聚焦爬虫是一种面向主题的信息搜集系统，可以根据用户需要从互联网上自动搜集到主题相关信息，在主题搜索引擎、站点结构分析等方面取得越来越广泛的应用。
Focused crawler is a subject-oriented information retrieval system. It can meet the users' need and retrieve information that is relevant to some specific subjects from the web automatically.
提出一种基于个性化信息服务的移动搜索引擎系统，从个性化和系统体系结构分别进行了设计。
A mobile search engine based on personal information service system was raised in this article. We designed in personality and structure of the system.
目前垂直搜索引擎采用与通用全文搜索引擎类似的全文检索系统结构，在专业相关度方面具有相当高的水平。
At present, the vertical search engine adopted the system structure which is similar with the full-text search engine. It had high level in the professional association degree.
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