Diffusion in complex social networks

• 成果类型: Article
• 署名作者: Lopez-Pintado, Dunia
• 署名单位: Autonomous University of Barcelona
• 刊物名称: GAMES AND ECONOMIC BEHAVIOR
• ISSN/ISSBN: 0899-8256
• DOI: 10.1016/j.geb.2007.08.001
• 发表日期: 2008
• 页码: 573-590
• 关键词: Social networks; diffusion; mean-field theory; connectivity; hysteresis

摘要

This paper studies how a behavior spreads in a population. We consider a network of interacting agents whose actions are determined by the actions of their neighbors, according to a simple diffusion rule. We find, using a mean-field approach, the threshold for the spreading rate above which the behavior spreads and becomes persistent in the population. This threshold crucially depends on the connectivity distribution of the social network and on specific features of the diffusion rule. (c) 2007 Elsevier Inc. All rights reserved.