自动问答系统及其评测

摘要

自动问答系统是一个新兴的研究热点,它以自然语言的方式提出问题,采用自然语言处理技术,自动返给用户相关答案.本文概述了自动问答系统的常用技术和发展现状,介绍了主要的国际评测体系,并指出了将来的研究方向.%Question and Answering (QA) system currently is a hot research topic, and widely used in governmental, academic, and commercial applications. QA systems take natural language queries as input, process large unstructured document collections, and return precise answers as output. This paper summarizes the current research status and the methods of QA system available on the Web, introduces the evaluations of QA systems, and at last gives future work of QA systems.