Paper: Is It The Right Answer? Exploiting Web Redundancy For Answer Validation

ACL ID P02-1054
Title Is It The Right Answer? Exploiting Web Redundancy For Answer Validation
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 2002
Authors

Answer Validation is an emerging topic in Question Answering, where open do- main systems are often required to rank huge amounts of candidate answers. We present a novel approach to answer valida- tion based on the intuition that the amount of implicit knowledge which connects an answer to a question can be quantitatively estimated by exploiting the redundancy of Web information. Experiments carried out on the TREC-2001 judged-answer collec- tion show that the approach achieves a high level of performance (i.e. 81% suc- cess rate). The simplicity and the effi- ciency of this approach make it suitable to be used as a module in Question Answer- ing systems.