def main(FLAGS):
encoder = Encoder(style_dim=FLAGS.style_dim, class_dim=FLAGS.class_dim)
encoder.apply(weights_init)
decoder = Decoder(style_dim=FLAGS.style_dim, class_dim=FLAGS.class_dim)
decoder.apply(weights_init)
# load saved models if load_saved flag is true
if FLAGS.load_saved:
encoder.load_state_dict(
torch.load(os.path.join('checkpoints', FLAGS.encoder_save)))
decoder.load_state_dict(
torch.load(os.path.join('checkpoints', FLAGS.decoder_save)))
device = 'cuda:0'
decoder.to(device)
encoder.to(device)
tsne = TSNE(2)
mnist = DataLoader(
datasets.MNIST(root='mnist',
download=True,
train=False,
transform=transform_config))
s_dict = {}
with torch.no_grad():
for i, (image, label) in enumerate(mnist):
label = int(label)
print(i, label)
style_mu_1, style_logvar_1, class_latent_space_1 = encoder(
image.to(device))
s_dict.setdefault(label, []).append(class_latent_space_1)
s_all = []
for label in range(10):
s_all.extend(s_dict[label])
s_all = torch.cat(s_all)
s_all = s_all.view(s_all.shape[0], -1).cpu()
s_2d = tsne.fit_transform(s_all)
np.savez('s_2d.npz', s_2d=s_2d)
parser.add_argument("--device", default="cuda", help="device: cuda | cpu")
parser.add_argument("--G_path", default="ckpts/G_epoch19.pt", help="path to trained state dict of generator")
parser.add_argument("--D_path", default="ckpts/D_epoch19.pt", help="path to trained state dict of discriminator")
opt = parser.parse_args()
print(opt)
img_shape = (opt.channels, opt.img_size, opt.img_size)
generator = Generator(dim = 64, zdim=opt.latent_dim, nc=opt.channels)
discriminator = Discriminator(dim = 64, zdim=opt.latent_dim, nc=opt.channels,out_feat=True)
encoder = Encoder(dim = 64, zdim=opt.latent_dim, nc=opt.channels)
generator.load_state_dict(torch.load(opt.G_path))
discriminator.load_state_dict(torch.load(opt.D_path))
generator.to(opt.device)
encoder.to(opt.device)
discriminator.to(opt.device)
encoder.train()
discriminator.train()
dataloader = load_data(opt)
generator.eval()
Tensor = torch.cuda.FloatTensor if opt.device == 'cuda' else torch.FloatTensor
optimizer_E = torch.optim.Adam(encoder.parameters(), lr=opt.lr, betas=(opt.b1, opt.b2))
optimizer_D = torch.optim.Adam(discriminator.parameters(), lr=opt.lr, betas=(opt.b1, opt.b2))
max_auc = 0
def training_procedure(FLAGS):
"""
model definition
"""
encoder = Encoder(style_dim=FLAGS.style_dim, class_dim=FLAGS.class_dim)
encoder.apply(weights_init)
decoder = Decoder(style_dim=FLAGS.style_dim, class_dim=FLAGS.class_dim)
decoder.apply(weights_init)
# load saved models if load_saved flag is true
if FLAGS.load_saved:
encoder.load_state_dict(
torch.load(os.path.join('checkpoints', FLAGS.encoder_save)))
decoder.load_state_dict(
torch.load(os.path.join('checkpoints', FLAGS.decoder_save)))
"""
variable definition
"""
X = torch.FloatTensor(FLAGS.batch_size, 784)
'''
run on GPU if GPU is available
'''
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
encoder.to(device=device)
decoder.to(device=device)
X = X.to(device=device)
"""
optimizer definition
"""
auto_encoder_optimizer = optim.Adam(list(encoder.parameters()) +
list(decoder.parameters()),
lr=FLAGS.initial_learning_rate,
betas=(FLAGS.beta_1, FLAGS.beta_2))
"""
"""
if torch.cuda.is_available() and not FLAGS.cuda:
print(
"WARNING: You have a CUDA device, so you should probably run with --cuda"
)
if not os.path.exists('checkpoints'):
os.makedirs('checkpoints')
# load_saved is false when training is started from 0th iteration
if not FLAGS.load_saved:
with open(FLAGS.log_file, 'w') as log:
log.write(
'Epoch\tIteration\tReconstruction_loss\tStyle_KL_divergence_loss\tClass_KL_divergence_loss\n'
)
# load data set and create data loader instance
dirs = os.listdir(os.path.join(os.getcwd(), 'data'))
print('Loading double multivariate normal time series data...')
