return encoded_list, label_list
# Train model
if args.model != 'PCA':
log = []
t_total = time.time()
for epoch in range(args.epochs):
log_epoch = train(epoch)
log.append(log_epoch)
print("Optimization Finished!")
print("Total time elapsed: {:.4f}s".format(time.time() - t_total))
# Test
encoded_list, label_list = test()
if args.encoded is not None:
np.savez(args.encoded, encoded=encoded_list, label=label_list)
# Save File
if args.log is not None:
np.savetxt(args.log, log)
if args.o is not None:
torch.save({
'model_state_dict': model.state_dict(),
'optimizer_state_dict': optimizer.state_dict(),
}, args.o)
def train():
from benchmark import calc_fid, extract_feature_from_generator_fn, load_patched_inception_v3, real_image_loader, image_generator, image_generator_perm
import lpips
from config import IM_SIZE_GAN, BATCH_SIZE_GAN, NFC, NBR_CLS, DATALOADER_WORKERS, EPOCH_GAN, ITERATION_AE, GAN_CKECKPOINT
from config import SAVE_IMAGE_INTERVAL, SAVE_MODEL_INTERVAL, LOG_INTERVAL, SAVE_FOLDER, TRIAL_NAME, DATA_NAME, MULTI_GPU
from config import FID_INTERVAL, FID_BATCH_NBR, PRETRAINED_AE_PATH
from config import data_root_colorful, data_root_sketch_1, data_root_sketch_2, data_root_sketch_3
real_features = None
inception = load_patched_inception_v3().cuda()
inception.eval()
percept = lpips.PerceptualLoss(model='net-lin', net='vgg', use_gpu=True)
saved_image_folder = saved_model_folder = None
log_file_path = None
if saved_image_folder is None:
saved_image_folder, saved_model_folder = make_folders(
SAVE_FOLDER, 'GAN_' + TRIAL_NAME)
log_file_path = saved_image_folder + '/../gan_log.txt'
log_file = open(log_file_path, 'w')
log_file.close()
dataset = PairedMultiDataset(data_root_colorful,
data_root_sketch_1,
data_root_sketch_2,
data_root_sketch_3,
im_size=IM_SIZE_GAN,
rand_crop=True)
print('the dataset contains %d images.' % len(dataset))
dataloader = iter(
DataLoader(dataset,
BATCH_SIZE_GAN,
sampler=InfiniteSamplerWrapper(dataset),
num_workers=DATALOADER_WORKERS,
pin_memory=True))
from datasets import ImageFolder
from datasets import trans_maker_augment as trans_maker
dataset_rgb = ImageFolder(data_root_colorful, trans_maker(512))
dataset_skt = ImageFolder(data_root_sketch_3, trans_maker(512))
net_ae = AE(nfc=NFC, nbr_cls=NBR_CLS)
if PRETRAINED_AE_PATH is None:
PRETRAINED_AE_PATH = 'train_results/' + 'AE_' + TRIAL_NAME + '/models/%d.pth' % ITERATION_AE
else:
from config import PRETRAINED_AE_ITER
PRETRAINED_AE_PATH = PRETRAINED_AE_PATH + '/models/%d.pth' % PRETRAINED_AE_ITER
net_ae.load_state_dicts(PRETRAINED_AE_PATH)
net_ae.cuda()
net_ae.eval()
RefineGenerator = None
if DATA_NAME == 'celeba':
from models import RefineGenerator_face as RefineGenerator
elif DATA_NAME == 'art' or DATA_NAME == 'shoe':
from models import RefineGenerator_art as RefineGenerator
net_ig = RefineGenerator(nfc=NFC, im_size=IM_SIZE_GAN).cuda()
net_id = Discriminator(nc=3).cuda(
) # we use the patch_gan, so the im_size for D should be 512 even if training image size is 1024
