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With the development of Service Oriented Computing and the explosive growth of services, QoS (Quality of Service) based service computing, e.g., QoS-based selection and composition, is becoming more and more important. A common premise of previous research is that the QoS values of services to target users are supposed to be all known, while many QoS values are unknown in reality. This paper presents...
In this paper, we propose an enhanced QoS prediction approach to predict the missing QoS values for QoS-based selection. Compared with existing QoS prediction methods, our proposed A Smooth approach has two differences: 1) using A-cosine equation for similarity calculation to remove the impact of different QoS scale, 2) adding a data Smoothing process to improve the prediction accuracy. An extensive...
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