Trust-Oriented Composite Service Selection with QoS Constraints

Abstract: in service-oriented computing (soc) environments, service clients interact with ser- vice 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, particularly when 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 ser- vices 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 service selection algorithms are realistic and enjoy better efficiency.