-
Notifications
You must be signed in to change notification settings - Fork 18
/
adagan_cifar.py
200 lines (184 loc) · 7.62 KB
/
adagan_cifar.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
# Copyright 2017 Max Planck Society
# Distributed under the BSD-3 Software license,
# (See accompanying file ./LICENSE.txt or copy at
# https://opensource.org/licenses/BSD-3-Clause)
"""Training AdaGAN on various datasets.
Refer to the arXiv paper 'AdaGAN: Boosting Generative Models'
Coded by Ilya Tolstikhin, Carl-Johann Simon-Gabriel
"""
import os
import argparse
import logging
import tensorflow as tf
import numpy as np
from datahandler import DataHandler
from adagan import AdaGan
from metrics import Metrics
import utils
flags = tf.app.flags
flags.DEFINE_float("g_learning_rate", 0.0002,
"Learning rate for Generator optimizers [16e-4]")
flags.DEFINE_float("d_learning_rate", 0.0001,
"Learning rate for Discriminator optimizers [4e-4]")
flags.DEFINE_float("learning_rate", 0.003,
"Learning rate for other optimizers [8e-4]")
flags.DEFINE_float("adam_beta1", 0.5, "Beta1 parameter for Adam optimizer [0.5]")
flags.DEFINE_integer("zdim", 50, "Dimensionality of the latent space [100]")
flags.DEFINE_float("init_std", 0.01, "Initial variance for weights [0.02]")
flags.DEFINE_string("workdir", 'results_cifar10_pot_conv', "Working directory ['results']")
flags.DEFINE_bool("unrolled", False, "Use unrolled GAN training [True]")
flags.DEFINE_bool("vae", False, "Use VAE instead of GAN")
flags.DEFINE_bool("pot", True, "Use POT instead of GAN")
flags.DEFINE_float("pot_lambda", 1., "POT regularization")
flags.DEFINE_bool("is_bagging", False, "Do we want to use bagging instead of adagan? [False]")
FLAGS = flags.FLAGS
def main():
opts = {}
# Utility
opts['random_seed'] = 66
opts['dataset'] = 'cifar10' # gmm, circle_gmm, mnist, mnist3 ...
opts['data_dir'] = 'cifar10'
opts['trained_model_path'] = None #'models'
opts['mnist_trained_model_file'] = None #'mnist_trainSteps_19999_yhat' # 'mnist_trainSteps_20000'
opts['work_dir'] = FLAGS.workdir
opts['ckpt_dir'] = 'checkpoints'
opts["verbose"] = 1
opts['tf_run_batch_size'] = 128
opts["early_stop"] = -1 # set -1 to run normally
opts["plot_every"] = 150
opts["save_every_epoch"] = 10
opts['gmm_max_val'] = 15.
# Datasets
opts['toy_dataset_size'] = 10000
opts['toy_dataset_dim'] = 2
opts['mnist3_dataset_size'] = 2 * 64 # 64 * 2500
opts['mnist3_to_channels'] = False # Hide 3 digits of MNIST to channels
opts['input_normalize_sym'] = False # Normalize data to [-1, 1]
opts['gmm_modes_num'] = 5
# AdaGAN parameters
opts['adagan_steps_total'] = 1
opts['samples_per_component'] = 1000
opts['is_bagging'] = FLAGS.is_bagging
opts['beta_heur'] = 'uniform' # uniform, constant
opts['weights_heur'] = 'theory_star' # theory_star, theory_dagger, topk
opts['beta_constant'] = 0.5
opts['topk_constant'] = 0.5
opts["mixture_c_epoch_num"] = 5
opts["eval_points_num"] = 25600
opts['digit_classification_threshold'] = 0.999
opts['inverse_metric'] = False # Use metric from the Unrolled GAN paper?
opts['inverse_num'] = 100 # Number of real points to inverse.