for dsname in dirs:
params = dsname.split('_')
if params[2] in ('theta=-1'):
print('Running dataset ', dsname)
ds = DoubleMulNormal(dsname)
# ds = experiment3(1000, 50, 3)
loader = cycle(
DataLoader(ds,
batch_size=FLAGS.batch_size,
shuffle=True,
drop_last=True))
# initialize summary writer
writer = SummaryWriter()
for epoch in range(FLAGS.start_epoch, FLAGS.end_epoch):
print()
print(
'Epoch #' + str(epoch) +
'........................................................')
# the total loss at each epoch after running iterations of batches
total_loss = 0
for iteration in range(int(len(ds) / FLAGS.batch_size)):
# load a mini-batch
image_batch, labels_batch = next(loader)
# set zero_grad for the optimizer
auto_encoder_optimizer.zero_grad()
X.copy_(image_batch)
style_mu, style_logvar, class_mu, class_logvar = encoder(
Variable(X))
grouped_mu, grouped_logvar = accumulate_group_evidence(
class_mu.data, class_logvar.data, labels_batch,
FLAGS.cuda)
# kl-divergence error for style latent space
style_kl_divergence_loss = FLAGS.kl_divergence_coef * (
-0.5 * torch.sum(1 + style_logvar - style_mu.pow(2) -
style_logvar.exp()))
style_kl_divergence_loss /= (FLAGS.batch_size *
FLAGS.num_channels *
FLAGS.image_size *
FLAGS.image_size)
style_kl_divergence_loss.backward(retain_graph=True)
# kl-divergence error for class latent space
class_kl_divergence_loss = FLAGS.kl_divergence_coef * (
-0.5 *
torch.sum(1 + grouped_logvar - grouped_mu.pow(2) -
grouped_logvar.exp()))
class_kl_divergence_loss /= (FLAGS.batch_size *
FLAGS.num_channels *
FLAGS.image_size *
FLAGS.image_size)
class_kl_divergence_loss.backward(retain_graph=True)
# reconstruct samples
"""
sampling from group mu and logvar for each image in mini-batch differently makes
the decoder consider class latent embeddings as random noise and ignore them
"""
style_latent_embeddings = reparameterize(
training=True, mu=style_mu, logvar=style_logvar)
class_latent_embeddings = group_wise_reparameterize(
training=True,
mu=grouped_mu,
logvar=grouped_logvar,
labels_batch=labels_batch,
cuda=FLAGS.cuda)
reconstructed_images = decoder(style_latent_embeddings,
class_latent_embeddings)
reconstruction_error = FLAGS.reconstruction_coef * mse_loss(
reconstructed_images, Variable(X))
reconstruction_error.backward()
total_loss += style_kl_divergence_loss + class_kl_divergence_loss + reconstruction_error
auto_encoder_optimizer.step()
if (iteration + 1) % 50 == 0:
print('\tIteration #' + str(iteration))
print('Reconstruction loss: ' + str(
reconstruction_error.data.storage().tolist()[0]))
print('Style KL loss: ' +
str(style_kl_divergence_loss.data.storage().
tolist()[0]))
print('Class KL loss: ' +
str(class_kl_divergence_loss.data.storage().
