2,085 research outputs found
Cloud Services Brokerage: A Survey and Research Roadmap
A Cloud Services Brokerage (CSB) acts as an intermediary between cloud
service providers (e.g., Amazon and Google) and cloud service end users,
providing a number of value adding services. CSBs as a research topic are in
there infancy. The goal of this paper is to provide a concise survey of
existing CSB technologies in a variety of areas and highlight a roadmap, which
details five future opportunities for research.Comment: Paper published in the 8th IEEE International Conference on Cloud
Computing (CLOUD 2015
An Intelligent QoS Identification for Untrustworthy Web Services Via Two-phase Neural Networks
QoS identification for untrustworthy Web services is critical in QoS
management in the service computing since the performance of untrustworthy Web
services may result in QoS downgrade. The key issue is to intelligently learn
the characteristics of trustworthy Web services from different QoS levels, then
to identify the untrustworthy ones according to the characteristics of QoS
metrics. As one of the intelligent identification approaches, deep neural
network has emerged as a powerful technique in recent years. In this paper, we
propose a novel two-phase neural network model to identify the untrustworthy
Web services. In the first phase, Web services are collected from the published
QoS dataset. Then, we design a feedforward neural network model to build the
classifier for Web services with different QoS levels. In the second phase, we
employ a probabilistic neural network (PNN) model to identify the untrustworthy
Web services from each classification. The experimental results show the
proposed approach has 90.5% identification ratio far higher than other
competing approaches.Comment: 8 pages, 5 figure
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