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Author

Mengkai Shi

4 papers indexed here

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Preprint Aug 2026

MeshPriorDiT: Hierarchical Modeling for Action-Conditioned Cloth Dynamics

Action-conditioned cloth dynamics prediction requires both locally plausible deformation and long-range coordination. Existing approaches largely follow two paradigms. Mesh-based GNNs capture local physical responses through material connectivity. However, their finite message-passing range limits coordination between...

Zi-Hang Wang, Jian-Ming Hu, Shang Su et al. · 0 citations
#machine learning Preprint Sep 2026

Copper-Policy: Focus on the Representation for Robust Robot Manipulation

World Action Models (WAMs) acquire behavioral priors by modeling future scene evolution, but predicting detailed futures in pixel or latent space incurs substantial cost. Recent evidence that co-training gains persist without test-time generation raises a question: what must a WAM learn to improve control? We introduce...

Ze Feng, Yi-Xu Feng, Ling-Yu Xiao et al. · 0 citations
Jul 2026

Self-Evolving Learning for Embodied AI with Criticality Model

This work proposes a self-evolving method that reduces failure rates by 51--67% relative to trained baselines and by 8-25% relative to state-of-the-art vision-language-action models after replacing redundant nominal scenarios with diverse failure-prone ones.

Linxuan He, Yuying Tian, Ling-Xiang Fan et al. · 0 citations
Preprint Jul 2026

DC-WAM: Dynamic-Centric Visual Supervision and Reasoning for World-Action Models

This work proposes DC-WAM, a dynamic-centric WAM framework that redistributes supervision and computation in the RGB video branch that consistently improves policy performance, especially under out-of-distribution perturbations in lighting, object appearance, and background texture.

Haoyuan Ji, Lingxiang Fan, Shang Su et al. · 0 citations

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