def get_prediction():
toolkits.initialize_GPU(args)
import model
import generator
params = {
'dim': (257, args.spec_len, 1),
'mp_pooler': toolkits.set_mp(processes=12),
'nfft': 512,
'spec_len': args.spec_len,
'win_length': 400,
'hop_length': 160,
'n_classes': 2,
'sampling_rate': 16000,
'batch_size': args.batch_size,
'shuffle': False,
'normalize': True,
}
network = model.stutter_model(input_dim=params['dim'],
num_class=params['n_classes'],
mode='train',
args=args)
personal_folder = '/home/amh/Projects/Stutter/model/Filler/person_{}/'.format(
args.person)
personal_files = os.listdir(personal_folder)[-1]
best_model = os.path.join(personal_folder, personal_files)
print(best_model)
network.load_weights(best_model)
vallist, vallb = toolkits.get_datalist(
args,
path='../meta/Stutter_Leave_One_Fillers/validation_labels_{}.txt'.
format(args.person))
vld_gen = generator.DataGenerator(vallist.flatten(), vallb.flatten(),
**params)
step = 0
preds = []
for i in range((len(vallist) // args.batch_size) + 1):
x_data, y_data = vld_gen.__getitem__(index=step + i)
preds.extend(np.argmax(network.predict(x_data), axis=1))
from sklearn.metrics import accuracy_score
print(accuracy_score(preds, vallb))
def main():
# gpu configuration
toolkits.initialize_GPU(args)
import model
import generator
import keras
# ==================================
# Get Train/Val.
# ==================================
trnlist, trnlb = toolkits.get_voxceleb2_datalist(
args, path='../meta/vox2_train_wav.txt')
vallist, vallb = toolkits.get_voxceleb2_datalist(
args, path='../meta/vox2_val_wav.txt')
# construct the data generator.
params = {
'dim': (257, 250, 1),
'mp_pooler': toolkits.set_mp(processes=args.multiprocess),
'nfft': 512,
'spec_len': 250,
'win_length': 400,
'hop_length': 160,
'n_classes': 5994,
'sampling_rate': 16000,
'batch_size': args.batch_size,
'shuffle': True,
'normalize': True,
}
# Datasets
partition = {'train': trnlist.flatten(), 'val': vallist.flatten()}
labels = {'train': trnlb.flatten(), 'val': vallb.flatten()}
# Generators
trn_gen = generator.DataGenerator(partition['train'], labels['train'],
**params)
network = model.vggvox_resnet2d_icassp(input_dim=params['dim'],
num_class=params['n_classes'],
mode='train',
args=args)
# ==> load pre-trained model ???
mgpu = len(keras.backend.tensorflow_backend._get_available_gpus())
if args.resume:
if os.path.isfile(args.resume):
if mgpu == 1: network.load_weights(os.path.join(args.resume))
else:
network.layers[mgpu + 1].load_weights(os.path.join(
args.resume))
print('==> successfully loading model {}.'.format(args.resume))
else:
print("==> no checkpoint found at '{}'".format(args.resume))
print(network.summary())
print('==> gpu {} is, training {} images, classes: 0-{} '
'loss: {}, aggregation: {}, ohemlevel: {}'.format(
args.gpu, len(partition['train']), np.max(labels['train']),
args.loss, args.aggregation_mode, args.ohem_level))
model_path, log_path = set_path(args)
normal_lr = keras.callbacks.LearningRateScheduler(step_decay)
tbcallbacks = keras.callbacks.TensorBoard(log_dir=log_path,
histogram_freq=0,
write_graph=True,
write_images=False,
update_freq=args.batch_size * 16)
callbacks = [
keras.callbacks.ModelCheckpoint(os.path.join(
model_path, 'weights-{epoch:02d}-{acc:.3f}.h5'),
monitor='loss',
mode='min',
save_best_only=True), normal_lr,
tbcallbacks
]
if args.ohem_level > 1: # online hard negative mining will be used
candidate_steps = int(len(partition['train']) // args.batch_size)
iters_per_epoch = int(
len(partition['train']) // (args.ohem_level * args.batch_size))
ohem_generator = generator.OHEM_generator(
network, trn_gen, candidate_steps, args.ohem_level,
args.batch_size, params['dim'], params['n_classes'])
A = ohem_generator.next(
) # for some reason, I need to warm up the generator
network.fit_generator(generator.OHEM_generator(
network, trn_gen, iters_per_epoch, args.ohem_level,
args.batch_size, params['dim'], params['n_classes']),
steps_per_epoch=iters_per_epoch,
epochs=args.epochs,
max_queue_size=10,
callbacks=callbacks,
use_multiprocessing=False,
workers=1,
verbose=1)
else:
network.fit_generator(trn_gen,
steps_per_epoch=int(
len(partition['train']) // args.batch_size),
epochs=args.epochs,
max_queue_size=10,
callbacks=callbacks,
use_multiprocessing=False,
workers=1,
verbose=1)
def main():
# gpu configuration
toolkits.initialize_GPU(args)
