Start with the prediction
Define the target, decision, evaluation metrics, and operating constraints before selecting a model or training approach.
ML. Define what a useful prediction must do. Train candidates, compare their results, and test the failure cases that matter before proposing a release.
Illustrative workflow with synthetic data.

Product walkthrough
Read the transcript and visual descriptionsDefine the target, decision, evaluation metrics, and operating constraints before selecting a model or training approach.
Choose governed inputs, define features, and preserve the separation between training and evaluation data.
Keep datasets, feature choices, parameters, and environments connected to each training run so candidate results can be compared.
Review model quality alongside latency, cost, and the constraints of the business decision. Keep a baseline for comparison.
Connect a selected release to batch or online prediction. Retain the evaluation and training lineage behind the deployed model.
Connect observations and labels to monitoring. Use performance changes to guide a reviewed decision about evaluation or retraining.
Meridian compares models for late shipments. The strongest overall score still misses a critical hazardous-load guardrail.
Predict which shipments may miss the 21:00 cutoff using information known at the decision time. The intended use is human-reviewed recovery.
Inspect three candidates against the same held-out data. Trial 3 leads overall, but its hazardous-load recall is 84%, below the 90% minimum.
Continue study retains the reason to improve hazardous-load recall. The comparison does not select a new model release.

In practice
Missing a hazardous shipment can matter more than a small gain in average prediction quality. Meridian’s evaluation makes that tradeoff visible: Trial 3 improves the overall score but misses the recall requirement for lithium loads. The team keeps the decision and the reason to continue the study.
Example operation.Explore the solutionDefine the target, the information available at decision time, and the mistakes that would make a model unsuitable for the work.