{
  "schema_version": 1,
  "run_id": "building-kempen-v69-nonoverlap-checkpoint-review-r2",
  "generated_at": "2026-08-09T20:35:51+02:00",
  "status": "completed_no_production_change",
  "claim_boundary": "Non-protected two-positive-AOI and one-background-AOI validation refinement only; tiles do not overlap, but statistical independence, protected-test performance, national accuracy and promotion eligibility are not established.",
  "correction_to_prior_evidence": {
    "prior_validation_tile_count": 36,
    "prior_tile_overlap_pixels": 256,
    "prior_background_tile_count": 18,
    "invalid_background_sample": "arendonk_heide",
    "invalid_background_reason": "all nine source tiles are visually blank/low-variance no-data; four non-overlap representatives were excluded with explicit reason codes",
    "effect": "The prior matrix remains a historical overlapping-tile ranking, but its 18-image background count must not be interpreted as 18 real background observations."
  },
  "evaluation_view": {
    "path": "/app/storage/operator-data/yolo-building-aoi1024-bgaware512r8-nonoverlap-eval-r2",
    "manifest_sha256": "69f555e57fa52d8b7cdfc5632167bde96b64030ee37e9bf49ff2d9891d66574a",
    "summary_sha256": "c17a8c47eaecc2dfb38778ff5a612f9e6c4d67c9e90e31d3a6a66d8857adec4c",
    "cross_tile_audit_sha256": "b0a49d7f5983ccaa07754a1e3d6d8f7b10345d3c57b9f613bb856de9d6f70b74",
    "contact_sheet_sha256": "f5954a2f6ad3dc59642bf3a51d98ca94343491f522968ab38d60c999ed21c797",
    "tile_size": 512,
    "stride": 512,
    "tile_count": 12,
    "positive_tile_count": 8,
    "real_background_tile_count": 4,
    "positive_aoi_count": 2,
    "background_aoi_count": 1,
    "label_count": 2551,
    "unique_interior_object_count": 2384,
    "edge_label_count": 167,
    "repeated_interior_object_count": 0,
    "excluded_low_variance_tile_count": 4,
    "excluded_sample_slug": "arendonk_heide",
    "training_prohibited": true,
    "statistical_independence_established": false
  },
  "runtime": {
    "device": "cuda:0",
    "gpu": "NVIDIA GeForce RTX 4080 SUPER",
    "torch": "2.11.0+cu128",
    "ultralytics": "8.4.99"
  },
  "checkpoint_metrics": {
    "active": {
      "model_sha256": "a9088b8491dfae36694b53e9e9406cb4e3511d334a5712fa34f75078a47759c1",
      "precision": 0.5426324241859346,
      "recall": 0.4353171786761234,
      "map50": 0.342034346792601,
      "map50_95": 0.1413160008545276,
      "background_detections_confidence_0_15": 0,
      "background_detections_confidence_0_25": 0
    },
    "challenger": {
      "model_sha256": "038f1f97a6afd534f29e1f392a730a58207b928ca01e31ab8d8fed6106705820",
      "precision": 0.5817150200182469,
      "recall": 0.462299518515736,
      "map50": 0.3683635371499511,
      "map50_95": 0.15531818619443444,
      "background_detections_confidence_0_15": 1,
      "background_detections_confidence_0_25": 0
    },
    "confidence_0_15_matrix_sha256": "915c8523fe71a2d88b44bcb75d9070d25940f3969213692cc121f1239b31489b",
    "confidence_0_25_matrix_sha256": "173d8af94d5d3d805b67a1a99d36e196255166e2e32ecabbef40ebf065c92138"
  },
  "decision": {
    "relative_metric_ranking": "challenger",
    "strict_background_ranking_at_0_15": "active",
    "background_tie_at_0_25": true,
    "production_model_changed": false,
    "reason": "The challenger remains stronger on this refined non-overlapping ranking and clears Postel at 0.25, but one real background AOI and two adjacent positive AOIs are insufficient for release; historical provenance and human-review gates also remain closed."
  }
}