Paper: Lexical Query Paraphrasing For Document Retrieval

ACL ID C02-1161
Title Lexical Query Paraphrasing For Document Retrieval
Venue International Conference on Computational Linguistics
Session Main Conference
Year 2002

We describe a mechanism for the generation of lexical paraphrases of queries posed to an Inter- net resource. These paraphrases are generated us- ing WordNet and part-of-speech information to pro- pose synonyms for the content words in the queries. Statistical information, obtained from a corpus, is then used to rank the paraphrases. We evaluated our mechanism using 404 queries whose answers reside in the LA Times subset of the TREC-9 cor- pus. There was a 14% improvement in perfor- mance when paraphrases were used for document retrieval.