Performance Evaluation Of Service-Oriented Systems
Ansila Henderson, Soja Salim
Keywords : Service-Oriented Architecture (SOA); Quality of Service (QoS) ; Quality Assessment (QA); Service Providers (SP)
ABSTRACT: The exponential development of Web service results in high quality service-oriented systems an urgent and fundamental research problem. The Web services were developed by different organizations and put forward various functionalities and Quality of Service (QoS) values. The selection of a Web service, for each activity of the work flow, meeting the user’s requirement is an important contest. The Quality of Service Management Framework Based on User Expectations assembles the expectations as well as ratings from the users of a service. It analyse the quality of the service only at the time a demand for the service is made and only using the ratings that have similar expectations. The collaborative filtering approach calculates QoS values of Web services. It makes Web service proposal by taking benefits of former usage events of service users. The Transactional and QoS- Aware selection algorithm deals with the concern of choosing and organizing Web services not only according to their functional requirements but also to their operational properties and QoS characteristics. The Web service QoS prediction framework, offers time-aware personalized QoS value prediction service for different service users. The online performance prediction framework predicts performance efficiently at run time.
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