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Because of the flexibility of Web Services and dynamical network, QoS is difficult to be assured of reliability, often causing the Web Service selected and invoked by users are often not working properly, not result in high performance Web service composition. In the composition of services for service selection, in order to improve the reliability and performance of composite services need to consider...
As the Web Services technology is widely used in the enterprise's core business, how to manage these resources is becoming to extremely important problem. In this paper, after analysising the characteristics of resouce management in distributed environment and the main content of WSDM, a novel Web Service management scheme is introduced, and then the main components in the scheme is introduced, as...
With the application of Composite Web Service becoming universality, the importance of Web service discovering are becoming increasingly. The paper presents a Web services discovery model framework based on the requirements of Web service discovery. The QoS properties of Web services are as the Calculating basis for the dynamic genetic algorithm in the framework, and the Dynamic genetic algorithm...
As the particle swarm optimization (PSO) algorithm has some deficiencies such as slow convergence and easy to fall into the local extreme value in some circumstances, this paper presents an improved particle swarm optimization with a new inertia weight. In different stages of the algorithm run, a corresponding formula is used to calculate the inertia weight. In Addition, adaptive mutation and linear-changed...
With more and more applications are developed by Web services, the importance of QoS for Web services combination are becoming increasingly. According to the problems about process of developing Web services and QoS global optimization of Web services composition, the paper design and implement a QoS-based Web service combination framework which supports the visualization modeling and the process...
Service Oriented Architecture enable a multitude of service providers to provide loosely, coupled and interoperable services at different Quality of Service (QoS), As more and more Web services become available, QoS is becoming a decisive factor to distinguishing composite Web services. Composite Web service selection with global QoS constraints is clearly a NP-Hard problem, in this paper, a new optimization...
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