Web service composition market decision model based on grey situation decision-making

With the rapid development of internet, web service composition has brought huge spaces to both service providers and web service integrators. It also has increased the interests of customers and has created value for them. Grey situation decision is one of the most important decision-making methods in grey system theory. It is a decision analysis method that considers four factors together such as event, countermeasure, effect and target. In order to solve the problem of the non-differentiation selection strategy for Web Service Integrator, this paper uses grey situation decision model to analyze the course of selecting service providers that provide different functional services for Web service composition, and provides a theoretical guidance to the selection of service providers for Web Service Integrator in Web service composition market.