mirror of
https://github.com/k2-fsa/icefall.git
synced 2025-08-08 09:32:20 +00:00
99 lines
2.7 KiB
Python
Executable File
99 lines
2.7 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
# Copyright 2021 Xiaomi Corp. (authors: Fangjun Kuang)
|
|
#
|
|
# See ../../../../LICENSE for clarification regarding multiple authors
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
"""
|
|
This file takes as input a lexicon.txt and output a new lexicon,
|
|
in which each word has a unique pronunciation.
|
|
|
|
The way to do this is to keep only the first pronunciation of a word
|
|
in lexicon.txt.
|
|
"""
|
|
|
|
|
|
import argparse
|
|
import logging
|
|
from pathlib import Path
|
|
from typing import List, Tuple
|
|
|
|
from icefall.lexicon import read_lexicon, write_lexicon
|
|
|
|
|
|
def get_args():
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument(
|
|
"--lang-dir",
|
|
type=str,
|
|
help="""Input and output directory.
|
|
It should contain a file lexicon.txt.
|
|
This file will generate a new file uniq_lexicon.txt
|
|
in it.
|
|
""",
|
|
)
|
|
|
|
return parser.parse_args()
|
|
|
|
|
|
def filter_multiple_pronunications(
|
|
lexicon: List[Tuple[str, List[str]]]
|
|
) -> List[Tuple[str, List[str]]]:
|
|
"""Remove multiple pronunciations of words from a lexicon.
|
|
|
|
If a word has more than one pronunciation in the lexicon, only
|
|
the first one is kept, while other pronunciations are removed
|
|
from the lexicon.
|
|
|
|
Args:
|
|
lexicon:
|
|
The input lexicon, containing a list of (word, [p1, p2, ..., pn]),
|
|
where "p1, p2, ..., pn" are the pronunciations of the "word".
|
|
Returns:
|
|
Return a new lexicon where each word has a unique pronunciation.
|
|
"""
|
|
seen = set()
|
|
ans = []
|
|
|
|
for word, tokens in lexicon:
|
|
if word in seen:
|
|
continue
|
|
seen.add(word)
|
|
ans.append((word, tokens))
|
|
return ans
|
|
|
|
|
|
def main():
|
|
args = get_args()
|
|
lang_dir = Path(args.lang_dir)
|
|
|
|
lexicon_filename = lang_dir / "lexicon.txt"
|
|
|
|
in_lexicon = read_lexicon(lexicon_filename)
|
|
|
|
out_lexicon = filter_multiple_pronunications(in_lexicon)
|
|
|
|
write_lexicon(lang_dir / "uniq_lexicon.txt", out_lexicon)
|
|
|
|
logging.info(f"Number of entries in lexicon.txt: {len(in_lexicon)}")
|
|
logging.info(f"Number of entries in uniq_lexicon.txt: {len(out_lexicon)}")
|
|
|
|
|
|
if __name__ == "__main__":
|
|
formatter = "%(asctime)s %(levelname)s [%(filename)s:%(lineno)d] %(message)s"
|
|
|
|
logging.basicConfig(format=formatter, level=logging.INFO)
|
|
|
|
main()
|