Paper: The Answer is at your Fingertips: Improving Passage Retrieval for Web Question Answering with Search Behavior Data

ACL ID D13-1103
Title The Answer is at your Fingertips: Improving Passage Retrieval for Web Question Answering with Search Behavior Data
Venue Conference on Empirical Methods in Natural Language Processing
Session Main Conference
Year 2013
Authors

Passage retrieval is a crucial first step of au- tomatic Question Answering (QA). While ex- isting passage retrieval algorithms are effec- tive at selecting document passages most sim- ilar to the question, or those that contain the expected answer types, they do not take into account which parts of the document the searchers actually found useful. We propose, to the best of our knowledge, the first success- ful attempt to incorporate searcher examina- tion data into passage retrieval for question an- swering. Specifically, we exploit detailed ex- amination data, such as mouse cursor move- ments and scrolling, to infer the parts of the document the searcher found interesting, and then incorporate this signal into passage re- trieval for QA. Our extensive experiments and analysis demonstrat...