if args.decoder == "beam":
scorer = None
if args.lm_path is not None:
scorer = KenLMScorer(labels, args.lm_path, args.trie_path)
scorer.set_lm_weight(args.lm_alpha)
scorer.set_word_weight(args.lm_beta1)
scorer.set_valid_word_weight(args.lm_beta2)
else:
scorer = Scorer()
decoder = BeamCTCDecoder(labels, scorer, beam_width=args.beam_width, top_paths=1, space_index=labels.index(' '), blank_index=labels.index('_'))
else:
decoder = GreedyDecoder(labels, space_index=labels.index('<space>'), blank_index=labels.index('_'))
test_dataset = SpectrogramDataset(audio_conf=audio_conf, manifest_filepath=args.test_manifest, labels=labels,
normalize=True)
test_loader = AudioDataLoader(test_dataset, batch_size=args.batch_size,
num_workers=args.num_workers)
total_cer, total_wer = 0, 0
for i, (data) in enumerate(test_loader):
inputs, targets, input_percentages, target_sizes = data
inputs = Variable(inputs, volatile=True)
# unflatten targets
split_targets = []
offset = 0
for size in target_sizes:
split_targets.append(targets[offset:offset + size])
offset += size
if args.cuda:
inputs = inputs.cuda()
def main():
global args, train_logger, test_logger
args = options.parse_args()
os.makedirs(args.log_dir)
test_logger = Logger(os.path.join(args.log_dir, 'test.log'))
with open(os.path.join(args.log_dir, 'config.log'), 'w') as f:
f.write(args.config_str)
if not args.evaluate:
os.makedirs(args.checkpoint_dir)
train_logger = Logger(os.path.join(args.log_dir, 'train.log'))
loss_results, cer_results = torch.FloatTensor(
args.epochs), torch.FloatTensor(args.epochs)
if args.visdom:
from visdom import Visdom
viz = Visdom()
opts = dict(title=args.experiment_id,
ylabel='',
xlabel='Epoch',
legend=['Loss', 'CER'])
viz_windows = None
epochs = torch.arange(0, args.epochs)
if args.resume:
print('Loading checkpoint model %s' % args.resume)
checkpoint = torch.load(args.resume)
model = DeepSpeech.load_model_checkpoint(checkpoint)
model = torch.nn.DataParallel(model,
device_ids=[i for i in range(args.nGPU)
]).cuda()
labels = DeepSpeech.get_labels(model)
audio_conf = DeepSpeech.get_audio_conf(model)
parameters = model.parameters()
optimizer = torch.optim.SGD(parameters,
lr=args.lr,
momentum=args.momentum,
nesterov=True)
optimizer.load_state_dict(checkpoint['optimizer'])
start_epoch = int(checkpoint.get('epoch',
0)) # Index start at 0 for training
loss_results, cer_results = checkpoint['loss_results'], checkpoint[
'cer_results']
if args.epochs > loss_results.numel():
loss_results.resize_(args.epochs)
cer_results.resize_(args.epochs)
loss_results[start_epoch:].zero_()
cer_results[start_epoch:].zero_()
# Add previous scores to visdom graph
if args.visdom and loss_results is not None:
x_axis = epochs[0:start_epoch]
y_axis = torch.stack(
(loss_results[0:start_epoch], cer_results[0:start_epoch]),
dim=1)
viz_window = viz.line(
X=x_axis,
Y=y_axis,
opts=opts,
)
else:
start_epoch = args.start_epoch
with open(args.labels_path) as label_file:
labels = str(''.join(json.load(label_file)))
audio_conf = dict(sample_rate=args.sample_rate,
window_size=args.window_size,
window_stride=args.window_stride,
window=args.window,
noise_dir=args.noise_dir,
noise_prob=args.noise_prob,
noise_levels=(args.noise_min, args.noise_max))
model = DeepSpeech(rnn_hidden_size=args.hidden_size,
nb_layers=args.hidden_layers,
labels=labels,
rnn_type=supported_rnns[args.rnn_type],
audio_conf=audio_conf,
bidirectional=not args.look_ahead)
model = torch.nn.DataParallel(model,
device_ids=[i for i in range(args.nGPU)
]).cuda()
parameters = model.parameters()
optimizer = torch.optim.SGD(parameters,
lr=args.lr,
momentum=args.momentum,
nesterov=True)
# define loss function (criterion) and decoder
best_cer = None
criterion = CTCLoss()
decoder = GreedyDecoder(labels)
# define dataloader
if not args.evaluate:
train_dataset = SpectrogramDataset(
audio_conf=audio_conf,
manifest_filepath=args.train_manifest,
labels=labels,
normalize=True,
augment=args.augment)
train_sampler = BucketingSampler(train_dataset,
batch_size=args.batch_size)
train_loader = AudioDataLoader(train_dataset,
num_workers=args.num_workers,
batch_sampler=train_sampler)
if not args.in_order and start_epoch != 0:
print("Shuffling batches for the following epochs")
train_sampler.shuffle()
val_dataset = SpectrogramDataset(audio_conf=audio_conf,
manifest_filepath=args.val_manifest,
labels=labels,
normalize=True,
augment=False)
val_loader = AudioDataLoader(val_dataset,
batch_size=args.batch_size,
num_workers=args.num_workers)
print(model)
print("Number of parameters: %d" % DeepSpeech.get_param_size(model))
if args.evaluate:
validate(val_loader, model, decoder, 0)
return
for epoch in range(start_epoch, args.epochs):
avg_loss = train(train_loader, train_sampler, model, criterion,
optimizer, epoch)
cer = validate(val_loader, model, decoder, epoch)
loss_results[epoch] = avg_loss
cer_results[epoch] = cer
adjust_learning_rate(optimizer)
is_best = False
if best_cer is None or best_cer > cer:
print('Found better validated model')
best_cer = cer
is_best = True
save_checkpoint(
DeepSpeech.serialize(model,
optimizer=optimizer,
epoch=epoch,
loss_results=loss_results,
cer_results=cer_results), is_best, epoch)
if not args.in_order:
print("Shuffling batches...")
