An Improved Semantic Annotation Method of Web Services Based on Ontology

As the foundation of service discovery, match, and composition, the solution to semantic description of Web services is the primary issue in semantic Web services. Aiming at adding semantic description to Web services, and solving problems of similarity calculations in Web services semantic annotation, an improved annotation method was developed: using similarities between WSDL and ontology to annotate services. The method improves similarity algorithms from two aspects: on one hand, the most-related concepts are filtered out according to name similarities between concepts so as to reduce the computational work; on the other, setting different weights to different sub-concepts to raise the accuracy of the structural similarity algorithm. Tests annotating dozens of WSDL in weather has an accuracy of 82.5%.