def train(self):
embedded = self.creat_model()
lr = tf.placeholder(dtype=tf.float32, name="learning_rate") # learning rate
global_step = tf.Variable(0, name='global_step', trainable=False)
w = tf.get_variable("w", initializer=np.array([10], dtype=np.float32))
b = tf.get_variable("b", initializer=np.array([-5], dtype=np.float32))
sim_matrix = similarity(embedded, w, b)
loss = loss_cal(sim_matrix, type=config.loss)
trainable_vars = tf.trainable_variables() # get variable list
optimizer = optim(lr) # get optimizer (type is determined by configuration)
grads, vars = zip(*optimizer.compute_gradients(loss)) # compute gradients of variables with respect to loss
grads_clip, _ = tf.clip_by_global_norm(grads, 3.0) # l2 norm clipping by 3
grads_rescale = [0.01 * grad for grad in grads_clip[:2]] + grads_clip[2:] # smaller gradient scale for w, b
train_op = optimizer.apply_gradients(zip(grads_rescale, vars),
global_step=global_step) # gradient update operation
# check variables memory
variable_count = np.sum(np.array([np.prod(np.array(v.get_shape().as_list())) for v in trainable_vars]))
print("total variables :", variable_count)
tf.summary.scalar("loss", loss)
merged = tf.summary.merge_all()
saver = tf.train.Saver()
with tf.Session() as sess:
tf.global_variables_initializer().run()
os.makedirs(os.path.join(config.model_path, "Check_Point"), exist_ok=True) # make folder to save model
os.makedirs(os.path.join(config.model_path, "logs"), exist_ok=True) # make folder to save log
writer = tf.summary.FileWriter(os.path.join(config.model_path, "logs"), sess.graph)
lr_factor = 1 # lr decay factor ( 1/2 per 10000 iteration)
loss_acc = 0 # accumulated loss ( for running average of loss)
for iter in range(config.iteration):
# run forward and backward propagation and update parameters
_, loss_cur, summary = sess.run([train_op, loss, merged],
feed_dict={self.fingerprint_input: random_batch(),
lr: config.lr * lr_factor})
loss_acc += loss_cur # accumulated loss for each 100 iteration
if iter % 10 == 0:
writer.add_summary(summary, iter) # write at tensorboard
if (iter + 1) % 100 == 0:
print("(iter : %d) loss: %.4f" % ((iter + 1), loss_acc / 100))
loss_acc = 0 # reset accumulated loss
if (iter + 1) % 1000 == 0:
lr_factor /= 2 # lr decay
print("learning rate is decayed! current lr : ", config.lr * lr_factor)
if (iter + 1) % 1000 == 0:
saver.save(sess, os.path.join(config.model_path, "./Check_Point/model.ckpt"),
global_step=iter // 1000)
print("model is saved!")
def train(path):
tf.reset_default_graph() # reset graph
# draw graph
batch = tf.placeholder(
shape=[None, config.N * config.M,
40], dtype=tf.float32) # input batch (time x batch x n_mel)
lr = tf.placeholder(dtype=tf.float32) # learning rate
global_step = tf.Variable(0, name='global_step', trainable=False)
w = tf.get_variable("w", initializer=np.array([10], dtype=np.float32))
b = tf.get_variable("b", initializer=np.array([-5], dtype=np.float32))
# embedding lstm (3-layer default)
with tf.variable_scope("lstm"):
lstm_cells = [
tf.contrib.rnn.LSTMCell(num_units=config.hidden,
num_proj=config.proj)
for i in range(config.num_layer)
]
lstm = tf.contrib.rnn.MultiRNNCell(
lstm_cells) # define lstm op and variables
outputs, _ = tf.nn.dynamic_rnn(
cell=lstm, inputs=batch, dtype=tf.float32,
time_major=True) # for TI-VS must use dynamic rnn
embedded = outputs[-1] # the last ouput is the embedded d-vector
embedded = normalize(embedded) # normalize
print("embedded size: ", embedded.shape)
# loss
sim_matrix = similarity(embedded, w, b)
print("similarity matrix size: ", sim_matrix.shape)
loss = loss_cal(sim_matrix, type=config.loss)
# optimizer operation
trainable_vars = tf.trainable_variables() # get variable list
optimizer = optim(
lr) # get optimizer (type is determined by configuration)
grads, vars = zip(*optimizer.compute_gradients(
loss)) # compute gradients of variables with respect to loss
grads_clip, _ = tf.clip_by_global_norm(grads, 3.0) # l2 norm clipping by 3
grads_rescale = [0.01 * grad for grad in grads_clip[:2]
] + grads_clip[2:] # smaller gradient scale for w, b
train_op = optimizer.apply_gradients(
zip(grads_rescale,
vars), global_step=global_step) # gradient update operation
# check variables memory
variable_count = np.sum(
np.array([
np.prod(np.array(v.get_shape().as_list())) for v in trainable_vars
]))
print("total variables :", variable_count)
# record loss
loss_summary = tf.summary.scalar("loss", loss)
merged = tf.summary.merge_all()
saver = tf.train.Saver()
# training session
with tf.Session() as sess:
tf.global_variables_initializer().run()
if (os.path.exists(path)):
print("Restore from {}".format(
os.path.join(path, "Check_Point/model.ckpt-2")))
saver.restore(sess, os.path.join(path, "Check_Point/model.ckpt-2")
) # restore variables from selected ckpt file
else:
os.makedirs(os.path.join(path, "Check_Point"),
exist_ok=True) # make folder to save model
os.makedirs(os.path.join(path, "logs"),
exist_ok=True) # make folder to save log
writer = tf.summary.FileWriter(os.path.join(path, "logs"), sess.graph)
epoch = 0
lr_factor = 1 # lr decay factor ( 1/2 per 10000 iteration)
loss_acc = 0 # accumulated loss ( for running average of loss)
for iter in range(config.iteration):
# run forward and backward propagation and update parameters
_, loss_cur, summary = sess.run([train_op, loss, merged],
feed_dict={
batch: random_batch(),
lr: config.lr * lr_factor
})
loss_acc += loss_cur # accumulated loss for each 100 iteration
if iter % 10 == 0:
writer.add_summary(summary, iter) # write at tensorboard
if (iter + 1) % 100 == 0:
print("(iter : %d) loss: %.4f" % ((iter + 1), loss_acc / 100))
loss_acc = 0 # reset accumulated loss
if (iter + 1) % 3000 == 0:
lr_factor /= 2 # lr decay
print("learning rate is decayed! current lr : ",
config.lr * lr_factor)
if (iter + 1) % 2500 == 0:
saver.save(sess,
os.path.join(path, "./Check_Point/model.ckpt"),
global_step=iter // 2500)
print("model is saved!")
