Context Sensitive Paraphrasing
Given a sentence and a specic word or phrase in that sentence, is it possible to replace that word or phrase with another and have the sentence keep the same meaning? Most paraphrasing work develops patterns and templates that can replace other patterns or templates in some context. But what about a specic given context, how do we know if a paraphrase rule applies? Ideally if one knew the correct sense to every word in the sentence, then one would also know what other words or phrases can replace a given word and have the sentence keep its same or entailed meaning. As it is there is no reliable way to tag the sense of every word, and with current sense repositories it is difcult (and perhaps impossible) to determine what senses can replace another for every word and every domain. We will present a new task and formalism that rests somewhere between these two approaches. Our system will allow us to say if A can replace B in a context sensitive way, even on unseen A and B.