Abstract
We propose a definitional question answering system that extracts phrases using syntactic patterns which are easily constructed manually and can reduce the coverage problem. Experimental results show that our phrase extraction system outperforms a sentence extraction system, especially for selecting concise answers, in terms of recall and precision, and indicate that the proper text unit of answer candidates and the final answer has a significant effect on the system performance.
Original language | English |
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Pages (from-to) | 1601-1605 |
Number of pages | 5 |
Journal | IEICE Transactions on Information and Systems |
Volume | E89-D |
Issue number | 4 |
DOIs | |
Publication status | Published - 2006 Apr |
Keywords
- Definitional question answering
- Phrase extraction
ASJC Scopus subject areas
- Software
- Hardware and Architecture
- Computer Vision and Pattern Recognition
- Electrical and Electronic Engineering
- Artificial Intelligence