import time
if __name__ == '__main__':
tf_config = tf.ConfigProto()
tf_config.gpu_options.per_process_gpu_memory_fraction = 0.1
sess = tf.Session(config=tf_config)
N, M = 4, 5
embed = tf.placeholder(dtype=tf.float32, shape=(N * 2 * M, 3))
# new loss
embed_1 = embed[:N * M]
embed_2 = embed[N * M:]
center_1 = embedd2center(embed_1, N, M)
center_2 = embedd2center(embed_2, N, M)
new_loss = loss_cal(similarity(embed_1, 1.0, 0.0, N, M, center_2), name='softmax', N=N, M=M) + \
loss_cal(similarity(embed_2, 1.0, 0.0, N, M, center_1), name='softmax', N=N, M=M)
# oldloss
old_loss = loss_cal(similarity(embed, 1.0, 0.0, N, M * 2), N=N, M=M * 2)
sess.run(tf.global_variables_initializer())
arr = np.random.rand(N * M * 2, 128)
times = []
print('Calculating old loss')
x = sess.run(old_loss, feed_dict={embed: arr})
print(x)
times = []
print('Calculating new loss')
def train(path):
tf.reset_default_graph() # reset graph
# draw graph
batch = tf.placeholder(
shape=[None, config.N * config.M,
40], dtype=tf.float32) # input batch (time x batch x n_mel)
lr = tf.placeholder(dtype=tf.float32) # learning rate
global_step = tf.Variable(0, name='global_step', trainable=False)
w = tf.get_variable("w", initializer=np.array([10], dtype=np.float32))
b = tf.get_variable("b", initializer=np.array([-5], dtype=np.float32))
# embedding lstm (3-layer default)
with tf.variable_scope("lstm"):
lstm_cells = [
tf.contrib.rnn.LSTMCell(num_units=config.hidden,
num_proj=config.proj)
for i in range(config.num_layer)
]
lstm = tf.contrib.rnn.MultiRNNCell(
lstm_cells) # define lstm op and variables
outputs, _ = tf.nn.dynamic_rnn(
cell=lstm, inputs=batch, dtype=tf.float32,
time_major=True) # for TI-VS must use dynamic rnn
embedded = outputs[-1] # the last ouput is the embedded d-vector
embedded = normalize(embedded) # normalize
print("embedded size: ", embedded.shape)
# loss
sim_matrix = similarity(embedded, w, b)
print("similarity matrix size: ", sim_matrix.shape)
loss = loss_cal(sim_matrix, type=config.loss)
# optimizer operation
trainable_vars = tf.trainable_variables() # get variable list
optimizer = optim(
lr) # get optimizer (type is determined by configuration)
grads, vars = zip(*optimizer.compute_gradients(
loss)) # compute gradients of variables with respect to loss
grads_clip, _ = tf.clip_by_global_norm(grads, 3.0) # l2 norm clipping by 3
grads_rescale = [0.01 * grad for grad in grads_clip[:2]
] + grads_clip[2:] # smaller gradient scale for w, b
train_op = optimizer.apply_gradients(
zip(grads_rescale,
vars), global_step=global_step) # gradient update operation
# check variables memory
variable_count = np.sum(
np.array([
np.prod(np.array(v.get_shape().as_list())) for v in trainable_vars
]))
print("total variables :", variable_count)
# record loss
loss_summary = tf.summary.scalar("loss", loss)
merged = tf.summary.merge_all()
saver = tf.train.Saver()
# training session
# with tf.Session() as sess:
gpu_options = tf.GPUOptions(allow_growth=True)
with tf.Session(config=tf.ConfigProto(gpu_options=gpu_options)) as sess:
tf.global_variables_initializer().run()
os.makedirs(os.path.join(path, "Check_Point"),
exist_ok=True) # make folder to save model
os.makedirs(os.path.join(path, "logs"),
exist_ok=True) # make folder to save log
writer = tf.summary.FileWriter(os.path.join(path, "logs"), sess.graph)
epoch = 0
lr_factor = 1 # lr decay factor ( 1/2 per 10000 iteration)
loss_acc = 0 # accumulated loss ( for running average of loss)
train_times = [
] #===========================================================================2020/05/20 16:30
total_times = 0 #===========================================================================2020/05/20 16:30
for iter in range(config.iteration):
# run forward and backward propagation and update parameters
# 记录迭代训练开始时间
begin_time = time.clock(
) #===========================================================================2020/05/20 16:30
_, loss_cur, summary = sess.run([train_op, loss, merged],
feed_dict={
batch: random_batch(),
lr: config.lr * lr_factor
})
# 记录迭代训练结束时间
end_time = time.clock(
) # ===========================================================================2020/05/20 16:30
total_times += end_time - begin_time # ===========================================================================2020/05/20 16:30
train_times.append(
str(begin_time) + '_' + str(end_time) + '_' +
str(end_time - begin_time)
) # ===========================================================================2020/05/20 16:30
loss_acc += loss_cur # accumulated loss for each 100 iteration
if iter % 10 == 0:
writer.add_summary(summary, iter) # write at tensorboard
if (iter + 1) % 100 == 0:
print("(iter : %d) loss: %.4f" % ((iter + 1), loss_acc / 100))
loss_acc = 0 # reset accumulated loss
print(
"iter:{},耗时:{}s".format(iter, str(end_time - begin_time))
) # ===========================================================================2020/05/20 16:30
if (iter + 1) % 10000 == 0:
lr_factor /= 2 # lr decay
print("learning rate is decayed! current lr : ",
config.lr * lr_factor)
if (iter + 1) % 10000 == 0:
saver.save(sess,
os.path.join(path, "./Check_Point/model.ckpt"),
global_step=iter // 10000)
print("model is saved!")
