The aim of the sButler project (Semantic Web Butler), which is part of the Swedish Semantic Web initiative, is to support on-the fly creation of workflows and their subsequent maintenance. The sButler agent will manage workflows and Web services modeled as Petri Nets, use the language facilities provided by the Semantic Web, and employ a new push-and-pull protocol to handle communication with other sButlers. This paper describes the ongoing sButler project at Linkopings universitet, aimed at supporting and maintaining the relation between the workflows of companies/users and existing Web services/providers.
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