def load_models(load_path):
model_args = json.load(open(os.path.join(load_path, 'options.json'), 'r'))
vars(args).update(model_args)
autoencoder = Seq2Seq(emsize=args.emsize,
nhidden=args.nhidden,
ntokens=args.ntokens,
nlayers=args.nlayers,
noise_r=args.noise_r,
hidden_init=args.hidden_init,
dropout=args.dropout,
gpu=args.cuda)
gan_gen = MLP_G(ninput=args.z_size,
noutput=args.nhidden,
layers=args.arch_g)
gan_disc = MLP_D(ninput=args.nhidden, noutput=1, layers=args.arch_d)
autoencoder = autoencoder.cuda()
gan_gen = gan_gen.cuda()
gan_disc = gan_disc.cuda()
word2idx = json.load(open(os.path.join(args.save, 'vocab.json'), 'r'))
idx2word = {v: k for k, v in word2idx.items()}
print('Loading models from {}'.format(args.save))
loaded = torch.load(os.path.join(args.save, "model.pt"))
autoencoder.load_state_dict(loaded.get('ae'))
gan_gen.load_state_dict(loaded.get('gan_g'))
gan_disc.load_state_dict(loaded.get('gan_d'))
return model_args, idx2word, autoencoder, gan_gen, gan_disc
###############################################################################
# Build the models
###############################################################################
ntokens = len(corpus.dictionary.word2idx)
autoencoder = Seq2Seq2Decoder(emsize=args.emsize,
nhidden=args.nhidden,
ntokens=ntokens,
nlayers=args.nlayers,
noise_r=args.noise_r,
hidden_init=args.hidden_init,
dropout=args.dropout,
gpu=args.cuda)
gan_gen = MLP_G(ninput=args.z_size, noutput=args.nhidden, layers=args.arch_g)
gan_disc = MLP_D(ninput=args.nhidden, noutput=1, layers=args.arch_d)
classifier = MLP_Classify(ninput=args.nhidden,
noutput=1,
layers=args.arch_classify)
g_factor = None
print(autoencoder)
print(gan_gen)
print(gan_disc)
print(classifier)
optimizer_ae = optim.SGD(autoencoder.parameters(), lr=args.lr_ae)
optimizer_gan_g = optim.Adam(gan_gen.parameters(),
lr=args.lr_gan_g,
betas=(args.beta1, 0.999))
ngf = int(opt.ngf)
ndf = int(opt.ndf)
nc = 1 #By default our data has only one channel
niter = int(opt.niter)
Diters = int(opt.Diters)
workers = int(opt.workers)
lambda_ = int(opt.lambda_)
cuda = opt.cuda
#datapath='../../../../../'
#f = h5py.File(opt.datapath+'fields_z='+opt.redshift+'.hdf5', 'r')
#f = f['delta_HI']
if opt.MLP == True:
netG = MLP_G(s_sample, nz, nc, ngf, ngpu)
netD = MLP_D(s_sample, nz, nc, ngf, ngpu)
else:
netG = DCGAN_G(s_sample, nz, nc, ngf, ngpu)
netD = DCGAN_D(s_sample, nz, nc, ndf, ngpu)
#experiments/ch128_lr0005_tanh/netD_epoch_47.pth
epoch_load = opt.epoch_st - 1
wass_loss = []
if opt.load_weights == True:
netG.load_state_dict(
torch.load(opt.experiment + 'netG_epoch_' + str(epoch_load) +
'.pth'))
netD.load_state_dict(
###############################################################################
# Build the models
###############################################################################
ntokens = len(corpus.dictionary.word2idx)
autoencoder = Seq2Seq(emsize=emsize,
nhidden=nhidden,
ntokens=ntokens,
nlayers=nlayers,
noise_radius=noise_radius,
