# Post-hoc Epistemic Uncertainty Estimation for Vision-Language-Action Policies

- Source: arXiv cs.RO
- Published: 2026-10-22T04:00:00.000Z
- RoboHot: https://robohot.news/en/items/c7ian6za68yu17g08rbjw6fi8
- Original: https://arxiv.org/abs/2610.29730

## Summary

The paper proposes post-hoc kernel-variance heads that estimate epistemic uncertainty from the embeddings of a single policy, without regression targets or gradient updates, and without changing the original policy.