train_sampler.shuffle()
if args.visdom:
x_axis = epochs[0:epoch + 1]
y_axis = torch.stack(
(loss_results[0:epoch + 1], cer_results[0:epoch + 1]), dim=1)
if viz_window is None:
viz_window = viz.line(
X=x_axis,
Y=y_axis,
opts=opts,
)
else:
viz.line(
X=x_axis.unsqueeze(0).expand(y_axis.size(1),
x_axis.size(0)).transpose(
0, 1), # Visdom fix
Y=y_axis,
win=viz_window,
update='replace',
)
def main():
global char2index
global index2char
global SOS_token
global EOS_token
global PAD_token
parser = argparse.ArgumentParser(description='LAS')
parser.add_argument('--model-name', type=str, default='LAS')
# Dataset
parser.add_argument('--train-file',
type=str,
help='data list about train dataset',
default='data/ClovaCall/train_ClovaCall.json')
parser.add_argument('--test-file-list',
nargs='*',
help='data list about test dataset',
default=['data/ClovaCall/test_ClovCall.json'])
parser.add_argument('--labels-path',
default='data/kor_syllable.json',
help='Contains large characters over korean')
parser.add_argument('--dataset-path',
default='data/ClovaCall/clean',
help='Target dataset path')
# Hyperparameters
parser.add_argument('--rnn-type',
default='lstm',
help='Type of the RNN. rnn|gru|lstm are supported')
parser.add_argument('--encoder_layers',
type=int,
default=3,
help='number of layers of model (default: 3)')
parser.add_argument('--encoder_size',
type=int,
default=512,
help='hidden size of model (default: 512)')
parser.add_argument('--decoder_layers',
type=int,
default=2,
help='number of pyramidal layers (default: 2)')
parser.add_argument('--decoder_size',
type=int,
default=512,
help='hidden size of model (default: 512)')
parser.add_argument('--dropout',
type=float,
default=0.3,
help='Dropout rate in training (default: 0.3)')
parser.add_argument(
'--no-bidirectional',
dest='bidirectional',
action='store_false',
default=True,
help='Turn off bi-directional RNNs, introduces lookahead convolution')
parser.add_argument('--batch_size',
type=int,
default=32,
help='Batch size in training (default: 32)')
parser.add_argument(
'--num_workers',
type=int,
default=4,
help='Number of workers in dataset loader (default: 4)')
parser.add_argument('--num_gpu',
type=int,
default=1,
help='Number of gpus (default: 1)')
parser.add_argument('--epochs',
type=int,
default=100,
help='Number of max epochs in training (default: 100)')
parser.add_argument('--lr',
type=float,
default=3e-4,
help='Learning rate (default: 3e-4)')
parser.add_argument('--learning-anneal',
default=1.1,
type=float,
help='Annealing learning rate every epoch')
parser.add_argument('--teacher_forcing',
type=float,
default=1.0,
help='Teacher forcing ratio in decoder (default: 1.0)')
parser.add_argument('--max_len',
type=int,
default=80,
help='Maximum characters of sentence (default: 80)')
parser.add_argument('--max-norm',
default=400,
type=int,
help='Norm cutoff to prevent explosion of gradients')
# Audio Config
parser.add_argument('--sample-rate',
default=16000,
type=int,
help='Sampling Rate')
parser.add_argument('--window-size',
default=.02,
type=float,
help='Window size for spectrogram')
parser.add_argument('--window-stride',
default=.01,
type=float,
help='Window stride for spectrogram')
# System
parser.add_argument('--save-folder',
default='models',
help='Location to save epoch models')
parser.add_argument('--model-path',
default='models/las_final.pth',
help='Location to save best validation model')
parser.add_argument(
'--log-path',
default='log/',
help='path to predict log about valid and test dataset')
parser.add_argument('--cuda',
action='store_true',
default=False,
help='disables CUDA training')
parser.add_argument('--seed',
type=int,
default=123456,
help='random seed (default: 123456)')
parser.add_argument('--mode',
type=str,
default='train',
help='Train or Test')
parser.add_argument('--load-model',
action='store_true',
default=False,
help='Load model')
parser.add_argument('--finetune',
dest='finetune',
action='store_true',
default=False,
help='Finetune the model after load model')
args = parser.parse_args()
torch.manual_seed(args.seed)
torch.cuda.manual_seed_all(args.seed)
np.random.seed(args.seed)
random.seed(args.seed)
char2index, index2char = label_loader.load_label_json(args.labels_path)
SOS_token = char2index['<s>']
EOS_token = char2index['</s>']
PAD_token = char2index['_']
device = torch.device('cuda' if args.cuda else 'cpu')