tolist()[0]))
# write to log
with open(FLAGS.log_file, 'a') as log:
log.write('{0}\t{1}\t{2}\t{3}\t{4}\n'.format(
epoch, iteration,
reconstruction_error.data.storage().tolist()[0],
style_kl_divergence_loss.data.storage().tolist()
[0],
class_kl_divergence_loss.data.storage().tolist()
[0]))
# write to tensorboard
writer.add_scalar(
'Reconstruction loss',
reconstruction_error.data.storage().tolist()[0],
epoch * (int(len(ds) / FLAGS.batch_size) + 1) +
iteration)
writer.add_scalar(
'Style KL-Divergence loss',
style_kl_divergence_loss.data.storage().tolist()[0],
epoch * (int(len(ds) / FLAGS.batch_size) + 1) +
iteration)
writer.add_scalar(
'Class KL-Divergence loss',
class_kl_divergence_loss.data.storage().tolist()[0],
epoch * (int(len(ds) / FLAGS.batch_size) + 1) +
iteration)
if epoch == 0 and (iteration + 1) % 50 == 0:
torch.save(
encoder.state_dict(),
os.path.join('checkpoints', 'encoder_' + dsname))
torch.save(
decoder.state_dict(),
os.path.join('checkpoints', 'decoder_' + dsname))
# save checkpoints after every 10 epochs
if (epoch + 1) % 10 == 0 or (epoch + 1) == FLAGS.end_epoch:
torch.save(
encoder.state_dict(),
os.path.join('checkpoints', 'encoder_' + dsname))
torch.save(
decoder.state_dict(),
os.path.join('checkpoints', 'decoder_' + dsname))
print('Total loss at current epoch: ', total_loss.item())
def test(opt):
#### mkdir
des_pth = os.path.join('results', opt.name)
if os.path.exists(os.path.join(des_pth)) is not True:
os.mkdir(des_pth)
src_pth = os.path.join(opt.checkpoints, opt.name)
models_name = os.listdir(src_pth)
models_name.remove('images')
models_name.remove('records.txt')
models_name.sort(key=lambda x: int(x[6:9]))
target = int(models_name[-1][6:9])
#### device
device = torch.device('cuda:{}'.format(opt.gpu_id) if opt.gpu_id >= 0 else torch.device('cpu'))
#### data
data_loader = UnAlignedDataLoader()
data_loader.initialize(opt)
data_set = data_loader.load_data()
#### networks
## initialize
E_a2b = Encoder(input_nc=opt.input_nc, ngf=opt.ngf, norm_type=opt.norm_type, use_dropout=not opt.no_dropout, n_blocks=9)
G_b = Decoder(output_nc=opt.output_nc, ngf=opt.ngf, norm_type=opt.norm_type)
E_b2a = Encoder(input_nc=opt.input_nc, ngf=opt.ngf, norm_type=opt.norm_type, use_dropout=not opt.no_dropout, n_blocks=9)
G_a = Decoder(output_nc=opt.output_nc, ngf=opt.ngf, norm_type=opt.norm_type)
## load in models
E_a2b.load_state_dict(torch.load(os.path.join(src_pth, 'epoch_%3d-E_a2b.pth'%target)))
G_b.load_state_dict(torch.load(os.path.join(src_pth, 'epoch_%3d-G_b.pth'%target)))
E_b2a.load_state_dict(torch.load(os.path.join(src_pth, 'epoch_%3d-E_b2a.pth' % target)))
G_a.load_state_dict(torch.load(os.path.join(src_pth, 'epoch_%3d-G_a.pth' % target)))
E_a2b = E_a2b.to(device)
G_b = G_b.to(device)
E_b2a = E_b2a.to(device)
G_a = G_a.to(device)
for i, data in enumerate(data_set):
real_A = data['A'].to(device)
real_B = data['B'].to(device)
fake_B = G_b(E_a2b(real_A))
fake_A = G_a(E_b2a(real_B))
## visualize
if opt.gpu_id >= 0:
fake_B = fake_B.cpu().data
fake_A = fake_A.cpu().data
real_A = real_A.cpu()
real_B = real_B.cpu()
for j in range(opt.batch_size):
fake_b = tensor2image_RGB(fake_B[j, ...])
