Exploring Wealth Distribution Through Sugarscape

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Presentation transcript:

Exploring Wealth Distribution Through Sugarscape Jordan Albright

Purpose Analyze the wealth distribution of agents in Sugarscape over time Compare calculations with other studies Assess validity of project in scope of social science

Similar Studies An Agent-Based Model of Wealth Distribution Impullitti and Rebmann, 2002 Studied sugarscape wealth distribution in context of classical and neo-classical economics Found it difficult to bridge model and reality in agent based modeling

Similar Studies (cont.) Aligning Simulation Models: A Case Study and Results Axtell, Axelrod, Epstein, Cohen, 1996 Attempted to synthesize results from Sugarscape and Axelrod model Difficult to streamline results of models when given same initial conditions

Sugarscape Movement Vision Reproduction Death Sugar regrowth

Wealth Distribution Analysis Lorenz Curve Proportion of distribution Line of perfect equality Basis for many other functions

Wealth Distribution Analysis Gini coefficient Measure of inequality Ratio ranging from 0 to 1 Typical range of developed countries: .3 to .4

Wealth Distribution Analysis Robin Hood/Hoover Index Max vertical distance from Lorenz curve to perfect distribution line Proportional to amount of wealth needed to be redistributed for equality

Results Comparison of results with Impullitti: Gini coefficient in project: .4-.5 Gini coefficient in Impullitti: .3 to .33 Different rules for agents Different initial conditions No data for Robin Hood index More comparisons needed to validate results

3rd Quarter Plans Improve speed of program Find more data for comparison Add rules for agents