Protocol-Level Service Composition Mismatches: A Petri Net Siphon Based Solution
International Journal of Web Services Research
Petri net based techniques for constructing reliable service composition
Journal of Systems and Software
International Journal of Web Services Research
Colbar: A collaborative location-based regularization framework for QoS prediction
Information Sciences: an International Journal
Analyzing Compatibility of Services via Resource Conformance
Fundamenta Informaticae - Concurrency, Specification and Programming
Service net algebra based on logic Petri nets
Information Sciences: an International Journal
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Business process execution language for Web services (BPEL) is becoming the industrial standard for modeling Web-service-based business processes. Behavioral compatibility for Web service composition is one of the most important topics. The commonly used reachability exploration method focuses on verifying deadlock freeness. When this property is violated, the states and traces in the reachability graph only give clues to redesign the composition. The redesign must then repeat itself until no deadlock is found. In this paper, multiple Web service interaction is modeled with a Petri net called composition net (C-net for short). The problem of behavioral compatibility among Web services is hence transformed into the deadlock structure problem of a C-net. If services are incompatible, a policy based on appending additional information channels is proposed. It is proved that the policy can offer a good solution that can be mapped back into the BPEL models automatically.