Extended Evaluation for Quality of Service in the Community of Web Service

When Web service evaluation attributes involve beyond service domain, they aren´t credible or unable to get, if they only come from service domain. In this article, extended evaluation model for quality of service in the community of Web service is presented. In the model, Web service community is set up, and main service in the community can associate this domain with other domain. Evaluation tree and evaluation forest are defined, which makes it possible to correctly evaluate service in different domain. A new TFAHP which has fuzzy evaluation adjustment attribute is proposed, and approach of fuzzy comprehensive evaluation is improved. At the same time based on combination of them, a new evaluation algorithm to the model is created. The model improves reliability of the evaluation.