Using Knowledge to Facilitate Factoid Answer Pinpointing

In order to answer factoid questions, the Webclopedia QA system employs a range of knowledge resources. These include a QA Typology with answer patterns, WordNet, information about typical numerical answer ranges, and semantic relations identified by a robust parser, to filter out likely-looking but wrong candidate answers. This paper describes the knowledge resources and their impact on system performance.

• Type: Journal
• Year: 2002
• Where: COLING
• Authors: Eduard H. Hovy, Ulf Hermjakob, Chin-Yew Lin, Deepak Ravichandran
• Keywords: COLING 2002, COLING 2008, Knowledge Resources, Typical Numerical Answer, Wrong Candidate Answers