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Two-stage Method for Large-scale Acquisition of Contradiction Pattern Pairs using Entailment
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BibTeX
@MISC{Kloetzer_two-stagemethod,
author = {Julien Kloetzer and Stijn De and Saeger Kentaro and Torisawa Chikara Hashimoto and Jong-hoon Oh and Motoki Sano and Kiyonori Ohtake},
title = {Two-stage Method for Large-scale Acquisition of Contradiction Pattern Pairs using Entailment},
year = {}
}
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Abstract
In this paper we propose a two-stage method to acquire contradiction relations between typed lexico-syntactic patterns such as Xdrug prevents Ydisease and Ydisease caused by Xdrug. In the first stage, we train an SVM classifier to detect contradiction pattern pairs in a large web archive by exploiting the exci-tation polarity (Hashimoto et al., 2012) of the patterns. In the second stage, we enlarge the first stage classifier’s training data with new contradiction pairs obtained by combining the output of the first stage’s classifier and that of an entailment classifier. We acquired this way 750,000 typed Japanese contradiction pattern pairs with an estimated precision of 80%. We plan to release this resource to the NLP com-munity. 1
Keyphrases
two-stage method contradiction pattern pair large-scale acquisition first stage classifier training data xdrug prevents ydisease first stage classifier new contradiction pair nlp com-munity contradiction relation entailment classifier large web archive lexico-syntactic pattern first stage svm classifier japanese contradiction pattern pair second stage exci-tation polarity
