摘要
由于通用搜索引擎具有搜索信息量大、查询不准确、深度不够等缺点,本文在通用搜索引擎技术的基础上,依据专业领域搜索策略,设计并实现了一个面向教育主题的垂直搜索引擎系统,着重研究了专业网络蜘蛛定制、基于VSM的主题相关度算法和倒排索引建立等关键技术及其实现细节。实验结果表明,该系统能够快速地响应用户的查询请求,并且返回结果具有较高的准确性。实现了教育资源的共享,具有较高的应用价值。
The general search engine has some disadvantages,such as the amount of information is too large,the search results are not accurate enough,and the search deepness is insufficient enough.Based on the general search engine technology and according to the search strategies of expertise field,this paper designs and realizes a vertical search engine system for education theme.We focus on researching and realizing some key techniques about the professional customization of web spider,the algorithm for the degree of subject relativity based on VSM,and the establishment of inverted index.The experimental results show that,this system can quickly respond to the user＇s queries,and the results can return with a high accuracy.The system realizes the sharing of educational resources,which has a high application value.
基金
吉林省科技发展计划项目(20100709)
