{
  "schema_version": 1,
  "purpose": "Fresh non-protected calibration portfolio for the retained Kempen model family",
  "frozen_before_inference": true,
  "aois": [
    {
      "slug": "v72-zandhoven-lowrise-cal",
      "region": "flanders",
      "context": "detached-lowrise",
      "split": "calibration",
      "lon": 4.663,
      "lat": 51.214,
      "sample_role": "positive"
    },
    {
      "slug": "v72-assenede-field-cal-bg",
      "region": "flanders",
      "context": "farmland-hard-negative",
      "split": "calibration",
      "lon": 3.750,
      "lat": 51.246,
      "sample_role": "background_candidate"
    },
    {
      "slug": "v72-libramont-lowrise-cal",
      "region": "wallonia",
      "context": "rural-lowrise",
      "split": "calibration",
      "lon": 5.380,
      "lat": 49.918,
      "sample_role": "positive"
    },
    {
      "slug": "v72-havelange-field-cal-bg",
      "region": "wallonia",
      "context": "farmland-hard-negative",
      "split": "calibration",
      "lon": 5.239,
      "lat": 50.389,
      "sample_role": "background_candidate"
    },
    {
      "slug": "v72-ganshoren-lowrise-cal",
      "region": "brussels",
      "context": "urban-lowrise",
      "split": "calibration",
      "lon": 4.307,
      "lat": 50.873,
      "sample_role": "positive"
    },
    {
      "slug": "v72-laeken-park-cal-bg",
      "region": "brussels",
      "context": "park-hard-negative",
      "split": "calibration",
      "lon": 4.351,
      "lat": 50.892,
      "sample_role": "background_candidate"
    }
  ]
}