Author

Jian Liu

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Preprint Aug 2026

WorldCycle: Self-Verifiable Reinforcement Learning for Long-Horizon Video World Models

WorldCycle is introduced, a self-verifiable RL framework that constructs closed action cycles and their repeated executions from ordinary action sequences, and optimizes two complementary rewards: a spatial closure reward enforcing symmetry between mirrored forward and reverse segments, and a temporal consistency rewar...

Bohai Gu, Yueyang Yuan, Tai-Yi Wu et al. · 2 citations

Preprint Aug 2026

Temporally Grounded Compositional Camera Motion Understanding via Geometric Knowledge Distillation

This work introduces CamChoreo, a benchmark of 4,229 real single-shot clips with expert-annotated temporal segments, and proposes CamDistill, which distills the same geometric knowledge into lightweight camera tokens during training and removes the 3D model at inference.

Da-Zhao Du, Shiyan Du, Jian Liu et al. · 0 citations