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Table 1 List of mathematical notations

From: A proactive resource allocation method based on adaptive prediction of resource requests in cloud computing

Symbol Annotation Symbol Annotation
\(T_{th}\) The predefined threshold of main types of VMs \(Q1\) First quartile
\(Q3\) Third quartile IQR Interquartile range
\(M(t)\) Current number of VM requests at \(t\) time \(D(t + h)\) The predicted number of VM requests at \(t + h\) time
\(N(t)\) The total number of VM requests at \(t\) time \(x_{ij}\) The mapping element between a VM and a PM
\(MD_{ij}\) Resource performance matching distance \(MPM_{ij}\) resource proportion matching distance