Agile Services Oriented Virtualization of Web Services

Problem Solving Environments (PSEs) for Virtual Organizations (VOs) are usually constructed on distributed resources. Thus, Web services are widely adopted to deliver resources in PSEs. To enable users to handle services efficiently, a mechanism of service virtualization to provide a relatively stable service view for users is proposed based on Agile Services. The algorithm of matchmaking is discussed to make Agile Services executable by binding Web services with expected functions to them. The approach to service filtering is also introduced to make service matchmaking more efficient. Experiments and simulations indicate that the approach proposed in the paper can shield the diversities of Web services to users and be adaptive to the variability of requirements, and eventually improve the efficiency for users to handle Web services.