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Improving Distantly Supervised Relation Extraction with Neural Noise Converter and Conditional Optimal Selector

2018-11-14 03:02:12
Shanchan Wu, Kai Fan, Qiong Zhang
arXiv_AI
           
Abstract

Distant supervised relation extraction has been successfully applied to large corpus with thousands of relations. However, the inevitable wrong labeling problem by distant supervision will hurt the performance of relation extraction. In this paper, we propose a method with neural noise converter to alleviate the impact of noisy data, and a conditional optimal selector to make proper prediction. Our noise converter learns the structured transition matrix on logit level and captures the property of distant supervised relation extraction dataset. The conditional optimal selector on the other hand helps to make proper prediction decision of an entity pair even if the group of sentences is overwhelmed by no-relation sentences. We conduct experiments on a widely used dataset and the results show significant improvement over competitive baseline methods.

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URL

https://arxiv.org/abs/1811.05616

PDF

https://arxiv.org/pdf/1811.05616.pdf

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