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Service selection and composition are important issues to realize IT-enabled service systems. Service stakeholders obtain different service values in the solutions of service selection and composition with the same function but different QoS. The service value achieved from service systems is a critical factor to evaluate and to select the suitable services for the solution of service selection and...
Value is considered as the ultimate goal of a good service, and whether and to what degree the expected value could be delivered to customers and providers depends on capacities and quality of various functional service elements in service system. Different elements have different contributions to the value production. Due to the limit of available service components to construct the service system,...
We present a value-driven approach capable of determining the global optimization objective of service composition to satisfy high-level value expectations. In traditional service composition methods, global and local QoS requirements and constraints are directly raised by customers, then a set of service components (web services) are selected to achieve the optimized QoS. Yet in practice, there is...
Service modeling is a critical step in describing customer requirements and designing service systems. The quality of service models determines the quality of service systems to a great extent. To analyze the service models in a way that would show deficiencies in delivering service values, we propose the idea of "value annotation" by which expected values are labeled on the functional elements...
VASEM is a methodology to be aware of service values among participants and to analyze values' relationship to direct service system design. Value model is an important part in VASEM, and is foundation of value analysis. Ocean Transportation Service is a typical service system. Take it as a case, we verify the usability of value model in a certain field. We analyze the values in Ocean Transportation...
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