hidden_init=False,
dropout=dropout,
gpu=cuda)
gan_gen = MLP_G(ninput=z_size, noutput=nhidden, layers=arch_g)
gan_disc = MLP_D(ninput=nhidden, noutput=1, layers=arch_d)
#1204delete
#print(autoencoder)
#print(gan_gen)
#print(gan_disc)
optimizer_ae = optim.SGD(autoencoder.parameters(), lr=lr_ae)
optimizer_gan_g = optim.Adam(gan_gen.parameters(),
lr=lr_gan_g,
betas=(beta1, 0.999))
optimizer_gan_d = optim.Adam(gan_disc.parameters(),
lr=lr_gan_d,
betas=(beta1, 0.999))
###############################################################################
# Build the models
###############################################################################
ntokens = len(corpus.dictionary.word2idx)
autoencoder = Seq2Seq2Decoder(emsize=args.emsize,
nhidden=args.nhidden,
ntokens=ntokens,
nlayers=args.nlayers,
noise_r=args.noise_r,
hidden_init=args.hidden_init,
dropout=args.dropout,
gpu=args.cuda)
gan_gen = MLP_G(input_dim=args.z_size, output_dim=args.nhidden, arch_layers=args.arch_g)
gan_disc = MLP_D(input_dim=args.nhidden, output_dim=1, arch_layers=args.arch_d)
classifier = MLP_Classify(ninput=args.nhidden, noutput=1, layers=args.arch_classify)
g_factor = None
print(autoencoder)
print(gan_gen)
print(gan_disc)
print(classifier)
optimizer_ae = optim.SGD(autoencoder.parameters(), lr=args.lr_ae)
optimizer_gan_g = optim.Adam(gan_gen.parameters(),
lr=args.lr_gan_g,
betas=(args.beta1, 0.999))
optimizer_gan_d = optim.Adam(gan_disc.parameters(),
lr=args.lr_gan_d,
elif classname.find('BatchNorm') != -1:
m.weight.data.normal_(1.0, 0.02)
m.bias.data.fill_(0)
# In[16]:
from tqdm import tqdm
if model_name=='DC':
G = DCGAN_G(isize=img_size, nz=z_size, nc=image_chanel, ngf=hidden_size, ngpu=0)
G.apply(weights_init)
D = Sinkhorn_DCGAN_D(isize=img_size, nz=z_size, nc=image_chanel, ndf=hidden_size, ngpu=0, output_dimension=output_dimension)
D.apply(weights_init)
if model_name=='MLP':
G = MLP_G(isize=img_size, nz=z_size, nc=image_chanel, ngf=hidden_size, ngpu=0)
D = Sinkhorn_MLP_D(isize=img_size, nz=z_size, nc=image_chanel, ndf=hidden_size, ngpu=0)
print(G)
print(D)
if use_cuda:
G.cuda()
D.cuda()
G_lr = D_lr = 5e-5
optimizers = {
'D': torch.optim.RMSprop(D.parameters(), lr=D_lr),
'G': torch.optim.RMSprop(G.parameters(), lr=G_lr)
}
data_iter=iter(data_loader)
errs_real=[]
errs_fake=[]
def main():
state_dict = torch.load(args.ae_model)
with open(args.ae_args) as f:
ae_args = json.load(f)
corpus = Corpus(args.data_file,
args.dict_file,
vocab_size=ae_args['vocab_size'])
autoencoder = Seq2Seq(emsize=ae_args['emsize'],
nhidden=ae_args['nhidden'],
ntokens=ae_args['ntokens'],
nlayers=ae_args['nlayers'],
noise_radius=ae_args['noise_radius'],
hidden_init=ae_args['hidden_init'],
dropout=ae_args['dropout'],
gpu=args.cuda)
autoencoder.load_state_dict(state_dict)
for param in autoencoder.parameters():
param.requires_grad = False
# save arguments
with open(os.path.join(out_dir, 'args.json'), 'w') as f:
json.dump(vars(args), f)
log.info('[Data and AE model loaded.]')