import model
# ==================================
# Get Train/Val.
# ==================================
vallist, vallb = toolkits.get_hike_datalist(
meta_paths=args.test_meta_data_path,
data_paths=args.test_data_path,
mode=model_config['loss'])
_, valscore = toolkits.get_hike_datalist(
meta_paths=args.test_meta_data_path,
data_paths=args.test_data_path,
mode='mse')
# ==================================
# Get Model
# ==================================
# construct the data generator.
num_class = len(score_rule)
input_length = int(args.audio_length * 25)
params = {
'dim': (513, None, 1),
'mp_pooler': toolkits.set_mp(processes=args.multiprocess),
'nfft': 1024,
'spec_len': input_length,
'win_length': 1024,
'hop_length': 640,
'n_classes': num_class,
'sampling_rate': 16000,
'normalize': True,
}
network_eval = model.vggvox_resnet2d_icassp(input_dim=params['dim'],
num_class=params['n_classes'],
mode='eval',
args=model_config)
# ==> load pre-trained model ???
if args.resume:
# ==> get real_model from arguments input,
# load the model if the imag_model == real_model.
if os.path.isfile(args.resume):
network_eval.load_weights(os.path.join(args.resume),
by_name=True,
skip_mismatch=True)
print('==> successfully loading model {}.'.format(args.resume))
else:
raise IOError("==> no checkpoint found at '{}'".format(
args.resume))
else:
raise IOError('==> please type in the model to load')
print('==> start testing.')
v = []
for ID in vallist:
val_data = ut.load_data(ID, params['win_length'],
params['sampling_rate'], params['hop_length'],
params['nfft'], params['spec_len'], 'test',
args.data_format)
info = network_eval.predict(np.expand_dims(val_data, (0, -1)))
v += info.tolist()
v = np.array(v)
print('val data shape {}'.format(v.shape))
if model_config['loss'] == 'mse':
v = v.T[0] * 10 + 5
vallb = vallb * 10 + 5
metric = np.square(np.subtract(v, vallb)).mean()
print('mse: ', metric)
v_test = np.vstack([v, vallb]).astype('float').T
df = np.hstack([vallist.reshape(-1, 1), v_test])
df = pd.DataFrame(data=df,
columns=['content', 'score_predict', 'score_true'])
else:
valscore = valscore * 10 + 5
v_predict = ((v < 0.5) * 1)[:, 0]
metric = sum(v_predict == vallb) / len(vallb)
print('confusion matrix: ', confusion_matrix(vallb, v_predict))
print('accuracy ', metric)
v_test = np.hstack([v,
vallb.reshape(-1, 1),
valscore.reshape(-1, 1)]).astype('float')
df = np.hstack([vallist.reshape(-1, 1), v_test])
df = pd.DataFrame(data=df,
columns=[
'content', 'prob_0', 'prob_1', 'true_label',
'score_true'
])
date = datetime.datetime.now().strftime("%Y-%m-%d-%H-%M")
df.to_csv(
os.path.join(args.save_dir,
'{}_{}_{}.csv'.format(date, model_config['loss'],
metric)))
def main():
# gpu configuration
toolkits.initialize_GPU(args)
