{
  "trained_at": "2026-04-26T06:46:09.798149+00:00",
  "data_run_date": "2026-04-25",
  "version": "v0.2-leakage-fixed",
  "fixes_vs_v0_1": [
    "prior_transfer_count replaces lifetime_transfer_count (no future leakage)",
    "$10 price floor (was $1) drops wash-trade noise",
    "fixed-window temporal split (train < 2023-10-01, val Q4 2023, test 2024+)",
    "recency-weighted sample weights (1y half-life)"
  ],
  "splits": {
    "train": {
      "rows": 265240,
      "start": "2022-01-28",
      "end": "2023-09-30"
    },
    "val": {
      "rows": 3545,
      "start": "2023-10-01",
      "end": "2023-12-31"
    },
    "test": {
      "rows": 2744,
      "start": "2024-01-01",
      "end": "2024-05-04"
    }
  },
  "feature_count": 146,
  "feature_cols": [
    "len",
    "n_digits",
    "n_letters",
    "n_special",
    "n_lower",
    "n_upper",
    "is_palindrome",
    "is_all_digits",
    "is_all_letters",
    "is_ascii",
    "has_unicode",
    "starts_digit",
    "ends_digit",
    "max_char_run",
    "n_unique_chars",
    "in_wikipedia",
    "in_geonames",
    "in_us_firstname",
    "in_iso3166",
    "in_ticker",
    "in_sec_edgar",
    "in_wiktionary_en",
    "wordlist_hits",
    "club__prepunk_full_rankings",
    "club__personas",
    "club__gamertags",
    "club__luxury",
    "club__top_nouns",
    "club__familynames_usa",
    "club__wikidata_top_fantasy_char",
    "club__firstnames_usa",
    "club__natural_wonders",
    "club__logistics",
    "club__social_handles",
    "club__top500_cities_usa",
    "club__common_english",
    "club__finance_terms",
    "club__performing_arts",
    "club__paranormal",
    "club__gamertags_double",
    "club__memes",
    "club__sports",
    "club__home",
    "club__top_crypto_names",
    "club__top500_cities_global",
    "club__catholicism",
    "club__country_codes",
    "club__fine_art",
    "club__us_government",
    "club__pokemon_gen3",
    "club__pokemon_gen4",
    "club__crypto_terms",
    "club__top_crypto_tickers",
    "club__crayola_classic",
    "club__us_states",
    "club__mythical_creatures",
    "club__historic_figures",
    "club__pokemon_gen2",
    "club__holidays",
    "club__common_animals",
    "club__pokemon_gen1",
    "club__conspiracy_theories",
    "club__gen_alpha",
    "club__currency_symbols",
    "club__currency_names",
    "n_clubs",
    "trademark_conflict",
    "name_age_days",
    "prior_transfer_count",
    "fg_value",
    "eth_tvl_usd",
    "eth_stable_mcap",
    "eth_dex_volume",
    "nft_total_fee_usd",
    "pca_000",
    "pca_001",
    "pca_002",
    "pca_003",
    "pca_004",
    "pca_005",
    "pca_006",
    "pca_007",
    "pca_008",
    "pca_009",
    "pca_010",
    "pca_011",
    "pca_012",
    "pca_013",
    "pca_014",
    "pca_015",
    "pca_016",
    "pca_017",
    "pca_018",
    "pca_019",
    "pca_020",
    "pca_021",
    "pca_022",
    "pca_023",
    "pca_024",
    "pca_025",
    "pca_026",
    "pca_027",
    "pca_028",
    "pca_029",
    "pca_030",
    "pca_031",
    "pca_032",
    "pca_033",
    "pca_034",
    "pca_035",
    "pca_036",
    "pca_037",
    "pca_038",
    "pca_039",
    "pca_040",
    "pca_041",
    "pca_042",
    "pca_043",
    "pca_044",
    "pca_045",
    "pca_046",
    "pca_047",
    "pca_048",
    "pca_049",
    "pca_050",
