def main(unused_argv):
del unused_argv
# Load Config
config_name = FLAGS.config
config_module = importlib.import_module(configs_module_prefix +
'.%s' % config_name)
config = config_module.config
model_uid = common.get_model_uid(config_name, FLAGS.exp_uid)
batch_size = config['batch_size']
# Load dataset
dataset = common.load_dataset(config)
save_path = dataset.save_path
train_data = dataset.train_data
attr_train = dataset.attr_train
eval_data = dataset.eval_data
attr_eval = dataset.attr_eval
# Make the directory
save_dir = os.path.join(save_path, model_uid)
best_dir = os.path.join(save_dir, 'best')
tf.gfile.MakeDirs(save_dir)
tf.gfile.MakeDirs(best_dir)
tf.logging.info('Save Dir: %s', save_dir)
np.random.seed(FLAGS.random_seed)
# We use `N` in variable name to emphasis its being the Number of something.
N_train = train_data.shape[0] # pylint:disable=invalid-name
N_eval = eval_data.shape[0] # pylint:disable=invalid-name
# Load Model
tf.reset_default_graph()
sess = tf.Session()
m = model_dataspace.Model(config, name=model_uid)
_ = m() # noqa
# Create summaries
tf.summary.scalar('Train_Loss', m.vae_loss)
tf.summary.scalar('Mean_Recon_LL', m.mean_recons)
tf.summary.scalar('Mean_KL', m.mean_KL)
scalar_summaries = tf.summary.merge_all()
x_mean_, x_ = m.x_mean, m.x
if common.dataset_is_mnist_family(config['dataset']):
x_mean_ = tf.reshape(x_mean_, [-1, MNIST_SIZE, MNIST_SIZE, 1])
x_ = tf.reshape(x_, [-1, MNIST_SIZE, MNIST_SIZE, 1])
x_mean_summary = tf.summary.image('Reconstruction',
nn.tf_batch_image(x_mean_),
max_outputs=1)
x_summary = tf.summary.image('Original',
nn.tf_batch_image(x_),
max_outputs=1)
sample_summary = tf.summary.image('Sample',
nn.tf_batch_image(x_mean_),
max_outputs=1)
# Summary writers
train_writer = tf.summary.FileWriter(save_dir + '/vae_train', sess.graph)
eval_writer = tf.summary.FileWriter(save_dir + '/vae_eval', sess.graph)
# Initialize
sess.run(tf.global_variables_initializer())
i_start = 0
running_N_eval = 30 # pylint:disable=invalid-name
traces = {
'i': [],
'i_pred': [],
'loss': [],
'loss_eval': [],
}
best_eval_loss = np.inf
vae_lr_ = np.logspace(np.log10(FLAGS.lr), np.log10(1e-6), FLAGS.n_iters)
# Train the VAE
for i in range(i_start, FLAGS.n_iters):
start = (i * batch_size) % N_train
end = start + batch_size
batch = train_data[start:end]
labels = attr_train[start:end]
# train op
res = sess.run([
m.train_vae, m.vae_loss, m.mean_recons, m.mean_KL, scalar_summaries
], {
m.x: batch,
m.vae_lr: vae_lr_[i],
m.labels: labels,
})
tf.logging.info('Iter: %d, Loss: %d', i, res[1])
train_writer.add_summary(res[-1], i)
if i % FLAGS.n_iters_per_eval == 0:
# write training reconstructions
if batch.shape[0] == batch_size:
res = sess.run([x_summary, x_mean_summary], {
m.x: batch,
m.labels: labels,
})
train_writer.add_summary(res[0], i)
train_writer.add_summary(res[1], i)
# write sample reconstructions
prior_sample = sess.run(m.prior_sample)
res = sess.run([sample_summary], {
m.q_z_sample: prior_sample,
m.labels: labels,
})
train_writer.add_summary(res[0], i)
# write eval summaries
start = (i * batch_size) % N_eval
end = start + batch_size
batch = eval_data[start:end]
labels = attr_eval[start:end]
if batch.shape[0] == batch_size:
res_eval = sess.run([
m.vae_loss, m.mean_recons, m.mean_KL, scalar_summaries,
x_summary, x_mean_summary
], {
m.x: batch,
m.labels: labels,
})
traces['loss_eval'].append(res_eval[0])
eval_writer.add_summary(res_eval[-3], i)
eval_writer.add_summary(res_eval[-2], i)
eval_writer.add_summary(res_eval[-1], i)
if i % FLAGS.n_iters_per_save == 0:
smoothed_eval_loss = np.mean(traces['loss_eval'][-running_N_eval:])
if smoothed_eval_loss < best_eval_loss:
# Save the best model
best_eval_loss = smoothed_eval_loss
save_name = os.path.join(best_dir,
'vae_best_%s.ckpt' % model_uid)
tf.logging.info('SAVING BEST! %s Iter: %d', save_name, i)
m.vae_saver.save(sess, save_name)
with tf.gfile.Open(
os.path.join(best_dir, 'best_ckpt_iters.txt'),
'w') as f:
f.write('%d' % i)
def main(unused_argv):
del unused_argv
# Load Config
config_name = FLAGS.config
config_module = importlib.import_module(configs_module_prefix +
'.%s' % config_name)
config = config_module.config
model_uid = common.get_model_uid(config_name, FLAGS.exp_uid)
batch_size = config['batch_size']
# Load dataset
dataset = common.load_dataset(config)
save_path = dataset.save_path
train_data = dataset.train_data
attr_train = dataset.attr_train
eval_data = dataset.eval_data
attr_eval = dataset.attr_eval
# Make the directory
save_dir = os.path.join(save_path, model_uid)
best_dir = os.path.join(save_dir, 'best')
tf.gfile.MakeDirs(save_dir)
tf.gfile.MakeDirs(best_dir)
tf.logging.info('Save Dir: %s', save_dir)
np.random.seed(FLAGS.random_seed)