audio_conf = dict(sample_rate=args.sample_rate,
window_size=args.window_size,
window_stride=args.window_stride)
# Batch Size
batch_size = args.batch_size * args.num_gpu
print(">> Train dataset : ", args.train_file)
trainData_list = []
with open(args.train_file, 'r', encoding='utf-8') as f:
trainData_list = json.load(f)
if args.num_gpu != 1:
last_batch = len(trainData_list) % batch_size
if last_batch != 0 and last_batch < args.num_gpu:
trainData_list = trainData_list[:-last_batch]
train_dataset = SpectrogramDataset(audio_conf=audio_conf,
dataset_path=args.dataset_path,
data_list=trainData_list,
char2index=char2index,
sos_id=SOS_token,
eos_id=EOS_token,
normalize=True)
train_sampler = BucketingSampler(train_dataset, batch_size=batch_size)
train_loader = AudioDataLoader(train_dataset,
num_workers=args.num_workers,
batch_sampler=train_sampler)
print(">> Test dataset : ", args.test_file_list)
testLoader_dict = {}
for test_file in args.test_file_list:
testData_list = []
with open(test_file, 'r', encoding='utf-8') as f:
testData_list = json.load(f)
test_dataset = SpectrogramDataset(audio_conf=audio_conf,
dataset_path=args.dataset_path,
data_list=testData_list,
char2index=char2index,
sos_id=SOS_token,
eos_id=EOS_token,
normalize=True)
testLoader_dict[test_file] = AudioDataLoader(
test_dataset, batch_size=1, num_workers=args.num_workers)
input_size = int(math.floor((args.sample_rate * args.window_size) / 2) + 1)
enc = EncoderRNN(input_size,
args.encoder_size,
n_layers=args.encoder_layers,
dropout_p=args.dropout,
bidirectional=args.bidirectional,
rnn_cell=args.rnn_type,
variable_lengths=False)
dec = DecoderRNN(len(char2index),
args.max_len,
args.decoder_size,
args.encoder_size,
SOS_token,
EOS_token,
n_layers=args.decoder_layers,
rnn_cell=args.rnn_type,
dropout_p=args.dropout,
bidirectional_encoder=args.bidirectional)
model = Seq2Seq(enc, dec)
save_folder = args.save_folder
os.makedirs(save_folder, exist_ok=True)
optim_state = None
if args.load_model: # Starting from previous model
print("Loading checkpoint model %s" % args.model_path)
state = torch.load(args.model_path)
model.load_state_dict(state['model'])
print('Model loaded')
if not args.finetune: # Just load model
optim_state = state['optimizer']
model = model.to(device)
optimizer = optim.Adam(model.parameters(), lr=args.lr, weight_decay=1e-5)
if optim_state is not None:
optimizer.load_state_dict(optim_state)
criterion = nn.CrossEntropyLoss(reduction='mean').to(device)
print(model)
print("Number of parameters: %d" % Seq2Seq.get_param_size(model))
train_model = nn.DataParallel(model)
if args.mode != "train":
for test_file in args.test_file_list:
test_loader = testLoader_dict[test_file]
test_loss, test_cer, transcripts_list = evaluate(model,
test_loader,
criterion,
device,
save_output=True)
for idx, line in enumerate(transcripts_list):
# print(line)
hyp, ref = line.split('\t')
print("({:3d}/{:3d}) [REF]: {}".format(idx + 1,
len(transcripts_list),
ref))
print("({:3d}/{:3d}) [HYP]: {}".format(idx + 1,
len(transcripts_list),
hyp))
print()
print("Test {} CER : {}".format(test_file, test_cer))
else:
best_cer = 1e10
begin_epoch = 0
# start_time = time.time()
start_time = datetime.datetime.now()
for epoch in range(begin_epoch, args.epochs):
train_loss, train_cer = train(train_model, train_loader, criterion,
optimizer, device, epoch,
train_sampler, args.max_norm,
args.teacher_forcing)
# end_time = time.time()
# elapsed_time = end_time - start_time
elapsed_time = datetime.datetime.now() - start_time
train_log = 'Train({name}) Summary Epoch: [{0}]\tAverage Loss {loss:.3f}\tAverage CER {cer:.3f}\tTime {time:}'.format(
epoch + 1,
name='train',
loss=train_loss,
cer=train_cer,
time=elapsed_time)
print(train_log)
cer_list = []
for test_file in args.test_file_list:
test_loader = testLoader_dict[test_file]
test_loss, test_cer, _ = evaluate(model,
test_loader,
criterion,
device,
save_output=False)
test_log = 'Test({name}) Summary Epoch: [{0}]\tAverage Loss {loss:.3f}\tAverage CER {cer:.3f}\t'.format(
epoch + 1, name=test_file, loss=test_loss, cer=test_cer)
print(test_log)
cer_list.append(test_cer)
if best_cer > cer_list[0]:
print("Found better validated model, saving to %s" %
args.model_path)
state = {
'model': model.state_dict(),
'optimizer': optimizer.state_dict()
}
torch.save(state, args.model_path)
best_cer = cer_list[0]
print("Shuffling batches...")
