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Chang Xu

2 papers indexed

arxivcs.LG2026-07-21

Physics-Informed Super-Resolution of Atmospheric Data

Chang Xu, Gencer Sumbul, Hugo Porta, Manon Béchaz, Sebastian Schemm, Devis Tuia

In the context of global warming, extreme events have become more frequent and intense, making their trustworthy detection and forecasting more important than ever. Yet, atmospheric observations lack sufficient spatial resolution, motivating atmospheric data downscaling as a way…

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arxivcs.RO2026-06-30

Revisiting Parameter Redundancy in Vision-Language-Action Models: Insights from VLM-to-VLA Adaptation

Fengnian Zhang, Tao Huang, Siyu Xu, Zhong Jin, Chang Xu

Vision-Language-Action (VLA) models have made significant strides in embodied intelligence by integrating the powerful representations of pre-trained Vision-Language Models (VLMs). However, the massive parameter scale of VLAs imposes a heavy computational burden, and these models…

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