4 papers
TRACE: Trajectory Recovery with State Propagation Diffusion for Urban Mobility
Jinming Wang, Hai Wang, Hongkai Wen +2
High-quality GPS trajectories are essential for location-based web services and smart city applications, including navigation, ride-sharing and delivery. However, due to low sampli…
HALO: Hierarchical Reinforcement Learning for Large-Scale Adaptive Traffic Signal Control
Yaqiao Zhu, Hongkai Wen, Geyong Min +1
Adaptive traffic signal control (ATSC) is essential for mitigating urban congestion in modern smart cities, where traffic infrastructure is evolving into interconnected Web-of-Thin…
CityVerse: A Unified Data Platform for Multi-Task Urban Computing with Large Language Models
Yaqiao Zhu, Hongkai Wen, Mark Birkin +1
Large Language Models (LLMs) show remarkable potential for urban computing, from spatial reasoning to predictive analytics. However, evaluating LLMs across diverse urban tasks face…
Federated Learning for Traffic Flow Prediction with Synthetic Data Augmentation
Fermin Orozco, Pedro Porto Buarque de Gusmão, Hongkai Wen +2
Deep-learning based traffic prediction models require vast amounts of data to learn embedded spatial and temporal dependencies. The inherent privacy and commercial sensitivity of s…