A Service Selection Model to Improve Composition Reliability

One of the most promising advantages of web service technology is the possibility of creating added-value services by combining existing ones. A key step for composing and executing services lies in the selection of the individual services to use. Much attention has been devoted to appropriate selection of service functionalities, but also the non-functional properties of the services play a key role. Due to ever changing business environment, service users are not guaranteed from unexpected service faults. Service composition can compensate the deficiencies of constituent components aggregating a redundant number of them for individual tasks. This paper proposes a service selection strategy targeting at minimizing the impact of atomic service failure on the quality of service of compositions.