Extracting structural paraphrases from aligned monolingual corpora

TitleExtracting structural paraphrases from aligned monolingual corpora
Publication TypeConference Papers
Year of Publication2003
AuthorsIbrahim A, Katz B, Jimmy Lin
Conference NameProceedings of the second international workshop on Paraphrasing - Volume 16
Date Published2003///
PublisherAssociation for Computational Linguistics
Conference LocationStroudsburg, PA, USA

We present an approach for automatically learning paraphrases from aligned monolingual corpora. Our algorithm works by generalizing the syntactic paths between corresponding anchors in aligned sentence pairs. Compared to previous work, structural paraphrases generated by our algorithm tend to be much longer on average, and are capable of capturing long-distance dependencies. In addition to a standalone evaluation of our paraphrases, we also describe a question answering application currently under development that could immensely benefit from automatically-learned structural paraphrases.