if MULTI_GPU:
net_ae = nn.DataParallel(net_ae)
net_ig = nn.DataParallel(net_ig)
net_id = nn.DataParallel(net_id)
net_ig_ema = copy_G_params(net_ig)
opt_ig = optim.Adam(net_ig.parameters(), lr=2e-4, betas=(0.5, 0.999))
opt_id = optim.Adam(net_id.parameters(), lr=2e-4, betas=(0.5, 0.999))
if GAN_CKECKPOINT is not None:
ckpt = torch.load(GAN_CKECKPOINT)
net_ig.load_state_dict(ckpt['ig'])
net_id.load_state_dict(ckpt['id'])
net_ig_ema = ckpt['ig_ema']
opt_ig.load_state_dict(ckpt['opt_ig'])
opt_id.load_state_dict(ckpt['opt_id'])
## create a log file
losses_g_img = AverageMeter()
losses_d_img = AverageMeter()
losses_mse = AverageMeter()
losses_rec_s = AverageMeter()
losses_rec_ae = AverageMeter()
fixed_skt = fixed_rgb = fixed_perm = None
fid = [[0, 0]]
for epoch in range(EPOCH_GAN):
for iteration in tqdm(range(10000)):
rgb_img, skt_img_1, skt_img_2, skt_img_3 = next(dataloader)
rgb_img = rgb_img.cuda()
rd = random.randint(0, 3)
if rd == 0:
skt_img = skt_img_1.cuda()
elif rd == 1:
skt_img = skt_img_2.cuda()
else:
skt_img = skt_img_3.cuda()
if iteration == 0:
fixed_skt = skt_img_3[:8].clone().cuda()
fixed_rgb = rgb_img[:8].clone()
fixed_perm = true_randperm(fixed_rgb.shape[0], 'cuda')
### 1. train D
gimg_ae, style_feats = net_ae(skt_img, rgb_img)
g_image = net_ig(gimg_ae, style_feats)
pred_r = net_id(rgb_img)
pred_f = net_id(g_image.detach())
loss_d = d_hinge_loss(pred_r, pred_f)
net_id.zero_grad()
loss_d.backward()
opt_id.step()
loss_rec_ae = F.mse_loss(gimg_ae, rgb_img) + F.l1_loss(
gimg_ae, rgb_img)
losses_rec_ae.update(loss_rec_ae.item(), BATCH_SIZE_GAN)
### 2. train G
pred_g = net_id(g_image)
loss_g = g_hinge_loss(pred_g)
if DATA_NAME == 'shoe':
loss_mse = 10 * (F.l1_loss(g_image, rgb_img) +
F.mse_loss(g_image, rgb_img))
else:
loss_mse = 10 * percept(
F.adaptive_avg_pool2d(g_image, output_size=256),
F.adaptive_avg_pool2d(rgb_img, output_size=256)).sum()
losses_mse.update(loss_mse.item() / BATCH_SIZE_GAN, BATCH_SIZE_GAN)
loss_all = loss_g + loss_mse
if DATA_NAME == 'shoe':
### the grey image reconstruction
perm = true_randperm(BATCH_SIZE_GAN)
img_ae_perm, style_feats_perm = net_ae(skt_img, rgb_img[perm])
gimg_grey = net_ig(img_ae_perm, style_feats_perm)
gimg_grey = gimg_grey.mean(dim=1, keepdim=True)
real_grey = rgb_img.mean(dim=1, keepdim=True)
loss_rec_grey = F.mse_loss(gimg_grey, real_grey)
loss_all += 10 * loss_rec_grey
net_ig.zero_grad()
loss_all.backward()
opt_ig.step()
for p, avg_p in zip(net_ig.parameters(), net_ig_ema):
avg_p.mul_(0.999).add_(p.data, alpha=0.001)
### 3. logging
losses_g_img.update(pred_g.mean().item(), BATCH_SIZE_GAN)
losses_d_img.update(pred_r.mean().item(), BATCH_SIZE_GAN)
if iteration % SAVE_IMAGE_INTERVAL == 0: #show the current images
with torch.no_grad():
backup_para_g = copy_G_params(net_ig)
load_params(net_ig, net_ig_ema)
gimg_ae, style_feats = net_ae(fixed_skt, fixed_rgb)
gmatch = net_ig(gimg_ae, style_feats)
gimg_ae_perm, style_feats = net_ae(fixed_skt,
