement learning to predict the classification of nodes relationship to further improve feature representation which contributes to more precise extraction results. The results on the TACRED and SemEval datasets show that the model can obtain more useful information for relational extraction tasks, and achieve better performances on various evaluation indexes.

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Acknowledgements

This work is supported by the National Natural Science Foundation of China (Nos. 61966004, 61663004, 61967002, 61866004, 61762078), the Guangxi Natural Science Foundation (Nos. 2019GXNSFDA245018, 2018GXNSFDA281009, 2017GXNSFAA198365, 2016GXNSFAA380146), the Guangxi “Bagui Scholar” Teams for Innovation and Research Project, the Guangxi Talent Highland Project of Big Data Intelligence and Application, and Guangxi Collaborative Innovation Center of Multi-Source Information Integration and Intelligent Processing.

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Authors and Affiliations

  1. Guangxi Key Lab of Multi-source Information Mining and Security, Guangxi Normal University, Guilin, 541004, China

    Zhixin Li, Yaru Sun, Jianwei Zhu, Suqin Tang & Canlong Zhang

  2. College of Computer Science and Engineering, Northwest Normal University, Lanzhou, 730070, China

    Huifang Ma

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  1. Zhixin Li
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  2. Yaru Sun
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  3. Jianwei Zhu
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Correspondence to Zhixin Li.

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Li, Z., Sun, Y., Zhu, J. et al. Improve relation extraction with dual attention-guided graph convolutional networks. Neural Comput & Applic 33, 1773–1784 (2021). https://doi.org/10.1007/s00521-020-05087-z

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