Ontology Clarification by Using Semantic Disambiguation
Lei Guo, Xiaodong Wang, Jun Fang · 2008
Semantic Web technology highly depends on the quality of ontology. In order to enhance quality of ontology, a vast amount of research has focused on concept modeling task, but there is one major problem with lexical representation of ontology. Current lexical representation is term which may have different meanings, so as to result in frustrating misunderstanding and ambiguity during the application of ontology. To solve this problem, sense is used to replace term as the lexical representation of concepts and properties for its unique meaning. Ontology clarification is the process of disambiguating terms in ontology by using its surrounding ontology elements and its nearby terms in annotated documents using this ontology. The right sense is assigned to a target term by maximizing the relatedness between the target and its neighbors for semantic relatedness between them. Experiments show our ontology clarification method is valid. Comparing with the best word sense disambiguation method, the concept precision is almost 2 times than the precision of noun, and the property precision is almost 3 times than the precision of verb. Another experiment proves that our method is also effective in a semi-automatic process.