bias modeling for distantly supervised relation extraction

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ID: 193856
2015
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Abstract
Distant supervision (DS) automatically annotates free text with relation mentions from existing knowledge bases (KBs), providing a way to alleviate the problem of insufficient training data for relation extraction in natural language processing (NLP). However, the heuristic annotation process does not guarantee the correctness of the generated labels, promoting a hot research issue on how to efficiently make use of the noisy training data. In this paper, we model two types of biases to reduce noise: (1) bias-dist to model the relative distance between points (instances) and classes (relation centers); (2) bias-reward to model the possibility of each heuristically generated label being incorrect. Based on the biases, we propose three noise tolerant models: MIML-dist, MIML-dist-classify, and MIML-reward, building on top of a state-of-the-art distantly supervised learning algorithm. Experimental evaluations compared with three landmark methods on the KBP dataset validate the effectiveness of the proposed methods.
Reference Key
xiang2015mathematicalbias Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Yang Xiang;Yaoyun Zhang;Xiaolong Wang;Yang Qin;Wenying Han
Journal journal of power sources
Year 2015
DOI
10.1155/2015/969053
URL
http://dx.doi.org/10.1155/2015/969053
Keywords
civil engineering (general)mathematics engineering (general)

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