A Concept Similarity Computation Based on Ontology and its Application

Semantic similarity of concepts is an important content in the field of knowledge representation and information retrieval. This paper puts forward an integrated method based on semantic similarity and semantic relevance,we think about the semantic distance and the characteristics of ontology,the concept's information coincidence degree,the depth of concept,the density of concept and symmetry factor.Compared with two traditional semantic similarity computation methods,this method can better distinguish the different concept in ontology tree and this method is effective.