Upload engine_params.json and engine results

engine_params.json

@@ -0,0 +1,237 @@
+{
+  "name": "B-Mo iron ore statistical engine",
+  "version": 1,
+  "created_utc": "2026-11-14T18:32:54+00:00",
+  "trained_on_fake_data": false,
+  "training": {
+    "deposits": 975,
+    "background": 1950,
+    "exact_only": false,
+    "imagery_window": [
+      "2024-01-01",
+      "2025-12-31"
+    ],
+    "buffer_m": 500,
+    "composite": "median; Sentinel-2 SCL-masked; Landsat QA_PIXEL-masked",
+    "background_rule": "25.0-300.0 km from a deposit, on land, 50% on bare/sparse ground"
+  },
+  "validation": {
+    "engine_model": "Statistical engine (likelihood variant)",
+    "scheme": "spatial CV, 10-degree blocks",
+    "engine_cv_roc_auc": 0.7816005259697567,
+    "engine_deposits_found_at_10pct_false_alarms": 0.4164102564102564,
+    "best_ml_model": "XGBoost",
+    "best_ml_feature_set": "+terrain",
+    "best_ml_cv_roc_auc": 0.8577130834976988
+  },
+  "feature_set": "+terrain",
+  "engine_mode": "likelihood",
+  "scoring": {
+    "closeness": {
+      "per_feature": "s = exp(-0.5*((x-mean)/std)^2)",
+      "combine": "weighted average over available features, x100"
+    },
+    "likelihood": {
+      "per_feature": "llr = clip(log N(x|deposit mean,std) - log N(x|background mean,std), -10, 10)",
+      "combine": "S = sum(llr * weight/max_weight) over available features; score = 100/(1+exp(-S/llr_scale))",
+      "llr_scale": 16.70671964821434
+    },
+    "mode_used_below": "likelihood",
+    "class_names": [
+      "Very low",
+      "Low",
+      "Moderate",
+      "High",
+      "Very high"
+    ],
+    "class_edges_score": [
+      49.09511078426455,
+      56.82105322793868,
+      58.531284836870356,
+      59.582799025505466
+    ],
+    "class_edges_note": "background percentiles 50/75/90/97 of out-of-fold engine scores"
+  },
+  "features": {
+    "B2": {
+      "definition": "Sentinel-2 L2A blue reflectance",
+      "mean": 0.06391912284567709,
+      "std": 0.0284990439040614,
+      "weight": 0.07191853958979354,
+      "auc": 0.30959000657462193,
+      "background_mean": 0.09879605506653497,
+      "background_std": 0.053489586861614216
+    },
+    "B3": {
+      "definition": "green",
+      "mean": 0.08746275535780693,
+      "std": 0.03363015402098855,
+      "weight": 0.08019613370578234,
+      "auc": 0.2876744247205786,
+      "background_mean": 0.1385876254020657,
+      "background_std": 0.07346691898624802
+    },
+    "B4": {
+      "definition": "red",
+      "mean": 0.10678930898259474,
+      "std": 0.04647818626059766,
+      "weight": 0.07227970468694157,
+      "auc": 0.3086337935568705,
+      "background_mean": 0.1791886566811235,
+      "background_std": 0.10976436417507891
+    },
+    "B8": {
+      "definition": "NIR",
+      "mean": 0.2066286780458844,
+      "std": 0.05479076284351166,
+      "weight": 0.10547153202539121,
+      "auc": 0.2207558185404339,
+      "background_mean": 0.28083064969382937,
+      "background_std": 0.08412121715135522
+    },
+    "B11": {
+      "definition": "SWIR1",
+      "mean": 0.2232268534016476,
+      "std": 0.05935811691843387,
+      "weight": 0.09199856408068086,
+      "auc": 0.2564265614727153,
+      "background_mean": 0.3183105457914477,
+      "background_std": 0.12747207872535252
+    },
+    "B12": {
+      "definition": "SWIR2",
+      "mean": 0.17152643179863386,
+      "std": 0.06228796575799113,
+      "weight": 0.07561084679309032,
+      "auc": 0.29981433267587115,
+      "background_mean": 0.2625244268812584,
+      "background_std": 0.13682707644577247
+    },
+    "ferric_oxide": {
+      "definition": "B4/B2",
+      "mean": 1.7176617484216212,
+      "std": 0.468496200621469,
+      "weight": 0.013171997030420303,
+      "auc": 0.4651261012491782,
+      "background_mean": 1.7710890561231676,
+      "background_std": 0.46884217335533934
