Concept Drift: where reality changes while the model stays static
Concept drift requires re-specification, not just retraining. Zertia audits detection under ISO 42001 + EU AI Act Article 72.
Definition
Concept drift requires re-specification, not just retraining. Zertia audits under ISO 42001 + EU AI Act.
Key facts
- Concept drift: change in statistical relationship between inputs and target.
- Different from data drift: the world has changed, not just the inputs.
- Not fixable by retraining alone; requires target re-specification.
- EU AI Act Article 72 covers both data and concept drift.
- Zertia audits re-specification workflows under ISO 42001 + Article 72.
Frequently asked questions
What is concept drift?
Change in relationship between inputs and target variable; the world has changed.
How does it differ from model drift?
Model drift is observable degradation; concept drift is one cause.
How is it addressed?
Re-specification of target variable, not just retraining. Zertia audits under ISO 42001 + ISO 5338.
Definitions that hold up under audit.
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