Technology of Semantic Search Based on Ontology

The technology of Semantic Search,based on ontology,is a kind of technology of search based on semantic web.Compared with the traditional technology of search,it improves the precision of search,reduces the count of results that are no business of the search.The feature of this paper is to create the instance of an entity by using the element of the sentence,then match the instance to the entity it belongs with field ontology created by human.Using the instance index we can achieve the purpose of conceptual retrieval.This paper introduces the basic conceptions of semantic web and ontology first.Then it discusses the main steps and method of the realization of ontology based semantic search.At last it points out the shortage of the method.