The paper defines noise-coupled twin rollouts, where a counterfactual branch shares the self-generated factual noise, making Pearl's abduction step exact and enabling simulator-grounded locality metrics and rewards.
Counterfactual world models via digital twin-conditioned video diffusion.arXiv preprint arXiv:2511.17481, 2025
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Twin Rollouts: Noise-Coupled Counterfactual Branching in Interactive Video World Models
The paper defines noise-coupled twin rollouts, where a counterfactual branch shares the self-generated factual noise, making Pearl's abduction step exact and enabling simulator-grounded locality metrics and rewards.