Add quality and diversity guardrails to an engagement-only recommender KPI.
Iris I Product Lead 1 Clarify 2 Guardrail 3 Rewrite KPI design 45 sec The moment The knowledge-base recommender has one proposed KPI: maximize session length. You need to protect user value without blocking launch. Engagement can mean interest or friction. The KPI needs a counterweight. Framework 1 min Metric design Proxy -> Failure mode -> Guardrail
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