{
  "status": "packed",
  "scanned": 80000,
  "train_n": 63795,
  "eval_full_n": 16205,
  "val_n": 8192,
  "overlap_dropped": 0,
  "val_method": "piece_stratified_hash_holdout_frozen",
  "piece_min": 26,
  "piece_max": 32,
  "val_piece_hist": {
    "26": 1176,
    "27": 859,
    "28": 1222,
    "29": 1178,
    "30": 1278,
    "31": 1178,
    "32": 1301
  },
  "note": "Frozen val. Later shards: train-hash only, one-hot best line, value_valid=1.",
  "hf_model": "avewright/opening-model",
  "hf_data": "avewright/lichess-opening-bestline"
}