variance-report.json

{
  "database": "/Users/pawit/Documents/vexilon/tmp/vex-position-dataset/data/ccrl-high-variance-1p5m.vpd",
  "database_bytes": 438558720,
  "distributions": {
    "in_check": 103519,
    "material_imbalance_abs_ge_3": 234018,
    "phase": {
      "endgame": 375000,
      "middlegame": 900000,
      "opening": 234201
    },
    "result": {
      "0-1": 456873,
      "1-0": 570602,
      "1/2-1/2": 481726
    },
    "side_to_move": {
      "black": 751182,
      "white": 758019
    },
    "source_split": {
      "test": 307473,
      "train": 1201728
    },
    "with_castling_rights": 289814,
    "without_castling_rights": 1219387
  },
  "format": "VPD1",
  "high_variance": true,
  "metadata": {
    "candidates_attempted": "2115584",
    "completed_unix": "1787309415",
    "fen_fullmove_normalization": "1",
    "format": "VPD1",
    "games_seen": "910462",
    "parse_errors": "0",
    "phase_quotas": "{\"0\": 225000, \"1\": 900000, \"2\": 375000}",
    "position_count": "1509201",
    "seed": "91",
    "source": "/Users/pawit/Documents/vexilon/tmp/vex-position-dataset/source/ccrl-pgn.tar.bz2",
    "target_positions": "1500000"
  },
  "normalized_phase_entropy": 0.858704,
  "numeric": {
    "legal_moves": {
      "max": 87,
      "mean": 30.5172,
      "median": 33,
      "min": 0,
      "p10": 12,
      "p90": 44,
      "stdev": 12.064
    },
    "material_balance_white_minus_black": {
      "max": 75,
      "mean": 0.0943,
      "median": 0,
      "min": -51,
      "p10": -2,
      "p90": 2,
      "stdev": 2.6234
    },
    "piece_count": {
      "max": 32,
      "mean": 20.713,
      "median": 21,
      "min": 2,
      "p10": 10,
      "p90": 30,
      "stdev": 7.5146
    }
  },
  "positions": 1509201,
  "thresholds": {
    "at_least_1_5m_positions": true,
    "both_castling_states_at_least_10pct": true,
    "checks_at_least_1pct": true,
    "legal_move_p10_at_most_22": true,
    "legal_move_p90_at_least_38": true,
    "legal_move_stdev_at_least_8": true,
    "material_imbalance_at_least_15pct": true,
    "phase_entropy_at_least_0_85": true,
    "phase_min_share_at_least_15pct": true,
    "piece_count_stdev_at_least_5": true,
    "result_min_share_at_least_20pct": true,
    "side_to_move_between_47_and_53pct_white": true
  }
}