fixed_rgb[fixed_perm])
gmismatch = net_ig(gimg_ae_perm, style_feats)
gimg = torch.cat([
F.interpolate(fixed_rgb, IM_SIZE_GAN),
F.interpolate(fixed_skt.repeat(1, 3, 1, 1),
IM_SIZE_GAN), gmatch,
F.interpolate(gimg_ae, IM_SIZE_GAN), gmismatch,
F.interpolate(gimg_ae_perm, IM_SIZE_GAN)
])
vutils.save_image(
gimg,
f'{saved_image_folder}/img_iter_{epoch}_{iteration}.jpg',
normalize=True,
range=(-1, 1))
del gimg
make_matrix(
dataset_rgb, dataset_skt, net_ae, net_ig, 5,
f'{saved_image_folder}/img_iter_{epoch}_{iteration}_matrix.jpg'
)
load_params(net_ig, backup_para_g)
if iteration % LOG_INTERVAL == 0:
log_msg = 'Iter: [{0}/{1}] G: {losses_g_img.avg:.4f} D: {losses_d_img.avg:.4f} MSE: {losses_mse.avg:.4f} Rec: {losses_rec_s.avg:.5f} FID: {fid:.4f}'.format(
epoch,
iteration,
losses_g_img=losses_g_img,
losses_d_img=losses_d_img,
losses_mse=losses_mse,
losses_rec_s=losses_rec_s,
fid=fid[-1][0])
print(log_msg)
print('%.5f' % (losses_rec_ae.avg))
if log_file_path is not None:
log_file = open(log_file_path, 'a')
log_file.write(log_msg + '\n')
log_file.close()
losses_g_img.reset()
losses_d_img.reset()
losses_mse.reset()
losses_rec_s.reset()
losses_rec_ae.reset()
if iteration % SAVE_MODEL_INTERVAL == 0 or iteration + 1 == 10000:
print('Saving history model')
torch.save(
{
'ig': net_ig.state_dict(),
'id': net_id.state_dict(),
'ae': net_ae.state_dict(),
'ig_ema': net_ig_ema,
'opt_ig': opt_ig.state_dict(),
'opt_id': opt_id.state_dict(),
}, '%s/%d.pth' % (saved_model_folder, epoch))
if iteration % FID_INTERVAL == 0 and iteration > 1:
print("calculating FID ...")
fid_batch_images = FID_BATCH_NBR
if real_features is None:
if os.path.exists('%s_fid_feats.npy' % (DATA_NAME)):
real_features = pickle.load(
open('%s_fid_feats.npy' % (DATA_NAME), 'rb'))
else:
real_features = extract_feature_from_generator_fn(
real_image_loader(dataloader,
n_batches=fid_batch_images),
inception)
real_mean = np.mean(real_features, 0)
real_cov = np.cov(real_features, rowvar=False)
pickle.dump(
{
'feats': real_features,
'mean': real_mean,
'cov': real_cov
}, open('%s_fid_feats.npy' % (DATA_NAME), 'wb'))
real_features = pickle.load(
open('%s_fid_feats.npy' % (DATA_NAME), 'rb'))
sample_features = extract_feature_from_generator_fn(
image_generator(dataset,
net_ae,
net_ig,
n_batches=fid_batch_images),
inception,
total=fid_batch_images)
cur_fid = calc_fid(sample_features,
real_mean=real_features['mean'],
real_cov=real_features['cov'])
sample_features_perm = extract_feature_from_generator_fn(
image_generator_perm(dataset,
net_ae,
net_ig,
n_batches=fid_batch_images),
inception,
total=fid_batch_images)
cur_fid_perm = calc_fid(sample_features_perm,
real_mean=real_features['mean'],
real_cov=real_features['cov'])
fid.append([cur_fid, cur_fid_perm])
print('fid:', fid)
if log_file_path is not None:
log_file = open(log_file_path, 'a')
log_msg = 'fid: %.5f, %.5f' % (fid[-1][0], fid[-1][1])
log_file.write(log_msg + '\n')
log_file.close()
class BiomeAE():
def __init__(self, args):
