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Xi Cheng

2 papers indexed

arxivcs.LGcs.AI2026-07-14

EMAGN: Efficient Multi-Attention Graph Network via Learned Clustering for Scalable Traffic Forecasting

Mingxing Xu, Rakesh Chowdary Machineni, Ke Liu, Xi Cheng, Chengqi Lu, Xin Hu, et al.

Traffic forecasting is highly challenging due to complex and nonlinear spatial and temporal dependencies. Self-attention mechanisms have been widely adopted to model dynamic and long-range dependencies, achieving state-of-the-art performance, but suffer from limited scalability d…

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arxivcs.AI2026-07-14

Cost-Optimal Foundation Model Deployment Portfolio for Transportation Management

Xi Cheng, Ke Liu, Siyuan Feng, Jane Lin, H. Oliver Gao

Foundation models, including large language models (LLMs) and vision-language models (VLMs), are increasingly used for transportation management center (TMC) tasks such as anomaly detection, incident reporting, and traveler information. Deploying multiple such models across TMC f…

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