train_sampler.shuffle(epoch)
for g in optimizer.param_groups:
g['lr'] = g['lr'] / args.learning_anneal
print('Learning rate annealed to: {lr:.6f}'.format(lr=g['lr']))
def main():
args = parser.parse_args()
save_folder = args.save_folder
loss_results, cer_results, wer_results = torch.Tensor(
args.epochs), torch.Tensor(args.epochs), torch.Tensor(args.epochs)
best_wer = None
if args.visdom:
from visdom import Visdom
viz = Visdom()
opts = [
dict(title=args.visdom_id + ' Loss', ylabel='Loss',
xlabel='Epoch'),
dict(title=args.visdom_id + ' WER', ylabel='WER', xlabel='Epoch'),
dict(title=args.visdom_id + ' CER', ylabel='CER', xlabel='Epoch')
]
viz_windows = [None, None, None]
epochs = torch.arange(1, args.epochs + 1)
if args.tensorboard:
from logger import TensorBoardLogger
try:
os.makedirs(args.log_dir)
except OSError as e:
if e.errno == errno.EEXIST:
print('Directory already exists.')
for file in os.listdir(args.log_dir):
file_path = os.path.join(args.log_dir, file)
try:
if os.path.isfile(file_path):
os.unlink(file_path)
except Exception as e:
raise
else:
raise
logger = TensorBoardLogger(args.log_dir)
try:
os.makedirs(save_folder)
except OSError as e:
if e.errno == errno.EEXIST:
print('Directory already exists.')
else:
raise
criterion = CTCLoss()
with open(args.labels_path) as label_file:
# labels = str(''.join(json.load(label_file)))
labels = json.load(label_file)
audio_conf = dict(sample_rate=args.sample_rate,
window_size=args.window_size,
window_stride=args.window_stride,
window=args.window,
noise_dir=args.noise_dir,
noise_prob=args.noise_prob,
noise_levels=(args.noise_min, args.noise_max))
train_dataset = SpectrogramDataset(audio_conf=audio_conf,
manifest_filepath=args.train_manifest,
labels=labels,
normalize=True,
augment=args.augment)
test_dataset = SpectrogramDataset(audio_conf=audio_conf,
manifest_filepath=args.val_manifest,
labels=labels,
normalize=True,
augment=False)
train_loader = AudioDataLoader(train_dataset,
batch_size=args.batch_size,
num_workers=args.num_workers)
test_loader = AudioDataLoader(test_dataset,
batch_size=args.batch_size,
num_workers=args.num_workers)
rnn_type = args.rnn_type.lower()
assert rnn_type in supported_rnns, "rnn_type should be either lstm, rnn or gru"
model = DeepSpeech(rnn_hidden_size=args.hidden_size,
nb_layers=args.hidden_layers,
labels=labels,
rnn_type=supported_rnns[rnn_type],
audio_conf=audio_conf,
bidirectional=True)
parameters = model.parameters()
optimizer = torch.optim.SGD(parameters,
lr=args.lr,
momentum=args.momentum,
nesterov=True)
# decoder = GreedyDecoder(labels)
decoder = GreedyDecoder(labels,
space_index=labels.index('<space>'),
blank_index=labels.index('_'))
if args.continue_from:
print("Loading checkpoint model %s" % args.continue_from)
package = torch.load(args.continue_from)
model.load_state_dict(package['state_dict'])
optimizer.load_state_dict(package['optim_dict'])
start_epoch = int(package.get(
'epoch', 1)) - 1 # Python index start at 0 for training
start_iter = package.get('iteration', None)
if start_iter is None:
start_epoch += 1 # Assume that we saved a model after an epoch finished, so start at the next epoch.
