Query And Reason For Semantic Grid Based On Ontology

With the rapid development of the Internet, the grid, as a network fundamental facility for information society, implements to roundly connect, unified distribute, manage and harmonize the resources located in different places. Its advantages consist in not only its exceeding data management capacity, but also it can fully use the idle capacity to economize the computing cost to realize the resource sharing and eliminate the resource isolations.Meanwhile, Traditional search engine based on full-text indexing tries to find out the documents in which the keywords occurred. It neglects semantic relations of the keywords, which causes less precise and recall ratio. So, this kind of mode cannot meat the command of the uses. Semantic Web has make up for the shorting of lack of semantic information, and extends the semantic information that can be dealt with by the computer for the web pages. In the semantic web, all of the resources are endowed with different definite semantic information. Computers can differentiate and recognize the information and then interpret, exchange and deal with them automatically.Combining the advantages of semantic web, grid and web service and the disadvantages of them, the researchers have put forward the concept of semantic grid. Gird promotes the computing capacity of the web, while semantic grid extends the semantic capacity of the grid. Form another point of view, semantic web enhances the semantic capacity of the current web, while semantic grid extends the computing...