Flexible Composition of Enterprise Web Services

The process-based composition of Web services is emerging as a promising approach to automate business process within and across organizational boundaries. In this approach, individual Web services are federated into composite Web services whose business logic is expressed as a process model. Business process automation technology such as workflow management systems (WFMSs) can be used to choreograph the component services. However, one of the fundamental assumptions of most WFMSs is that workflow schemas are static and predefined. Such an assumption is impractical for business processes that have an explosive number of options, or dynamic business processes that must be generated and altered on the fly to meet rapid changing business conditions. In this paper, we describe a rule inference framework called DY flow , where end users declaratively define their business objectives or goals and the system dynamically composes Web services

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