start_iter = 0
else:
start_iter += 1
avg_loss = int(package.get('avg_loss', 0))
loss_results, cer_results, wer_results = package[
'loss_results'], package['cer_results'], package['wer_results']
if args.visdom and \
package['loss_results'] is not None and start_epoch > 0: # Add previous scores to visdom graph
x_axis = epochs[0:start_epoch]
y_axis = [
loss_results[0:start_epoch], wer_results[0:start_epoch],
cer_results[0:start_epoch]
]
for x in range(len(viz_windows)):
viz_windows[x] = viz.line(
X=x_axis,
Y=y_axis[x],
opts=opts[x],
)
if args.tensorboard and \
package['loss_results'] is not None and start_epoch > 0: # Previous scores to tensorboard logs
for i in range(start_epoch):
info = {
'Avg Train Loss': loss_results[i],
'Avg WER': wer_results[i],
'Avg CER': cer_results[i]
}
for tag, val in info.items():
logger.scalar_summary(tag, val, i + 1)
if not args.no_bucketing:
print("Using bucketing sampler for the following epochs")
train_dataset = SpectrogramDatasetWithLength(
audio_conf=audio_conf,
manifest_filepath=args.train_manifest,
labels=labels,
normalize=True,
augment=args.augment)
sampler = BucketingSampler(train_dataset)
train_loader.sampler = sampler
else:
avg_loss = 0
start_epoch = 0
start_iter = 0
if args.cuda:
model = torch.nn.DataParallel(model).cuda()
print(model)
print("Number of parameters: %d" % DeepSpeech.get_param_size(model))
batch_time = AverageMeter()
data_time = AverageMeter()
losses = AverageMeter()
for epoch in range(start_epoch, args.epochs):
model.train()
end = time.time()
for i, (data) in enumerate(train_loader, start=start_iter):
if i == len(train_loader):
break
inputs, targets, input_percentages, target_sizes = data
# measure data loading time
data_time.update(time.time() - end)
inputs = Variable(inputs, requires_grad=False)
target_sizes = Variable(target_sizes, requires_grad=False)
targets = Variable(targets, requires_grad=False)
if args.cuda:
inputs = inputs.cuda()
out = model(inputs)
out = out.transpose(0, 1) # TxNxH
seq_length = out.size(0)
sizes = Variable(input_percentages.mul_(int(seq_length)).int(),
requires_grad=False)
loss = criterion(out, targets, sizes, target_sizes)
loss = loss / inputs.size(0) # average the loss by minibatch
loss_sum = loss.data.sum()
inf = float("inf")
if loss_sum == inf or loss_sum == -inf:
print("WARNING: received an inf loss, setting loss value to 0")
loss_value = 0
else:
loss_value = loss.data[0]
avg_loss += loss_value
losses.update(loss_value, inputs.size(0))
# compute gradient
optimizer.zero_grad()
loss.backward()
torch.nn.utils.clip_grad_norm(model.parameters(), args.max_norm)
# SGD step
optimizer.step()
if args.cuda:
torch.cuda.synchronize()
# measure elapsed time
batch_time.update(time.time() - end)
end = time.time()
if not args.silent:
print('Epoch: [{0}][{1}/{2}]\t'
'Time {batch_time.val:.3f} ({batch_time.avg:.3f})\t'
'Data {data_time.val:.3f} ({data_time.avg:.3f})\t'
'Loss {loss.val:.4f} ({loss.avg:.4f})\t'.format(
(epoch + 1), (i + 1),
len(train_loader),
batch_time=batch_time,
data_time=data_time,
loss=losses))
if args.checkpoint_per_batch > 0 and i > 0 and (
i + 1) % args.checkpoint_per_batch == 0:
file_path = '%s/deepspeech_checkpoint_epoch_%d_iter_%d.pth.tar' % (
save_folder, epoch + 1, i + 1)
print("Saving checkpoint model to %s" % file_path)
torch.save(
DeepSpeech.serialize(model,
optimizer=optimizer,
epoch=epoch,
iteration=i,
loss_results=loss_results,
wer_results=wer_results,
cer_results=cer_results,
avg_loss=avg_loss), file_path)
del loss
del out
avg_loss /= len(train_loader)
print('Training Summary Epoch: [{0}]\t'
'Average Loss {loss:.3f}\t'.format(epoch + 1, loss=avg_loss))
start_iter = 0 # Reset start iteration for next epoch
total_cer, total_wer = 0, 0
model.eval()
for i, (data) in enumerate(test_loader): # test
inputs, targets, input_percentages, target_sizes = data
inputs = Variable(inputs, volatile=True)
# unflatten targets
split_targets = []
offset = 0
for size in target_sizes:
split_targets.append(targets[offset:offset + size])
offset += size
if args.cuda:
inputs = inputs.cuda()
out = model(inputs)
out = out.transpose(0, 1) # TxNxH
seq_length = out.size(0)
sizes = input_percentages.mul_(int(seq_length)).int()
decoded_output = decoder.decode(out.data, sizes)
target_strings = decoder.process_strings(
decoder.convert_to_strings(split_targets))
