The Realization of Web Information Extraction Based on XML

摘要

The paper introduces a method of web information extraction based on XML. Firstly, it converts the data from HTML to XHTML with tidy tools, and then locates the anchor which is tied to content by path expression, at last maps extraction result to XML file with XSL. This is a method of converting unstructured data to structured data, which is possible for application program to use data of web. An example is realized about earthquake information extraction. The extraction rules are simple, robust and the codes can be widely adopted.