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GATSim: Urban Mobility Simulation with Generative Agents

Created by
  • Haebom

Author

Qi Liu, Can Li, Wanjing Ma

Outline

GATSim is a novel simulation framework that leverages large-scale language models and AI agent technologies to overcome the limitations of existing rule-based urban mobility simulations. GATSim agents have various socioeconomic attributes, personal lifestyles, and evolving preferences, and make mobility decisions through psychologically-informed memory systems, tool-using abilities, and lifelong learning mechanisms. It has a comprehensive architecture that integrates urban mobility-based models, agent cognitive systems, and traffic simulation environments, and has been proven to generate results similar to real human mobility behavior. In particular, it enables realistic behavioral adaptation over time through a reflective process that converts experience into generalized insights. Reproducibility has been ensured through the public prototype system code on GitHub.

Takeaways, Limitations

Takeaways:
Presenting a new urban mobility simulation framework that overcomes the limitations of existing rule-based simulations
Suggesting the possibility of realistic human behavior modeling using large-scale language models and AI agent technology
Show that the behavior of generative agents is competitive with human evaluators
Ensuring reproducibility and scalability of research through open code sharing
Limitations:
Currently in prototype stage, further research is needed on applicability and scalability to real urban environments.
Computational cost and potential performance degradation due to model complexity
Further validation of the model's generalizability and applicability to diverse urban environments is needed.
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