Trust-Oriented Composite Service Selection with QoS Constraints

Lei Li (Macquarie University, Australia)

Yan Wang (Macquarie University, Australia)

Ee-Peng Lim (Singapore Management University, Singapore)

Abstract: In Service-Oriented Computing (SOC) environments, service clients interact with service providers for consuming services. From the viewpoint of service clients, the trust level of a service or a service provider is a critical factor to consider in service selection, particularlywhen a client is looking for a service from a large set of services or service providers. However, a invoked service may be composed of other services. The complex invocations in composite services greatly increase the complexity of trust-oriented service selection. In this paper, we propose novel approaches for composite service representation, trust evaluation and trust-oriented com-posite service selection (with QoS constraints). Our experimental results illustrate that compared with the existing approaches our proposed trust-oriented (QoS constrained) composite serviceselection algorithms are realistic and enjoy better efficiency.

Keywords: Monte Carlo method, composite service, composite service representation, composite service selection, trust evaluation

Categories: H.3.3,, H.3.5, H.4.m