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model.py
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model.py
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# Copyright (c) 2021, Tuan Nguyen.
# All rights reserved.
from __future__ import division
from __future__ import print_function
from __future__ import absolute_import
import tensorflow as tf
from tensorflow.contrib.framework import arg_scope
from tensorflow.contrib.framework import add_arg_scope
from tensorbayes.layers import dense, conv2d, batch_norm, instance_norm
from tensorflow.python.ops.nn_impl import sigmoid_cross_entropy_with_logits as sigmoid_x_entropy
from tensorbayes.tfutils import softmax_cross_entropy_with_two_logits as softmax_x_entropy_two
from generic_utils import random_seed
from layers import leaky_relu
import os
from generic_utils import model_dir
import numpy as np
import tensorbayes as tb
from layers import batch_ema_acc
def build_block(input_layer, layout, info=1):
x = input_layer
for i in range(0, len(layout)):
with tf.variable_scope('l{:d}'.format(i)):
f, f_args, f_kwargs = layout[i]
x = f(x, *f_args, **f_kwargs)
if info > 1:
print(x)
return x
@add_arg_scope
def normalize_perturbation(d, scope=None):
with tf.name_scope(scope, 'norm_pert'):
output = tf.nn.l2_normalize(d, axis=np.arange(1, len(d.shape)))
return output
def build_encode_template(
input_layer, training_phase, scope, encode_layout,
reuse=None, internal_update=False, getter=None, inorm=True, cnn_size='large'):
with tf.variable_scope(scope, reuse=reuse, custom_getter=getter):
with arg_scope([leaky_relu], a=0.1), \
arg_scope([conv2d, dense], activation=leaky_relu, bn=True, phase=training_phase), \
arg_scope([batch_norm], internal_update=internal_update):
preprocess = instance_norm if inorm else tf.identity
layout = encode_layout(preprocess=preprocess, training_phase=training_phase, cnn_size=cnn_size)
output_layer = build_block(input_layer, layout)
return output_layer
def build_decode_template(
input_layer, training_phase, scope, decode_layout,
reuse=None, internal_update=False, getter=None, inorm=False, cnn_size='large'):
with tf.variable_scope(scope, reuse=reuse, custom_getter=getter):
with arg_scope([leaky_relu], a=0.1), \
arg_scope([conv2d, dense], activation=leaky_relu, bn=True, phase=training_phase), \
arg_scope([batch_norm], internal_update=internal_update):
layout = decode_layout(training_phase=training_phase)
output_layer = build_block(input_layer, layout)
return output_layer
def build_class_discriminator_template(
input_layer, training_phase, scope, num_classes, class_discriminator_layout,
reuse=None, internal_update=False, getter=None, cnn_size='large'):
with tf.variable_scope(scope, reuse=reuse, custom_getter=getter):
with arg_scope([leaky_relu], a=0.1), \
arg_scope([conv2d, dense], activation=leaky_relu, bn=True, phase=training_phase), \
arg_scope([batch_norm], internal_update=internal_update):
layout = class_discriminator_layout(num_classes=num_classes, global_pool=True, activation=None,
cnn_size=cnn_size)
output_layer = build_block(input_layer, layout)
return output_layer
def build_domain_discriminator_template(x, domain_layout, c=1, reuse=None):
with tf.variable_scope('domain_disc', reuse=reuse):
with arg_scope([dense], activation=tf.nn.relu):
layout = domain_layout(c=c)
output_layer = build_block(x, layout)
return output_layer
def get_default_config():
tf_config = tf.ConfigProto()
tf_config.gpu_options.allow_growth = True
tf_config.log_device_placement = False
tf_config.allow_soft_placement = True
return tf_config
class LAMDA():
def __init__(self,
model_name="LAMDA-results",
learning_rate=0.001,
batch_size=128,
num_iters=80000,
summary_freq=400,
src_class_trade_off=1.0,
src_vat_trade_off=1.0,
trg_trade_off=1.0,
domain_trade_off=1.0,
adapt_domain_trade_off=False,
encode_layout=None,
decode_layout=None,