import model
import generator
# ==================================
# Get Train/Val.
# ==================================
trnlist, trnlb, l2i = toolkits.load_from_kaldi_dir(args,
"train",
min_len=300)
vallist, vallb, _ = toolkits.load_from_kaldi_dir(args,
"val",
min_len=300,
label2idx=l2i)
if args.cmvn:
cmvn_stats = kaldiio.load_mat(args.cmvn)
mean_stats = cmvn_stats[0, :-1]
count = cmvn_stats[0, -1]
offset = np.expand_dims(mean_stats, 0) / count
print("offset", offset)
CMVN = offset
else:
CMVN = None
if args.post_cmvn:
cmvn_stats = kaldiio.load_mat(args.post_cmvn)
mean_stats = cmvn_stats[0, :-1]
count = cmvn_stats[0, -1]
offset = np.expand_dims(mean_stats, 0) / count
print("offset", offset)
POSTCMVN = offset
else:
POSTCMVN = None
# construct the data generator.
params = {
'dim': (args.dim, 300, 1),
'mp_pooler': toolkits.set_mp(processes=args.multiprocess),
'nfft': 512,
'spec_len': 300,
'win_length': 400,
'hop_length': 160,
'n_classes': 8,
'sampling_rate': 16000,
'tandem': args.tandem,
'batch_size': args.batch_size,
'shuffle': True,
'normalize': False,
'cmvn': CMVN,
'postcmvn': POSTCMVN
}
# Datasets
partition = {'train': trnlist, 'val': vallist}
labels = {'train': trnlb.flatten(), 'val': vallb.flatten()}
# Generators
trn_gen = generator.DataGenerator(partition['train'], labels['train'],
**params)
val_gen = generator.DataGenerator(partition['val'], labels['val'],
**params)
network = model.vggvox_resnet2d_icassp(input_dim=params['dim'],
num_class=params['n_classes'],
mode='train',
args=args)
# ==> load pre-trained model ???
mgpu = len(keras.backend.tensorflow_backend._get_available_gpus())
if args.resume:
print("Attempting to load", args.resume)
if args.resume:
if os.path.isfile(args.resume):
if mgpu == 1:
# by_name=True, skip_mismatch=True
# https://github.com/WeidiXie/VGG-Speaker-Recognition/issues/46
network.load_weights(os.path.join(args.resume),
by_name=True,
skip_mismatch=True)
else:
network.layers[mgpu + 1].load_weights(
os.path.join(args.resume))
print('==> successfully loading model {}.'.format(args.resume))
else:
print("==> no checkpoint found at '{}'".format(args.resume))
print(network.summary())
print('==> gpu {} is, training {} images, classes: 0-{} '
'loss: {}, aggregation: {}, ohemlevel: {}'.format(
args.gpu, len(partition['train']), np.max(labels['train']),
args.loss, args.aggregation_mode, args.ohem_level))
model_path, log_path = set_path(args)
with open(os.path.join(model_path, 'label2idx'), 'w') as f:
for key in l2i.keys():
f.write(key + ' ' + str(l2i[key]) + '\n')
normal_lr = keras.callbacks.LearningRateScheduler(step_decay)
tbcallbacks = keras.callbacks.TensorBoard(log_dir=log_path,
histogram_freq=0,
write_graph=True,
write_images=False,
update_freq=args.batch_size * 16)
callbacks = [
keras.callbacks.ModelCheckpoint(os.path.join(
model_path, 'weights-{epoch:02d}-{val_loss:.3f}.h5'),
monitor='val_loss',
mode='min',
save_best_only=True), normal_lr,
tbcallbacks
]
if args.ohem_level > 1: # online hard negative mining will be used
candidate_steps = int(len(partition['train']) // args.batch_size)
iters_per_epoch = int(
len(partition['train']) // (args.ohem_level * args.batch_size))
ohem_generator = generator.OHEM_generator(
network, trn_gen, candidate_steps, args.ohem_level,
args.batch_size, params['dim'], params['n_classes'])
A = ohem_generator.next(
) # for some reason, I need to warm up the generator
network.fit_generator(generator.OHEM_generator(
network, trn_gen, iters_per_epoch, args.ohem_level,
args.batch_size, params['dim'], params['n_classes']),
steps_per_epoch=iters_per_epoch,
epochs=args.epochs,
max_queue_size=10,
callbacks=callbacks,
use_multiprocessing=False,
workers=1,
verbose=1)
else:
network.fit_generator(trn_gen,
validation_data=val_gen,
steps_per_epoch=int(
len(partition['train']) // args.batch_size),
epochs=args.epochs,
max_queue_size=10,
callbacks=callbacks,
use_multiprocessing=True,
workers=12,
verbose=1)
def main():
# gpu configuration
toolkits.initialize_GPU(args)