fake_a = tensor2image_RGB(fake_A[j, ...])
real_a = tensor2image_RGB(real_A[j, ...])
real_b = tensor2image_RGB(real_B[j, ...])
plt.subplot(221), plt.title("real_A"), plt.imshow(real_a)
plt.subplot(222), plt.title("fake_B"), plt.imshow(fake_b)
plt.subplot(223), plt.title("real_B"), plt.imshow(real_b)
plt.subplot(224), plt.title("fake_A"), plt.imshow(fake_a)
plt.savefig(os.path.join(des_pth, '%06d-%02d.jpg'%(i, j)))
#break #-> debug
print("≧◔◡◔≦ Congratulation! Successfully finishing the testing!")
def train(opt):
#### device
device = torch.device('cuda:{}'.format(opt.gpu_id)
if opt.gpu_id >= 0 else torch.device('cpu'))
#### dataset
data_loader = UnAlignedDataLoader()
data_loader.initialize(opt)
data_set = data_loader.load_data()
print("The number of training images = %d." % len(data_set))
#### initialize models
## declaration
E_a2Zb = Encoder(input_nc=opt.input_nc,
ngf=opt.ngf,
norm_type=opt.norm_type,
use_dropout=not opt.no_dropout,
n_blocks=9)
G_Zb2b = Decoder(output_nc=opt.output_nc,
ngf=opt.ngf,
norm_type=opt.norm_type)
T_Zb2Za = LatentTranslator(n_channels=256,
norm_type=opt.norm_type,
use_dropout=not opt.no_dropout)
D_b = Discriminator(input_nc=opt.input_nc,
ndf=opt.ndf,
n_layers=opt.n_layers,
norm_type=opt.norm_type)
E_b2Za = Encoder(input_nc=opt.input_nc,
ngf=opt.ngf,
norm_type=opt.norm_type,
use_dropout=not opt.no_dropout,
n_blocks=9)
G_Za2a = Decoder(output_nc=opt.output_nc,
ngf=opt.ngf,
norm_type=opt.norm_type)
T_Za2Zb = LatentTranslator(n_channels=256,
norm_type=opt.norm_type,
use_dropout=not opt.no_dropout)
D_a = Discriminator(input_nc=opt.input_nc,
ndf=opt.ndf,
n_layers=opt.n_layers,
norm_type=opt.norm_type)
## initialization
E_a2Zb = init_net(E_a2Zb, init_type=opt.init_type).to(device)
G_Zb2b = init_net(G_Zb2b, init_type=opt.init_type).to(device)
T_Zb2Za = init_net(T_Zb2Za, init_type=opt.init_type).to(device)
D_b = init_net(D_b, init_type=opt.init_type).to(device)
E_b2Za = init_net(E_b2Za, init_type=opt.init_type).to(device)
G_Za2a = init_net(G_Za2a, init_type=opt.init_type).to(device)
T_Za2Zb = init_net(T_Za2Zb, init_type=opt.init_type).to(device)
D_a = init_net(D_a, init_type=opt.init_type).to(device)
print(
"+------------------------------------------------------+\nFinish initializing networks."
)
#### optimizer and criterion
## criterion
criterionGAN = GANLoss(opt.gan_mode).to(device)
criterionZId = nn.L1Loss()
criterionIdt = nn.L1Loss()
criterionCTC = nn.L1Loss()
criterionZCyc = nn.L1Loss()
## optimizer
optimizer_G = torch.optim.Adam(itertools.chain(E_a2Zb.parameters(),
G_Zb2b.parameters(),
T_Zb2Za.parameters(),
E_b2Za.parameters(),
G_Za2a.parameters(),
T_Za2Zb.parameters()),
lr=opt.lr,
betas=(opt.beta1, opt.beta2))
optimizer_D = torch.optim.Adam(itertools.chain(D_a.parameters(),
D_b.parameters()),
lr=opt.lr,
betas=(opt.beta1, opt.beta2))
## scheduler
scheduler = [
get_scheduler(optimizer_G, opt),
get_scheduler(optimizer_D, opt)
]
print(
"+------------------------------------------------------+\nFinish initializing the optimizers and criterions."
