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Zhiruo Zhou

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#artificial intelligence Preprint Sep 2026

Frozen Flows Forget: Diagnosing and Restoring Lost Motion in a Latent-flow World Model

Latent world models that integrate a flow in a frozen self supervised latent space train stably and cheaply, yet silently lose the property manipulation depends on most: motion. The pretrained flow never moves the manipulated object; retraining it with latent-only losses only trades stillness for teleport-like motion....

Xi-Wen Chen, Rigaudiere Z. Li, Zhi-Ruo Zhou et al. · 0 citations
Preprint Aug 2026

Dueling World Models: Advantage-Style Action Channels for Common-Mode Distractor Rejection

In latent dynamics, subtracting a prediction's mean effect over actions cancels whatever the actions share--the action-independent variation where distractors live--leaving a clean, controllable channel, with no reward, no reconstruction, and no distractor-specific auxiliary loss.

Jiazhuo Li, Yiming Fei, Zhiruo Zhou et al. · 0 citations

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