A Closed-Loop Mechanism for Service Evaluating and Discovering on the Internet

In this paper, we analyze the problems of existing Service Computing model and propose a closed-loop mechanism for service evaluating and discovering on the Internet which is not only compatible with the basic principles of Service Computing--loosely coupled, protocol independent and location transparent, but also can rank, classify and recommend services based on their real-time performance. This mechanism facilitates dynamic service discovery and substitution which is the core of service computing since it improves the availability, scalability, and modifiability of service-based applications.