Overview of real networks and the statistical results of their MDSs.

<p><<i>k</i>> is the average degree of a network, <i>n_D</i> is the size of a MDS, <i>λ_D</i> = <i>n_D</i>/<i>N</i>, <<i>k^D</i>> is the average degree of the MDS, is the average value of <<i>k^D</i>> for all of the obtained MDSs, and <<i>k^D</i>_min> and <i>D</i>_max> are the maximum and the minimum values <<i>k^D</i>> of all of the MDSs obtained by the preferential matching method under a different preferential matching number <i>m.</i></p><p>Overview of real networks and the statistical results of their MDSs.