We have released a preprint paper describing GenWorld, a large-scale urban simulation platform designed to model human behavior at the city level.
The platform constructs a synthetic population of 196,608 individuals across 90,104 households, grounded in Japanese census data, mobility datasets, and national time-use surveys. Demographic distributions, household structures, commuting distances, and temporal activity patterns are validated against real-world statistics.
GenWorld provides an integrated framework for representing individuals, households, activities, and spatial environments, with the aim of supporting future research on large-scale behavioral modeling and urban decision-making.
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Preprint paper (PDF)
https://genworld1993.netlify.app/paper.pdf -
Project website
https://genworld1993.netlify.app/
Reference
Li, G., Lan, J., Xu, P., Wu, Z., Ogura, M., Feng, T.,
GenWorld: An LLM-Ready Urban Simulation Platform with Empirically-Grounded Synthetic Populations,
arXiv preprint, 2026.