emnlp emnlp2012 emnlp2012-135 emnlp2012-135-reference knowledge-graph by maker-knowledge-mining
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Author: Michaela Regneri ; Rui Wang
Abstract: Previous work on paraphrase extraction using parallel or comparable corpora has generally not considered the documents’ discourse structure as a useful information source. We propose a novel method for collecting paraphrases relying on the sequential event order in the discourse, using multiple sequence alignment with a semantic similarity measure. We show that adding discourse information boosts the performance of sentence-level paraphrase acquisition, which consequently gives a tremendous advantage for extracting phraselevel paraphrase fragments from matched sentences. Our system beats an informed baseline by a margin of 50%.
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