Research on domain ontology-based concept semantic similarity computation

Three kinds of traditional concept semantic similarity computation models based on the domain ontology is introduced.In al-lusion to the advantages and disadvantages of the three kinds of computation models,as well as the peculiar characteristic of domain on-tology,an improved domain ontology-based concept semantic similarity computation model is put forward.It is proved that the com-putation model can be used to calculate the concepts and property similarity which is defined in ontology constructors,and help to extend the query concepts sets and rate query results in semantic retrieval system,and provide an effective quantification between concepts.