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Article type: Research Article
Authors: Gui, Yaochenga; * | Liu, Qianb | Gao, Zhiqianga
Affiliations: [a] School of Computer Science and Engineering, Southeast University, Nanjing, China | [b] School of Computer Science, Nanjing University of Posts and Telecommunications, Nanjing, China
Correspondence: [*] Corresponding author: Yaocheng Gui, School of Computer Science and Engineering, Southeast University, Nanjing, China. E-mail: [email protected].
Abstract: Distant supervision has become the leading method for training large-scale information extractors. It could be encoded in the form of labeling functions, which employ knowledge bases to provide labels for the data. However, most previous works use only simple labeling functions, resulting in too much noise in the training data, and the knowledge bases are far from well-explored. In this paper, in order to improve the labeling quality of the training data for distant supervision relation extraction, we propose to make use of existing knowledge bases to effectively learn labeling functions. Specifically, labeling functions are represented as Markov Logic, which can integrate various resources into a unified model naturally. Experimental results show that the training data produced by the learned labeling functions is significantly improved in quality. Different distantly supervised relation extraction models trained on the produced training data can also achieve better performances.
Keywords: Relation extraction, distant supervision, labeling functions, markov logic networks
DOI: 10.3233/IDA-194492
Journal: Intelligent Data Analysis, vol. 24, no. 2, pp. 427-443, 2020
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