PPBDP Network Simulator

This JavaScript based simulator can execute the basic model of the following study.

Ohdaira, T.,Evolution of cooperation by the introduction of the probabilistic peer-punishment based on the difference of payoff. Scientific Reports (Nature Publishing Group), vol.6, art. no.25413, doi: 10.1038/srep25413, 2016. [Link]

Usage

1. Select network type (Regular, Random, or Scale-free).

2. Select punishment type (PPBDP or NoPunish).

3. Click "Build Network".

4. Click "Start Simulation".

Notes

• The average degree of the network is 4, and the network is consist of 1,000 players (nodes).

• In the case of Random and Scale-free, the network property will change every time when clicking "Build Network" and is not the same as that of the above paper.

• In the case of no punishment, punishers simply mean cooperators.

• One simulation run is 300 timesteps, and 3 simulation runs will be executed by one click.

• You can restart simulation on the same network by clicking "Start Simulation" after 3 simulation runs.

• In each simulation run, you can click "Dynamic Draw On / OFF", and then every player on the network will be dynamically placed based on the spring-based graph layout algorithm (Eades spring model* with friction force).

  • * Eades, P., A heuristic for graph drawing. Congressus Numerantium, vol.42, pp.149-160, 1984.

• In this "Dynamic Draw On" mode, you can arbitrarily choose (click) a player, move him/her according to the mouse cursor, and release him/her by right-click.

• You can download the result csv file from "Result CSV File Output" link and also the adjacency matrix csv file from "Adjacency Matrix CSV File Output" link.

• When you want to change the network type, click "Reset" and then return to the step 1.

Any questions or comments are welcome. Please send your comments by email (to: tetsushi77 [at] gmail.com).