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How to model diffusion?
Decision-‐based diffusion models
Collec6ve ac6on [Granove;er 1978]
The model of collec6ve ac6on
Dynamics of collec6ve ac6on
Fragile vs. robust fixed points
Distribu6on of thresholds (trust)
Simula6on
Simula6on
Early adopters!
Innovators!
Early majority!
Late majority!
Laggards!Broadcast!
Contagion!
Weaknesses of the CA model
Decision-‐based diffusion models
Game-‐theore6c models of cascades [Moore 2000]
Game theore6c models of cascades
Rules of the game
Decision rule for node v
Example
Stopping cascades
Stopping cascades
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