{
  "schema_version": 1,
  "updated": "2026-09-30",
  "source_document": "data_inspection/FINAL_DATASET_SUMMARY.md",
  "scope": "Current dataset working names and versioned split metadata; original source storage and legacy v1 remain unchanged.",
  "terms": {
    "hr": "fine-resolution LST",
    "lr": "coarse-resolution LST",
    "sequence_id": "calendar-month bundle identifier (HLC)",
    "fine_lst_role": "satellite-retrieved reference product",
    "temperature_decode": "stored / 100.0 (degrees Celsius); mask invalid values first",
    "reader_temperature_decode": "ds.denormalize(sample['image']) / 100.0; use reference_mask",
    "resolution_ratio": "256 / 8 = 32 is the array side-length ratio, not independent thermal information gain"
  },
  "datasets": [
    {
      "name": "HLS-LST-Pairs",
      "short_name": "HLP",
      "reader_id": "prithvi",
      "legacy_names": [
        "Prithvi Data",
        "prithvi_data"
      ],
      "record_unit": "HLS/fine LST patch pair",
      "records": 242416,
      "mgrs_tiles": 3094,
      "hls_samples": 242416,
      "fine_lst_samples": 242416,
      "splits": {
        "train": {
          "reader_split": "train",
          "tiles": 2796,
          "hls_samples": 218975,
          "fine_lst_samples": 218975
        },
        "validation": {
          "reader_split": "val",
          "tiles": 147,
          "hls_samples": 11684,
          "fine_lst_samples": 11684
        },
        "test": {
          "reader_split": "test",
          "tiles": 151,
          "hls_samples": 11757,
          "fine_lst_samples": 11757
        }
      },
      "storage": {
        "kind": "zip64_eoz",
        "path": "artifacts/prithvi_data_v1_20260909.zip"
      },
      "prepared_directory": "processed_data/hlp_split_v2_20260914/prithvi",
      "coarse_lst": "not delivered; synthetic degradation required",
      "continuous_time_series": false,
      "legacy_prepared_directory": "processed_data/v1/prithvi",
      "legacy_split_mapping": {
        "train": "train",
        "test": "val"
      },
      "reader_prepared_argument": "processed_data/hlp_split_v2_20260914",
      "split_version": "hlp-tile-validation-v2-20260914",
      "split_summary": "data_inspection/hlp_split_20260914/split_summary.json"
    },
    {
      "name": "HLS-LST-CrossSensor",
      "short_name": "HLC",
      "reader_id": "lstsr_tb",
      "legacy_names": [
        "LSTSR-TB",
        "LSTSR",
        "lstsr_tb_final_upload_20260721"
      ],
      "record_unit": "calendar-month bundle",
      "records": 277808,
      "mgrs_tiles": 2490,
      "hls_samples": 277808,
      "fine_lst_samples": 2892007,
      "splits": {
        "train": {
          "reader_split": "train",
          "hls_samples": 250449,
          "fine_lst_samples": 2608772
        },
        "validation": {
          "reader_split": "val",
          "hls_samples": 13694,
          "fine_lst_samples": 141711
        },
        "test": {
          "reader_split": "test",
          "hls_samples": 13665,
          "fine_lst_samples": 141524
        }
      },
      "storage": {
        "kind": "npz_directory",
        "path": "data_inspection/extracted_metadata/lstsr_tb_final_dataset_20260719"
      },
      "prepared_directory": "processed_data/v1/lstsr_tb",
      "coarse_lst": "Terra/MODIS MOD11A1 Collection 6.1; actual same-calendar-day coarse/fine pairs",
      "continuous_time_series": false,
      "full_membership_experiments": [
        {
          "run_id": "hlc-synthetic-full-epoch1-ddp2-io16-20260916-v3",
          "manifest": "experiments/efdiff_hlc/deadline_run_manifest.json",
          "train_fine_lst_months": 2608772,
          "epochs": 1,
          "val_fine_lst_months": 512,
          "test_used": false,
          "input": "synthetic Wald32 coarse LST and associated HLS",
          "split_membership_unchanged": true,
          "status": "complete; each model 2608772 records, 40763 updates, one epoch; 24-hour deadline met",
          "world_size_per_model": 2,
          "deadline_utc": "2026-09-18T04:23:04Z",
          "loader_workers_per_rank": 16,
          "local_full_test": {
            "status": "launched; see run manifest and live pipeline",
            "records": 141524,
            "crop": 224,
            "checkpoint": "fixed_epoch1_ema",
            "test_used_for_selection": false,
            "manifest": "experiments/efdiff_hlc/deadline_run_manifest.json",
            "live_pipeline": "output/efdiff_hlc_epoch1_deadline_io16_20260916/full_test_20260921/pipeline.json"
          }
        },
        {
          "run_id": "hlc-synthetic-full-epoch1-20260916-v1",
          "manifest": "experiments/efdiff_hlc/epoch1_run_manifest.json",
          "train_fine_lst_months": 2608772,
          "epochs": 1,
          "val_fine_lst_months": 512,
          "test_used": false,
          "input": "synthetic Wald32 coarse LST and associated HLS",
          "split_membership_unchanged": true,
          "status": "preparation superseded by deadline DDP2 run; statistics retained"
        }
      ],
      "experimental_subsets": [
        {
          "version": "efdiff-hlc-synthetic-pilot-16384-512-v1",
          "scope": "experiment-only fixed subset; original splits unchanged",
          "summary": "experiments/efdiff_hlc/pilot_membership/summary.json",
          "manifest": "experiments/efdiff_hlc/pilot_run_manifest.json",
          "train_fine_lst_months": 16384,
          "val_fine_lst_months": 512,
          "test_used": false,
          "input": "synthetic Wald32 coarse LST and associated HLS; no actual MODIS input"
        }
      ],
      "new_experiment_spatial_protocol": {
        "protocol": "efdiff-hlc-fixed-center224-no-flip-20260930-v1",
        "definition": "experiments/efdiff_hlc/center_crop_protocol.json",
        "scope": "New synthetic-degradation experiments only; original data, splits and frozen historical training unchanged",
        "shared_across_sequence_months": true,
        "shared_across_epochs": true,
        "crop": [
          16,
          240,
          16,
          240
        ],
        "random_flip": false
      }
    }
  ]
}