Data based investigations require modifications of the typical scale-free network. We present an algorithm that generates networks in which the shape of the degree distribution is tunable by modifying the preferential attachment step of the Barab谩si-Albert construction algorithm. The shape of the ...
2. power-law、scale-free和厚尾分布的简要说明 在Barabasi和Albert关于power-law度分布的工作中,他们将所有节点的度值组成一个度序列(degree sequence),并统计不同节点度值所占的比重就可以得到度分布(degree distribution),Barabasi和Albert惊讶地发现不同网络的度分布在log-log坐标系下均呈现近似线性的排布,即power...
The Role of the Degree Exponent(度指数即γ) 在scale-free network中γ的作用 kmax=kmin∗N1γ−1(1) Anomalous Regime (1<γ≤ 2)(反常区域) 当1<γ<2时,N1γ−1～∞,故kmax～∞ 当γ=2时,kmax>=N 故在此区域内,kmax>=N,即所有节点都连接到了一个hub上,这是在scale-free 网络中不存...
Scale-Free NetworkNode Degree DistributionIn thispaper, we first analyze the evolution of the logistics distribution network graduallyfrom the simple to the complex, mainly based on distribution network and atypical third party logistics enterprise, establishing the relationship amongnodes in the network....
Scale Free NetworksPower law networks Complex network, power law, scale free, small world Networks or graphs are called scale free when their degree distribution, i.e., the distribution of the number of nodes that have...doi:10.1007/978-3-642-11274-4_1405Lenaerts, Tom...
Scale-free networks are networks with a scale-free degree distribution, i.e., where the distribution of the number of links per node is a power-law, p(k)=ck -λ . We review results for the properties of such networks, emphasizing the structural propertie
Scale-free networks are noteworthy because many empirically observed networks appear to be scale-free, including the protein networks, citation networks, and some social networks. 展开 关键词: scale-free network complex network Degree Distribution Power law Preferential Attachment Derek J. de Solla ...
So the BA model is better than the WS model at reproducing the degree distribution. But does it have the small world property? In this example, the average path length,L, is 2.5, which is even more “small world” than the actual network, which hasL=3.69. So that’s good, although ...
Scale-Free Networks Are Ultrasmall We study the diameter, or the mean distance between sites, in a scale-free network, having N sites and degree distribution p(k) proportional, variant k(-la... R Cohen,S Havlin - 《Physical Review Letters》 被引量: 1243发表: 2003年 Scale-free networks ...
The displayed degree distribution (in a log-log scale) for various attack information perfection parameter α in a random scale-free network. The degree distribution follows p d (k) = (λ − 1)m λ−1 k −λ, where N = 1000, λ = 2.5 and m = 2. The ...