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Sensitivity analysis of an agent-based simulation model using reconstructability analysis
Published in International Journal of General Systems, 2021
Andey M. Nunes, Martin Zwick, Wayne Wakeland
In agent-based simulation (ABS), agents interact with each other in a dynamic environment. By following simple rules, these interactions result in emergent behavior patterns. SugarScape is a widely studied ABS model developed by Joshua M. Epstein and Robert Axtell (Epstein and Axtell 1996). The NetLogo Wealth Distribution model, developed by Uri Wilensky, is based on the SugarScape model and includes output variables for the Gini coefficient, a measure of wealth inequality, and for the class distribution in the simulation population (Wilensky 1999). This project applied a machine learning methodology to the outputs generated by Wilensky’s Wealth Distribution model to answer the following questions,
Can a machine learning algorithm detect relations between model parameters and model output that augment our understanding of the model? Specifically, can such an algorithm reveal the degree to which the model parameters and their interactions predict the model output?