classify_layout=None,
domain_layout=None,
freq_calc_metrics=10,
init_calc_metrics=2,
current_time='',
inorm=True,
m_on_D_trade_off=1.0,
m_plus_1_on_D_trade_off=1.0,
m_plus_1_on_G_trade_off=1.0,
m_on_G_trade_off=0.1,
lamda_model_id='',
save_grads=False,
only_save_final_model=True,
cnn_size='large',
update_target_loss=True,
sample_size=50,
src_recons_trade_off=0.1,
**kwargs):
self.model_name = model_name
self.batch_size = batch_size
self.learning_rate = learning_rate
self.num_iters = num_iters
self.summary_freq = summary_freq
self.src_class_trade_off = src_class_trade_off
self.src_vat_trade_off = src_vat_trade_off
self.trg_trade_off = trg_trade_off
self.domain_trade_off = domain_trade_off
self.adapt_domain_trade_off = adapt_domain_trade_off
self.encode_layout = encode_layout
self.decode_layout = decode_layout
self.classify_layout = classify_layout
self.domain_layout = domain_layout
self.freq_calc_metrics = freq_calc_metrics
self.init_calc_metrics = init_calc_metrics
self.current_time = current_time
self.inorm = inorm
self.m_on_D_trade_off = m_on_D_trade_off
self.m_plus_1_on_D_trade_off = m_plus_1_on_D_trade_off
self.m_plus_1_on_G_trade_off = m_plus_1_on_G_trade_off
self.m_on_G_trade_off = m_on_G_trade_off
self.lamda_model_id = lamda_model_id
self.save_grads = save_grads
self.only_save_final_model = only_save_final_model
self.cnn_size = cnn_size
self.update_target_loss = update_target_loss
self.sample_size = sample_size
self.src_recons_trade_off = src_recons_trade_off
def _init(self, data_loader):
np.random.seed(random_seed())
tf.set_random_seed(random_seed())
tf.reset_default_graph()
self.tf_graph = tf.get_default_graph()
self.tf_config = get_default_config()
self.tf_session = tf.Session(config=self.tf_config, graph=self.tf_graph)
self.data_loader = data_loader
self.num_classes = self.data_loader.num_class
self.batch_size_src = self.sample_size*self.num_classes
def _get_variables(self, list_scopes):
variables = []
for scope_name in list_scopes:
variables.append(tf.get_collection('trainable_variables', scope_name))
return variables
def convert_one_hot(self, y):
y_idx = y.reshape(-1).astype(int) if y is not None else None
y = np.eye(self.num_classes)[y_idx] if y is not None else None
return y
def _get_scope(self, part_name, side_name, same_network=True):
suffix = ''
if not same_network:
suffix = '/' + side_name
return part_name + suffix
def _get_primary_scopes(self):
return ['generator', 'classifier', 'decode']
def _get_secondary_scopes(self):
return ['domain_disc']
def _build_source_middle(self, x_src):
scope_name = self._get_scope('generator', 'src')
return build_encode_template(x_src, encode_layout=self.encode_layout,
scope=scope_name, training_phase=self.is_training, inorm=self.inorm, cnn_size=self.cnn_size)
def _build_middle_source(self, x_src_mid):
scope_name = self._get_scope('decode', 'src')
return build_decode_template(
x_src_mid, decode_layout=self.decode_layout, scope=scope_name, training_phase=self.is_training, inorm=self.inorm, cnn_size=self.cnn_size
)
def _build_target_middle(self, x_trg):
scope_name = self._get_scope('generator', 'trg')
return build_encode_template(
x_trg, encode_layout=self.encode_layout,
scope=scope_name, training_phase=self.is_training, inorm=self.inorm,
reuse=True, internal_update=True, cnn_size=self.cnn_size
) # reuse the 'encode_layout'
def _build_classifier(self, x, num_classes, ema=None, is_teacher=False):
g_teacher_scope = self._get_scope('generator', 'teacher', same_network=False)
g_x = build_encode_template(
x, encode_layout=self.encode_layout,
scope=g_teacher_scope if is_teacher else 'generator', training_phase=False, inorm=self.inorm,
reuse=False if is_teacher else True, getter=None if is_teacher else tb.tfutils.get_getter(ema),
cnn_size=self.cnn_size
)
h_teacher_scope = self._get_scope('classifier', 'teacher', same_network=False)
