Author

Yun-Long Wang

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Preprint Oct 2026

Frozen in a Frame: The Velocity Blind Spot in JEPA World Models

Joint-embedding predictive architectures (JEPAs) for world modeling train an encoder so a predictor maps a current embedding and action to the next frame's embedding, always from a single rendered frame. This has a structural blind spot: a renderer without motion blur draws a scene from configuration alone, so a single...

Ting-He Zhang, Chun-Yu Liu, Y. Liu et al. · 0 citations

#artificial intelligence Preprint Sep 2026

A Patient World Model for Early Forecasting of Digital Health Campaign Outcomes: Capabilities and Limits

Digital direct-to-consumer (DTC) health campaigns are usually measured after the fact. In-flight forecasting commonly relies on a separate classifier for every cutoff and horizon. We treat this task as a dynamic-system problem and build a compact patient world model. The architecture maintains a latent state per patien...

Yun-Long Wang · 0 citations