Continuous Model Management and MLOps
An illustrative retention program retrains weekly and passes its checks, yet lacks evidence of its continuing business effect.
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Model Serving Architecture
A fictional checkout failure shows why stored scores, online features, fallback capacity, and recovery compatibility need explicit contracts.
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Model Versioning, Lineage, and Promotion
In a fictional credit-model investigation, the weights survived but training and request-time records did not. Rebuilding and replaying need different evidence.
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Model Evaluation Reliability
A fictional claims model scores 0.97 offline and 0.71 on resolved production cases. Leakage, selection, and uncertain outcomes complicate both numbers.
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Machine Learning Problem Framing
A fictional churn project shows why predicting who will leave is not enough to decide whom to call. Evaluate incremental benefit, costs, and constraints.