Unstructured information organization based on ontology

This paper proposes the method to develop domain ontology's DB, based on the ontology's DB, utilizes ontology's to annotate unstructured information and translate unstructured information into structured information, so that facilitates the retrieval of unstructured information. The experiment results show that rule-based retrieval has better recall and shorter retrieval time than fact-based retrieval and relationship -based retrieval.

I. Introduction(Heading 1)

The semantic Web is ideal for sharing and exchanging information by means of semantic searches of the semantically described pages and resources which are available online. Ontology is one of the mechanisms for semantically describing web-accessible unstructured information. Annotations are another mechanism which has also been proposed for this purpose. There are a wide variety of resources available on the Web (whether semantically described or not) including