Formally Guaranteed Control Adaptation for ODD-Resilient Autonomous Systems
Organizations: Department of Computer Science, University of York, UK · Cyprus University of Technology, Limassol, Cyprus
Abstract
Ensuring reliable performance in situations outside the Operational Design Domain (ODD) remains a primary challenge in devising resilient autonomous systems. We explore this challenge by introducing an approach for adapting probabilistic system models to handle out-of-ODD scenarios while, in parallel, providing quantitative guarantees. Our approach dynamically extends the coverage of existing system situation capabilities, supporting the verification and adaptation of the system's behaviour under unanticipated situations. Preliminary results demonstrate that our approach effectively increases system reliability by adapting its behaviour and providing formal guarantees even under unforeseen out-of-ODD situations.
Figures & tables
| ID | Property violated | Worst critic- ality score | SAVE success (no violations) | Critical situations avoided |
|---|---|---|---|---|
| 1 | [ ] | 0.03890 | True | [s2, s3] |
| 2 | [ , ] | 0.03482 | True | [s2, s3, s5] |
| 3 | [ , ] | 0.03556 | True | [s3, s4] |
| 4 | [ , ] | 0.04483 | True | [s5, s1, s3, s2] |
| 5 | [ , ] | 0.04905 | False | - |
| …16 | [ ] | 0.04994 | True | [s1] |
| Event | Baseline Outcome | SAVE Response |
|---|---|---|
| Vessel deceleration (out-of-ODD) | Collision expected within the next 50 timesteps ( ), detected at time . Collision happens in situation at time . | Controller adapted at . Critical situation and collision avoid. |
| Requirement (safe TTC) | Violated at time . | Satisfied post-adaptation at time |
| Requirement (near collision) | Violated at time . | Satisfied post-adaptation at time . |