{
  "schema_version": 1,
  "status": "completed_candidates_rejected",
  "claim_boundary": "Experimental training and independent calibration only; no production release claim.",
  "training_portfolio": {
    "region": "flanders",
    "sample_count": 12,
    "unique_non_overlapping_tile_count": 48,
    "label_count": 1710,
    "negative_tile_count": 3,
    "excluded_overlapping_edge_cover_tile_count": 60,
    "source_authority": "GRB",
    "source_manifest_sha256": "afa0edc5f229e0451d4a3630bb0d716b0ac1d446a6f8c2f22807d4f83b818525",
    "human_review_complete": false,
    "ai_assisted_visual_review_tiles": 48
  },
  "spatial_independence": {
    "status": "independent",
    "minimum_required_distance_m": 2000.0,
    "observed_minimum_distance_m": 9203.454080711017
  },
  "frozen_v72_calibration": {
    "tile_count": 24,
    "instance_count": 348,
    "active": {
      "model_sha256": "a9088b8491dfae36694b53e9e9406cb4e3511d334a5712fa34f75078a47759c1",
      "precision": 0.1576550586330707,
      "recall": 0.11781609195402298,
      "map50": 0.05677865740374553,
      "map50_95": 0.02175035531261916
    },
    "aggressive_e20": {
      "decision": "rejected",
      "model_sha256": "c4d9995ca040dff4ca327f6022f30d679335998ef1968c3061102ae6ed4105ac",
      "precision": 0.012361111111111111,
      "recall": 0.2557471264367816,
      "map50": 0.01885292400464415,
      "map50_95": 0.00378065636983694
    },
    "controlled_e10": {
      "decision": "rejected",
      "model_sha256": "e4f5ffc3080dc5781868f7add07176fa7b59cc50fb947ebb9b87495f3d9f20b2",
      "precision": 0.017933658902666374,
      "recall": 0.32471264367816094,
      "map50": 0.0222135694107064,
      "map50_95": 0.005679536478252313
    }
  },
  "production_decision": {
    "active_model_unchanged": true,
    "reason": "Both fresh-data candidates materially regress precision and mAP on independent V72 calibration.",
    "promotion_allowed": false
  },
  "remaining_evidence_limits": [
    "Accepted independent human label review is still pending.",
    "V72 contains only 24 calibration tiles and is not a national accuracy claim.",
    "Wallonia and Brussels remain diagnostic-only until PICC and UrbIS authority contracts are governed for training.",
    "The current active detector remains low-accuracy on fresh regional imagery; fail-closed product messaging is required."
  ]
}