wer, cer = 0, 0
for x in range(len(target_strings)):
# wer += decoder.wer(decoded_output[x], target_strings[x]) / float(len(target_strings[x].split()))
# cer += decoder.cer(decoded_output[x], target_strings[x]) / float(len(target_strings[x]))
wer += decoder.wer(
decoded_output[x], target_strings[x]) / float(
len(target_strings[x].replace(' ',
'').split('<space>')))
cer += decoder.cer(decoded_output[x],
target_strings[x]) / float(
len(target_strings[x].split(' ')))
total_cer += cer
total_wer += wer
if args.cuda:
torch.cuda.synchronize()
del out
wer = total_wer / len(test_loader.dataset)
cer = total_cer / len(test_loader.dataset)
wer *= 100
cer *= 100
loss_results[epoch] = avg_loss
wer_results[epoch] = wer
cer_results[epoch] = cer
print('Validation Summary Epoch: [{0}]\t'
'Average WER {wer:.3f}\t'
'Average CER {cer:.3f}\t'.format(epoch + 1, wer=wer, cer=cer))
if args.visdom:
# epoch += 1
x_axis = epochs[0:epoch + 1]
y_axis = [
loss_results[0:epoch + 1], wer_results[0:epoch + 1],
cer_results[0:epoch + 1]
]
for x in range(len(viz_windows)):
if viz_windows[x] is None:
viz_windows[x] = viz.line(
X=x_axis,
Y=y_axis[x],
opts=opts[x],
)
else:
viz.line(
X=x_axis,
Y=y_axis[x],
win=viz_windows[x],
update='replace',
)
if args.tensorboard:
info = {'Avg Train Loss': avg_loss, 'Avg WER': wer, 'Avg CER': cer}
for tag, val in info.items():
logger.scalar_summary(tag, val, epoch + 1)
if args.log_params:
for tag, value in model.named_parameters():
tag = tag.replace('.', '/')
logger.histo_summary(tag, to_np(value), epoch + 1)
logger.histo_summary(tag + '/grad', to_np(value.grad),
epoch + 1)
if args.checkpoint:
file_path = '%s/deepspeech_%d.pth.tar' % (save_folder, epoch + 1)
torch.save(
DeepSpeech.serialize(model,
optimizer=optimizer,
epoch=epoch,
loss_results=loss_results,
wer_results=wer_results,
cer_results=cer_results), file_path)
# anneal lr
optim_state = optimizer.state_dict()
optim_state['param_groups'][0][
'lr'] = optim_state['param_groups'][0]['lr'] / args.learning_anneal
optimizer.load_state_dict(optim_state)
print('Learning rate annealed to: {lr:.6f}'.format(
lr=optim_state['param_groups'][0]['lr']))
if best_wer is None or best_wer > wer:
print("Found better validated model, saving to %s" %
args.model_path)
torch.save(
DeepSpeech.serialize(model,
optimizer=optimizer,
epoch=epoch,
loss_results=loss_results,
wer_results=wer_results,
cer_results=cer_results), args.model_path)
best_wer = wer
avg_loss = 0
if not args.no_bucketing and epoch == 0:
print("Switching to bucketing sampler for following epochs")
train_dataset = SpectrogramDatasetWithLength(
audio_conf=audio_conf,
manifest_filepath=args.train_manifest,
labels=labels,
normalize=True,
augment=args.augment)
sampler = BucketingSampler(train_dataset)
train_loader.sampler = sampler
def main():
global char2index
global index2char
global SOS_token
global EOS_token
global PAD_token
parser = argparse.ArgumentParser(description='LAS')
parser.add_argument('--model-name', type=str, default='LAS')
# Dataset
parser.add_argument('--test-file-list',
nargs='*',
help='data list about test dataset',
default=['data/Youtube/clean'])
parser.add_argument('--labels-path',
default='data/kor_syllable.json',
help='Contains large characters over korean')
parser.add_argument('--dataset-path',
default='data/Youtube/clean',
help='Target dataset path')
# Hyperparameters
parser.add_argument('--rnn-type',
default='lstm',
help='Type of the RNN. rnn|gru|lstm are supported')
parser.add_argument('--encoder_layers',
type=int,
default=3,
help='number of layers of model (default: 3)')
parser.add_argument('--encoder_size',
type=int,
default=512,
help='hidden size of model (default: 512)')
parser.add_argument('--decoder_layers',
type=int,
default=2,
help='number of pyramidal layers (default: 2)')
parser.add_argument('--decoder_size',
type=int,
default=512,
help='hidden size of model (default: 512)')
parser.add_argument(
'--no-bidirectional',
dest='bidirectional',
action='store_false',
default=True,
help='Turn off bi-directional RNNs, introduces lookahead convolution')
parser.add_argument(
'--num_workers',
type=int,
default=4,
help='Number of workers in dataset loader (default: 4)')
parser.add_argument('--num_gpu',
type=int,
default=1,
help='Number of gpus (default: 1)')
parser.add_argument('--learning-anneal',
