Persistent Bias Drift
Memory & Knowledge GovernanceDescription
Agent bias accumulates through persistent memory. Biases encoded in memory compound over time; especially problematic in agents that learn from interactions and write back to memory stores.
HR agent's memory accumulates screening patterns that systematically disadvantage candidates from certain universities over time.
Differential model accuracy across demographic groups has been confirmed in multiple production deployments, including commercial facial recognition systems and automated hiring tools. Regulatory investigations and academic audits have documented measurable performance gaps along race and gender lines in live systems.
Primary mitigations
- Regular bias audits on memory contents
- bias detection in memory writes
- memory content diversity monitoring
- periodic memory sanitisation.
Detection signals
Persistent Bias Drift Score; bias magnitude over time; demographic parity metrics in agent decisions.