Walk the Drift Loop
Use a Plan-Do-Check-Act loop to handle model drift in a digital twin.
Model drift Building B's energy twin lost most of its savings over three months while comfort complaints doubled. The physical system evolved. PDCA gives you a repeatable way to learn what changed before you retrain or abandon the model. PDCA loop Plan -> Do -> Check -> Act Use PDCA as the operating rhythm for twin health. Drift is not a scandal; unexamined drift is. Shortcut Retrain immediately and hope complaints fall. The twin improves without uncontrolled tinkering. When the physical system changes, the twin needs a learning loop, not a panic button. P Plan D Do C Check A…
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