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PaddleSpeech/train.py

125 lines
5.0 KiB

"""Trainer for DeepSpeech2 model."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import argparse
import functools
import paddle.v2 as paddle
from models.model import DeepSpeech2Model
from data_utils.data import DataGenerator
from utils.utility import add_arguments, print_arguments
parser = argparse.ArgumentParser(description=__doc__)
add_arg = functools.partial(add_arguments, argparser=parser)
# yapf: disable
add_arg('batch_size', int, 256, "Minibatch size.")
add_arg('trainer_count', int, 8, "# of Trainers (CPUs or GPUs).")
add_arg('num_passes', int, 200, "# of training epochs.")
add_arg('num_proc_data', int, 12, "# of CPUs for data preprocessing.")
add_arg('num_conv_layers', int, 2, "# of convolution layers.")
add_arg('num_rnn_layers', int, 3, "# of recurrent layers.")
add_arg('rnn_layer_size', int, 2048, "# of recurrent cells per layer.")
add_arg('num_iter_print', int, 100, "Every # iterations for printing "
"train cost.")
add_arg('learning_rate', float, 5e-4, "Learning rate.")
add_arg('max_duration', float, 27.0, "Longest audio duration allowed.")
add_arg('min_duration', float, 0.0, "Shortest audio duration allowed.")
add_arg('use_sortagrad', bool, True, "Use SortaGrad or not.")
add_arg('use_gpu', bool, True, "Use GPU or not.")
add_arg('use_gru', bool, False, "Use GRUs instead of simple RNNs.")
add_arg('is_local', bool, True, "Use pserver or not.")
add_arg('share_rnn_weights',bool, True, "Share input-hidden weights across "
"bi-directional RNNs. Not for GRU.")
add_arg('train_manifest', str,
'data/librispeech/manifest.train',
"Filepath of train manifest.")
add_arg('dev_manifest', str,
'data/librispeech/manifest.dev-clean',
"Filepath of validation manifest.")
add_arg('mean_std_path', str,
'data/librispeech/mean_std.npz',
"Filepath of normalizer's mean & std.")
add_arg('vocab_path', str,
'data/librispeech/eng_vocab.txt',
"Filepath of vocabulary.")
add_arg('init_model_path', str,
None,
"If None, the training starts from scratch, "
"otherwise, it resumes from the pre-trained model.")
add_arg('output_model_dir', str,
"./checkpoints",
"Directory for saving checkpoints.")
add_arg('augment_conf_path',str,
'conf/augmentation.config',
"Filepath of augmentation configuration file (json-format).")
add_arg('specgram_type', str,
'linear',
"Audio feature type. Options: linear, mfcc.",
choices=['linear', 'mfcc'])
add_arg('shuffle_method', str,
'batch_shuffle_clipped',
"Shuffle method.",
choices=['instance_shuffle', 'batch_shuffle', 'batch_shuffle_clipped'])
# yapf: disable
args = parser.parse_args()
def train():
"""DeepSpeech2 training."""
train_generator = DataGenerator(
vocab_filepath=args.vocab_path,
mean_std_filepath=args.mean_std_path,
augmentation_config=open(args.augment_conf_path, 'r').read(),
max_duration=args.max_duration,
min_duration=args.min_duration,
specgram_type=args.specgram_type,
num_threads=args.num_proc_data)
dev_generator = DataGenerator(
vocab_filepath=args.vocab_path,
mean_std_filepath=args.mean_std_path,
augmentation_config="{}",
specgram_type=args.specgram_type,
num_threads=args.num_proc_data)
train_batch_reader = train_generator.batch_reader_creator(
manifest_path=args.train_manifest,
batch_size=args.batch_size,
min_batch_size=args.trainer_count,
sortagrad=args.use_sortagrad if args.init_model_path is None else False,
shuffle_method=args.shuffle_method)
dev_batch_reader = dev_generator.batch_reader_creator(
manifest_path=args.dev_manifest,
batch_size=args.batch_size,
min_batch_size=1, # must be 1, but will have errors.
sortagrad=False,
shuffle_method=None)
ds2_model = DeepSpeech2Model(
vocab_size=train_generator.vocab_size,
num_conv_layers=args.num_conv_layers,
num_rnn_layers=args.num_rnn_layers,
rnn_layer_size=args.rnn_layer_size,
use_gru=args.use_gru,
pretrained_model_path=args.init_model_path,
share_rnn_weights=args.share_rnn_weights)
ds2_model.train(
train_batch_reader=train_batch_reader,
dev_batch_reader=dev_batch_reader,
feeding_dict=train_generator.feeding,
learning_rate=args.learning_rate,
gradient_clipping=400,
num_passes=args.num_passes,
num_iterations_print=args.num_iter_print,
output_model_dir=args.output_model_dir,
is_local=args.is_local)
def main():
print_arguments(args)
paddle.init(use_gpu=args.use_gpu, trainer_count=args.trainer_count)
train()
if __name__ == '__main__':
main()