Figure 1

Sampling process illustration. For each physical node, the predefined network measure and its standard deviation along time are calculated and only the \(P\) nodes with the highest standard deviation values are selected. In this figure a small example is depicted, where three nodes are selected (in red). \({v}_{{r}_{i}}\), \({v}_{{r}_{j}}\) and \({v}_{{r}_{k}}\).