import model
import generator
# ==================================
# Get Train/Val.
# ==================================
trnlist, trnlb = toolkits.get_hike_datalist(
meta_paths=args.train_meta_data_path,
data_paths=args.train_data_path,
mode=model_config['loss'])
vallist, vallb = toolkits.get_hike_datalist(
meta_paths=args.val_meta_data_path,
data_paths=args.val_data_path,
mode=model_config['loss'])
input_length = int(args.audio_length * 25)
num_class = len(score_rule)
# construct the data generator.
params = {
'dim': (513, input_length, 1),
'mp_pooler': toolkits.set_mp(processes=args.multiprocess),
'nfft': 1024,
'spec_len': input_length,
'win_length': 1024,
'hop_length': 640,
'n_classes': num_class,
'sampling_rate': 16000,
'batch_size': model_config['batch_size'],
'shuffle': True,
'normalize': True,
'loss': model_config['loss'],
'data_format': args.data_format
}
# Datasets
partition = {'train': trnlist.flatten(), 'val': vallist.flatten()}
labels = {'train': trnlb.flatten(), 'val': vallb.flatten()}
# Generators
wandb.init(project='vgg_speaker')
trn_gen = generator.DataGenerator(partition['train'], labels['train'],
**params)
val_gen = generator.DataGenerator(partition['val'], labels['val'],
**params)
network = model.vggvox_resnet2d_icassp(input_dim=params['dim'],
num_class=params['n_classes'],
mode='train',
args=model_config)
# # val data
# val_data = [params['mp_pooler'].apply_async(ut.load_data,
# args=(ID, params['win_length'], params['sampling_rate'], params['hop_length'],
# params['nfft'], params['spec_len'], 'train', args.data_format)) for ID in partition['val']]
# val_data = np.expand_dims(np.array([p.get() for p in val_data]), -1)
# ==> load pre-trained model ???
print(keras.backend.tensorflow_backend._get_available_gpus())
if args.resume:
print("Attempting to load", args.resume)
if args.resume:
if os.path.isfile(args.resume):
network.load_weights(os.path.join(args.resume),
by_name=True,
skip_mismatch=True)
print('==> successfully loading model {}.'.format(args.resume))
else:
raise ValueError("==> no checkpoint found at '{}'".format(
args.resume))
print(network.summary())
print('==> gpu {} is, training {} images, classes: 0-{} '
'loss: {}, aggregation: {}, ohemlevel: {}'.format(
args.gpu, len(partition['train']), np.max(labels['train']),
model_config['loss'], model_config['aggregation_mode'],
model_config['ohem_level']))
model_path, log_path = set_path(args, model_config)
normal_lr = keras.callbacks.LearningRateScheduler(step_decay)
# tbcallbacks = keras.callbacks.TensorBoard(log_dir=log_path, histogram_freq=0, write_graph=True, write_images=False,
# update_freq=model_config['batch_size'] * 16)
callbacks = [
keras.callbacks.ModelCheckpoint(
os.path.join(model_path, 'weights-{epoch:02d}-{loss:.3f}.h5'),
monitor='loss',
mode='min',
save_best_only=True,
period=20,
), normal_lr,
WandbCallback()
]
if model_config[
'ohem_level'] > 1: # online hard negative mining will be used
candidate_steps = int(
len(partition['train']) // model_config['batch_size'])
iters_per_epoch = int(
len(partition['train']) //
(model_config['ohem_level'] * model_config['batch_size']))
ohem_generator = generator.OHEM_generator(
