{
  "model_id": "rohitm9/surfaceWaterGlobal_flood",
  "version": "1.1.0",
  "created": "2026-11-05",
  "task": "binary-semantic-segmentation (water incl. flood water)",
  "framework": [
    "pytorch",
    "fastai"
  ],
  "architecture": "resnet34-unet-with-aef-bottleneck",
  "inputs": {
    "sentinel_1": {
      "bands": 3,
      "order": [
        "VV",
        "VH",
        "angle"
      ],
      "source": "Earth Engine COPERNICUS/S1_GRD, dB, 10 m"
    },
    "alphaearth": {
      "bands": 64,
      "order": "source order",
      "year_rule": "max(S1 year - 1, 2017)"
    }
  },
  "aef_projection": {
    "input_channels": 64,
    "output_channels": 16,
    "kernel_size": 1
  },
  "aef_dropout_p": 0.0,
  "training": {
    "sets": "W (Sen1Floods11 weak labels) + O (global post-flood chips, Dynamic World label class all water)",
    "train_chips": 6994,
    "valid_chips": 504,
    "loss": "ce_dice",
    "sampling": "every 512 px tile of every chip once per epoch, area weighted",
    "checkpoint_selection": "source_balanced_water_iou, best over all stages"
  },
  "normalization": "band_stats.npz next to each checkpoint (67 bands S1+AEF, 3 bands S1-only)",
  "evaluation_files": [
    "evaluation/summary_all_tests.csv",
    "evaluation/per_seed.csv",
    "evaluation/per_event.csv",
    "evaluation/contrasts_event_bootstrap.csv"
  ],
  "evaluation_note": "evaluation/*.csv report means over 3 training seeds (42, 43, 44); only seed 42 of each model is distributed. Seed 43/44 thresholds: S1+AEF 0.05/0.10, S1-only 0.05/0.04.",
  "models": {
    "s1_aef": {
      "model_kind": "s1aef",
      "run_dir": "seed42",
      "inputs": "S1 (3) + AEF (64)",
      "internal_run_name": "full_coverage_v1/FC_AEF_WO",
      "checkpoint": "seed42/models/s1aef_bottleneck_resnet34_best.pth",
      "checkpoint_sha256": "cddb479fe11b24ca5f70d460924e5f35b640cbc2f5894a5f931f78bd8dddebe4",
      "validation_threshold": 0.1,
      "validation_water_iou_tta": 0.7359
    },
    "s1_only": {
      "model_kind": "s1",
      "run_dir": "s1_only/seed42",
      "inputs": "S1 (3)",
      "internal_run_name": "full_coverage_v1/FC_S1_WO",
      "checkpoint": "s1_only/seed42/models/s1dw_resnet34_best.pth",
      "checkpoint_sha256": "f553e8a6477c9b468b5b2b37dc4b771ca812123c3d420a788983f516728b68bd",
      "validation_threshold": 0.04,
      "validation_water_iou_tta": 0.7065
    }
  }
}