    "pca_051",
    "pca_052",
    "pca_053",
    "pca_054",
    "pca_055",
    "pca_056",
    "pca_057",
    "pca_058",
    "pca_059",
    "pca_060",
    "pca_061",
    "pca_062",
    "pca_063",
    "knn_count",
    "knn_mean_log",
    "knn_median_log",
    "knn_p90_log",
    "knn_max_sim",
    "knn_min_sim",
    "knn_log_max",
    "knn_log_min"
  ],
  "pca_dim": 64,
  "embedding_model": "sentence-transformers/all-mpnet-base-v2",
  "best_iteration": 170,
  "xgb_params": {
    "objective": "reg:squarederror",
    "eval_metric": "rmse",
    "tree_method": "hist",
    "device": "cuda",
    "max_depth": 7,
    "learning_rate": 0.04,
    "subsample": 0.85,
    "colsample_bytree": 0.65,
    "min_child_weight": 8,
    "reg_alpha": 0.5,
    "reg_lambda": 2.0,
    "seed": 42
  },
  "metrics": {
    "train": {
      "r2_log": 0.7700075507164001,
      "rmse_log": 0.7744038701057434,
      "mae_log": 0.5210891962051392,
      "median_ape": 0.32541945576667786,
      "bias_log": -0.0004094731993973255
    },
    "val": {
      "r2_log": 0.6602156162261963,
      "rmse_log": 1.0678441524505615,
      "mae_log": 0.7699634432792664,
      "median_ape": 0.5703179836273193,
      "bias_log": 0.2033758908510208
    },
    "test": {
      "r2_log": 0.3080594539642334,
      "rmse_log": 1.5469372272491455,
      "mae_log": 1.2711551189422607,
      "median_ape": 1.3828195333480835,
      "bias_log": 0.7319739460945129
    }
  },
  "top_features": [
    {
      "name": "knn_mean_log",
      "gain": 1713.8084716796875
    },
    {
      "name": "knn_p90_log",
      "gain": 1612.9539794921875
    },
    {
      "name": "len",
      "gain": 1364.2567138671875
    },
    {
      "name": "in_wikipedia",
      "gain": 1052.1461181640625
    },
    {
      "name": "is_all_digits",
      "gain": 943.7355346679688
    },
    {
      "name": "knn_median_log",
      "gain": 604.246337890625
    },
    {
      "name": "n_digits",
      "gain": 337.8750305175781
    },
    {
      "name": "pca_000",
      "gain": 289.33624267578125
    },
    {
      "name": "n_clubs",
      "gain": 281.8310546875
    },
    {
      "name": "ends_digit",
      "gain": 276.56658935546875
    },
    {
      "name": "name_age_days",
      "gain": 274.4316101074219
    },
    {
      "name": "n_unique_chars",
      "gain": 267.8934020996094
    },
    {
      "name": "club__gamertags",
      "gain": 267.10980224609375
    },
    {
      "name": "starts_digit",
      "gain": 259.8104248046875
    },
    {
      "name": "n_special",
      "gain": 258.7098693847656
    },
    {
      "name": "pca_001",
      "gain": 238.66867065429688
    },
    {
      "name": "n_letters",
      "gain": 217.4210662841797
    },
    {
      "name": "knn_log_max",
      "gain": 214.86541748046875
    },
    {
      "name": "trademark_conflict",
      "gain": 213.1521453857422
    },
    {
      "name": "pca_034",
      "gain": 211.79525756835938
    },
    {
      "name": "is_ascii",
      "gain": 211.76641845703125
    },
    {
      "name": "eth_stable_mcap",
      "gain": 204.28631591796875
    },
    {
      "name": "has_unicode",
      "gain": 198.2250518798828
    },
    {
      "name": "wordlist_hits",
      "gain": 196.23956298828125
    },
    {
      "name": "n_lower",
      "gain": 189.0078887939453
    }
  ]
}