Exact Solution for Clustering Coefficient of Random Apollonian Networks**Supported by the National Natural Science Foundation of China under Grant No 10675048, the Research Foundation of Education Department of Hubei Province under Grant No Q20121512, and the Natural Science Foundation of Navy University of Engineering under Grant No 201200000033.

Abstract

By means of the series method, we obtain the exact analytical solution of clustering coefficient in random Apollonian networks [Phys. Rev. E 71 (2005) 046141]. Our exact analytical result is identical with the simulation, whereas in the original work, there is a deviation of about 4% between their approximate analytical result and the simulation.