Paper: The Role Of Information Retrieval In Answering Complex Questions

ACL ID P06-2068
Title The Role Of Information Retrieval In Answering Complex Questions
Venue Annual Meeting of the Association of Computational Linguistics
Session Poster Session
Year 2006
Authors
  • Jimmy Lin (University of Maryland, College Park MD)

This paper explores the role of informa- tion retrieval in answering “relationship” questions, a new class complex informa- tion needs formally introduced in TREC 2005. Since information retrieval is of- ten an integral component of many ques- tion answering strategies, it is important to understand the impact of different term- based techniques. Within a framework of sentence retrieval, we examine three fac- tors that contribute to question answer- ing performance: the use of different re- trieval engines, relevance (both at the doc- ument and sentence level), and redun- dancy. Results point out the limitations of purely term-based methods to this chal- lenging task. Nevertheless, IR-based tech- niques provide a strong baseline on top of which more sophisticated language pro- cessing ...