h_g_x = build_class_discriminator_template(
g_x, training_phase=False, scope=h_teacher_scope if is_teacher else 'classifier', num_classes=num_classes,
reuse=False if is_teacher else True, class_discriminator_layout=self.classify_layout,
getter=None if is_teacher else tb.tfutils.get_getter(ema), cnn_size=self.cnn_size
)
return h_g_x
def _build_domain_discriminator(self, x_mid, reuse=False):
return build_domain_discriminator_template(x_mid, domain_layout=self.domain_layout, c=self.num_classes+1, reuse=reuse)
def _build_class_src_discriminator(self, x_src, num_src_classes):
return build_class_discriminator_template(
self.x_src_mid, training_phase=self.is_training, scope='classifier', num_classes=num_src_classes,
class_discriminator_layout=self.classify_layout, cnn_size=self.cnn_size
)
def _build_class_trg_discriminator(self, x_trg, num_trg_classes):
return build_class_discriminator_template(
self.x_trg_mid, training_phase=self.is_training, scope='classifier', num_classes=num_trg_classes,
reuse=True, internal_update=True, class_discriminator_layout=self.classify_layout, cnn_size=self.cnn_size
)
def perturb_image(self, x, p, num_classes, class_discriminator_layout, encode_layout,
pert='vat', scope=None, radius=3.5, scope_classify=None, scope_encode=None, training_phase=None):
with tf.name_scope(scope, 'perturb_image'):
eps = 1e-6 * normalize_perturbation(tf.random_normal(shape=tf.shape(x)))
# Predict on randomly perturbed image
x_eps_mid = build_encode_template(
x + eps, encode_layout=encode_layout, scope=scope_encode, training_phase=training_phase, reuse=True,
inorm=self.inorm, cnn_size=self.cnn_size)
x_eps_pred = build_class_discriminator_template(
x_eps_mid, class_discriminator_layout=class_discriminator_layout,
training_phase=training_phase, scope=scope_classify, reuse=True, num_classes=num_classes,
cnn_size=self.cnn_size
)
# eps_p = classifier(x + eps, phase=True, reuse=True)
loss = softmax_x_entropy_two(labels=p, logits=x_eps_pred)
# Based on perturbed image, get direction of greatest error
eps_adv = tf.gradients(loss, [eps], aggregation_method=2)[0]
# Use that direction as adversarial perturbation
eps_adv = normalize_perturbation(eps_adv)
x_adv = tf.stop_gradient(x + radius * eps_adv)
return x_adv
def vat_loss(self, x, p, num_classes, class_discriminator_layout, encode_layout,
scope=None, scope_classify=None, scope_encode=None, training_phase=None):
with tf.name_scope(scope, 'smoothing_loss'):
x_adv = self.perturb_image(
x, p, num_classes, class_discriminator_layout=class_discriminator_layout, encode_layout=encode_layout,
scope_classify=scope_classify, scope_encode=scope_encode, training_phase=training_phase)
x_adv_mid = build_encode_template(
x_adv, encode_layout=encode_layout, scope=scope_encode, training_phase=training_phase, inorm=self.inorm,
reuse=True, cnn_size=self.cnn_size)
x_adv_pred = build_class_discriminator_template(
x_adv_mid, training_phase=training_phase, scope=scope_classify, reuse=True, num_classes=num_classes,
class_discriminator_layout=class_discriminator_layout, cnn_size=self.cnn_size
)
# p_adv = classifier(x_adv, phase=True, reuse=True)
loss = tf.reduce_mean(softmax_x_entropy_two(labels=tf.stop_gradient(p), logits=x_adv_pred))
return loss
def _build_vat_loss(self, x, p, num_classes, scope=None, scope_classify=None, scope_encode=None):
return self.vat_loss( # compute the divergence between C(x) and C(G(x+r))
x, p, num_classes,
class_discriminator_layout=self.classify_layout,
encode_layout=self.encode_layout,
scope=scope, scope_classify=scope_classify, scope_encode=scope_encode,
training_phase=self.is_training
)
def _build_model(self):
self.x_src = tf.placeholder(dtype=tf.float32, shape=(None, 2048))
self.x_trg = tf.placeholder(dtype=tf.float32, shape=(None, 2048))
self.y_src = tf.placeholder(dtype=tf.float32, shape=(None, self.num_classes))
