A Web-based Chinese Open-domain Question Answering System
基于Web的中文开放式问题回答系统

The Internet is increasingly being used as a source of reference information.Most popular search engines, however,are not designed for answering natural language questions.A Web-based Chinese question answering system is made of four parts:question processing,information retrieval,answer extraction and answer justification.It utilizes named entity recognition,semantic dependency relations and case-based rule to realize answer extraction.Experiments show that named entity recognition,semantic dependency relations and case-based rule perform very well in answer ex- traction.