[2605.01201] To Do or Not to Do: Ensuring the Safety of Visuomotor Policies Learned from Demonstrations
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Computer Science > Robotics
arXiv:2605.01201 (cs)
[Submitted on 2 May 2026]
Title:To Do or Not to Do: Ensuring the Safety of Visuomotor Policies Learned from Demonstrations
Authors:Riad Ahmed, Moniruzzaman Akash, Momotaz Begum
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Abstract:Task success has historically been the primary measure of policy performance in imitation learning (IL) research. This characteristics strictly limits the ubiquitous applications of IL algorithms in field robotics where safety assurance, in addition to task-success, is of paramount importance. It is often desirable for an IL-powered robot in the field not to roll out a policy, and hence score a poor performance, if the safety is not guaranteed. Although this trade-off between safety and performance is well investigated in classical control literature, policy safety is a heavily underexplored domain in IL research. There is no universal definition of safety in IL. To make things worst, many existing theoretical works on safety is notoriously difficult to extend to IL-powered robots in the field. This paper offers important insights on the safety and performance of IL policies. We propose execution guarantee, a policy-agnostic safety measure that guarantees the maximum task success for a visuomotor IL policy, despite minor run-time changes, from within a specific region in the state space. We leverage recent advances in view synthesis to identify such regions in the state space for an IL policy and explore a fundamental result on set invariance - namely, Nagumo's sub-tangentiality condition - to prove and operationalize execution guarantee from inside that region. Experiments with a Franka robot, both in simulation and real world, demonstrate how the proposed safety analysis allows various IL policies to achieve maximum task success with guarantee. We also demonstrate some interesting results on how a recovery policy - a by-product of the proposed safety analysis - can help to increase the policy performance and thereby mitigating the safety-performance tradeoff in IL.
Subjects:
Robotics (cs.RO)
Cite as: arXiv:2605.01201 [cs.RO]
(or arXiv:2605.01201v1 [cs.RO] for this version)
https://doi.org/10.48550/arXiv.2605.01201
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arXiv-issued DOI via DataCite (pending registration)
Submission history
From: Riad Ahmed [view email] [v1] Sat, 2 May 2026 02:39:01 UTC (5,854 KB)
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