Diagnosis of World Model Failure via Kinematic-Consistency Error
July 6, 2026
World models suffer from Kinematic-Consistency Error (iKCE), where imagined rollouts follow kinematic patterns rather than true physical dynamics. Testing on DreamerV3 checkpoints showed imagined iKCE is two orders of magnitude higher than real-physics rollouts.
HOW THIS AFFECTS YOU
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researcherYou can use iKCE as a per-step diagnostic to identify why long-horizon rollouts fail in simulation.