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News/The Layer Mystery of VLA: An Information-Theoretical Analysis of VLA Latent Interface
arxiv
PublishedSeptember 30, 2026 at 4:00 AM

The Layer Mystery of VLA: An Information-Theoretical Analysis of VLA Latent Interface

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arXiv:2609.36118v1 Announce Type: new Abstract: Vision-language-action (VLA) policies connect a pretrained vision-language backbone to an action head through a latent interface, but which backbone layers this interface should expose remains unclear. We study single-layer selection and multi-layer fu

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