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create_splits.py
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create_splits.py
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#!/usr/bin/env python
import argparse
import math
import os
import random
from utils import CorpusReader
def main(args):
if args.num_folds <= 1:
raise ValueError('number of folds is at least 2, found', args.num_folds)
random.seed(args.seed)
reader = CorpusReader(args.path, encoding=args.encoding)
tagged_sents = list(reader.tagged_sents())
random.shuffle(tagged_sents)
for fold in range(args.num_folds):
test, rest = [], []
for id_, _ in enumerate(tagged_sents):
if id_ % args.num_folds == fold:
test.append(id_)
else:
rest.append(id_)
n_dev = math.floor(args.dev * len(rest))
dev, train = rest[:n_dev], rest[n_dev:]
for split, name in ((train, 'train'), (dev, 'dev'), (test, 'test')):
filename = f'{name}.{fold+1:02}.txt'
path = os.path.join(args.outdir, filename)
with open(path, 'w', encoding=args.encoding) as f:
for id_ in split:
print(id_, file=f)
if __name__ == '__main__':
parser = argparse.ArgumentParser(
description='Create splits from a TSV corpus.',
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('path', help='path to the TSV corpus file')
parser.add_argument('--encoding', default='utf-8', help='file encoding')
parser.add_argument(
'--dev', type=float, default=0.1, help='proportion of dev set (from train set)')
parser.add_argument('--num-folds', '-k', type=int, default=5, help='number of folds')
parser.add_argument(
'-o', '--output-directory', dest='outdir', default=os.getcwd(), help='output directory')
parser.add_argument('--seed', type=int, default=12345, help='random seed')
args = parser.parse_args()
main(args)