Design of a semantic search engine based on the Ontology is one of the search engine design approach. this system framework is divided into four modules, and the overall framework is as follows:
1) Ontology processing module: mainly establish the ontology, encapsulate some operations on ontology, and offer interfaces of ontology operation to each part of the system.
2)Website collection module: collect website information in terms of the concrete crawling strategy, and store them in data base for subsequent operations.
3)Pre-processing module: analyze collected websites, mark the ontology of each website, and establish the inverted index on the marked metadata.
4)Query processing module: mainly provide users with interfaces for them to carry out queries and return results.
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