In this information-exploding era, the user expects to spend short time retrieving really useful information rather than spending plenty of time and ending up with lots of garbage information. The purpose of this paper is firstly to highlight the problems that hamper the application of agents and web services separately. Our contribution is an overall solution based on a fully-fledged architecture and proof-of-concept implementation that serves as a meeting point for both service consumers and service providers through a simple web-based graphical ontology. The experiments show the algorithm could flexibly and dynamically discover resources and therefore provide a valuable addition to the field.

Web Services Business Process Execution Language (BPEL) modeling technique based on colored Petri net is proposed in this paper. Introduce a BPEL modeling principle based on colored Petri net, and a method of generating BPEL code from the colored Petri net. CPN Tools is used to build the colored Petri net model. At last, the case study of booking ticket was provided to illustrate the applicability of the transformation algorithm. The generated BPEL can run on Oracle BPEL server.