{
  "stage": "rolled_back",
  "message": "Model lama dipertahankan. Model baru lebih buruk secara signifikan (-12.92% weighted F1)",
  "timestamp": "2026-05-25T06:51:07.653672",
  "result": "rolled_back",
  "reason": "Model baru lebih buruk secara signifikan (-12.92% weighted F1)",
  "old_f1": 0.7804040674617057,
  "new_f1": 0.6512,
  "_reloaded": true
}