self.y_trg = tf.placeholder(dtype=tf.float32, shape=(None, self.num_classes))
T = tb.utils.TensorDict(dict(
x_tmp=tf.placeholder(dtype=tf.float32, shape=(None, 2048)),
y_tmp=tf.placeholder(dtype=tf.float32, shape=(None, self.num_classes))
))
self.is_training = tf.placeholder(tf.bool, shape=(), name='is_training')
self.x_src_mid = self._build_source_middle(self.x_src)
self.x_src_prime = self._build_middle_source(self.x_src_mid)
self.x_trg_mid = self._build_target_middle(self.x_trg)
self.x_fr_src = self._build_domain_discriminator(self.x_src_mid)
self.x_fr_trg = self._build_domain_discriminator(self.x_trg_mid, reuse=True)
# use m units of D(G(x_s)) for classification on joint space
self.m_src_on_D_logit = tf.gather(self.x_fr_src, tf.range(0, self.num_classes, dtype=tf.int32), axis=1)
self.loss_m_src_on_D = tf.reduce_mean(tf.nn.softmax_cross_entropy_with_logits_v2(labels=self.y_src,
logits=self.m_src_on_D_logit))
# maximize log likelihood of target data and minimize that of source data on 11th class
self.m_plus_1_src_logit_on_D = tf.gather(self.x_fr_src, tf.range(self.num_classes, self.num_classes + 1,
dtype=tf.int32), axis=1)
self.m_plus_1_trg_logit_on_D = tf.gather(self.x_fr_trg, tf.range(self.num_classes, self.num_classes + 1,
dtype=tf.int32), axis=1)
self.loss_m_plus_1_on_D = 0.5 * tf.reduce_mean(sigmoid_x_entropy(
labels=tf.ones_like(self.m_plus_1_trg_logit_on_D), logits=self.m_plus_1_trg_logit_on_D) + \
sigmoid_x_entropy(
labels=tf.zeros_like(self.m_plus_1_src_logit_on_D),
logits=self.m_plus_1_src_logit_on_D))
self.loss_disc = self.m_on_D_trade_off*self.loss_m_src_on_D + self.m_plus_1_on_D_trade_off*self.loss_m_plus_1_on_D
self.y_src_logit = self._build_class_src_discriminator(self.x_src_mid, self.num_classes)
self.y_trg_logit = self._build_class_trg_discriminator(self.x_trg_mid, self.num_classes)
self.y_src_pred = tf.argmax(self.y_src_logit, 1, output_type=tf.int32)
self.y_trg_pred = tf.argmax(self.y_trg_logit, 1, output_type=tf.int32)
self.y_src_sparse = tf.argmax(self.y_src, 1, output_type=tf.int32)
self.y_trg_sparse = tf.argmax(self.y_trg, 1, output_type=tf.int32)
###############################
# classification loss
self.src_loss_class_detail = tf.nn.softmax_cross_entropy_with_logits_v2(
logits=self.y_src_logit, labels=self.y_src) # (batch_size,)
self.src_loss_class = tf.reduce_mean(self.src_loss_class_detail) # real number
self.trg_loss_class_detail = tf.nn.softmax_cross_entropy_with_logits_v2(
logits=self.y_trg_logit, labels=self.y_trg)
self.trg_loss_class = tf.reduce_mean(self.trg_loss_class_detail) # just use for testing
self.src_accuracy = tf.reduce_mean(tf.cast(tf.equal(self.y_src_sparse, self.y_src_pred), 'float32'))
self.trg_accuracy_batch = tf.cast(tf.equal(self.y_trg_sparse, self.y_trg_pred), 'float32')
self.trg_accuracy = tf.reduce_mean(self.trg_accuracy_batch)
#############################
# generator loss
self.loss_m_plus_1_on_G = 0.5 * tf.reduce_mean(sigmoid_x_entropy(
labels=tf.zeros_like(self.m_plus_1_trg_logit_on_D), logits=self.m_plus_1_trg_logit_on_D) + \
sigmoid_x_entropy(
labels=tf.ones_like(self.m_plus_1_src_logit_on_D),
logits=self.m_plus_1_src_logit_on_D))
self.A_m = self.y_trg_logit
self.m_trg_on_D_logit = tf.gather(self.x_fr_trg, tf.range(0, self.num_classes, dtype=tf.int32), axis=1)
self.loss_m_trg_on_G = tf.reduce_mean(
softmax_x_entropy_two(logits=self.m_trg_on_D_logit, labels=self.A_m))
self.loss_generator = self.m_plus_1_on_G_trade_off * self.loss_m_plus_1_on_G + \
self.m_on_G_trade_off * self.loss_m_trg_on_G
#############################
# vat loss
self.src_loss_vat = self._build_vat_loss(
self.x_src, self.y_src_logit, self.num_classes,
scope_encode=self._get_scope('generator', 'src'), scope_classify='classifier'
)
self.trg_loss_vat = self._build_vat_loss(
self.x_trg, self.y_trg_logit, self.num_classes,
scope_encode=self._get_scope('generator', 'trg'), scope_classify='classifier'
