Research of The Web Service Automatic Composition based on Generalized Stochastic Petri Nets

Web services need to be orchestrated to achieve complex demand. However, existing approaches on Web service composition are mainly based on syntax match. It is very difficult to compose heterogeneous Web services with syntax in accord with function. Gradually, Petri net becomes a powerful system modeling and analysis tools research discrete event dynamic system. In order to solve this problem, we present a method to compose Web services automatically based on generalized stochastic Petri nets. Firstly, the generalized stochastic Petri nets (GSPN) and OWL-S composition process are used to model the automatic composition process, and then the Web service composition is realized. Finally, the feasibility of this method is demonstrated though the analyses of a case study with a booking service system. Compared with the existing methods of Web service composition, this method can describe Web service automatic composition more effectively.