{
  "dataset": "Fleeting Nashville window half-life",
  "experiment": "EXP-0072",
  "generated": "2026-08-26",
  "source": "Fleeting weekly discovery crawl (scripts/out/<date>/candidates.json)",
  "methodology": "A window is a distinct (title, venue) in the crawl record. Days-open is counted inclusively from the listing's stated open date to its stated close date (a one-night event = 1 day); only windows carrying both parseable dates are included. Half-life is the median days-open per category. Categories are normalized from freeform labels by keyword; buckets below n=15 are held back.",
  "provenance": {
    "snapshots": [
      "2026-06-25",
      "2026-07-02",
      "2026-07-16",
      "2026-07-23",
      "2026-07-30",
      "2026-08-06",
      "2026-08-13",
      "2026-08-20",
      "2026-08-27"
    ],
    "snapshot_count": 9,
    "span_start": "2026-06-25",
    "span_end": "2026-08-27",
    "windows_total": 1442,
    "windows_dated": 775,
    "sample_n": 750,
    "overall_half_life_days": 1.0,
    "min_n": 15,
    "survive_days": 7,
    "held_back": [
      [
        "market",
        7
      ]
    ]
  },
  "categories": [
    {
      "category": "concert & live music",
      "n": 301,
      "half_life_days": 1,
      "p25_days": 1.0,
      "p75_days": 1.0,
      "min_days": 1,
      "max_days": 46,
      "survive_7d_pct": 6
    },
    {
      "category": "special event",
      "n": 106,
      "half_life_days": 1.0,
      "p25_days": 1.0,
      "p75_days": 1.0,
      "min_days": 1,
      "max_days": 154,
      "survive_7d_pct": 9
    },
    {
      "category": "tasting & dinner",
      "n": 103,
      "half_life_days": 1,
      "p25_days": 1.0,
      "p75_days": 1.0,
      "min_days": 1,
      "max_days": 366,
      "survive_7d_pct": 15
    },
    {
      "category": "ticketed experience",
      "n": 81,
      "half_life_days": 1,
      "p25_days": 1.0,
      "p75_days": 1.0,
      "min_days": 1,
      "max_days": 198,
      "survive_7d_pct": 15
    },
    {
      "category": "pop-up",
      "n": 31,
      "half_life_days": 1,
      "p25_days": 1.0,
      "p75_days": 34.0,
      "min_days": 1,
      "max_days": 93,
      "survive_7d_pct": 32
    },
    {
      "category": "gallery & exhibition",
      "n": 16,
      "half_life_days": 1.0,
      "p25_days": 1.0,
      "p75_days": 13.8,
      "min_days": 1,
      "max_days": 185,
      "survive_7d_pct": 31
    },
    {
      "category": "festival",
      "n": 82,
      "half_life_days": 2.0,
      "p25_days": 1.0,
      "p75_days": 3.0,
      "min_days": 1,
      "max_days": 76,
      "survive_7d_pct": 18
    },
    {
      "category": "limited run",
      "n": 30,
      "half_life_days": 16.5,
      "p25_days": 9.0,
      "p75_days": 30.0,
      "min_days": 1,
      "max_days": 497,
      "survive_7d_pct": 80
    }
  ]
}