# ===========================================================================2020/05/20 16:30
# 存模型
saver.save(sess,
os.path.join(path, "./Check_Point/model.ckpt"),
global_step=iter)
print("model is saved!")
# 将时间写入文件
with open('GE2E_epoch说话人{}_batch说话人{}_人均音频数{}_iter{}_迭代耗时.txt'.format(
config.spk_num, config.N, config.M, config.iteration),
mode='w',
encoding='utf-8') as wf:
wf.write(
"epoch说话人{}个；batch说话人:{}个；人均音频数:{}条；迭代总次数：{}；平均每次训练迭代耗时:{}\n".
format(config.spk_num, config.N, config.M, config.iteration,
total_times / config.iteration))
wf.write("开始训练时间_结束训练时间_耗时\n")
for line in train_times:
wf.write(line + '\n')
def train(path):
tf.reset_default_graph() # reset graph
# draw graph
batch = tf.placeholder(shape= [None, config.N*config.M, 40], dtype=tf.float32) # input batch (time x batch x n_mel)
lr = tf.placeholder(dtype= tf.float32) # learning rate
global_step = tf.Variable(0, name='global_step', trainable=False)
w = tf.get_variable("w", initializer= np.array([10], dtype=np.float32))
b = tf.get_variable("b", initializer= np.array([-5], dtype=np.float32))
# embedding lstm (3-layer default)
with tf.variable_scope("lstm"):
lstm_cells = [tf.contrib.rnn.LSTMCell(num_units=config.hidden, num_proj=config.proj) for i in range(config.num_layer)]
lstm = tf.contrib.rnn.MultiRNNCell(lstm_cells) # define lstm op and variables
outputs, _ = tf.nn.dynamic_rnn(cell=lstm, inputs=batch, dtype=tf.float32, time_major=True) # for TI-VS must use dynamic rnn
embedded = outputs[-1] # the last ouput is the embedded d-vector
embedded = normalize(embedded) # normalize
print("embedded size: ", embedded.shape)
# loss
sim_matrix = similarity(embedded, w, b)
print("similarity matrix size: ", sim_matrix.shape)
loss = loss_cal(sim_matrix, type=config.loss)
# optimizer operation
trainable_vars= tf.trainable_variables() # get variable list
optimizer= optim(lr) # get optimizer (type is determined by configuration)
grads, vars= zip(*optimizer.compute_gradients(loss)) # compute gradients of variables with respect to loss
grads_clip, _ = tf.clip_by_global_norm(grads, 3.0) # l2 norm clipping by 3
grads_rescale= [0.01*grad for grad in grads_clip[:2]] + grads_clip[2:] # smaller gradient scale for w, b
train_op= optimizer.apply_gradients(zip(grads_rescale, vars), global_step= global_step) # gradient update operation
# check variables memory
variable_count = np.sum(np.array([np.prod(np.array(v.get_shape().as_list())) for v in trainable_vars]))
print("total variables :", variable_count)
# record loss
loss_summary = tf.summary.scalar("loss", loss)
merged = tf.summary.merge_all()
saver = tf.train.Saver()
# training session
with tf.Session() as sess:
tf.global_variables_initializer().run()
if(os.path.exists(path)):
print("Restore from {}".format(os.path.join(path, "Check_Point/model.ckpt-2")))
saver.restore(sess, os.path.join(path, "Check_Point/model.ckpt-2")) # restore variables from selected ckpt file
else:
os.makedirs(os.path.join(path, "Check_Point"), exist_ok=True) # make folder to save model
os.makedirs(os.path.join(path, "logs"), exist_ok=True) # make folder to save log
writer = tf.summary.FileWriter(os.path.join(path, "logs"), sess.graph)
epoch = 0
lr_factor = 1 # lr decay factor ( 1/2 per 10000 iteration)
loss_acc = 0 # accumulated loss ( for running average of loss)
for iter in range(config.iteration):
# run forward and backward propagation and update parameters
_, loss_cur, summary = sess.run([train_op, loss, merged],
feed_dict={batch: random_batch(), lr: config.lr*lr_factor})
loss_acc += loss_cur # accumulated loss for each 100 iteration
if iter % 10 == 0:
writer.add_summary(summary, iter) # write at tensorboard
if (iter+1) % 100 == 0:
print("(iter : %d) loss: %.4f" % ((iter+1),loss_acc/100))
loss_acc = 0 # reset accumulated loss
if (iter+1) % 10000 == 0:
lr_factor /= 2 # lr decay
print("learning rate is decayed! current lr : ", config.lr*lr_factor)
if (iter+1) % 10000 == 0:
saver.save(sess, os.path.join(path, "./Check_Point/model.ckpt"), global_step=iter//10000)
print("model is saved!")
