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PLaCA: A Robot Action Generation Framework Based on Future Latent Change

PLaCA proposes a world-to-action framework that directly predicts spatially structured patch-level future latent change from current multimodal input and explicitly incorporates it into action generation. On LIBERO-Long, PLaCA achieves a 79.0% success rate, a 5.0 percentage point improvement over the Action-only baseline; on CALVIN, the average sequence length improves from 2.784 to 3.564. The second-stage training updates only 2.95% of the model parameters.

Part of the event: PLaCA: A Robot Action Generation Framework for Predicting Future Latent Variable Changes

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