)
#### global variables
checkpoints_pth = os.path.join(opt.checkpoints, opt.name)
if os.path.exists(checkpoints_pth) is not True:
os.mkdir(checkpoints_pth)
os.mkdir(os.path.join(checkpoints_pth, 'images'))
record_fh = open(os.path.join(checkpoints_pth, 'records.txt'),
'w',
encoding='utf-8')
loss_names = [
'GAN_A', 'Adv_A', 'Idt_A', 'CTC_A', 'ZId_A', 'ZCyc_A', 'GAN_B',
'Adv_B', 'Idt_B', 'CTC_B', 'ZId_B', 'ZCyc_B'
]
fake_A_pool = ImagePool(
opt.pool_size
) # create image buffer to store previously generated images
fake_B_pool = ImagePool(
opt.pool_size
) # create image buffer to store previously generated images
print(
"+------------------------------------------------------+\nFinish preparing the other works."
)
print(
"+------------------------------------------------------+\nNow training is beginning .."
)
#### training
cur_iter = 0
for epoch in range(opt.epoch_count, opt.niter + opt.niter_decay + 1):
epoch_start_time = time.time() # timer for entire epoch
for i, data in enumerate(data_set):
## setup inputs
real_A = data['A'].to(device)
real_B = data['B'].to(device)
## forward
# image cycle / GAN
latent_B = E_a2Zb(real_A) #-> a -> Zb : E_a2b(a)
fake_B = G_Zb2b(latent_B) #-> Zb -> b' : G_b(E_a2b(a))
latent_A = E_b2Za(real_B) #-> b -> Za : E_b2a(b)
fake_A = G_Za2a(latent_A) #-> Za -> a' : G_a(E_b2a(b))
# Idt
'''
rec_A = G_Za2a(E_b2Za(fake_B)) #-> b' -> Za' -> rec_a : G_a(E_b2a(fake_b))
rec_B = G_Zb2b(E_a2Zb(fake_A)) #-> a' -> Zb' -> rec_b : G_b(E_a2b(fake_a))
'''
idt_latent_A = E_b2Za(real_A) #-> a -> Za : E_b2a(a)
idt_A = G_Za2a(idt_latent_A) #-> Za -> idt_a : G_a(E_b2a(a))
idt_latent_B = E_a2Zb(real_B) #-> b -> Zb : E_a2b(b)
idt_B = G_Zb2b(idt_latent_B) #-> Zb -> idt_b : G_b(E_a2b(b))
# ZIdt
T_latent_A = T_Zb2Za(latent_B) #-> Zb -> Za'' : T_b2a(E_a2b(a))
T_rec_A = G_Za2a(
T_latent_A) #-> Za'' -> a'' : G_a(T_b2a(E_a2b(a)))
T_latent_B = T_Za2Zb(latent_A) #-> Za -> Zb'' : T_a2b(E_b2a(b))
T_rec_B = G_Zb2b(
T_latent_B) #-> Zb'' -> b'' : G_b(T_a2b(E_b2a(b)))
# CTC
T_idt_latent_B = T_Za2Zb(idt_latent_A) #-> a -> T_a2b(E_b2a(a))
T_idt_latent_A = T_Zb2Za(idt_latent_B) #-> b -> T_b2a(E_a2b(b))
# ZCyc
TT_latent_B = T_Za2Zb(T_latent_A) #-> T_a2b(T_b2a(E_a2b(a)))
TT_latent_A = T_Zb2Za(T_latent_B) #-> T_b2a(T_a2b(E_b2a(b)))
### optimize parameters
## Generator updating
set_requires_grad(
[D_b, D_a],
False) #-> set Discriminator to require no gradient
optimizer_G.zero_grad()
# GAN loss
loss_G_A = criterionGAN(D_b(fake_B), True)
loss_G_B = criterionGAN(D_a(fake_A), True)
loss_GAN = loss_G_A + loss_G_B
# Idt loss
loss_idt_A = criterionIdt(idt_A, real_A)
loss_idt_B = criterionIdt(idt_B, real_B)
loss_Idt = loss_idt_A + loss_idt_B
# Latent cross-identity loss
loss_Zid_A = criterionZId(T_rec_A, real_A)
loss_Zid_B = criterionZId(T_rec_B, real_B)
loss_Zid = loss_Zid_A + loss_Zid_B
