Using Knowledge to Facilitate Pinpointing of Factoid Answers
- E.H. Hovy ,
- U. Hermjakob ,
- Chin-Yew Lin ,
- Deepak Ravichandran
19th International Conference on Computational Linguistics (COLING 2002) |
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.