QoS-Aware Service Composition for Complex Workflows
Key: SEM+10-1
Author: Dieter Schuller, Julian Eckert, André Miede, Stefan Schulte, Ralf Steinmetz
Date: May 2010
Kind: In proceedings
Publisher: IEEE
Book title: Proceedings of the Fifth International Conference on Internet and Web Applications and Services (ICIW 2010), Barcelona, Spain
Keywords: Optimization; Service Selection; Quality of Service; Complex Workflows
Abstract: In Service-oriented Architectures, business processes are realized by composing loosely coupled services. With the ongoing success of Web services technologies, the invocation of Web services goes beyond enterprises’ borders. So, besides implementing required services within the own enterprise, services can be purchased from external service providers. With a growing amount and variety of services, enterprises can choose between functionally equivalent services at different cost and quality levels. The paper at hand addresses this service selection problem considering complex workflow patterns. Aggregation functions for different quality of service parameters are proposed and a linear optimization problem is formulated, which can be solved using linear programming techniques or by applying heuristical solutions.
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