Ontology Based Framework for Web Page Information Extraction

Nature of Web information is dynamic and irregular that’s why it is difficult to search and integrate information from the Web. The biggest task in making WWW data accessible to users/agents is extracting the data from Web pages. We take advantage of information in existing Web pages to creating structured data semi-automatically. Extraction of information from semi-structured or unstructured documents, such as Web pages, is a useful yet complex task. Research has demonstrated that ontology may be used to achieve a high degree of accuracy in data extraction while maintaining resiliency in the face of document changes. . This paper proposes an ontology-based information extraction system and its application to online book store domain. Testing result shows that this algorithm doesn’t rely on the page structure and it can increase the recall and precision of information extraction.