network, trn_gen, candidate_steps, model_config['ohem_level'],
model_config['batch_size'], params['dim'], params['n_classes'])
A = ohem_generator.next(
) # for some reason, I need to warm up the generator
network.fit_generator(generator.OHEM_generator(
network, trn_gen, iters_per_epoch, model_config['ohem_level'],
model_config['batch_size'], params['dim'], params['n_classes']),
steps_per_epoch=iters_per_epoch,
epochs=model_config['epochs'],
max_queue_size=10,
callbacks=callbacks,
use_multiprocessing=False,
workers=1,
verbose=1)
else:
if model_config['loss'] != 'mse':
network.fit_generator(trn_gen,
steps_per_epoch=int(
len(partition['train']) //
model_config['batch_size']),
epochs=model_config['epochs'],
max_queue_size=10,
validation_data=val_gen,
validation_freq=1,
callbacks=callbacks,
use_multiprocessing=False,
workers=1,
verbose=1)
else:
network.fit_generator(trn_gen,
steps_per_epoch=int(
len(partition['train']) //
model_config['batch_size']),
epochs=model_config['epochs'],
max_queue_size=10,
validation_data=val_gen,
validation_freq=1,
callbacks=callbacks,
use_multiprocessing=False,
workers=1,
verbose=1)
def main():
# gpu configuration
toolkits.initialize_GPU(args)
import model
import generator
# ==================================
# Get Train/Val.
# ==================================
feats_path = os.path.join(args.kaldi_data_dir, 'feats.scp')
utt2spk_path = os.path.join(args.kaldi_data_dir, 'utt2spk')
assert os.path.exists(feats_path), 'Path `{}` does not exists.'.format(feats_path)
assert os.path.exists(utt2spk_path), 'Path `{}` does not exists.'.format(utt2spk_path)
utt2ark = {}
with open(feats_path) as f:
for line in f:
key, ark = line.split()
if args.use_clean_only:
if not is_clean(key):
continue
ark, position = ark.split(':')
utt2ark[key] = (key, ark, int(position))
label2count, utt2label, label2int, label2utts = {}, {}, {}, {}
with open(utt2spk_path) as f:
for line in f:
utt, label = line.split()
if args.use_clean_only:
if not is_clean(utt):
continue
if label not in label2int:
label2int[label] = len(label2int)
label = label2int[label]
utt2label[utt] = label
if label not in label2count:
label2count[label] = 0
label2count[label] += 1
if label not in label2utts:
label2utts[label] = []
label2utts[label].append(utt2ark[utt])
# balancing classes
trnlist, vallist, trnlb, vallb = [], [], [], []
max_utts = max(label2count.values())
for label in label2utts:
# print('Balancing', label)
validation_thr = label2count[label] * args.validation_ratio
random.shuffle(label2utts[label])
utts_array = np.array(label2utts[label])
random_indexes = np.random.randint(low=0, high=label2count[label] - 1, size=max_utts)
trn_indexes = random_indexes[random_indexes > validation_thr]
val_indexes = random_indexes[random_indexes <= validation_thr]
# print(np.max(trn_indexes), np.min(trn_indexes), np.max(val_indexes), np.min(val_indexes))
trnlist.extend([(x[0], x[1], int(x[2])) for x in utts_array[trn_indexes]])
trnlb.extend([label for x in range(len(trnlist))])
# print(trnlist[:10], trnlb[:10])
# 1/0
vallist.extend([(x[0], x[1], int(x[2])) for x in utts_array[val_indexes]])
vallb.extend([label for x in range(len(vallist))])
