Tag Archives: classic models

How Long is the Coastline of the Law: Additional Thoughts on the Fractal Nature of Legal Systems

Do legal systems have physical properties? Considered in the aggregate, do the distinctions upon distinctions developed by common law judges self-organize in a manner that can be said to have definable physical property (at least at a broad level of abstraction)? … Continue reading

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Riders on a Swarm — Might Mimicking the Behavior of Ants, Bees & Birds Be the Key to Artificial Intelligence?

This week’s issue of the Economist has an interesting article entitled Riders on a Swarm. Among other things, the article discusses how attempts to computationally model ant, bee and bird behavior have offered insight into major problems in artificial intelligence. … Continue reading

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The Dissemination of Culture — Axelrod (1997) Model — Now Available on Netlogo’s Community Models Page

Robert Axelrod’s 1997 Culture Model is a complex systems classic.  Several versions of the model are available including one in Repast J. Perhaps the most user friendly version has recently been posted to Netlogo’s “community models” page. Those interested in experimenting with … Continue reading

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Forest Fire Model-A Popular Example of Non-Linearity [Repost from 5/13]

The Forest Fire Model is a commonly invoked example of non-linear system–where a very small perturbation can generate significant differences in observed outcomes. Consider the above Netlogo–to Run the Model: (1) Adjust the Density Slider to set the concentration within … Continue reading

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The S.I.R. Model — A Simple Model With Applications to Swine Flu, etc.

  Last week we offered a model of intellectual diffusion built upon a standard fare social epidemiology model.  Given recent events within the United States, Mexico and potentially worldwide, we thought it would be worthwhile to highlight the classic S.I.R. (Susceptible, … Continue reading

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Classic Model from Complex Systems: The El Farol Bar Problem

I recently attended a conference at the Santa Fe Institute.  During the trip, I made a point of eating at the El Farol Bar & Restaurant. This restaurant holds a special place in the lore of complex systems.  Thus, I thought I … Continue reading

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Coming Next Week on CLS Blog

  A Netlogo 3D screenprint of one of the classic agent based models—the Shelling Segregation Model is above. We offer it as a holdover until CLS Blog Returns Sunday Night with more exciting content….. NEXT WEEK: (1) Discussion of a New … Continue reading

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