A Method for Calculating the Reliability of Web Services

ABSTRACT

As the number of Web services on the network, a large number of functionally similar Web service appears, choose the best service has become a very difficult problem. According to the credibility of Web service QoS to select the service is a better solution. This paper puts forward a method of calculating the reliability of QoS information. Firstly, use the average value of all the credibility of Web services users have posted as an initial value, then use the weight function to calculate the reliability of QoS information, achieved the change of initial credibility of QoS information is smooth, solved the problems of unstable at the early stage of the algorithm based on statistical principle. The simulation results show that the change of the credibility of various service is relatively smooth, prove the validity of the algorithm.

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