# print(all_list[:10])
# print(label2int)
# print(label2count)
# 1/0
# label2val_count, trnlist, vallist, trnlb, vallb = {}, [], [], [], []
# for utt in all_list:
# label = utt2label[utt[0]]
# if label not in label2val_count:
# label2val_count[label] = 0
# if label2val_count[label] <= label2count[label] * args.validation_ratio:
# # use for validation
# vallist.append(utt)
# vallb.append(label)
# label2val_count[label] += 1
# else:
# # use for training
# trnlist.append(utt)
# trnlb.append(label)
# trnlb = keras.utils.to_categorical(trnlb)
# vallb = keras.utils.to_categorical(vallb)
# construct the data generator.
params = {
'dim': (args.num_dim, 250, 1),
'mp_pooler': toolkits.set_mp(processes=4 * len(args.gpu.split(',')) + 1),
'nfft': 512,
'spec_len': 250,
'win_length': 400,
'hop_length': 160,
'n_classes': len(label2count),
'sampling_rate': 16000,
'batch_size': args.batch_size,
'shuffle': True,
'normalize': True,
'use_clean_only': args.use_clean_only
}
# Datasets
partition = {'train': trnlist, 'val': vallist}
labels = {'train': np.array(trnlb), 'val': np.array(vallb)}
# Generators
trn_gen = generator.DataGenerator(partition['train'], labels['train'], **params)
val_gen = generator.DataGenerator(partition['val'], labels['val'], **params)
network = model.vggvox_resnet2d_icassp(input_dim=params['dim'],
num_class=params['n_classes'],
mode='train', args=args)
# ==> load pre-trained model ???
mgpu = len(keras.backend.tensorflow_backend._get_available_gpus())
if args.resume:
if os.path.isfile(args.resume):
if mgpu == 1: network.load_weights(os.path.join(args.resume))
else: network.layers[mgpu + 1].load_weights(os.path.join(args.resume))
print('==> successfully loading model {}.'.format(args.resume))
else:
print("==> no checkpoint found at '{}'".format(args.resume))
print(network.summary())
print('==> gpu {} is, training {} features, validating {} features, classes: 0-{} '
'loss: {}, aggregation: {}, ohemlevel: {}'.format(args.gpu, len(partition['train']),
len(partition['val']), np.max(labels['train']),
args.loss, args.aggregation_mode, args.ohem_level))
model_path, log_path = set_path(args)
normal_lr = keras.callbacks.LearningRateScheduler(step_decay)
tbcallbacks = keras.callbacks.TensorBoard(log_dir=log_path, histogram_freq=0, write_graph=True, write_images=False,
update_freq=args.batch_size * 16)
callbacks = [keras.callbacks.ModelCheckpoint(os.path.join(model_path, 'weights-{epoch:02d}-{acc:.3f}.h5'),
monitor='loss',
mode='min',
save_best_only=True),
normal_lr, tbcallbacks]
if args.ohem_level > 1: # online hard negative mining will be used
candidate_steps = int(len(partition['train']) // args.batch_size)
iters_per_epoch = int(len(partition['train']) // (args.ohem_level*args.batch_size))
ohem_generator = generator.OHEM_generator(network,
trn_gen,
candidate_steps,
args.ohem_level,
args.batch_size,
params['dim'],
params['n_classes']
)
A = ohem_generator.next() # for some reason, I need to warm up the generator
network.fit_generator(generator.OHEM_generator(network, trn_gen, iters_per_epoch,
args.ohem_level, args.batch_size,
params['dim'], params['n_classes']),
steps_per_epoch=iters_per_epoch,
epochs=args.epochs,
max_queue_size=10,
callbacks=callbacks,
use_multiprocessing=False,
workers=1,
verbose=1,
validation_data=val_gen,
validation_steps=int(len(vallist) // args.batch_size))
else:
network.fit_generator(trn_gen,
steps_per_epoch=int(len(partition['train'])//args.batch_size),
epochs=args.epochs,
max_queue_size=10,
callbacks=callbacks,
use_multiprocessing=False,
workers=1,
verbose=1,
validation_data=val_gen,
validation_steps=int(len(vallist) // args.batch_size))
def main():
# gpu configuration
toolkits.initialize_GPU(args)