gan_gen = MLP_G(ninput=args.nhidden,
noutput=args.nhidden,
layers=args.arch_g)
gan_disc = MLP_D(ninput=2 * args.nhidden, noutput=1, layers=args.arch_d)
optimizer_gan_g = optim.Adam(gan_gen.parameters(),
lr=args.lr_gan_g,
betas=(args.beta1, 0.999))
optimizer_gan_d = optim.Adam(gan_disc.parameters(),
lr=args.lr_gan_d,
betas=(args.beta1, 0.999))
criterion_ce = nn.CrossEntropyLoss()
if args.cuda:
autoencoder = autoencoder.cuda()
gan_gen = gan_gen.cuda()
gan_disc = gan_disc.cuda()
criterion_ce = criterion_ce.cuda()
one = to_gpu(args.cuda, torch.FloatTensor([1]))
mone = one * -1
train_pairs = BatchGen(corpus.get_chunks(size=2), args.batch_size)
def train_gan_g(batch):
gan_gen.train()
gan_gen.zero_grad()
source, _ = batch
source = to_gpu(args.cuda, Variable(source))
source_hidden = autoencoder(source, noise=False, encode_only=True)
fake_hidden = gan_gen(source_hidden)
errG = gan_disc(source_hidden, fake_hidden)
# loss / backprop
errG.backward(one)
optimizer_gan_g.step()
return errG
def train_gan_d(batch):
# clamp parameters to a cube
for p in gan_disc.parameters():
p.data.clamp_(-args.gan_clamp, args.gan_clamp)
gan_disc.train()
gan_disc.zero_grad()
# positive samples ----------------------------
# generate real codes
source, target = batch
source = to_gpu(args.cuda, Variable(source))
target = to_gpu(args.cuda, Variable(target))
# batch_size x nhidden
source_hidden = autoencoder(source, noise=False, encode_only=True)
target_hidden = autoencoder(target, noise=False, encode_only=True)
# loss / backprop
errD_real = gan_disc(source_hidden, target_hidden)
errD_real.backward(one)
# negative samples ----------------------------
# loss / backprop
fake_hidden = gan_gen(source_hidden)
errD_fake = gan_disc(source_hidden.detach(), fake_hidden.detach())
errD_fake.backward(mone)
optimizer_gan_d.step()
errD = -(errD_real - errD_fake)
return errD, errD_real, errD_fake
niter = 0
start_time = datetime.now()
for t in range(args.updates):
niter += 1
# train discriminator/critic
for i in range(args.niters_gan_d):
# feed a seen sample within this epoch; good for early training
errD, errD_real, errD_fake = \
train_gan_d(next(train_pairs))
# train generator
for i in range(args.niters_gan_g):
errG = train_gan_g(next(train_pairs))
if niter % args.log_interval == 0:
eta = str((datetime.now() - start_time) / (t + 1) *
(args.updates - t - 1)).split('.')[0]
log.info('[{}/{}] Loss_D: {:.6f} (real: {:.6f} '
'fake: {:.6f}) Loss_G: {:.6f} ETA: {}'.format(
niter, args.updates,
errD.data.cpu()[0],
errD_real.data.cpu()[0],
errD_fake.data.cpu()[0],
errG.data.cpu()[0], eta))
if niter % args.save_interval == 0:
save_model(gan_gen, out_dir, 'gan_gen_model_{}.pt'.format(t))
save_model(gan_disc, out_dir, 'gan_disc_model_{}.pt'.format(t))
###############################################################################
ntokens = len(corpus.dictionary.word2idx)
autoencoder = Seq2Seq(emsize=emsize,
nhidden=nhidden,
ntokens=ntokens,
nlayers=nlayers,
noise_radius=noise_radius,
hidden_init=False,
dropout=dropout,
gpu=cuda)
# In[695]:
gan_gen = MLP_G(ninput=z_size,
noutput=nhidden,
ncategory=ncategory,
layers=arch_g)
# In[696]:
gan_disc = MLP_D(ninput=nhidden, noutput=1, ncategory=ncategory, layers=arch_d)
# In[697]:
#1204delete
#print(autoencoder)
#print(gan_gen)
#print(gan_disc)
optimizer_ae = optim.SGD(autoencoder.parameters(), lr=lr_ae)
optimizer_gan_g = optim.Adam(gan_gen.parameters(),
char_ae.load_state_dict(char_ae_params)
word_ae = Seq2Seq(emsize=word_args.emsize,
nhidden=word_args.nhidden,
ntokens=word_args.ntokens,
nlayers=word_args.nlayers,
noise_r=word_args.noise_r,
hidden_init=word_args.hidden_init,
dropout=word_args.dropout)
word_ae.load_state_dict(word_ae_params)
D = MLP_D(input_dim=args.nhidden, output_dim=1, arch_layers=args.arch_d)
G = MLP_G(input_dim=args.nhidden,
output_dim=args.nhidden,
noise_dim=args.z_size,
arch_layers=args.arch_g)
if args.finetune_ae:
logger.info("AE will be fine-tuned")
optimizer_D = optim.Adam(list(D.parameters()) +
list(char_ae.parameters()) +
list(word_ae.parameters()),
lr=args.lr_gan_d,
betas=(args.beta1, 0.999))
optimizer_G = optim.Adam(list(G.parameters()) +
list(char_ae.parameters()) +
list(word_ae.parameters()),
lr=args.lr_gan_g,
betas=(args.beta1, 0.999))
else:
logger.info("AE will not be fine-tuned")