opts['objective'] = None
# Generative model parameters
opts["init_std"] = FLAGS.init_std
opts["init_bias"] = 0.0
opts['latent_space_distr'] = 'normal' # uniform, normal
opts['latent_space_dim'] = FLAGS.zdim
opts["gan_epoch_num"] = 200
opts['convolutions'] = True
opts['d_num_filters'] = 512
opts['d_num_layers'] = 4
opts['g_num_filters'] = 1024
opts['g_num_layers'] = 3
opts['e_is_random'] = False
opts['e_num_filters'] = 1024
opts['e_num_layers'] = 3
opts['g_arch'] = 'dcgan_mod'
opts['g_stride1_deconv'] = False
opts['g_3x3_conv'] = 0
opts['e_arch'] = 'dcgan'
opts['e_3x3_conv'] = 0
opts['conv_filters_dim'] = 5
# --GAN specific:
opts['conditional'] = False
opts['unrolled'] = FLAGS.unrolled # Use Unrolled GAN? (only for images)
opts['unrolling_steps'] = 5 # Used only if unrolled = True
# --VAE specific
opts['vae'] = FLAGS.vae
opts['vae_sigma'] = 0.01
# --POT specific
opts['pot'] = FLAGS.pot
opts['pot_pz_std'] = 2.
opts['pot_lambda'] = FLAGS.pot_lambda
opts['adv_c_loss'] = 'none'
opts['vgg_layer'] = 'pool2'
opts['adv_c_patches_size'] = 5
opts['adv_c_num_units'] = 32
opts['adv_c_loss_w'] = 0.0
opts['cross_p_w'] = 0.0
opts['diag_p_w'] = 0.0
opts['emb_c_loss_w'] = 0.0
opts['reconstr_w'] = 1.0
opts['z_test'] = 'gan'
opts['z_test_corr_w'] = 0.1
opts['z_test_proj_dim'] = 50
# Optimizer parameters
opts['optimizer'] = 'adam' # sgd, adam
opts["batch_size"] = 100
opts["d_steps"] = 1
opts['d_new_minibatch'] = False
opts["g_steps"] = 2
opts['batch_norm'] = True
opts['dropout'] = True
opts['dropout_keep_prob'] = 0.5
opts['recon_loss'] = 'l2'
# "manual" or number (float or int) giving the number of epochs to divide
# the learning rate by 10 (converted into an exp decay per epoch).
opts['decay_schedule'] = 100
opts['opt_learning_rate'] = FLAGS.learning_rate
opts['opt_d_learning_rate'] = FLAGS.d_learning_rate
opts['opt_g_learning_rate'] = FLAGS.g_learning_rate
opts["opt_beta1"] = FLAGS.adam_beta1
opts['batch_norm_eps'] = 1e-05
opts['batch_norm_decay'] = 0.9
if opts['e_is_random']:
assert opts['latent_space_distr'] == 'normal',\
'Random encoders currently work only with Gaussian Pz'
# Data augmentation
opts['data_augm'] = False
if opts['verbose']:
logging.basicConfig(level=logging.DEBUG, format='%(asctime)s - %(message)s')
logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(message)s')
utils.create_dir(opts['work_dir'])
utils.create_dir(os.path.join(opts['work_dir'], opts['ckpt_dir']))
with utils.o_gfile((opts['work_dir'], 'params.txt'), 'w') as text:
text.write('Parameters:\n')
for key in opts:
text.write('%s : %s\n' % (key, opts[key]))
data = DataHandler(opts)
assert data.num_points >= opts['batch_size'], 'Training set too small'
adagan = AdaGan(opts, data)
metrics = Metrics()
train_size = data.num_points
random_idx = np.random.choice(train_size, 4*320, replace=False)
metrics.make_plots(opts, 0, data.data,
data.data[random_idx], adagan._data_weights, prefix='dataset_')
for step in range(opts["adagan_steps_total"]):
logging.info('Running step {} of AdaGAN'.format(step + 1))
adagan.make_step(opts, data)
num_fake = opts['eval_points_num']
logging.debug('Sampling fake points')
fake_points = adagan.sample_mixture(num_fake)
logging.debug('Sampling more fake points')
more_fake_points = adagan.sample_mixture(500)
logging.debug('Plotting results')
if opts['dataset'] == 'gmm':
metrics.make_plots(opts, step, data.data[:500],
fake_points[0:100], adagan._data_weights[:500])
logging.debug('Evaluating results')
(likelihood, C) = metrics.evaluate(
opts, step, data.data[:500],
fake_points, more_fake_points, prefix='')
else:
metrics.make_plots(opts, step, data.data,
fake_points[:320], adagan._data_weights)
if opts['inverse_metric']:
logging.debug('Evaluating results')
l2 = np.min(adagan._invert_losses[:step + 1], axis=0)
logging.debug('MSE=%.5f, STD=%.5f' % (np.mean(l2), np.std(l2)))
res = metrics.evaluate(
opts, step, data.data[:500],
fake_points, more_fake_points, prefix='')
logging.debug("AdaGan finished working!")
if __name__ == '__main__':
main()