Research On Web Service Discovery Method Based On QoS

With the growing number of Web Services provide the same functionality in the internet, how to find Web Services that best meet the needs of service requesters become a hot research in the service computing fields. Current research that concerned about QoS-based Web Service discovery research still has some shortcomings and deficiencies, there are many problems to be solved for a mature QoS-based Web Service architecture, service discovery and matching methods.To solve the above problems, we research Web Service discovery methods based QoS in this paper. The specific content is as follows.First, the typical Web Service using Service-Oriented Architecture leading to users can't invoke service effectively for it hasn't any type of Web Service QoS model,for this problem, we impose a QoS-based Web Service discovery model, increase the QoS proxy module and extend the traditional SOA schema to suport QoS-based service publish and discovery.Second, in order to ensure the credibility and dynamic of QoS data, we introduce user evaluation mechanism, calibrate the quality of Web Service according to feedback from the users which have invoked service, introduce feedback of the similar needs of user requirements and the recent feedback of users, then corrected QoS of registered Web Service information based on these to ensure the QoS credibility. An approach is described to measure the QoS data based on users'feedback, and a QoS-based Web Service discovery algorithm is also proposed.Finally, it also gives the analysis and verification to the experimental results which are mentioned in this paper. Subsequently, it also makes the prospects for the future research.