+    },
+    "iron_nd": {
+      "definition": "(B4-B2)/(B4+B2)",
+      "mean": 0.24384875365667089,
+      "std": 0.12047582094449222,
+      "weight": 0.013171997030420303,
+      "auc": 0.4651261012491782,
+      "background_mean": 0.25998377101913095,
+      "background_std": 0.11109186357768336
+    },
+    "ferrous_iron": {
+      "definition": "B11/B8",
+      "mean": 1.1241934255846506,
+      "std": 0.31195889728161386,
+      "weight": 0.013681561647683646,
+      "auc": 0.46377698882314267,
+      "background_mean": 1.1272594819384358,
+      "background_std": 0.25822320691587713
+    },
+    "gossan": {
+      "definition": "B11/B4",
+      "mean": 2.3338582318033865,
+      "std": 0.8058257408752163,
+      "weight": 0.031107082272733705,
+      "auc": 0.5823584483892177,
+      "background_mean": 2.1964458674116774,
+      "background_std": 0.9367066579105208
+    },
+    "clay": {
+      "definition": "B11/B12",
+      "mean": 1.3653041082336972,
+      "std": 0.27431759757551355,
+      "weight": 0.026390281996833756,
+      "auc": 0.5698703484549639,
+      "background_mean": 1.3268596778439787,
+      "background_std": 0.3015878904386062
+    },
+    "ndvi": {
+      "definition": "(B8-B4)/(B8+B4)",
+      "mean": 0.32093958390791016,
+      "std": 0.20574847363836396,
+      "weight": 0.030564539984333634,
+      "auc": 0.5809220249835635,
+      "background_mean": 0.27460847190290455,
+      "background_std": 0.22858166242969377
+    },
+    "bsi": {
+      "definition": "((B11+B4)-(B8+B2))/((B11+B4)+(B8+B2))",
+      "mean": 0.09134427226591513,
+      "std": 0.13616597484321138,
+      "weight": 0.020222861512256687,
+      "auc": 0.446458382642998,
+      "background_mean": 0.105213005512778,
+      "background_std": 0.12910721713774553
+    },
+    "brightness": {
+      "definition": "mean(B2,B3,B4,B8,B11,B12)",
+      "mean": 0.1432885787853808,
+      "std": 0.03746182124582985,
+      "weight": 0.09379942304968363,
+      "auc": 0.25165864562787643,
+      "background_mean": 0.21307471863669417,
+      "background_std": 0.09224150189275508
+    },
+    "ST_p10": {
+      "definition": "Landsat 8/9 ST_B10 (K) 10th percentile",
+      "mean": 290.89807742506656,
+      "std": 10.329478461438942,
+      "weight": 0.0067077775056126636,
+      "auc": 0.5177593688362919,
+      "background_mean": 290.1843994597932,
+      "background_std": 10.767707823967735
+    },
+    "ST_p50": {
+      "definition": "median",
+      "mean": 303.3122597465716,
+      "std": 7.494712888632134,
+      "weight": 0.03703054745516675,
+      "auc": 0.401958711374096,
+      "background_mean": 306.16192286022414,
+      "background_std": 8.840431284624474
+    },
+    "ST_p90": {
+      "definition": "90th percentile",
+      "mean": 314.0154217172409,
+      "std": 7.435172954371039,
+      "weight": 0.06079095950918101,
+      "auc": 0.33905115055884283,
+      "background_mean": 318.7641870628457,
+      "background_std": 9.520790109242135
+    },
+    "lst_range": {
+      "definition": "ST_p90 - ST_p10",
+      "mean": 23.055837224617708,
+      "std": 9.21822974133979,
+      "weight": 0.05361752139426413,
+      "auc": 0.358043392504931,
+      "background_mean": 28.53988443384614,
+      "background_std": 10.943882927226133
+    },
+    "elevation": {
+      "definition": "ALOS AW3D30 DSM (m)",
+      "mean": 674.3253105301035,
+      "std": 613.7099661478763,
+      "weight": 0.014158843906153495,
+      "auc": 0.46251334648257725,
+      "background_mean": 868.5084454493264,
+      "background_std": 927.9556765378848
+    },
+    "slope": {
+      "definition": "degrees from ALOS DSM",
+      "mean": 12.17532829961761,
+      "std": 7.599860160878451,
+      "weight": 0.08810928482357644,
+      "auc": 0.7332762656147273,
+      "background_mean": 6.877987193268625,
+      "background_std": 7.894210005532296
+    }
+  }
+}