# We use `N` in variable name to emphasis its being the Number of something.
N_train = train_data.shape[0] # pylint:disable=invalid-name
N_eval = eval_data.shape[0] # pylint:disable=invalid-name
# Load Model
tf.reset_default_graph()
sess = tf.Session()
m = model_dataspace.Model(config, name=model_uid)
_ = m() # noqa
# Create summaries
tf.summary.scalar('Train_Loss', m.vae_loss)
tf.summary.scalar('Mean_Recon_LL', m.mean_recons)
tf.summary.scalar('Mean_KL', m.mean_KL)
scalar_summaries = tf.summary.merge_all()
x_mean_, x_ = m.x_mean, m.x
if common.dataset_is_mnist_family(config['dataset']):
x_mean_ = tf.reshape(x_mean_, [-1, MNIST_SIZE, MNIST_SIZE, 1])
x_ = tf.reshape(x_, [-1, MNIST_SIZE, MNIST_SIZE, 1])
x_mean_summary = tf.summary.image(
'Reconstruction', nn.tf_batch_image(x_mean_), max_outputs=1)
x_summary = tf.summary.image('Original', nn.tf_batch_image(x_), max_outputs=1)
sample_summary = tf.summary.image(
'Sample', nn.tf_batch_image(x_mean_), max_outputs=1)
# Summary writers
train_writer = tf.summary.FileWriter(save_dir + '/vae_train', sess.graph)
eval_writer = tf.summary.FileWriter(save_dir + '/vae_eval', sess.graph)
# Initialize
sess.run(tf.global_variables_initializer())
i_start = 0
running_N_eval = 30 # pylint:disable=invalid-name
traces = {
'i': [],
'i_pred': [],
'loss': [],
'loss_eval': [],
}
best_eval_loss = np.inf
vae_lr_ = np.logspace(np.log10(FLAGS.lr), np.log10(1e-6), FLAGS.n_iters)
# Train the VAE
for i in range(i_start, FLAGS.n_iters):
start = (i * batch_size) % N_train
end = start + batch_size
batch = train_data[start:end]
labels = attr_train[start:end]
# train op
res = sess.run(
[m.train_vae, m.vae_loss, m.mean_recons, m.mean_KL, scalar_summaries], {
m.x: batch,
m.vae_lr: vae_lr_[i],
m.labels: labels,
})
tf.logging.info('Iter: %d, Loss: %d', i, res[1])
train_writer.add_summary(res[-1], i)
if i % FLAGS.n_iters_per_eval == 0:
# write training reconstructions
if batch.shape[0] == batch_size:
res = sess.run([x_summary, x_mean_summary], {
m.x: batch,
m.labels: labels,
})
train_writer.add_summary(res[0], i)
train_writer.add_summary(res[1], i)
# write sample reconstructions
prior_sample = sess.run(m.prior_sample)
res = sess.run([sample_summary], {
m.q_z_sample: prior_sample,
m.labels: labels,
})
train_writer.add_summary(res[0], i)
# write eval summaries
start = (i * batch_size) % N_eval
end = start + batch_size
batch = eval_data[start:end]
labels = attr_eval[start:end]
if batch.shape[0] == batch_size:
res_eval = sess.run([
m.vae_loss, m.mean_recons, m.mean_KL, scalar_summaries, x_summary,
x_mean_summary
], {
m.x: batch,
m.labels: labels,
})
traces['loss_eval'].append(res_eval[0])
eval_writer.add_summary(res_eval[-3], i)
eval_writer.add_summary(res_eval[-2], i)
eval_writer.add_summary(res_eval[-1], i)
if i % FLAGS.n_iters_per_save == 0:
smoothed_eval_loss = np.mean(traces['loss_eval'][-running_N_eval:])
if smoothed_eval_loss < best_eval_loss:
# Save the best model
best_eval_loss = smoothed_eval_loss
save_name = os.path.join(best_dir, 'vae_best_%s.ckpt' % model_uid)
tf.logging.info('SAVING BEST! %s Iter: %d', save_name, i)
m.vae_saver.save(sess, save_name)
with tf.gfile.Open(os.path.join(best_dir, 'best_ckpt_iters.txt'),
'w') as f:
f.write('%d' % i)