def test(path):
tf.reset_default_graph()
# draw graph
enroll = tf.placeholder(
shape=[None, config.N * config.M, 40],
dtype=tf.float32) # enrollment batch (time x batch x n_mel)
verif = tf.placeholder(
shape=[None, config.N * config.M, 40],
dtype=tf.float32) # verification batch (time x batch x n_mel)
batch = tf.concat([enroll, verif], axis=1)
# embedding lstm (3-layer default)
with tf.variable_scope("lstm"):
lstm_cells = [
tf.contrib.rnn.LSTMCell(num_units=config.hidden,
num_proj=config.proj)
for i in range(config.num_layer)
]
lstm = tf.contrib.rnn.MultiRNNCell(
lstm_cells) # make lstm op and variables
outputs, _ = tf.nn.dynamic_rnn(
cell=lstm, inputs=batch, dtype=tf.float32,
time_major=True) # for TI-VS must use dynamic rnn
embedded = outputs[-1] # the last ouput is the embedded d-vector
embedded = normalize(embedded) # normalize
print("embedded size: ", embedded.shape)
# enrollment embedded vectors (speaker model)
enroll_embed = normalize(
tf.reduce_mean(tf.reshape(embedded[:config.N * config.M, :],
shape=[config.N, config.M, -1]),
axis=1))
# verification embedded vectors
verif_embed = embedded[config.N * config.M:, :]
similarity_matrix = similarity(embedded=verif_embed,
w=1.,
b=0.,
center=enroll_embed)
loss = loss_cal(similarity_matrix, type=config.loss)
saver = tf.train.Saver(var_list=tf.global_variables())
with tf.Session() as sess:
tf.global_variables_initializer().run()
# load model
#ckpt = tf.train.get_checkpoint_state(path)
#checkpoints = ckpt.all_model_checkpoint_paths
i = 139999
least_loss = 99999
#print("checkpoints : ",checkpoints)
while (i < 399999):
saver.restore(sess, os.path.join(path, "model.ckpt-" + str(i)))
S, L = sess.run(
[similarity_matrix, loss],
feed_dict={
enroll: random_batch(shuffle=False),
verif: random_batch(shuffle=False, utter_start=config.M)
})
S = S.reshape([config.N, config.M, -1])
print("test file path : ", config.test_path)
np.set_printoptions(precision=2)
#print(S)
if L < least_loss:
#diff = abs(FAR-FRR)
perfect_step = i
least_loss = L
print(i)
print(str(L / (config.N * config.M)))
i = i + 2500
print("\ncheckpoint: " + str(perfect_step) + " (loss:%0.2f)" %
(least_loss))
def train(path):
tf.reset_default_graph() # reset graph
# draw graph
batch = tf.placeholder(
shape=[None, config.N * config.M,
40], dtype=tf.float32) # input batch (time x batch x n_mel)
lr = tf.placeholder(dtype=tf.float32) # learning rate
global_step = tf.Variable(0, name='global_step', trainable=False)
w = tf.get_variable("w", initializer=np.array([10], dtype=np.float32))
b = tf.get_variable("b", initializer=np.array([-5], dtype=np.float32))
# embedding lstm (3-layer default)
with tf.variable_scope("lstm"):
lstm_cells = [
tf.contrib.rnn.LSTMCell(num_units=config.hidden,
num_proj=config.proj)
for i in range(config.num_layer)
]
lstm = tf.contrib.rnn.MultiRNNCell(
lstm_cells) # define lstm op and variables
outputs, _ = tf.nn.dynamic_rnn(
cell=lstm, inputs=batch, dtype=tf.float32,
time_major=True) # for TI-VS must use dynamic rnn
embedded = outputs[-1] # the last ouput is the embedded d-vector
embedded = normalize(embedded) # normalize
print("embedded size: ", embedded.shape)
# loss
sim_matrix = similarity(embedded, w, b)
print("similarity matrix size: ", sim_matrix.shape)
loss = loss_cal(sim_matrix, type=config.loss)
# optimizer operation
trainable_vars = tf.trainable_variables() # get variable list
optimizer = optim(
lr) # get optimizer (type is determined by configuration)
grads, vars = zip(*optimizer.compute_gradients(
loss)) # compute gradients of variables with respect to loss
grads_clip, _ = tf.clip_by_global_norm(grads, 3.0) # l2 norm clipping by 3
grads_rescale = [0.01 * grad for grad in grads_clip[:2]
] + grads_clip[2:] # smaller gradient scale for w, b
train_op = optimizer.apply_gradients(
zip(grads_rescale,
vars), global_step=global_step) # gradient update operation
# check variables memory
variable_count = np.sum(
np.array([
np.prod(np.array(v.get_shape().as_list())) for v in trainable_vars
]))
print("total variables :", variable_count)
# record loss
loss_summary = tf.summary.scalar("loss", loss)
merged = tf.summary.merge_all()
saver = tf.train.Saver()
iter = 0
# training session
with tf.Session() as sess:
sess.run(tf.global_variables_initializer())
if config.restore:
# Restore saved model if the user requested it, default = True
try:
ckpt = tf.train.latest_checkpoint(
checkpoint_dir=os.path.join(path, "Check_Point"))
# if (checkpoint_state and checkpoint_state.model_checkpoint_path):
# print('Loading checkpoint {}'.format(checkpoint_state.model_checkpoint_path))
#saver = tf.train.import_meta_graph(os.path.join(path,"Check_Point/model.cpkt.meta"))
#ckpt = tf.train.load_checkpoint(os.path.join(path,"Check_Point/model"))
saver.restore(sess, ckpt)
# else:
# print('No model to load at {}'.format(save_dir))
# saver.save(sess, checkpoint_path, global_step=global_step)
except:
print('Cannot restore checkpoint exception')
#if loaded == 0:
