Robustness as a reliability sub-characteristic
The introduction places robustness inside an AI quality model and cites ISO/IEC 25059:2023, which treats it as a sub-characteristic of reliability. 25059 frames robustness as how far a system keeps working correctly whatever happens.
The requirement in plain English
The introduction places robustness inside an AI quality model and cites ISO/IEC 25059:2023, which treats it as a sub-characteristic of reliability. 25059 frames robustness as how far a system keeps working correctly whatever happens.
What the public record says
The introduction places robustness among the characteristics in an AI quality model, and says 25059 treats it as a sub-characteristic of reliability. The public term sits at 3.2.5.
Why it matters to you
Where robustness sits in a quality model decides who owns the evidence. If it is a reliability sub-characteristic, the reliability or model quality owner is the natural evidence owner, not the security team and not the legal team. The 25059 wording also sets a high bar: functional correctness under any circumstances. The FDIS stability term narrows that to specified perturbations, which is testable. Keeping both in view stops a team claiming 25059 robustness from a test that only covers one perturbation family.
Evidence a reviewer asks for
- The quality model mapping showing robustness under reliability, with the source clause.
- The named evidence owner for robustness, aligned to the quality model.
- The performance measure that stands for functional correctness in each system.
Checks to run this month
- Does the quality plan place robustness under reliability?
- Is the performance measure defined before the test?
- Is any claim broader than the perturbations tested?
Dates
No date attached to the concept. FDIS registered 2026-08-21.
Cross-references
- Part 1, the overview of robustness assessment
- Clause 3.1, Stability
- Map the work to the AI management system and the risk process
What this page does not state
The FDIS does not restate the 25059 definition or add a threshold.