{
  "schema_version": 1,
  "generated_at": "2026-08-09T10:01:00Z",
  "run_id": "building-kempen-v67-ai-assisted-bgaware-r1",
  "status": "completed_rejected",
  "device": {
    "requested": "cuda:0",
    "observed": "NVIDIA GeForce RTX 4080 SUPER",
    "torch": "2.11.0+cu128",
    "ultralytics": "8.4.99"
  },
  "training": {
    "epochs": 12,
    "image_size": 640,
    "batch_size": 8,
    "workers": 0,
    "seed": 20260809,
    "base_model_sha256": "a9088b8491dfae36694b53e9e9406cb4e3511d334a5712fa34f75078a47759c1",
    "candidate_best_sha256": "1337eb9fdd6bb73c525bd616e2ba961f20d585387db940576055afd38a71ca91",
    "results_csv_sha256": "73bae1cc3e377fda8b1004a801c881f8313d6dffbbb5986555e2c5226212177d",
    "args_yaml_sha256": "374613f927c57f9e9832cf7e0131c987dc978cbe1ea787a827030a8378385122"
  },
  "validation": {
    "split": "val",
    "image_count": 36,
    "positive_image_count": 18,
    "pure_background_image_count": 18,
    "instance_count": 5686,
    "baseline": {
      "precision": 0.542,
      "recall": 0.430,
      "map50": 0.345,
      "map50_95": 0.141,
      "pure_background_detections_at_confidence_0_15": 0
    },
    "candidate_best": {
      "precision": 0.530,
      "recall": 0.435,
      "map50": 0.337,
      "map50_95": 0.135,
      "pure_background_detections_at_confidence_0_15": 3
    }
  },
  "decision": {
    "promote": false,
    "production_model_changed": false,
    "reason": "The small recall gain does not compensate for lower precision and mAP plus a regression from zero to three detections on pure-background validation tiles.",
    "active_model_sha256_after_decision": "a9088b8491dfae36694b53e9e9406cb4e3511d334a5712fa34f75078a47759c1"
  },
  "claim_boundary": "Experimental Kempen validation only. No protected test or challenge data was opened, no national accuracy claim is made, and formal human review remains required for any future promotion."
}