Research of Extracting Data from HTML Web Pages Automatically

摘要

In order to use data information in the Internet,it is necessary to extract data from web pages.An HTT tree model representing HTML pages is presented. Based on the HTT model, a wrapper generationalgorithm AGW is proposed. The AGW algorithm utilizes comparing and correcting technique to generate thewrapper with the native characteristic of the HTT tree structure. The AGW algorithm can not only generate thewrapper automatically, but also rebuild the data schema easily and reduce the complexity of the computing.