# Latent cross-translation consistency
loss_CTC_A = criterionCTC(T_idt_latent_A, latent_A)
loss_CTC_B = criterionCTC(T_idt_latent_B, latent_B)
loss_CTC = loss_CTC_B + loss_CTC_A
# Latent cycle consistency
loss_ZCyc_A = criterionZCyc(TT_latent_A, latent_A)
loss_ZCyc_B = criterionZCyc(TT_latent_B, latent_B)
loss_ZCyc = loss_ZCyc_B + loss_ZCyc_A
loss_G = opt.lambda_gan * loss_GAN + opt.lambda_idt * loss_Idt + opt.lambda_zid * loss_Zid + opt.lambda_ctc * loss_CTC + opt.lambda_zcyc * loss_ZCyc
# backward and gradient updating
loss_G.backward()
optimizer_G.step()
## Discriminator updating
set_requires_grad([D_b, D_a],
True) # -> set Discriminator to require gradient
optimizer_D.zero_grad()
# backward D_b
fake_B_ = fake_B_pool.query(fake_B)
#-> real_B, fake_B
pred_real_B = D_b(real_B)
loss_D_real_B = criterionGAN(pred_real_B, True)
pred_fake_B = D_b(fake_B_)
loss_D_fake_B = criterionGAN(pred_fake_B, False)
loss_D_B = (loss_D_real_B + loss_D_fake_B) * 0.5
loss_D_B.backward()
# backward D_a
fake_A_ = fake_A_pool.query(fake_A)
#-> real_A, fake_A
pred_real_A = D_a(real_A)
loss_D_real_A = criterionGAN(pred_real_A, True)
pred_fake_A = D_a(fake_A_)
loss_D_fake_A = criterionGAN(pred_fake_A, False)
loss_D_A = (loss_D_real_A + loss_D_fake_A) * 0.5
loss_D_A.backward()
# update the gradients
optimizer_D.step()
### validate here, both qualitively and quantitatively
## record the losses
if cur_iter % opt.log_freq == 0:
# loss_names = ['GAN_A', 'Adv_A', 'Idt_A', 'CTC_A', 'ZId_A', 'ZCyc_A', 'GAN_B', 'Adv_B', 'Idt_B', 'CTC_B', 'ZId_B', 'ZCyc_B']
losses = [
loss_G_A.item(),
loss_D_A.item(),
loss_idt_A.item(),
loss_CTC_A.item(),
loss_Zid_A.item(),
loss_ZCyc_A.item(),
loss_G_B.item(),
loss_D_B.item(),
loss_idt_B.item(),
loss_CTC_B.item(),
loss_Zid_B.item(),
loss_ZCyc_B.item()
]
# record
line = ''
for loss in losses:
line += '{} '.format(loss)
record_fh.write(line[:-1] + '\n')
# print out
print('Epoch: %3d/%3dIter: %9d--------------------------+' %
(epoch, opt.epoch, i))
field_names = loss_names[:len(loss_names) // 2]
table = PrettyTable(field_names=field_names)
for l_n in field_names:
table.align[l_n] = 'm'
table.add_row(losses[:len(field_names)])
print(table.get_string(reversesort=True))
field_names = loss_names[len(loss_names) // 2:]
table = PrettyTable(field_names=field_names)
for l_n in field_names:
table.align[l_n] = 'm'
table.add_row(losses[-len(field_names):])
print(table.get_string(reversesort=True))
## visualize
if cur_iter % opt.vis_freq == 0:
if opt.gpu_id >= 0:
real_A = real_A.cpu().data
real_B = real_B.cpu().data
fake_A = fake_A.cpu().data
fake_B = fake_B.cpu().data
idt_A = idt_A.cpu().data
idt_B = idt_B.cpu().data
T_rec_A = T_rec_A.cpu().data
T_rec_B = T_rec_B.cpu().data
plt.subplot(241), plt.title('real_A'), plt.imshow(
tensor2image_RGB(real_A[0, ...]))
