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Color Patches

This is a cellular automaton model where each agent lives in a cell on a 2D grid, and never moves.

An agent's state represents its "opinion" and is shown by the color of the cell the agent lives in. Each color represents an opinion - there are 16 of them. At each time step, an agent's opinion is influenced by that of its neighbors, and changes to the most common one found; ties are randomly arbitrated. As an agent adapts its thinking to that of its neighbors, the cell color changes.

Parameters you can play with:

(you must change the code to alter the parameters at this stage)

  • Vary the number of opinions.
  • Vary the size of the grid
  • Change the grid from fixed borders to a torus continuum

Observe

  • how groups of like minded agents form and evolve
  • how sometimes a single opinion prevails
  • how some minority or fragmented opinions rapidly disappear

How to Run

To run the model interactively, run ``mesa runserver` in this directory. e.g.

    $ mesa runserver

Then open your browser to http://127.0.0.1:8521/ and press Reset, then Run.

Files

  • color_patches/model.py: Defines the cell and model classes. The cell class governs each cell's behavior. The model class itself controls the lattice on which the cells live and interact.
  • color_patches/server.py: Defines an interactive visualization.
  • run.py: Launches an interactive visualization

Further Reading

Inspired from this model from San Jose University
Other similar models: Schelling Segregation Model