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2005 ACL Lifetime Achievement Award
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A Survey of Paraphrasing and Textual Entailment Methods. (arXiv:0912.3747v1 [cs.CL])
Paraphrasing methods recognize, generate, or extract phrases, sentences, or longer natural language expressions that convey almost the same information. Textual entailment methods, on the other hand, recognize, generate, or extract pairs of natural language expressions, such that a human who reads (and trusts) the first element of a pair would most likely infer that the other element is also true. Paraphrasing can be seen as bidirectional textual entailment and methods from the two areas are often very similar. Both kinds of methods are useful in a wide range of natural language processing applications, including question answering, summarization, text generation, and ...