acl acl2011 acl2011-132 acl2011-132-reference knowledge-graph by maker-knowledge-mining

132 acl-2011-Extracting Paraphrases from Definition Sentences on the Web


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Author: Chikara Hashimoto ; Kentaro Torisawa ; Stijn De Saeger ; Jun'ichi Kazama ; Sadao Kurohashi

Abstract: ¶ kuro@i . We propose an automatic method of extracting paraphrases from definition sentences, which are also automatically acquired from the Web. We observe that a huge number of concepts are defined in Web documents, and that the sentences that define the same concept tend to convey mostly the same information using different expressions and thus contain many paraphrases. We show that a large number of paraphrases can be automatically extracted with high precision by regarding the sentences that define the same concept as parallel corpora. Experimental results indicated that with our method it was possible to extract about 300,000 paraphrases from 6 Web docu3m0e0n,t0s0 w0i ptha a precision oramte 6 6o ×f a 1b0out 94%. 108


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