摘要
由于互联网上异构数据的爆炸性增长,目前依靠关键词技术的垂直搜索引擎遇到发展的瓶颈。本文引入本体论及相关技术,构建基于本体的垂直搜索引擎系统模型。模型中对抓取的异构信息进行本体化描述,在此基础上进行概念相似度计算,实现语义相关的本体查询,大大改善了目前垂直搜索引擎的查全率与查准率。
Because of the explosive growth of the heterogeneous data on the Internet, the development of the vertical search engine meets a bottleneck. This paper introduces the ontology technology to vertical search, and constructs a vertical search system model. In this model, the heterogeneous information captured from the Internet is described by the ontology technology, the concept similarity is computed, and the semantic ontology query is realized. Thus the recall ratio and the precision ratio of the engine are greatly improved.
出处
《计算机工程与科学》
CSCD
2008年第10期5-7,14,共4页
Computer Engineering & Science
关键词
本体
垂直搜索引擎
语义
概念相似度
ontology
vertical search engine
semantic
concept similarity
