摘要
目前的搜索引擎主要根据字符匹配来实现,具有搜索查准率、查全率不高等缺点,已不适应人们快速获取信息的需要,本文设计了一个基于本体的搜索引擎的模型,把本体应用到搜索引擎中,分析了聚焦爬虫的工作原理,研究了主题相关度的计算方法,对知识库做了简要分析,大大提高了搜索引擎的速度与精确度,具有广阔的应用前景.
The current search engine is unsatisfactory in precision ratio and recall ratio due to its character-matching working principle.This paper analyses the working principle of crawler based on ontology and examines the subject related calculating method based on the analysis of ontology-based knowledge base.The paper also proposes an ontology-based search engine model which improves the speed and accuracy of search engine and thus guarantees its application promise.
出处
《西华师范大学学报（自然科学版）》
2010年第4期382-385,共4页
Journal of China West Normal University(Natural Sciences)
基金
四川省教育厅资助项目(08ZA158)
关键词
本体
聚焦爬虫
主题相关度
知识库
ontology
focused crawler
topic relevance
knowledge base
