Study of Concept Similarity Algorithm between Steel Ontologies

Concepts similarity calculation is the basis for ontology mapping. Vocabulary, meaning of the word, property and instance of concepts are the important facts when calculating concepts similarity. All the facts above are combined and a composite method is proposed to calculate concepts similarity in this paper. In order to keep the effectiveness and comprehensiveness of the method, we combine concepts vocabularies matching algorithm, synonyms basing on Word Net matching algorithm, concepts properties and instances similarities. By calculating test data, the experiment result shows that the method can calculate concepts similarity effectively between two steel ontologies.