import model
import generator
# ==================================
# Get Train/Val.
# ==================================
trnlist, trnlb = toolkits.get_voxceleb2_datalist(
args, path='../meta/voxlb2_train.txt')
vallist, vallb = toolkits.get_voxceleb2_datalist(
args, path='../meta/voxlb2_val.txt')
# construct the data generator.
params = {
'dim': (257, 250, 1),
'mp_pooler': toolkits.set_mp(processes=args.multiprocess),
'nfft': 512,
'spec_len': 250,
'win_length': 400,
'hop_length': 160,
'n_classes': 5994,
'sampling_rate': 16000,
'batch_size': args.batch_size,
'shuffle': True,
'normalize': True,
}
# Datasets
#The Flatten layer is a utility layer that flattens an input of shape n * c * h * w to a simple vector output of shape n * (c*h*w)
partition = {'train': trnlist.flatten(), 'val': vallist.flatten()}
# print("partition is: ",partition)
labels = {'train': trnlb.flatten(), 'val': vallb.flatten()}
# Generators
#make data
trn_gen = generator.DataGenerator(partition['train'], labels['train'],
**params)
# create model depend on args
network = model.vggvox_resnet2d_icassp(input_dim=params['dim'],
num_class=params['n_classes'],
mode='train',
args=args)
# ==> load pre-trained model ???
mgpu = len(keras.backend.tensorflow_backend._get_available_gpus())
if args.resume:
if os.path.isfile(args.resume):
if mgpu == 1: network.load_weights(os.path.join(args.resume))
else:
network.layers[mgpu + 1].load_weights(os.path.join(
args.resume))
print('==> successfully loading model {}.'.format(args.resume))
else:
print("==> no checkpoint found at '{}'".format(args.resume))
print(network.summary())
print('==> gpu {} is, training {} images, classes: 0-{} '
'loss: {}, aggregation: {}, ohemlevel: {}'.format(
args.gpu, len(partition['train']), np.max(labels['train']),
args.loss, args.aggregation_mode, args.ohem_level))
model_path, log_path = set_path(args)
normal_lr = keras.callbacks.LearningRateScheduler(step_decay)
# tbcallbacks = keras.callbacks.TensorBoard(log_dir=log_path, histogram_freq=0, write_graph=True, write_images=False,
# update_freq=args.batch_size * 16)
'''
Keras callbacks return information from a training algorithm while training is taking place. ...
A callback is a set of functions to be applied at given stages of the training procedure.
You can use callbacks to get a view on internal states and statistics of the model during trainin
'''
# callbacks = [keras.callbacks.ModelCheckpoint(os.path.join(model_path, 'weights-{epoch:02d}-{acc:.3f}.h5'),
# monitor='loss',
# mode='min',
# save_best_only=True),
# normal_lr, tbcallbacks]
if args.ohem_level > 1: # online hard negative mining will be used
candidate_steps = int(len(partition['train']) // args.batch_size)
iters_per_epoch = int(
len(partition['train']) // (args.ohem_level * args.batch_size))
ohem_generator = generator.OHEM_generator(
network, trn_gen, candidate_steps, args.ohem_level,
args.batch_size, params['dim'], params['n_classes'])
A = ohem_generator.next(
) # for some reason, I need to warm up the generator
network.fit_generator(generator.OHEM_generator(
network, trn_gen, iters_per_epoch, args.ohem_level,
args.batch_size, params['dim'], params['n_classes']),
steps_per_epoch=iters_per_epoch,
epochs=args.epochs,
max_queue_size=10,
callbacks=callbacks,
use_multiprocessing=False,
workers=1,
verbose=1)
else:
print("steps_per_epoch=", int(len(partition['train'])), " ",
args.batch_size)
print(trn_gen)
print(network)
print("epochs=", args.epochs, "--------")
print("***************", args.batch_size)
network.fit_generator(
trn_gen,
steps_per_epoch=2, #int(len(partition['train'])//args.batch_size),
epochs=args.epochs,
max_queue_size=2,
# callbacks=callbacks,
use_multiprocessing=True,
workers=1,
verbose=1) #should change to one?
print("end!")