Research On Evolution Of Dynamic Service-flow And Its Key Technologies

As the information society comes to us today, the style of human lives has being changed by those Internet-based applications. The Internet is now undergoing an evolution from a simple platform for information sharing to an open cloud computing environment. More and more data resources, computing resources and applications accessible via the Internet are integrated into network resources for public usage.In recent years, people have not satisfied with a single Web services applications, the research begins to focus on how to integrate some Web services into a more powerful service, which is the integration of Web services. There are some different points in this topic as follows: the first view is addressing the coordination of services in the multi-Agent system. After the ontology is constructed in the internal structure, the integration of web services is made by the interaction between the agents. The second view is from the management of the traditional workflow. It discusses the successful experience of traditional workflow, extends the definition of workflow to adapt to the dynamic, loosely coupled and distributed Web services, and achieves the deployment of dynamic flow to meet the needs of users and environmental change. The third view is the Semantic Web, which inducts semantics into web services composition.In this thesis, the definition of Dynamic Web Service Flow Nets (DWSF_net) is provided. In order to meet the idea of "local self-government, centralized management", the dynamic model of service flow is given based on the regional autonomy. The attribute expression separation algorithm is designed to ensure the flow of sensitive information security. For the purpose of the evolution of the DWSF_net, this thesis introduces the data mining technology into services log on-line mining, and those service logs are formed as the XML standard. The pivotal autonomic areas of service-flow would be automatically replaced, split or merged by agent, which improves the quality of service, reduces operational costs, and balances the cost of services and QoS flow purposes. It would give the users optimal services. In the evolution of the realization of the DWSF, this thesis puts forward a modified genetic algorithm to select the sub services from the back-up list, which achieves good results.