{
  "truth_cutoff": "2026-09-16",
  "calendar_weeks": [
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    "2023-09-09",
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    "2023-09-30",
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    "2024-08-24",
    "2024-08-31",
    "2024-09-07",
    "2024-09-14",
    "2024-09-21",
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    "2024-10-12",
    "2024-10-19",
    "2024-10-26",
    "2024-11-02",
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    "2025-02-01",
    "2025-02-08",
    "2025-02-15",
    "2025-02-22",
    "2025-03-01",
    "2025-03-08",
    "2025-03-15",
    "2025-03-22",
    "2025-03-29",
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    "2025-04-12",
    "2025-04-19",
    "2025-04-26",
    "2025-05-03",
    "2025-05-10",
    "2025-05-17",
    "2025-05-24",
    "2025-05-31",
    "2025-06-07",
    "2025-06-14",
    "2025-06-21",
    "2025-06-28",
    "2025-07-05",
    "2025-07-12",
    "2025-07-19",
    "2025-07-26",
    "2025-08-02",
    "2025-08-09",
    "2025-08-16",
    "2025-08-23",
    "2025-08-30",
    "2025-09-06",
    "2025-09-13",
    "2025-09-20",
    "2025-09-27",
    "2025-10-04",
    "2025-10-11",
    "2025-10-18",
    "2025-10-25",
    "2025-11-01",
    "2025-11-08",
    "2025-11-15",
    "2025-11-22",
    "2025-11-29",
    "2025-12-06",
    "2025-12-13",
    "2025-12-20",
    "2025-12-27",
    "2026-01-03",
    "2026-01-10",
    "2026-01-17",
    "2026-01-24",
    "2026-01-31",
    "2026-02-07",
    "2026-02-14",
    "2026-02-21",
    "2026-02-28",
    "2026-03-07",
    "2026-03-14",
    "2026-03-21",
    "2026-03-28",
    "2026-04-04",
    "2026-04-11",
    "2026-04-18",
    "2026-04-25",
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    "2026-05-16",
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    "2026-05-30",
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    "2026-06-20",
    "2026-06-27",
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    "2026-07-11",
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    "2026-07-25",
    "2026-08-01"
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    "target_location_example": "One issuance/channel/location with at least one valid output week.",
    "finalized_comparator": "Same B1 pinned labels/source policy/support, used counterfactually as context. Isolates vintage availability.",
    "masking": "Natural availability only, before artificial training dropout.",
    "empty_history": "Missing focal histories remain trainable through other channels; even all-missing local histories are retained when the overall episode has inputs."
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  "source_manifests": [
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      "source": "hub_flusight_current",
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  ],
  "b0_comparison": {
    "start": "2023-09-02",
    "interpretation": "Supplied B0 NPZ, same four future horizons, model calendar and issuance dates. Source/support differences remain; this is not an isolated effect of vintage availability.",
    "snapshots": [
      {
        "dataset": "cdc_nhsn_final",
        "snapshot_id": "20260914T201316.612613Z"
      },
      {
        "dataset": "cdc_nssp_trajectories",
        "snapshot_id": "20260914T201420.344071Z"
      }
    ],
    "sections": {
      "full_period": {
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        "b1_episodes": 149,
        "lost_episodes": 3,
        "gained_episodes": 0,
        "lost_percent": 1.9736842105263157,
        "lost_issuance_dates": [
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          "2023-09-13",
          "2023-09-20"
        ]
      },
      "short_run_fitting_partition": {
        "b0_episodes": 90,
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        "lost_episodes": 3,
        "gained_episodes": 0,
        "lost_percent": 3.3333333333333335,
        "lost_issuance_dates": [
          "2023-09-06",
          "2023-09-13",
          "2023-09-20"
        ]
      }
    }
  },
  "dataset_sha256": "e52eee71ab1b2646f8d39bea1ddc951c22551c17866ad738a348f3123507ba8c",
  "b0_dataset_sha256": "4b5a82c31abaab84c4db8a0f8a7869d5021c811924f7e3444ca8726fd4f2bf9a"
}
