Based on the analysis of information extraction process and the structure of product web page, a product information extraction model based on DOM tree is established.
在分析信息抽取过程和商品网页结构的基础上，构建了基于网页DOM树的商品供应信息抽取模型。
In the detailed design phase, according to the results of the analysis on the overall organization of specific page, and database structure design.
在细致设计阶段，根据总体剖析地成果，停止详细页面地组织和数据库构造地设计。
Page quality estimation in the search engine has a crucial role, and the traditional method is based on hyperlink structure analysis.
页面质量评估在搜索引擎系统中具有极其关键的作用， 传统的方法是基于页面链接关系进行页面质量评估。
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