Web信息抽取研究

在分析当前一些主流的wrapper技术的基础上,提出了一个基于移动Agent的Web信息抽取系统框架。在该框架中,利用移动Agent所具有的自治性、移动性、交互性和智能性,将数据抽取和转换任务交给移动Agent,让其移动到Web数据源上去完成信息抽取任务,并将抽取结果传回。这样不但可以减少数据传输量,节约网络带宽,降低响应时间;还可以减少对网络的依赖性,允许网络的间断连接。

Research of Web Information Extraction

A web information extraction framework based on mobile agent is presented that analyses some existed technology of current wrapper. In the framework, the autonomy?mobility?interactivity and intelligence of mobile agent are employed to extract data and transform data, and are dispatched to web data sources for accomplishing the task of information extraction, the extraction results are transmitted back by mobile agent finally. In this way, It can not only reduces the quantity of data transmission, saves network bandwidth, and reduces response time; but also reduces the dependence on network and allows discontinued connection of network.