THE ESTIMATION OF INVOCATION COST FOR COMPOSITE SERVICES

Article type: Research Article

Authors: Wynn, Moe Thandar | Edmond, David | Milliner, Stephen

Affiliations: Research Centre for IT Innovation, Queensland University of Technology, GPO Box 2434, Brisbane QLD 4001, Australia

Abstract: When a new electronic service is composed from existing ones, the characteristics of the component services will naturally have a major influence on both the functional and the non-functional characteristics of the composite service. When more than one service satisfies the specified functional requirements of a given component for a composite service, these services can be differentiated on the basis of their non-functional properties. To ensure proper evaluation of various composition options, we propose to estimate the corresponding non-functional properties of a composite service during design time by taking into account the characteristics of the candidate services and the composition constructs used to integrate these services. In this paper, we describe the specification and estimation of the invocation cost based on different pricing models and the composition constructs possible in the workflow patterns for composite services.

Keywords: electronic services, web services, service composition, non-functional properties, service planning, cost and pricing models, workflow patterns

Journal: Journal of Integrated Design & Process Science, vol. 8, no. 1, pp. 31-47, 2004