plt.subplot(242), plt.title('fake_B'), plt.imshow(
tensor2image_RGB(fake_B[0, ...]))
plt.subplot(243), plt.title('idt_A'), plt.imshow(
tensor2image_RGB(idt_A[0, ...]))
plt.subplot(244), plt.title('L_idt_A'), plt.imshow(
tensor2image_RGB(T_rec_A[0, ...]))
plt.subplot(245), plt.title('real_B'), plt.imshow(
tensor2image_RGB(real_B[0, ...]))
plt.subplot(246), plt.title('fake_A'), plt.imshow(
tensor2image_RGB(fake_A[0, ...]))
plt.subplot(247), plt.title('idt_B'), plt.imshow(
tensor2image_RGB(idt_B[0, ...]))
plt.subplot(248), plt.title('L_idt_B'), plt.imshow(
tensor2image_RGB(T_rec_B[0, ...]))
plt.savefig(
os.path.join(checkpoints_pth, 'images',
'%03d_%09d.jpg' % (epoch, i)))
cur_iter += 1
#break #-> debug
## till now, we finish one epoch, try to update the learning rate
update_learning_rate(schedulers=scheduler,
opt=opt,
optimizer=optimizer_D)
## save the model
if epoch % opt.ckp_freq == 0:
#-> save models
# torch.save(model.state_dict(), PATH)
#-> load in models
# model.load_state_dict(torch.load(PATH))
# model.eval()
if opt.gpu_id >= 0:
E_a2Zb = E_a2Zb.cpu()
G_Zb2b = G_Zb2b.cpu()
T_Zb2Za = T_Zb2Za.cpu()
D_b = D_b.cpu()
E_b2Za = E_b2Za.cpu()
G_Za2a = G_Za2a.cpu()
T_Za2Zb = T_Za2Zb.cpu()
D_a = D_a.cpu()
'''
torch.save( E_a2Zb.cpu().state_dict(), os.path.join(checkpoints_pth, 'epoch_%3d-E_a2b.pth' % epoch))
torch.save( G_Zb2b.cpu().state_dict(), os.path.join(checkpoints_pth, 'epoch_%3d-G_b.pth' % epoch))
torch.save(T_Zb2Za.cpu().state_dict(), os.path.join(checkpoints_pth, 'epoch_%3d-T_b2a.pth' % epoch))
torch.save( D_b.cpu().state_dict(), os.path.join(checkpoints_pth, 'epoch_%3d-D_b.pth' % epoch))
torch.save( E_b2Za.cpu().state_dict(), os.path.join(checkpoints_pth, 'epoch_%3d-E_b2a.pth' % epoch))
torch.save( G_Za2a.cpu().state_dict(), os.path.join(checkpoints_pth, 'epoch_%3d-G_a.pth' % epoch))
torch.save(T_Za2Zb.cpu().state_dict(), os.path.join(checkpoints_pth, 'epoch_%3d-T_a2b.pth' % epoch))
torch.save( D_a.cpu().state_dict(), os.path.join(checkpoints_pth, 'epoch_%3d-D_a.pth' % epoch))
'''
torch.save(
E_a2Zb.state_dict(),
os.path.join(checkpoints_pth, 'epoch_%3d-E_a2b.pth' % epoch))
torch.save(
G_Zb2b.state_dict(),
os.path.join(checkpoints_pth, 'epoch_%3d-G_b.pth' % epoch))
torch.save(
T_Zb2Za.state_dict(),
os.path.join(checkpoints_pth, 'epoch_%3d-T_b2a.pth' % epoch))
torch.save(
D_b.state_dict(),
os.path.join(checkpoints_pth, 'epoch_%3d-D_b.pth' % epoch))
torch.save(
E_b2Za.state_dict(),
os.path.join(checkpoints_pth, 'epoch_%3d-E_b2a.pth' % epoch))
torch.save(
G_Za2a.state_dict(),
os.path.join(checkpoints_pth, 'epoch_%3d-G_a.pth' % epoch))
