NTCIR-3 QAC Experiments at Matsushita
Masako Nomoto, Yoshio Fukushige, Mitsuhiro Sato, Hiroyuki Suzuki · NTCIR · 2002
This paper investigates our experimental results for NTCIR-4 QAC2, the second attempt to evaluate the technology of Japanese question answering (QA). Our basic approach is a combination of information retrieval and named entity (NE) extraction based on pattern matching. The results show that the accuracy of NE extraction crucially affects the overall performance of our system. Additional experiments show the effects of refinements of answer extraction.