{
  "cleaning": {
    "exact_duplicate_price_volume_rows_removed": 7,
    "input_rows": 129,
    "model_rows": 121,
    "rows_below_minimum_or_invalid": 1
  },
  "historical_v3_before_cleaning": {
    "leave_one_marketplace_out": {
      "exact_price_band_accuracy": 0.627906976744186,
      "mae_cad": 682290.6093685982,
      "median_absolute_error_cad": 368350.4304240076,
      "median_absolute_percentage_error": 0.38843124132751733,
      "r_squared": 0.400670471586558,
      "spearman_rank_correlation": 0.8205066895877071,
      "within_25_percent_rate": 0.3178294573643411,
      "within_50_percent_rate": 0.7131782945736435,
      "within_one_price_band_accuracy": 0.9457364341085271
    },
    "model_rows": 129
  },
  "limitations": [
    "The target is seller asking price, not a completed sale price.",
    "The two marketplaces are heavily imbalanced.",
    "Listings are seller reported and may be stale, duplicated, incomplete, or strategically priced.",
    "The model uses annual prescription volume only.",
    "Inventory, working capital, leasehold, real estate, debt, cash, and transaction structure are not normalized in the target.",
    "The software and research have not received independent valuation, accounting, or software review."
  ],
  "model_version": "asking-price-business-log-rx-alpha-4.0.0",
  "release_version": "0.1.0-alpha",
  "schema_version": "pharmacyatlas-asking-price-alpha-metrics-v1",
  "target": "seller_reported_business_only_asking_price_cad",
  "validation": {
    "leave_one_listing_out": {
      "exact_price_band_accuracy": 0.7272727272727273,
      "mae_cad": 492869.93081422796,
      "median_absolute_error_cad": 274931.8765634189,
      "median_absolute_percentage_error": 0.2786521000063498,
      "r_squared": 0.6634274127264295,
      "spearman_rank_correlation": 0.8282543379148815,
      "within_25_percent_rate": 0.4380165289256198,
      "within_50_percent_rate": 0.7520661157024794,
      "within_one_price_band_accuracy": 0.9421487603305785
    },
    "leave_one_marketplace_out": {
      "exact_price_band_accuracy": 0.6363636363636364,
      "mae_cad": 672506.2047327835,
      "median_absolute_error_cad": 305830.63775630714,
      "median_absolute_percentage_error": 0.3846164877632398,
      "r_squared": 0.4002650386014446,
      "spearman_rank_correlation": 0.8347923378036068,
      "within_25_percent_rate": 0.33884297520661155,
      "within_50_percent_rate": 0.7272727272727273,
      "within_one_price_band_accuracy": 0.9586776859504132
    },
    "leave_one_marketplace_out_by_marketplace": {
      "marketplace_a": {
        "exact_price_band_accuracy": 0.6371681415929203,
        "mae_cad": 710098.686220703,
        "median_absolute_error_cad": 368350.4304240076,
        "median_absolute_percentage_error": 0.3846164877632398,
        "r_squared": 0.3670972925239122,
        "rows": 113,
        "spearman_rank_correlation": 0.8180851517974699,
        "within_25_percent_rate": 0.3274336283185841,
        "within_50_percent_rate": 0.7345132743362832,
        "within_one_price_band_accuracy": 0.9557522123893806
      },
      "marketplace_b": {
        "exact_price_band_accuracy": 0.625,
        "mae_cad": 141512.4037159231,
        "median_absolute_error_cad": 155449.96346149629,
        "median_absolute_percentage_error": 0.2966919706844624,
        "r_squared": 0.9101179059554997,
        "rows": 8,
        "spearman_rank_correlation": 0.6343350474165467,
        "within_25_percent_rate": 0.5,
        "within_50_percent_rate": 0.625,
        "within_one_price_band_accuracy": 1.0
      }
    },
    "mae_improvement_vs_marketplace_median_baseline": 0.4761434913402208,
    "marketplace_median_baseline": {
      "exact_price_band_accuracy": 0.1652892561983471,
      "mae_cad": 1283760.3305785125,
      "median_absolute_error_cad": 900000.0,
      "median_absolute_percentage_error": 0.7647058823529411,
      "r_squared": -0.8399627545577708,
      "spearman_rank_correlation": -0.3105342093034569,
      "within_25_percent_rate": 0.09917355371900827,
      "within_50_percent_rate": 0.256198347107438,
      "within_one_price_band_accuracy": 0.39669421487603307
    }
  }
}