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- W2227287493 abstract "� Abstract—Workflow Management Systems (WfMS) allow organizations to streamline and automate business processes and reengineer their structure. One important requirement for this type of system is the management and computation of the Quality of Service (QoS) of processes and workflows. Currently, a range of Web processes and workflow languages exist. Each language can be characterized by the set of patterns they support. Developing and implementing a suitable and generic algorithm to compute the QoS of processes that have been designed using different languages is a difficult task. This is because some patterns are specific to particular process languages and new patterns may be introduced in future versions of a language. In this paper, we describe an adaptive algorithm implemented to cope with these two problems. The algorithm is called adaptive since it can be dynamically changed as the patterns of a process language also change. Keywords—Quality of Service, Web processes, Workflows, Web services. It is highly desirable and important to develop prediction algorithms that could be easily adapted to reflect the patterns present in a process specification language. Adaptable prediction algorithms for QoS computation can be dynamically changed to cope with the introduction of new patterns. The development of such algorithms is the main objective of this paper. This paper is structured as follows. In Section 2, we discuss the basis of algorithms to compute and predict the QoS of processes. Namely, we present a static algorithm which can be used to compute and predict the QoS of processes, the SWR algorithm, and discuss the inherent need for adaptive algorithms. Section 3 discusses the characteristics of static and adaptive QoS prediction algorithms. We present an adaptive version of the SWR algorithm which is more suitable for current WfMSs. Finally, section 4 presents our conclusions." @default.
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- W2227287493 date "2007-01-25" @default.
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- W2227287493 title "Adaptive Algorithm to Predict the QoS of Web Processes and Workflows" @default.
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