Adept_flex—Supporting Dynamic Changes of Workflows Without Losing Control
Journal of Intelligent Information Systems - Special issue on workflow management systems
Agents for process coherence in virtual enterprises
Communications of the ACM
Specification and implementation of exceptions in workflow management systems
ACM Transactions on Database Systems (TODS)
Business-oriented management of Web services
Communications of the ACM - Service-oriented computing
Implementing Exception Handling Policies for Workflow Management System
APSEC '03 Proceedings of the Tenth Asia-Pacific Software Engineering Conference Software Engineering Conference
Formalizing and achieving multiparty agreements via commitments
Proceedings of the fourth international joint conference on Autonomous agents and multiagent systems
A Rule Driven Approach for Developing Adaptive Service Oriented Business Collaboration
SCC '06 Proceedings of the IEEE International Conference on Services Computing
Automated Context-Aware Adaptation of Web Service Executions
AICCSA '06 Proceedings of the IEEE International Conference on Computer Systems and Applications
Human-Computer Interaction
Modeling web service composition and execution via a requirements-driven approach
Proceedings of the 2007 ACM symposium on Applied computing
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The increasing popularity of Web services for application integration has resulted in a large body of research on Web service composition. However, the major lacuna so far in Web service composition is the lack of a holistic requirements-driven approach for modeling the entire Web service lifecycle, i.e., composition, joint execution, midstream adaptation in response to failures or changing requirements, and finally re-execution until successful completion. In this paper we present such an approach based on our earlier work on context-driven Web service modeling. In particular, we separate requirements into two parts – functional and extra-functional requirements (FRs and EFRs, respectively). We express FRs as commitments made by individual Web services towards the composite Web service, and EFRs as rules that constrain the behavior of the individual Web services while they execute against their FRs. We also show how midstream adaptation in Web service execution – caused either by changes in user requirements or execution failures – can be managed in our approach. We believe that ours is the first such approach towards a comprehensive modeling of requirements for composite Web service executions, and especially during adaptation.