面向农民的问答系统问句处理研究  

Study on the Question Processing of Farmer-oriented Question Answering System

作　　者：贾君枝[1] 王永芳[1] 李婷[1] 

机构地区：[1]山西大学管理学院,太原030006

出　　处：《现代图书情报技术》2010年第5期43-49,共7页New Technology of Library and Information Service

基　　金：山西省高等学校人文社会科学重点研究基地项目"山西省农民信息服务研究"(项目编号:20093004)的研究成果之一

摘　　要：为提高农民获取信息的便利性,文章着重面向农民问答系统的开发,提出问答系统由知识库构建、问句处理、信息检索、答案抽取4个模块组成,其中问句处理是研究重点。在总结农民问句特点的基础上,提出基于疑问词和短语的问句分类方法,并在问句处理过程中采用去除客气词、建立针对非正式疑问词和无疑问词时的"特殊规则表"等方法,以有效地进行问句归类及关键词提取。同时利用所构建的"同义词扩展词表"扩充关键词,并设定不同的权重基准,为信息检索模块的处理奠定基础。In order to improve the convenience of farmers＇ access to information, this paper is focused on developing the farmer- oriented question answering system and proposes that the system is composed of four modules： knowledge base construction, question processing, information retrieval, answer extraction, in which question processing is the research priority. On the basis of concluding the characteristics of farmers＇ questions, it proposes the question classification method based on interrogatives and phrases. During the question processing, methods are adopted to classify the questions and extract the keywords effectively, such as removing polite words, establishing special rule table for informal interrogatives and no interrogative and so on. While, the authors take advantage of the synonym extended table to expand keywords, and set different weight benchmarks. The research can lay the foundation for the processing of the information retrieval module.

关 键 词：农民信息服务 问答系统 问句处理 

分 类 号：G354.4[文化科学—情报学]