Research On Semantic Service Discovery Based On Qos

The development of the Internet is changing with the passing day,and new technologies are emerging one after another.However,in the current situation of numerous platforms and different equipments,the concept of service-oriented has been paid attention to and developed rapidly.Service computing is a technology that applies a service-oriented architecture that eliminates the innovative technologies of different developers and various organizations and supports and promotes the development of cloud computing technologies.Because of the multi-platform nature of the Internet,Web services are transparent,cross-platform,language-independent,and loosely coupled.These features have led to a rapid increase in the number of Web services,which has also led to service discovery problems.In addition,Web services with semantic features are the direction of Web services development.Quality of Service,or QOS,is an indicator of the non-functional nature of Web services.This metric is used to meet customer needs for non-functional features,and service-oriented systems are highly dependent on the quality of the Web services being used.The main work of this paper is as follows:Firstly,the characteristics of Web services and the characteristics of QoS are studied,and a method for tracking QoS of Web services is proposed.Use the crawler to search the web for the URL and service description of the web service,and use the QoS model to track the value of the QoS parameter.Secondly,a method for automatically calculating the parameter values of the QoS parameters of the Web service is proposed.Different parameters are processed differently for different QoS values,and the parameter values are calculated,and the price factor is used to evaluate the service.Thirdly,a QoS-based semantic service discovery system is designed according to the proposed method and semantic matching method,and named as SWSD system.And use WordNet to calculate semantic similarity for service retrieval.Through the above algorithm,the system returns a Web service with the appropriate QoS value when querying the Web service.Through experiments,we have proved that the proposed method has a better effect than other methods.The method proposed in this paper has certain significance for the study of non-functional attributes in service computing.