Automated Situation-Aware Service Composition in Service-Oriented Computing

Automated Situation-Aware Service Composition in Service-Oriented Computing

S.S. Yau (Arizona State University, USA), H. Davulcu (Arizona State University, USA), S. Mukhopadhyay (Utah State University, USA), D. Huang (Arizona State University, USA), H. Gong (Arizona State University, USA), P. Singh (Arizona State University, USA) and F. Gelgi (Arizona State University, USA)
Copyright: © 2007 |Pages: 24
DOI: 10.4018/jwsr.2007100103
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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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