default=1.1,
type=float,
help='Annealing learning rate every epoch')
parser.add_argument('--max_len',
type=int,
default=80,
help='Maximum characters of sentence (default: 80)')
parser.add_argument('--max-norm',
default=400,
type=int,
help='Norm cutoff to prevent explosion of gradients')
# Audio Config
parser.add_argument('--sample-rate',
default=16000,
type=int,
help='Sampling Rate')
parser.add_argument('--window-size',
default=.02,
type=float,
help='Window size for spectrogram')
parser.add_argument('--window-stride',
default=.01,
type=float,
help='Window stride for spectrogram')
# System
parser.add_argument('--model-path',
default='models/final.pth',
help='Location to save best validation model')
parser.add_argument('--seed',
type=int,
default=123456,
help='random seed (default: 123456)')
args = parser.parse_args()
torch.manual_seed(args.seed)
torch.cuda.manual_seed_all(args.seed)
np.random.seed(args.seed)
random.seed(args.seed)
char2index, index2char = label_loader.load_label_json(args.labels_path)
SOS_token = char2index['<s>']
EOS_token = char2index['</s>']
PAD_token = char2index['_']
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
audio_conf = dict(sample_rate=args.sample_rate,
window_size=args.window_size,
window_stride=args.window_stride)
print(">> Test dataset : ", args.dataset_path)
testData_list = []
for wav_name in sorted(glob(f'{args.dataset_path}/*'),
key=lambda i: int(os.path.basename(i)[:-4])):
wav_dict = {}
wav_dict['wav'] = os.path.basename(wav_name)
wav_dict['text'] = os.path.basename(wav_name)
wav_dict['speaker_id'] = '0'
testData_list.append(wav_dict)
test_dataset = SpectrogramDataset(audio_conf=audio_conf,
dataset_path=args.dataset_path,
data_list=testData_list,
char2index=char2index,
sos_id=SOS_token,
eos_id=EOS_token,
normalize=True)
test_loader = AudioDataLoader(test_dataset,
batch_size=1,
num_workers=args.num_workers)
input_size = int(math.floor((args.sample_rate * args.window_size) / 2) + 1)
enc = EncoderRNN(input_size,
args.encoder_size,
n_layers=args.encoder_layers,
bidirectional=args.bidirectional,
rnn_cell=args.rnn_type,
variable_lengths=False)
dec = DecoderRNN(len(char2index),
args.max_len,
args.decoder_size,
args.encoder_size,
SOS_token,
EOS_token,
n_layers=args.decoder_layers,
rnn_cell=args.rnn_type,
bidirectional_encoder=args.bidirectional)
model = Seq2Seq(enc, dec)
print("Loading checkpoint model %s" % args.model_path)
state = torch.load(args.model_path)
model.load_state_dict(state['model'])
model = model.to(device)
criterion = nn.CrossEntropyLoss(reduction='mean').to(device)
print("Number of parameters: %d" % Seq2Seq.get_param_size(model))
test_loss, test_cer, transcripts_list = evaluate(model,
test_loader,
criterion,
device,
save_output=True)
print(f"{'true':^20} | {'pred':^20}")
for line in transcripts_list:
print(line)
print("Test {} CER : {}".format("test", test_cer))
def main():
os.chdir(os.path.dirname(__file__))
os.chdir('../')
global char2index
global index2char
global SOS_token
global EOS_token
global PAD_token
model_name = 'LAS'
# Dataset
test_file_list = ['data/Youtube_test/youtube_test.json']
labels_path = 'data/kor_syllable.json'
dataset_path = 'data/Youtube_test'
# Hyperparameters
rnn_type = 'lstm'
encoder_layers = 3
encoder_size = 512
decoder_layers = 2
decoder_size = 512
dropout = 0.3
bidirectional = True
num_workers = 4
max_len = 80
# Audio Config
sample_rate = 16000
window_size = .02
window_stride = .01
# System
save_folder = 'models'
model_path = 'models/AIHub_train/LSTM_512x3_512x2_AIHub_train/final.pth'
cuda = True
seed = 123456
torch.manual_seed(seed)
torch.cuda.manual_seed_all(seed)
np.random.seed(seed)
random.seed(seed)
char2index, index2char = label_loader.load_label_json(labels_path)
SOS_token = char2index['<s>']
EOS_token = char2index['</s>']
PAD_token = char2index['_']
device = torch.device('cuda' if cuda else 'cpu')
audio_conf = dict(sample_rate=sample_rate,
window_size=window_size,
window_stride=window_stride)
print(">> Test dataset : ", test_file_list)
testLoader_dict = {}
for test_file in test_file_list:
testData_list = []
with open(test_file, 'r', encoding='utf-8') as f:
testData_list = json.load(f)
test_dataset = SpectrogramDataset(audio_conf=audio_conf,
dataset_path=dataset_path,
data_list=testData_list,
