Publications

Authors

F. Karatas and D. Kesdogan

Abstract

Current Quality of Service (QoS) models for service compositions are considering security either as a single QoS attribute (measured in abstract units of security) or as a number of independent attributes such as uptime probability. In the face of numerous interdependent protection goals, either general or domain-dependent, this approach is insuf- cient to capture most real-world scenarios adequately. To cope with this limitation, we introduce in this paper our approach of modeling protection goals as interdependent utility functions over QoS attributes. Furthermore, we present a prototypical tool which supports domain experts in de ning QoS- and domain models of any complexity as well as decision makers in nding near-optimal service compositions based on these models.