Structure Entropy in the Process of Scale-free Network Evolution

Entropy is an important physical variable which describes the non-order of complex system,and many real networks all present the property of scale free.Based on the conception of node entropy and structure entropy,the paper gives the analytical conclusion and numerical simulation.From that,we can obtain that the value of structure entropy scales logarithmically with network size;but the structure entropy of scale-free network is smaller than that of random network under the same size of network.