# raise AssertionError("ckpt file does not exist! Check config.model_num or config.model_path.")
#print("train file path : ", config.test_path)
else:
os.makedirs(os.path.join(path, "Check_Point"),
exist_ok=True) # make folder to save model
os.makedirs(os.path.join(path, "logs"),
exist_ok=True) # make folder to save log
writer = tf.summary.FileWriter(os.path.join(path, "logs"), sess.graph)
epoch = 0
lr_factor = 1 # lr decay factor ( 1/2 per 10000 iteration)
loss_acc = 0 # accumulated loss ( for running average of loss)
iter = 0
training_data_size = len(os.listdir(config.train_path))
print("train_size: ", training_data_size)
prev_iter = -1
# while iter < config.iteration :
while iter < config.iteration:
prev_iter = iter
# run forward and backward propagation and update parameters
iter, _, loss_cur, summary = sess.run(
[global_step, train_op, loss, merged],
feed_dict={
batch: random_batch(),
lr: config.lr * lr_factor
})
loss_acc += loss_cur # accumulated loss for each 100 iteration
if (iter - prev_iter > 1):
epoch = config.N * (iter + 1) // training_data_size
#lr_factor = lr_factor / (2**(epoch//100))
lr_factor = lr_factor / (2**(iter // 10000))
print("restored epoch:", epoch)
print("restored learning rate:", lr_factor * config.lr)
#if iter % 1000 == 0:
# writer.add_summary(summary, iter) # write at tensorboard
if (iter + 1) % 100 == 0:
print("(iter : %d) loss: %.4f" % ((iter + 1), loss_acc / 100))
loss_acc = 0 # reset accumulated loss
#if config.N * (iter+1) % training_data_size == 0:
# epoch = epoch + 1
# print("epoch: ", epoch)
if (iter + 1) % 10000 == 0:
lr_factor /= 2
print("learning rate is decayed! current lr : ",
config.lr * lr_factor)
#if ((config.N * (iter+1)) / training_data_size)%100 == 0:
# lr_factor = lr_factor / 2
# print("learning factor: " , lr_factor)
# print("learning rate is decayed! current lr : ", config.lr*lr_factor)
if (iter + 1) % 5000 == 0:
saver.save(sess,
os.path.join(path, "Check_Point/model.ckpt"),
global_step=iter) #pooooooooooooint
writer.add_summary(summary, iter) # write at tensorboard
print("model is saved!")
def train(path, args):
tf.reset_default_graph() # reset graph
timestamp = time_string() if args.time_string == None else args.time_string
# draw graph
feeder = Feeder(args.train_filename, args, hparams)
output_classes = max(
[int(f) for f in feeder.total_emt]) + 1 if args.model_type in [
'emt', 'accent'
] else max([int(f) for f in feeder.total_spk]) + 1
batch = tf.placeholder(
shape=[args.N * args.M, None, config.n_mels],
dtype=tf.float32) # input batch (time x batch x n_mel)
labels = tf.placeholder(shape=[args.N * args.M], dtype=tf.int32)
lr = tf.placeholder(dtype=tf.float32) # learning rate
global_step = tf.Variable(0, name='global_step', trainable=False)
w = tf.get_variable("w", initializer=np.array([10], dtype=np.float32))
b = tf.get_variable("b", initializer=np.array([-5], dtype=np.float32))
# embedded = triple_lstm(batch)
print("Training {} Discriminator Model".format(args.model_type))
encoder = ReferenceEncoder(
filters=hparams.reference_filters,
kernel_size=(3, 3),
strides=(2, 2),
is_training=True,
scope='Tacotron_model/inference/pretrained_ref_enc_{}'.format(
args.model_type),
depth=hparams.reference_depth) # [N, 128])
embedded = encoder(batch)
embedded = normalize(embedded)
if args.discriminator:
logit = tf.layers.dense(
embedded,
output_classes,
name='Tacotron_model/inference/pretrained_ref_enc_{}_dense'.format(
args.model_type))
labels_one_hot = tf.one_hot(tf.to_int32(labels), output_classes)
# loss = tf.reduce_mean(tf.nn.softmax_cross_entropy_with_logits(logits=logit,labels=labels_one_hot))
loss = tf.reduce_mean(
tf.nn.softmax_cross_entropy_with_logits(logits=logit,
labels=labels_one_hot))
acc, acc_op = tf.metrics.accuracy(labels=tf.argmax(labels_one_hot, 1),
predictions=tf.argmax(logit, 1))
val_acc, val_acc_op = tf.metrics.accuracy(
labels=tf.argmax(labels_one_hot, 1),
predictions=tf.argmax(logit, 1))
else:
# loss
sim_matrix = similarity(embedded,
w,
b,
args.N,
args.M,
P=hparams.reference_depth)
print("similarity matrix size: ", sim_matrix.shape)
loss = loss_cal(sim_matrix, args.N, args.M, type=config.loss)
val_acc_op = tf.constant(1.)
