  In this paper, we compare the number of unmatched nodes and the size of
dilations in two main random network models, the Scale-Free and Clustered
Scale-Free networks. The number of unmatched nodes determines the necessary
number of control inputs and is known to be a measure for network
controllability, while the size of dilation is a measure of controllability
recovery in case of control input failure. Our results show that clustered
version of Scale-Free networks require fewer control inputs for
controllability. Further, the average size of dilations is smaller in clustered
Scale-Free networks, implying that potentially fewer options for
controllability recovery are available.
