Delivering Web Service Coordination Capability to Users

Abstract

As web service technology matures there is growing interest in exploiting workflow techniques to coordinate web services. Bioinformaticians are a user community who combine web resources to perform in silico experiments. These users are scientists and not information technology experts; they require workflow solutions that have a low cost of entry for service users and providers. Problems satisfying these requirements with current techniques led to the development of the Simple conceptual unified flow language (Scufl). Scufl is supported by the Freefluo enactment engine [1], and the Taverna editing workbench [3]. The extensibility of Scufl, supported by these tools, means that workflows and the use of web services can be matched to how users view their problems. The Taverna workbench exploits the web to keep Scufl simple by retrieving detail from URIs when required, and by scavenging the web for services. Scufl and its tools are not bioinformatics specific. They can be exploited by other communities who require user-driven composition and execution of workflows coordinating web resources.

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