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News/One-Step Prediction Fidelity Is a Poor Proxy for Planning Performance in JEPA World Models
arxiv
PublishedOctober 15, 2026 at 4:00 AM

One-Step Prediction Fidelity Is a Poor Proxy for Planning Performance in JEPA World Models

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arXiv:2610.19375v1 Announce Type: new Abstract: Latent world models are routinely selected, checkpointed and ablated on one-step prediction loss, on the assumption that a model which predicts the next latent better is a better model. In model-based RL this assumption is known to be unreliable; we as

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