摘要： 介绍了一种新的Web信息抽取器,该抽取器基于扩展标记图模型,实现了数据和模式的分离,应用于Web检索系统中,能够有效地支持标记级实时信息检索、抽取和重组。还介绍了其在Web信息检索系统PowerSearcher中的实际应用。

关键词: Web信息抽取器, 扩展标记图, 半结构数据, Web检索

Abstract: A new Web information extractor is discussed. It is based on extend tag graph (ETG), and has the ability to separate the data from the pattern data. This extractor is used in Web information retrieval, with supporting effective real-time information retrieval, extract and reform in tag level inside the Web page. Besides the design of the extractor, it also discusses its practice in experimental system.

中图分类号: 

• TP393.09