char2index=char2index, sos_id=SOS_token, eos_id=EOS_token,
normalize=True)
testLoader_dict[test_file] = AudioDataLoader(test_dataset, batch_size=1, num_workers=num_workers)
input_size = int(math.floor((sample_rate * window_size) / 2) + 1)
enc = EncoderRNN(input_size, encoder_size, n_layers=encoder_layers,
dropout_p=dropout, bidirectional=bidirectional,
rnn_cell=rnn_type, variable_lengths=False)
dec = DecoderRNN(len(char2index), max_len, decoder_size, encoder_size,
SOS_token, EOS_token,
n_layers=decoder_layers, rnn_cell=rnn_type,
dropout_p=dropout, bidirectional_encoder=bidirectional)
model = Seq2Seq(enc, dec)
os.makedirs(save_folder, exist_ok=True)
criterion = nn.CrossEntropyLoss(reduction='mean').to(device)
print("Loading checkpoint model %s" % model_path)
state = torch.load(model_path)
model.load_state_dict(state['model'])
print('Model loaded')
model = model.to(device)
print(model)
print("Number of parameters: %d" % Seq2Seq.get_param_size(model))
for test_file in test_file_list:
test_loader = testLoader_dict[test_file]
test_loss, test_cer, transcripts_list = evaluate(model, test_loader, criterion, device, save_output=True)
for line in transcripts_list:
print('STT : ' + line.split('\t')[0])
print('정답 : ' + line.split('\t')[1])
print('-'*100)
print("Test {} CER : {}".format(test_file, test_cer))
def wav_to_text():
os.chdir(os.path.dirname(__file__))
os.chdir('../')
global char2index
global index2char
global SOS_token
global EOS_token
global PAD_token
model_name = 'LAS'
# Dataset
target_file_lst = glob.glob('data/youtube/*/chunks/*.pcm')
target_dic = []
for chunk in target_file_lst:
target_dic.append({'wav': chunk, 'text': '1'})
with open('data/youtube/target_file.json', 'w',
encoding='utf-8') as json_file:
json.dump(target_dic, json_file)
target_file_list = ['data/youtube/target_file.json']
labels_path = 'data/kor_syllable.json'
dataset_path = ''
# Hyperparameters
rnn_type = 'lstm'
encoder_layers = 3
encoder_size = 512
decoder_layers = 2
decoder_size = 512
dropout = 0.3
bidirectional = True
num_workers = 4
max_len = 80
# Audio Config
sample_rate = 16000
window_size = .02
window_stride = .01
# System
save_folder = 'models'
model_path = 'models/news_finetune/final.pth'
cuda = True
seed = 123456
torch.manual_seed(seed)
torch.cuda.manual_seed_all(seed)
np.random.seed(seed)
random.seed(seed)
char2index, index2char = label_loader.load_label_json(labels_path)
SOS_token = char2index['<s>']
EOS_token = char2index['</s>']
PAD_token = char2index['_']
device = torch.device('cuda' if cuda else 'cpu')
audio_conf = dict(sample_rate=sample_rate,
window_size=window_size,
window_stride=window_stride)
print(">> Target dataset : ", target_file_list)
targetLoader_dict = {}
for target_file in target_file_list:
targetData_list = []
with open(target_file, 'r', encoding='utf-8') as f:
targetData_list = json.load(f)
target_dataset = SpectrogramDataset(audio_conf=audio_conf,
dataset_path=dataset_path,
data_list=targetData_list,
char2index=char2index,
sos_id=SOS_token,
eos_id=EOS_token,
normalize=True)
targetLoader_dict[target_file] = AudioDataLoader(
target_dataset, batch_size=1, num_workers=num_workers)
input_size = int(math.floor((sample_rate * window_size) / 2) + 1)
enc = EncoderRNN(input_size,
encoder_size,
n_layers=encoder_layers,
dropout_p=dropout,
bidirectional=bidirectional,
rnn_cell=rnn_type,
variable_lengths=False)
dec = DecoderRNN(len(char2index),
max_len,
decoder_size,
encoder_size,
SOS_token,
EOS_token,
n_layers=decoder_layers,
rnn_cell=rnn_type,
dropout_p=dropout,
bidirectional_encoder=bidirectional)
model = Seq2Seq(enc, dec)
os.makedirs(save_folder, exist_ok=True)
criterion = nn.CrossEntropyLoss(reduction='mean').to(device)
print("Loading checkpoint model %s" % model_path)
state = torch.load(model_path)
model.load_state_dict(state['model'])
print('Model loaded')
model = model.to(device)
print(model)
print("Number of parameters: %d" % Seq2Seq.get_param_size(model))
result = []
for target_file in target_file_list:
target_loader = targetLoader_dict[target_file]
transcripts_list = evaluate(model,
target_loader,
criterion,
device,
save_output=True)
result.append(' '.join(
[line.split('\t')[0] for line in transcripts_list]))
lst = os.listdir('data/youtube')
for x in lst:
if x != 'target_file.json':
shutil.rmtree('data/youtube/' + x)
return result