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With the incessant growth of web services on the Internet, how to design effective web service recommendation technologies based on Quality of Service (QoS) is becoming more and more important. Web service recommendation can relieve users from tough work on service selection and improve the efficiency of developing service-oriented applications. Neighborhood-based collaborative filtering has been...
Quality of Service (QoS) has been widely used for personalized Web service recommendation. Since QoS information usually cannot be predetermined, how to make personalized QoS prediction precisely becomes a challenge of Web service recommendation. Time series forecasting and collaborative filtering are two mainstream technologies for QoS prediction. However, on one hand, existing time series forecasting...
Cloud computing is known as a new computing paradigm that utilizes existing cloud services as fundamental elements for developing distributed applications based on the so-called “use, not own” manner. A dependency is a relation between services wherein a change to one of the services implies a potential change to the others. In this paper, services are classified into three layers in accordance with...
Virtual Machine Placement (VMP) is critical for resource management in data centers. Network traffic and availability of VMs are key factors should be considered in VMP. The Shadow-Based Solution (SBS) guarantees the high-availability goals of VMP. However, the resource constraints of SBS are not applicable to network capacity. To solve this problem, we proposed a shadow-based VMP model with network...
Intensity model with blur effects are widely employed to accurately simulate the imaging process of a star simulator used for attitude determination and guiding feedback. The model is computationally intensive and the time requirements are proportional to the number of stars in the simulation, imposing great demands of computing power for realistic uses. This paper presents two star simulators using...
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