# optimizer operation
trainable_vars = tf.trainable_variables() # get variable list
optimizer = optim(
lr) # get optimizer (type is determined by configuration)
grads, vars = zip(*optimizer.compute_gradients(
loss)) # compute gradients of variables with respect to loss
if args.discriminator:
grads_rescale = grads
else:
grads_clip, _ = tf.clip_by_global_norm(grads,
3.0) # l2 norm clipping by 3
grads_rescale = [0.01 * grad for grad in grads_clip[:2]
] + grads_clip[2:] # smaller gradient scale for w, b
train_op = optimizer.apply_gradients(
zip(grads_rescale,
vars), global_step=global_step) # gradient update operation
# check variables memory
variable_count = np.sum(
np.array([
np.prod(np.array(v.get_shape().as_list())) for v in trainable_vars
]))
print("total variables :", variable_count)
# record loss
loss_summary = tf.summary.scalar("loss", loss)
merged = tf.summary.merge_all()
saver = tf.train.Saver(max_to_keep=20)
loss_window = ValueWindow(100)
acc_window = ValueWindow(100)
val_loss_window = ValueWindow(5)
val_acc_window = ValueWindow(5)
# training session
with tf.Session() as sess:
tf.local_variables_initializer().run()
tf.global_variables_initializer().run()
checkpoint_folder = os.path.join(path, "checkpoints", timestamp)
logs_folder = os.path.join(path, "logs", timestamp)
os.makedirs(checkpoint_folder,
exist_ok=True) # make folder to save model
os.makedirs(logs_folder, exist_ok=True) # make folder to save log
model_name = '{}_disc_model.ckpt'.format(args.model_type)
checkpoint_path = os.path.join(checkpoint_folder, model_name)
if args.restore:
checkpoint_state = tf.train.get_checkpoint_state(checkpoint_folder)
if (checkpoint_state and checkpoint_state.model_checkpoint_path):
print('Loading checkpoint {}'.format(
checkpoint_state.model_checkpoint_path))
saver.restore(sess, checkpoint_state.model_checkpoint_path)
else:
print('No model to load at {}'.format(checkpoint_folder))
saver.save(sess, checkpoint_path, global_step=global_step)
else:
print('Starting new training!')
saver.save(sess, checkpoint_path, global_step=global_step)
writer = tf.summary.FileWriter(logs_folder, sess.graph)
lr_factor = 1 # lr decay factor ( 1/2 per 10000 iteration)
iterations = 30000 if args.model_type == 'emt' else config.iteration
for iter in range(iterations):
if args.discriminator:
batch_iter, _, labels_iter = feeder.random_batch_disc()
else:
batch_iter, _, labels_iter = feeder.random_batch()
# run forward and backward propagation and update parameters
step, _, loss_cur, summary, acc_cur = sess.run(
[global_step, train_op, loss, merged, acc_op],
feed_dict={
batch: batch_iter,
labels: labels_iter,
lr: config.lr * lr_factor
})
loss_window.append(loss_cur)
acc_window.append(acc_cur)
if step % 10 == 0:
writer.add_summary(summary, step) # write at tensorboard
if (step + 1) % 20 == 0:
val_loss_cur_batch = 0
val_acc_cur_batch = 0
for iter in range(VAL_ITERS):
if args.discriminator:
batch_iter, _, labels_iter = feeder.random_batch_disc(
TEST=True)
else:
batch_iter, _, labels_iter = feeder.random_batch(
TEST=True)
# run forward and backward propagation and update parameters
val_loss_cur, val_acc_cur = sess.run([loss, val_acc_op],
feed_dict={
batch: batch_iter,
labels:
labels_iter
})
val_loss_cur_batch += val_loss_cur
val_acc_cur_batch += val_acc_cur
val_loss_cur_batch /= VAL_ITERS
val_acc_cur_batch /= VAL_ITERS
val_loss_window.append(val_loss_cur_batch)
val_acc_window.append(val_acc_cur_batch)
message = "(iter : %d) loss: %.4f" % (
(step + 1), loss_window.average)
if args.discriminator:
message += ', acc: {:.2f}%'.format(acc_window.average)
message += ", val_loss: %.4f" % (val_loss_window.average)
if args.discriminator:
message += ', val_acc: {:.2f}%'.format(
val_acc_window.average)
print(message)
lr_changed = False
if args.model_type == 'emt':
if step > 6000:
lr_changed = True if lr_factor != .01 else False
lr_factor = .01
elif step > 4000:
lr_changed = True if lr_factor != .1 else False
lr_factor = .1
if lr_changed:
print("learning rate is decayed! current lr : ",
config.lr * lr_factor)
elif args.model_type == 'spk':
if step > 300: #4000:
lr_changed = True if lr_factor != .01 else False
lr_factor = .01
elif step > 180: #2500:
lr_changed = True if lr_factor != .1 else False
lr_factor = .1
if lr_changed:
print("learning rate is decayed! current lr : ",
config.lr * lr_factor)
if step % config.save_checkpoint_iters == 0:
saver.save(sess, checkpoint_path, global_step=global_step)
def get_embeddings(path, args):
tf.reset_default_graph() # reset graph
if args.time_string == None:
raise ValueError('must provide valid time_string')
emb_dir = os.path.join(path, 'embeddings')
os.makedirs(emb_dir, exist_ok=True)
meta_path = os.path.join(emb_dir, 'meta.tsv')
emb_path = os.path.join(
emb_dir, 'emb_emt.tsv') if args.model_type == 'emt' else os.path.join(
emb_dir, 'emb_spk.tsv')
# draw graph
feeder = Feeder(args.train_filename, args, hparams)
datasets = ['emt4', 'vctk'] if args.model_type == 'emt' else ['vctk']
num_datasets = len(datasets)
batch = tf.placeholder(
shape=[num_datasets * args.N * args.M, None, config.n_mels],
dtype=tf.float32) # input batch (time x batch x n_mel)
