QoS parameter calculation method for Web services selection
Bo Wang · Computer Engineering and Applications Journal · 2011
A QoS parameter calculation method for Web services is presented in order to reduce the influence of the malicious evaluation from users and minimize the amount of false data provided by service providers and guarantee the authenticity of QoS parameters.A method that is used to compute parameters from Web service providers is induced from the Sproas trust model while the parameters of load of Web service and state are introduced to calculate the parameters from service providers.Through the simulation experiments and analysis,the results show that compared with other methods the stability of parameters from service providers are improved by 22.9% and the influences made by users’malicious evaluation are reduced more effectively.Meanwhile,the parameters from service provider are improved by an average of 16.7% and more close to actual value than the comparison method while the influence comes from false data from service publishers can be weakened apparently and the load balancing of Web service can be improved as well.