【摘要】 首先给出了问答系统的定义,并对问答系统的历史进行回顾.然后对现有问答系统进行了分类,并对各类问答系统的性能及其所采用的核心技术进行了分析、总结.最后对问答系统的发展趋势进行了展望.在此基础之上,提出浅层模式推理理论,对问答系统的发展,进行了有益的探索.该理论综合了现有问答系统的优点,有望基于纯粹的文本知识,实现检索、理解、推理一体化的机制.更多还原

【Abstract】 This paper defined the concept of Question Answering System (QA),and surveyed the history of QA.Then classified the current QA systems,analyzed their capabilities and summarized the key technology they adopted.At last,forecasted the developing trend of QA.Based on these,proposed the theory of "Surface Structure Pattern Reasoning",which is an exploration to the developing direction of QA.This theory combined the excellence of current Question Answering System and is hoped to fulfill the mechanism of retrieval,understanding and reasoning based on pure text knowledge.更多还原