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Disaggregation and Refinement of System Dynamics Models via Agent-based Modeling...

by James J Nutaro, Ozgur Ozmen, Jack C Schryver
Publication Type
Conference Paper
Publication Date
Conference Name
Summer Simulation Multi-conference
Conference Location
Monterey, California, United States of America
Conference Sponsor
Society for Modeling and Simulation International
Conference Date
-

System dynamics models are usually used to investigate aggregate level behavior, but these models can be decomposed into agents that have more realistic individual behaviors. Here we develop a simple model of the STEM workforce to illuminate the impacts that arise from the disaggregation and refinement of system dynamics models via agent-based modeling. Particularly, alteration of Poisson assumptions, adding heterogeneity to decision-making processes of agents, and discrete-time formulation are investigated and their impacts are illustrated. The goal is to demonstrate both the promise and danger of agent-based modeling in the context of a relatively simple model and to delineate the importance of modeling decisions that are often overlooked.