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One of the key features of cloud computing is on demand resource provision. Unfortunately, different cloud service providers often have different standards, which makes the job of choosing the suitable resource to be a very difficult one for the common users. Then the technology of service broker came out which is designed to choose the appropriate services among different providers to meet the user's...
In this paper, we propose an approach to select top-k cloud services. Our approach combines the trust, determined by the reputation of the provider, and the QoS. We present different algorithms for processing such selection queries and evaluate them through a set of experiments.
Demand-prediction based resource provisioning schemes help assure service level objectives (SLO) in cloud systems. We notice that if a provisioning scheme does not exclude bursts from historical resource demands in normal demand prediction or always uses a large padding to correct under-prediction, it will lead to resource over-provisioning and low resource utilization. To improve the previous schemes,...
During the conservation of energy in Cloud Computing, server consolidation comes as a well-known process to achieve maximum utilization of resources with the least number of servers active. In this process of server consolidation, the Virtual Machine (VM) migration acts as the backbone where VMs are made to transfer the workload from one server to the other, provided Quality of Service (QoS) does...
Network Function Virtualization (NFV) is a promising technology that promises to significantly reduce the operational costs of network services by deploying virtualized network functions (VNFs) to commodity servers in place of dedicated hardware middleboxes. The VNFs are typically running on virtual machine instances in a cloud infrastructure, where the virtualization technology enables dynamic provisioning...
The problem of efficient querying large amount of linked data using Map-Reduce is investigated in this paper. The proposed approach is based on the following assumptions: a) Data graphs are arbitrarily partitioned in the distributed file system is such a way that replication of data triples between the data segments is allowed. b) Data triples are replicated is such a way that answers to a special...
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