网络嵌入价值视角下信息中介服务进入决策

研究了信息中介的服务与决策者构成的复杂网络之间的相互作用,提出了网络嵌入价值VNE,同时考虑网络收益与中介收益标度既可用于评价服务对于网络的价值,也可为信息中介决策提供依据.在中介和网络间建立了一个博弈模型,得到了中介服务能生存于网络中的条件.在此基础上定义了信息中介的网络嵌入价值,从网络的视角考察了中介服务进入市场的成本C和价格P的决策.最后比较了ER网络(随机网络)与SF网络(无标度网络)这两种不同网络结构下网络嵌入价值与决策的差异.

Entrant decision of information intermediary service in perspective of network embedded value

A novel approach is proposed that leads to the design and evolution of a scale-free network that satisfies any given power-law distribution.The approach makes use of another important feature of the scale-free network: the final formation of a scale-free network is controlled by the geometric mean of its degrees.Therefore,an algorithm is provided: starting from a rational small-world network,continuously deleting or adding an edge from or to the network by the "rich get richer" principle,meanwhile keeping the total number of nodes,the total number of edges and the connectivity of the network unchanged,until the geometric mean of the degrees of the network reaches a certain value,a prerequisite scale-free network will be formed.Numerical simulations show that the above algorithm can always lead to the evolution of a scale-free network that satisfies any given power-law distribution.