)
#############################
# conditional entropy loss w.r.t. target distribution
self.trg_loss_cond_entropy = tf.reduce_mean(softmax_x_entropy_two(labels=self.y_trg_logit,
logits=self.y_trg_logit))
#############################
# reconstruct loss
# self.src_reconstruct_loss = tf.reduce_mean(tf.pow(tf.norm(self.x_src - self.x_src_prime, axis=1, ord=2), 2)) / 1000.0
#############################
# construct primary loss
if self.adapt_domain_trade_off:
self.domain_trade_off_ph = tf.placeholder(dtype=tf.float32)
lst_primary_losses = [
(self.src_class_trade_off, self.src_loss_class),
(self.domain_trade_off, self.loss_generator),
(self.src_vat_trade_off, self.src_loss_vat),
(self.trg_trade_off, self.trg_loss_vat),
(self.trg_trade_off, self.trg_loss_cond_entropy)
# (self.src_recons_trade_off, self.src_reconstruct_loss)
]
self.primary_loss = tf.constant(0.0)
for trade_off, loss in lst_primary_losses:
if trade_off != 0:
self.primary_loss += trade_off * loss
primary_variables = self._get_variables(self._get_primary_scopes())
# Evaluation (EMA)
ema = tf.train.ExponentialMovingAverage(decay=0.998)
var_list_for_ema = primary_variables[0] + primary_variables[1]
ema_op = ema.apply(var_list=var_list_for_ema)
self.ema_p = self._build_classifier(T.x_tmp, self.num_classes, ema)
# Accuracies
self.batch_ema_acc = batch_ema_acc(T.y_tmp, self.ema_p)
self.fn_batch_ema_acc = tb.function(self.tf_session, [T.x_tmp, T.y_tmp], self.batch_ema_acc)
self.train_main = \
tf.train.AdamOptimizer(self.learning_rate, 0.5).minimize(self.primary_loss, var_list=primary_variables)
self.primary_train_op = tf.group(self.train_main, ema_op)
# self.primary_train_op = tf.group(self.train_main)
if self.save_grads:
self.grads_wrt_primary_loss = tf.train.AdamOptimizer(self.learning_rate, 0.5).compute_gradients(
self.primary_loss, var_list=primary_variables)
#############################
# construct secondary loss
secondary_variables = self._get_variables(self._get_secondary_scopes())
self.secondary_train_op = \
tf.train.AdamOptimizer(self.learning_rate, 0.5).minimize(self.loss_disc,
var_list=secondary_variables)
#############################
# construct one more target loss
if self.update_target_loss:
self.target_loss = self.trg_trade_off * (self.trg_loss_vat + self.trg_loss_cond_entropy)
self.target_train_op = \
tf.train.AdamOptimizer(self.learning_rate, 0.5).minimize(self.target_loss,
var_list=primary_variables)
if self.save_grads:
self.grads_wrt_secondary_loss = tf.train.AdamOptimizer(self.learning_rate, 0.5).compute_gradients(
self.loss_disc, var_list=secondary_variables)
############################
# summaries
tf.summary.scalar('domain/loss_disc', self.loss_disc)
tf.summary.scalar('domain/loss_disc/loss_m_src_on_D', self.loss_m_src_on_D)
tf.summary.scalar('domain/loss_disc/loss_m_plus_1_on_D', self.loss_m_plus_1_on_D)
tf.summary.scalar('primary_loss/src_loss_class', self.src_loss_class)
tf.summary.scalar('primary_loss/loss_generator', self.loss_generator)
tf.summary.scalar('primary_loss/loss_generator/loss_m_plus_1_on_G', self.loss_m_plus_1_on_G)
tf.summary.scalar('primary_loss/loss_generator/loss_m_trg_on_G', self.loss_m_trg_on_G)
tf.summary.scalar('acc/src_acc', self.src_accuracy)
tf.summary.scalar('acc/trg_acc', self.trg_accuracy)
tf.summary.scalar('hyperparameters/learning_rate', self.learning_rate)
tf.summary.scalar('hyperparameters/src_class_trade_off', self.src_class_trade_off)
tf.summary.scalar('hyperparameters/domain_trade_off',
self.domain_trade_off_ph if self.adapt_domain_trade_off
else self.domain_trade_off)
self.tf_merged_summaries = tf.summary.merge_all()
if self.save_grads:
with tf.name_scope("visualize"):
for var in tf.trainable_variables():
tf.summary.histogram(var.op.name + '/values', var)
for grad, var in self.grads_wrt_primary_loss:
if grad is not None:
