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26d9e5b 62e368e e799ee4 0c1723c 33d949e e799ee4 26d9e5b 0c1723c 62e368e 0c1723c 62e368e 0c1723c 38cb927 44049cc 9d1c4bb 26d9e5b 38cb927 9d1c4bb 26d9e5b 39b6876 38cb927 62e368e 38cb927 0c1723c 62e368e b6473ab 62e368e 9d1c4bb 62e368e 0c1723c 62e368e 0c1723c 62e368e 0c1723c | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 | import logging
from datasets import (
GeneratorBasedBuilder,
DatasetInfo,
SplitGenerator,
Split,
DownloadManager,
Features,
Value,
Array2D,
)
from adversarial_gym.chess_env import ChessEnv
class ChessPGNDataset(GeneratorBasedBuilder):
VERSION = "0.0.1"
def _info(self):
return DatasetInfo(
description="Chess positions + moves + results, streamed from PGN shards",
features=Features({
"state": Array2D((8,8), dtype="int8"),
"action": Value("int16"),
"result": Value("int8"),
})
)
def _split_generators(self, dl_manager: DownloadManager):
from pathlib import Path
import os
if self.config.data_dir:
repo_root = Path(self.config.data_dir)
train_files = [repo_root / 'train' / f for f in os.listdir(repo_root / 'train')]
test_files = [repo_root / 'test' / f for f in os.listdir(repo_root / 'test')]
elif self.config.data_files:
train_files = self.config.data_files["train"]
test_files = self.config.data_files["test"]
train_paths = dl_manager.download(train_files)
test_paths = dl_manager.download(test_files)
return [
SplitGenerator(
name=Split.TRAIN,
gen_kwargs={"shards": train_paths},
),
SplitGenerator(
name=Split.TEST,
gen_kwargs={"shards": test_paths},
),
]
def _generate_examples(self, shards):
import chess.pgn
uid = 0
for path in shards:
with open(path, "r") as f:
while (game := chess.pgn.read_game(f)) is not None:
board = game.board()
base = {"1-0":1,"0-1":-1}.get(game.headers["Result"], 0)
for move in game.mainline_moves():
state = ChessEnv.get_piece_configuration(board)
state = state if board.turn else -state
action = ChessEnv.move_to_action(move)
result = base * (-1 if board.turn == 0 else 1)
yield uid, {
"state": state.astype("int8"),
"action": int(action),
"result": int(result),
}
uid += 1
board.push(move)
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