Web information extraction and its application

Information extraction (IE) addresses the problem of extracting specific information from a collection of documents. The work presented in this paper described an approach of design an information extraction system; put forward basic system architecture. Describe the detail steps of web information extraction, such as web page organize, rule generate and result show. Finally, successfully extracted information is placed in an XML template, which has been designed to capture information needed in the teaching-learning system. Although the work presented in this paper was restricted to HTML course outlines, the concepts and methods are easily applied to other different domains.