POSTECH Question-Answering Experiments at NTCIR4-QAC

Seung-Hoon Na, In-Su Kang, Jong-Hyeok Lee
2004 NTCIR Conference on Evaluation of Information Access Technologies  
This paper describes our system and additional experimental results in NTCIR-4 QAC Task 1. The main components of our system are question classification, passage retrieval, and named entity extraction. Passage retrieval was performed by a density-based ranking method based on importance of query terms occurred in the passage. Question classification and Named entity extraction were designed by the rule-based approach that uses lexico-semantic patterns, in which the Kadokawa thesaurus is basic
more » ... mantic resource. Our QA system consisting of these basic components showed a weak performance in NTCIR-4, but obtained high performance in pure answer extraction.
dblp:conf/ntcir/NaKL04 fatcat:wn5bs44nkneqfemm3zu377zisu