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cs.CV2026
Tracking Is Not Permanence: What Video World Models Keep of a Hidden Object
Peng Xie, Amr Alanwar
Video world models track objects they can see; we ask what they keep of objects they cannot. We hide an object from a frozen V-JEPA 2 predictor and compare its prediction for the h…
cs.CV2026
JEPA Learns What the Mask Leaves Unrecoverable
Peng Xie, Amr Alanwar
Joint-embedding predictive architectures are unusually sensitive to how the input is masked: block masks work, scattered masks do not, and the explanations are empirical. We give a…