A platform to support decentralized and dynamically distributed P2P composite OWL-S service execution

ABSTRACT

In a large variety of applications, it is increasingly important to provide application functionality in a modular way by means of (Web) services. At the same time, pre-defined applications are no longer suitable to cope with the high functional dynamics that can be found in novel e-business, e-health, and e-science applications. In contrast, dynamic application creation, i.e., applications that are assembled ad hoc by service composition and usually instantiated very few times, are more and more becoming prevalent. Form a systems point of view, large scale application environments like the Internet create scalability requirements towards distributed execution of composite (Web) services which go beyond the traditional non-distributed approach to manage composite services.

The contribution of this paper is threefold. First, we present a novel approach that combines those aspects by using different technologies in a distributed environment to dynamically distribute composite service execution in situations where it is beneficial or required. Second, the approach considers semantic annotation of services to facilitate new possibilities for data and service co-ordination. Third, the approach also incorporates the interfaces needed to integrate service execution with semantic service composition planners to allow for dynamic forward failure recovery by contingency service re-planning. These concepts are currently developed on the basis of the peer-to-peer platform OSIRIS NEXT which supports dynamically distributed and decentralized execution of composite semantic services that are described based on OWL-S.

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INDEX TERMS

Primary Classification:
  H. Information Systems
  H.4 INFORMATION SYSTEMS APPLICATIONS
      H.4.0 General

Keywords:
OWL-S, P2P, process management, semantic service