tf.summary.histogram(var.op.name + '/grads_wrt_primary_loss', grad)
for grad, var in self.grads_wrt_secondary_loss:
if grad is not None:
tf.summary.histogram(var.op.name + '/grads_wrt_secondary_loss', grad)
def _fit_loop(self):
print('Start training', 'LAMDA at', os.path.basename(__file__))
print('============ LOG-ID: %s ============' % self.current_time)
self.tf_session.run(tf.global_variables_initializer())
num_src_samples = self.data_loader.src_train[0][2].shape[0]
num_trg_samples = self.data_loader.trg_train[0][2].shape[0]
with self.tf_graph.as_default():
saver = tf.train.Saver(tf.global_variables(), max_to_keep=3)
self.checkpoint_path = os.path.join(model_dir(), self.model_name, "saved-model", "{}".format(self.lamda_model_id))
check_point = tf.train.get_checkpoint_state(self.checkpoint_path)
if check_point and tf.train.checkpoint_exists(check_point.model_checkpoint_path):
print("Load model parameters from %s\n" % check_point.model_checkpoint_path)
saver.restore(self.tf_session, check_point.model_checkpoint_path)
for it in range(self.num_iters):
idx_src_samples = np.random.permutation(num_src_samples)[:self.batch_size]
idx_trg_samples = np.random.permutation(num_trg_samples)[:self.batch_size]
feed_data = dict()
feed_data[self.x_src] = self.data_loader.src_train[0][1][idx_src_samples, :]
feed_data[self.y_src] = self.data_loader.src_train[0][2][idx_src_samples]
feed_data[self.y_src] = feed_data[self.y_src]
feed_data[self.x_trg] = self.data_loader.trg_train[0][1][idx_trg_samples, :]
feed_data[self.y_trg] = self.data_loader.trg_train[0][2][idx_trg_samples]
feed_data[self.y_trg] = feed_data[self.y_trg]
feed_data[self.is_training] = True
_, loss_disc = \
self.tf_session.run(
[self.secondary_train_op, self.loss_disc],
feed_dict=feed_data
)
_, src_loss_class, loss_generator, trg_loss_class, src_acc, trg_acc = \
self.tf_session.run(
[self.primary_train_op, self.src_loss_class, self.loss_generator,
self.trg_loss_class, self.src_accuracy, self.trg_accuracy],
feed_dict=feed_data
)
if it == 0 or (it + 1) % self.summary_freq == 0:
print("iter %d/%d loss_disc %.3f; src_loss_class %.5f; loss_generator %.3f\n"
"src_acc %.2f" % (it + 1, self.num_iters, loss_disc, src_loss_class, loss_generator, src_acc * 100))
if (it + 1) % self.summary_freq == 0:
if not self.only_save_final_model:
self.save_trained_model(saver, it + 1)
elif it + 1 == self.num_iters:
self.save_trained_model(saver, it + 1)
# Save acc values
self.save_value(step=it + 1)
def save_trained_model(self, saver, step):
# Save model
checkpoint_path = os.path.join(model_dir(), self.model_name, "saved-model",
"{}".format(self.current_time))
checkpoint_path = os.path.join(checkpoint_path, "lamda_" + self.current_time + ".ckpt")
directory = os.path.dirname(checkpoint_path)
if not os.path.exists(directory):
os.makedirs(directory)
saver.save(self.tf_session, checkpoint_path, global_step=step)
def save_value(self, step):
# Save ema accuracy
acc_trg_test_ema, summary_trg_test_ema = self.compute_value(self.fn_batch_ema_acc, 'test/trg_test_ema',
x_full=self.data_loader.trg_test[0][1],
y=self.data_loader.trg_test[0][2], labeler=None)
print_list = ['trg_test_ema', round(acc_trg_test_ema * 100, 2)]
print(print_list)
def compute_value(self, fn_batch_ema_acc, tag, x_full, y, labeler, full=True):
with tb.nputils.FixedSeed(0):
shuffle = np.random.permutation(len(x_full))
xs = x_full[shuffle]
ys = y[shuffle] if y is not None else None
if not full:
xs = xs[:1000]
ys = ys[:1000] if ys is not None else None
n = len(xs)
bs = 200
acc_full = np.ones(n, dtype=float)
for i in range(0, n, bs):
x = xs[i:i + bs]
y = ys[i:i + bs] if ys is not None else labeler(x)
acc_batch = fn_batch_ema_acc(x, y)
acc_full[i:i + bs] = acc_batch
acc = np.mean(acc_full)
summary = tf.Summary.Value(tag=tag, simple_value=acc)
summary = tf.Summary(value=[summary])
return acc, summary