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Network Topology and the Dynamics of Collective Action

Network Topology and the Dynamics of Collective Action. Michael Macy, Cornell University with Damon Centola, Cornell University and Víctor M. Eguíluz, Instituto Mediterráneo de Estudios Avanzados. Three components. 1. Computational models of cascades in small world networks

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Network Topology and the Dynamics of Collective Action

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  1. Network Topology and the Dynamics of Collective Action Michael Macy, Cornell University with Damon Centola, Cornell University and Víctor M. Eguíluz, Instituto Mediterráneo de Estudios Avanzados Human and Social Dynamics Principal Investiagators Meeting 9-16-2005

  2. Three components 1. Computational models of cascades in small world networks 2. Interdisciplinary graduate seminar 3. International workshop on “Games, Cascades, and Networks,” New York City, October 7-9, 2005 Human and Social Dynamics Principal Investiagators Meeting 9-16-2005

  3. A Surprising Finding… • Previous studies: a few random ties allow disease to spread as quickly on clustered networks as on a purely random network. • But many social contagions require exposure to multiple sources of activation. • Does the “small world” principle generalize from epidemics to diffusion of behavioral changes promoted by public health policies? Human and Social Dynamics Principal Investiagators Meeting 9-16-2005

  4. Effects of Random Ties on Diffusion Effects of rewiring on propagation rate, by threshold T Disease or information Complex contagion Behavior change

  5. “Games, Networks, and Cascades” • Physicists, mathematicians, computer scientists, economists, and sociologists • The Netherlands, UK, Spain, Italy, and the United States Human and Social Dynamics Principal Investiagators Meeting 9-16-2005

  6. Time’s Up! "In the future, everybody will be famous for 15 3 minutes." -- Andy Warhol Human and Social Dynamics Principal Investiagators Meeting 9-16-2005

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