w = tf.get_variable("w", initializer=np.array([10], dtype=np.float32))
b = tf.get_variable("b", initializer=np.array([-5], dtype=np.float32))
# embedded = triple_lstm(batch)
print("{} Discriminator Model".format(args.model_type))
encoder = ReferenceEncoder(
filters=hparams.reference_filters,
kernel_size=(3, 3),
strides=(2, 2),
is_training=True,
scope='Tacotron_model/inference/pretrained_ref_enc_{}'.format(
args.model_type),
depth=hparams.reference_depth) # [N, 128])
embedded = encoder(batch)
# loss
sim_matrix = similarity(embedded,
w,
b,
num_datasets * args.N,
args.M,
P=hparams.reference_depth)
print("similarity matrix size: ", sim_matrix.shape)
loss = loss_cal(sim_matrix,
num_datasets * args.N,
args.M,
type=config.loss)
saver = tf.train.Saver()
# training session
with tf.Session() as sess:
tf.global_variables_initializer().run()
checkpoint_folder = os.path.join(path, "checkpoints", args.time_string)
checkpoint_state = tf.train.get_checkpoint_state(checkpoint_folder)
if (checkpoint_state and checkpoint_state.model_checkpoint_path):
print('Loading checkpoint {}'.format(
checkpoint_state.model_checkpoint_path))
saver.restore(sess, checkpoint_state.model_checkpoint_path)
else:
raise ValueError(
'No model to load at {}'.format(checkpoint_folder))
feeder_batch, meta = feeder.emb_batch(make_meta=True,
datasets=datasets)
emb, loss = sess.run([embedded, loss], feed_dict={batch: feeder_batch})
print("loss: {:.4f}".format(loss))
meta.to_csv(meta_path, sep='\t', index=False)
pd.DataFrame(emb).to_csv(emb_path, sep='\t', index=False, header=False)
def train(path):
tf.reset_default_graph() # reset graph
# Draw train graph
train_batch = tf.placeholder(
shape=[None, config.N * config.M,
40], dtype=tf.float32) # input batch (time x batch x n_mel)
lr = tf.placeholder(dtype=tf.float32) # learning rate
global_step = tf.Variable(0, name='global_step', trainable=False)
w = tf.get_variable("w", initializer=np.array([10], dtype=np.float32))
b = tf.get_variable("b", initializer=np.array([-5], dtype=np.float32))
# Embedding LSTM (3-layer default)
with tf.variable_scope("lstm", reuse=None):
lstm_cells = [
tf.contrib.rnn.LSTMCell(num_units=config.hidden,
num_proj=config.proj)
for i in range(config.num_layer)
]
print(config.num_layer)
lstm = tf.contrib.rnn.MultiRNNCell(
lstm_cells) # define lstm op and variables
outputs, _ = tf.nn.dynamic_rnn(
cell=lstm, inputs=train_batch, dtype=tf.float32,
time_major=True) # for TI-VS must use dynamic rnn
embedded = outputs[-1] # the last ouput is the embedded d-vector
embedded = normalize(embedded) # normalize
print("embedded size: ", embedded.shape)
# Define loss
sim_matrix = similarity(embedded, w, b)
print("similarity matrix size: ", sim_matrix.shape)
loss = loss_cal(sim_matrix, type=config.loss)
# Optimizer operation
trainable_vars = tf.trainable_variables() # get variable list
optimizer = optim(
lr) # get optimizer (type is determined by configuration)
grads, vars = zip(*optimizer.compute_gradients(
loss)) # compute gradients of variables with respect to loss
grads_clip, _ = tf.clip_by_global_norm(grads, 3.0) # l2 norm clipping by 3
grads_rescale = [0.01 * grad for grad in grads_clip[:2]
] + grads_clip[2:] # smaller gradient scale for w, b
train_op = optimizer.apply_gradients(
zip(grads_rescale,
vars), global_step=global_step) # gradient update operation
# Check variables memory
variable_count = np.sum(
np.array([
np.prod(np.array(v.get_shape().as_list())) for v in trainable_vars
]))
print("total variables :", variable_count)
# TensorBoard vars declaration
lr_summ = tf.summary.scalar(name='My_LR', tensor=lr)
loss_summary = tf.summary.scalar("loss_ORIG", loss)
w_summary = tf.summary.histogram('My_Weights', w)
b_summary = tf.summary.histogram('My_Bias', b)
merged = tf.summary.merge_all() # merge all TB vars into one
saver = tf.train.Saver(
max_to_keep=40
) # create a saver, max_to_keep=40 w/ every 2500 steps = around 100000
# Training session
with tf.Session() as sess:
tf.global_variables_initializer().run()
os.makedirs(os.path.join(path, "Check_Point"),
exist_ok=True) # make folder to save model
os.makedirs(os.path.join(path, "logs"),
exist_ok=True) # make folder to save TensorBoard logs
os.makedirs(
"./Plots/",
exist_ok=True) # make folder to save all plots and .txt logs
os.makedirs("./Plots/" + path[11:],
exist_ok=True) # makes the subdirs for individual plots
log_path = "./Plots/" + path[11:] + "/" + path[
11:] + ".txt" # declares .txt log files naming convention
# Block of code to make folders of runs for TensorBoard visualization
logspath = os.path.join(path, "logs")
num_previous_runs = os.listdir('./tisv_model/logs')
if len(num_previous_runs) == 0:
run_number = 1
else:
run_number = max(
[int(s.split('run_')[1]) for s in num_previous_runs]) + 1
curr_logdir = 'run_%02d' % run_number
writer = tf.summary.FileWriter(
os.path.join(logspath, curr_logdir),
sess.graph) # Define writer for TensorBoard
# END of Block
# epoch = 0 # not used
lr_factor = 1 # LR decay factor (1/2 per 10000 iteration)
loss_acc = 0 # accumulated loss (for calculating average of loss)