torch.save(
T_Za2Zb.state_dict(),
os.path.join(checkpoints_pth, 'epoch_%3d-T_a2b.pth' % epoch))
torch.save(
D_a.state_dict(),
os.path.join(checkpoints_pth, 'epoch_%3d-D_a.pth' % epoch))
if opt.gpu_id >= 0:
E_a2Zb = E_a2Zb.to(device)
G_Zb2b = G_Zb2b.to(device)
T_Zb2Za = T_Zb2Za.to(device)
D_b = D_b.to(device)
E_b2Za = E_b2Za.to(device)
G_Za2a = G_Za2a.to(device)
T_Za2Zb = T_Za2Zb.to(device)
D_a = D_a.to(device)
print("+Successfully saving models in epoch: %3d.-------------+" %
epoch)
#break #-> debug
record_fh.close()
print("≧◔◡◔≦ Congratulation! Finishing the training!")
dirs = os.listdir(os.path.join(cwd, 'data'))
print('Loading double univariate normal time series test data...')
for dsname in dirs:
params = dsname.split('_')
if params[2] in ('theta=-1'):
# load saved parameters of encoder and decoder
encoder.load_state_dict(
torch.load(os.path.join(cwd, 'checkpoints',
'encoder_' + dsname),
map_location=lambda storage, loc: storage))
decoder.load_state_dict(
torch.load(os.path.join(cwd, 'checkpoints',
'decoder_' + dsname),
map_location=lambda storage, loc: storage))
encoder = encoder.to(device=device)
decoder = decoder.to(device=device)
paired_mnist = DoubleMulNormal(dsname)
loader = cycle(
DataLoader(paired_mnist,
batch_size=FLAGS.batch_size,
shuffle=True,
num_workers=0,
drop_last=True))
test_data = torch.from_numpy(paired_mnist.x_test)
### Would recommend using this pattern
use_gpu = torch.cuda.is_available()
# get the true change points and create list for predicted change points
# Paths
checkpoint_path = join('results', args.experiment_name, 'checkpoint')
test_path = join('results', args.experiment_name, 'sample_val')
os.makedirs(test_path, exist_ok=True)
# Data
if args.dataset == 'COCO-Stuff':
from data import COCO_Stuff
val_dset = COCO_Stuff(args.data, mode='val')
n_classes = COCO_Stuff.n_classes
val_data = data.DataLoader(val_dset, batch_size = args.batch_size, shuffle=False, drop_last=False)
# Models
E = Encoder()
E.to(device)
G = Generator(n_classes)
G.to(device)
if args.multi_gpu: # If trained with multi-GPU, the model needs to be loaded with multi-GPU, too.
E = nn.DataParallel(E)
G = nn.DataParallel(G)
# G = convert_model(G)
# Load from checkpoints
load_epoch = args.test_epoch
if load_epoch is None: # Use the lastest model
load_epoch = max(int(path.split('.')[0]) for path in listdir(checkpoint_path) if path.split('.')[0].isdigit())
print('Loading generator from epoch {:03d}'.format(load_epoch))
E.load_state_dict(torch.load(
join(checkpoint_path, '{:03d}.E.pth'.format(load_epoch)),
