Automated Situation-Aware Service Composition in Service-Oriented Computing

Automated Situation-Aware Service Composition in Service-Oriented Computing

S.S. Yau, H. Davulcu, S. Mukhopadhyay, D. Huang, H. Gong, P. Singh, F. Gelgi
Copyright: © 2007 |Pages: 24
DOI: 10.4018/jwsr.2007100103
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Abstract

Service-based systems have many applications, such as e-business, health care, and homeland security. In these systems, it is necessary to provide users the capability of composing services into workflows providing higher-level functionality. In dynamic service-oriented computing environments, it is desirable that service composition is automated and situation-aware to generate robust and adaptive workflows. In this paper, an automated situation-aware service composition approach is presented. This approach is based on the a-logic, a-calculus, and a declarative model for situation awareness (SAW). This approach consists of four major components: (1) analyzing SAW requirements using our SAW model, (2) translating our SAW model representation to a-logic specifications and specifying a control flow graph in a-logic as the service composition goal, (3) automated synthesis of a-calculus terms defining situation-aware workflow agents based on a-logic specifications for SAW requirements and the control flow graph, and (4) compilation of a-calculus terms to executable components.

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