# declares lists for figure creation
EER_list = [] # collects the EER results every 100 steps for plotting
train_loss_list = [
] # collects the training loss results every 100 steps for plotting
# LR_decay_list = [] # not used
for iter in range(config.iteration):
# run forward and backward propagation and update parameters
_, loss_cur, summary = sess.run([train_op, loss, merged],
feed_dict={
train_batch: random_batch(),
lr: config.lr * lr_factor
})
loss_acc += loss_cur # accumulated loss for each 100 iteration
# write train_loss to TensorBoard
if iter % 10 == 0:
writer.add_summary(summary, iter)
# perform validation
if (iter + 1) % 100 == 0:
# print("(iter : %d) loss: %.4f" % ((iter+1),loss_acc/100))
# print("==============VALIDATION START!============")
# Draw validation graph
enroll = tf.placeholder(
shape=[None, config.N * config.M, 40], dtype=tf.float32
) # enrollment batch (time x batch x n_mel)
valid = tf.placeholder(
shape=[None, config.N * config.M, 40], dtype=tf.float32
) # validation batch (time x batch x n_mel)
val_batch = tf.concat([enroll, valid], axis=1)
# Embedding LSTM (3-layer default)
with tf.variable_scope("lstm", reuse=tf.AUTO_REUSE):
lstm_cells = [
tf.contrib.rnn.LSTMCell(num_units=config.hidden,
num_proj=config.proj)
for i in range(config.num_layer)
]
lstm = tf.contrib.rnn.MultiRNNCell(
lstm_cells) # make lstm op and variables
outputs, _ = tf.nn.dynamic_rnn(
cell=lstm,
inputs=val_batch,
dtype=tf.float32,
time_major=True) # for TI-VS must use dynamic rnn
embedded = outputs[
-1] # the last ouput is the embedded d-vector
embedded = normalize(embedded) # normalize
# print("embedded size: ", embedded.shape)
# enrollment embedded vectors (speaker model)
enroll_embed = normalize(
tf.reduce_mean(tf.reshape(embedded[:config.N *
config.M, :],
shape=[config.N, config.M, -1]),
axis=1))
# validation embedded vectors
valid_embed = embedded[config.N * config.M:, :]
similarity_matrix = similarity(embedded=valid_embed,
w=1.,
b=0.,
center=enroll_embed)
# print("test file path : ", config.test_path)
# Return similarity matrix (SM) after enrollment and validation
time1 = time.time() # for check inference time
S = sess.run(similarity_matrix,
feed_dict={
enroll:
random_batch(shuffle=False,
forceValidation=True),
valid:
random_batch(shuffle=False,
utter_start=config.M,
forceValidation=True)
})
S = S.reshape([config.N, config.M, -1])
time2 = time.time()
np.set_printoptions(precision=4)
# print("inference time for %d utterences : %0.2fs" % (2 * config.M * config.N, time2 - time1))
# print(S) # print similarity matrix
# calculating EER
diff = 1
EER = 0
EER_thres = 0
EER_FAR = 0
EER_FRR = 0
# through thresholds calculate false acceptance ratio (FAR) and false reject ratio (FRR)
for thres in [0.01 * i + 0.5 for i in range(50)]:
S_thres = S > thres
# False acceptance ratio = false acceptance / mismatched population (enroll speaker != validation speaker)
FAR = sum([
np.sum(S_thres[i]) - np.sum(S_thres[i, :, i])
for i in range(config.N)
]) / (config.N - 1) / config.M / config.N
# False reject ratio = false reject / matched population (enroll speaker = validation speaker)
FRR = sum([
config.M - np.sum(S_thres[i][:, i])
for i in range(config.N)
]) / config.M / config.N
# Save threshold when FAR = FRR (=EER)
if diff > abs(FAR - FRR):
diff = abs(FAR - FRR)
EER = (FAR + FRR) / 2
EER_thres = thres
EER_FAR = FAR
EER_FRR = FRR
print(
"\n(iter : %d) loss: %.4f || EER : %0.4f (thres:%0.4f, FAR:%0.4f, FRR:%0.4f) || inference time for %d utterences: %0.2fs"
% ((iter + 1), loss_acc / 100, EER, EER_thres, EER_FAR,
EER_FRR, 2 * config.M * config.N, time2 - time1))
EER_list.append(EER)
# print("==============VALIDATION END!==============")
train_loss_list.append(loss_acc / 100)
# save figures
if (iter + 1) % 500 == 0:
plt.ioff()
fig_EER = plt.figure()
iter_list = [(i + 1) * 100 for i in range(len(EER_list))]
plt.plot(iter_list, EER_list, label="EER")
plt.xlabel("Steps")
plt.ylabel("EER")
plt.title("Equal error rate progress")
plt.grid(True)
plot_path = "./Plots/" + path[11:] + "/" + path[
11:] + ".png"
print("Saving plot as: %s" % plot_path)
plt.savefig(plot_path)
plt.close(fig_EER)
plt.ioff()
fig_LOSS = plt.figure()
iter_list = [(i + 1) * 100 for i in range(len(EER_list))]
plt.plot(iter_list,
train_loss_list,
color="orange",
label="train_loss")
plt.xlabel("Steps")
plt.ylabel("Training loss")
plt.title("Training progress")
plt.grid(True)
plot_path = "./Plots/" + path[11:] + "/" + path[
11:] + "_LOSS.png"
print("Saving plot as: %s" % plot_path)
plt.savefig(plot_path)
plt.close(fig_LOSS)
# Every 100 iterations, save a log of training progress
with open(log_path, "a") as file:
file.write(
str(iter + 1) + "," + str(loss_acc / 100) + "," +
str(EER) + "," + str(EER_thres) + "," + str(EER_FAR) +
"," + str(EER_FRR) + "\n")
loss_acc = 0 # reset accumulated loss
# decay learning rate
if (iter + 1) % 5000 == 0:
lr_factor /= 2 # lr decay
print("Learning Rate (LR) decayed! Current LR: ",
config.lr * lr_factor)
# save model checkpoint
if (iter + 1) % 5000 == 0:
saver.save(sess,
os.path.join(path, "./Check_Point/model.ckpt"),
global_step=iter // 5000) # naming val
print("Model checkpoint saved!")
