pack.json

{
  "status": "packed",
  "scanned": 5052756,
  "train_n": 4041400,
  "eval_full_n": 1011356,
  "val_n": 8192,
  "overlap_dropped": 0,
  "val_method": "piece_stratified_hash_holdout_frozen",
  "piece_min": 16,
  "piece_max": 26,
  "val_piece_hist": {
    "16": 744,
    "17": 745,
    "18": 744,
    "19": 745,
    "20": 744,
    "21": 745,
    "22": 745,
    "23": 745,
    "24": 745,
    "25": 745,
    "26": 745
  },
  "note": "Frozen val. Later shards: train-hash only, one-hot best line, value_valid=1.",
  "hf_model": "avewright/middlegame-model",
  "hf_data": "avewright/lichess-middlegame-bestline"
}