Information Asymmetry Flowing in Complex Network

Shao Chenxi; Hui-Ling Dou; Bing-Hong Wang

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Information Asymmetry Flowing in Complex Network

Shao Chenxi 1 *,Hui-Ling Dou 2 #,Bing-Hong Wang 3

1.Department of Modern Physics and Nonlinear Science Center,University of Science and Technology of China, HeFei 230027

2.Department of Computer Science and Technology,University of Science and Technonlgy of China, Hefei 230027

3.Department of Modern Physics and Nonlinear Science Center,University of Science and Technology of China,Hefei 230027

*Correspondence author

#Submitted by

Subject:

Funding: none

Opened online:15 May 2012

Accepted by: none

Citation: Shao Chenxi ,Hui-Ling Dou,Bing-Hong Wang.Information Asymmetry Flowing in Complex Network[OL]. [15 May 2012] http://en.paper.edu.cn/en_releasepaper/content/4477804

The concept of information asymmetry in complex networks is introduced on the basis of information asymmetry in economics and symmetry breaking. Information flowing between two nodes on a link is bidirectional; its size is closely related to traffic dynamics on the network. Based on asymmetric information theory, we proposed information flow between network nodes is asymmetrical. We designed two methods to calculate the amount of information flow based on two mechanisms of complex network. Unequal flow of two opposite directions on the same link proved information asymmetry exists in the complex network. A complex network evolution model based on symmetry breaking is established，which is a truthful example for complex network mimicking nature. The evolution mechanism of symmetry breaking can best explain the phenomenon of the weak link, long tail theory in complex network.

Keywords:information asymmetry; symmetry breaking; network model

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