if args.model in ["BiomeAEL0"]:
self.mlp_type = "L0"
else:
self.mlp_type = None
self.model_alias = args.model_alias
self.model= args.model
self.snap_loc = os.path.join(args.vis_dir, "snap.pt")
#tl.configure("runs/ds.{}".format(model_alias))
#tl.log_value(model_alias, 0)
""" no stat file needed for now
stat_alias = 'obj_DataStat+%s_%s' % (args.dataset_name, args.dataset_subset)
stat_path = os.path.join(
output_dir, '%s.pkl' % (stat_alias)
)
with open(stat_path,'rb') as sf:
data_stats = pickle.load(sf)
"""
os.environ["CUDA_VISIBLE_DEVICES"] = args.gpu_num
self.predictor = None
torch.manual_seed(args.seed)
if torch.cuda.is_available():
torch.cuda.manual_seed(args.seed)
self.device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
def get_transformation(self):
return None
def loss_fn(self, recon_x, x, mean, log_var):
if self.model in ["BiomeAE","BiomeAESnip"]:
mseloss = torch.nn.MSELoss()
return torch.sqrt(mseloss(recon_x, x))
if self.model in ["BiomeAEL0"]:
mseloss = torch.nn.MSELoss()
return torch.sqrt(mseloss(recon_x, x))+self.predictor.regularization()
elif self.model =="BiomeVAE":
BCE = torch.nn.functional.binary_cross_entropy(
recon_x.view(-1, 28*28), x.view(-1, 28*28), reduction='sum')
KLD = -0.5 * torch.sum(1 + log_var - mean.pow(2) - log_var.exp())
return (BCE + KLD) / x.size(0)
def param_l0(self):
return self.predictor.param_l0()
def init_fit(self, X1_train, X2_train, y_train, X1_val, X2_val, y_val, args, ):
self.train_loader = get_dataloader (X1_train, X2_train, y_train, args.batch_size)
self.test_loader = get_dataloader(X1_val, X2_val, y_val, args.batch_size)
self.predictor = AE(
encoder_layer_sizes=[X1_train.shape[1]],
latent_size=args.latent_size,
decoder_layer_sizes=[X2_train.shape[1]],
activation=args.activation,
batch_norm= args.batch_norm,
dropout=args.dropout,
mlp_type=self.mlp_type,
conditional=args.conditional,
num_labels=10 if args.conditional else 0).to(self.device)
self.optimizer = torch.optim.Adam(self.predictor.parameters(), lr=args.learning_rate)
self.scheduler = torch.optim.lr_scheduler.ExponentialLR(self.optimizer, gamma=0.8)
def train(self, args):
if args.contr:
print("Loading from ", self.snap_loc)
loaded_model_para = torch.load(self.snap_loc)
self.predictor.load_state_dict(loaded_model_para)
t = 0
logs = defaultdict(list)
iterations_per_epoch = len(self.train_loader.dataset) / args.batch_size
num_iterations = int(iterations_per_epoch * args.epochs)
for epoch in range(args.epochs):
tracker_epoch = defaultdict(lambda: defaultdict(dict))
for iteration, (x1, x2, y) in enumerate(self.train_loader):
t+=1
x1, x2, y = x1.to(self.device), x2.to(self.device), y.to(self.device)
if args.conditional:
x2_hat, z, mean, log_var = self.predictor(x1, y)
else:
x2_hat, z, mean, log_var = self.predictor(x1)
for i, yi in enumerate(y):
id = len(tracker_epoch)
tracker_epoch[id]['x'] = z[i, 0].item()
tracker_epoch[id]['y'] = z[i, 1].item()
tracker_epoch[id]['label'] = yi.item()
loss = self.loss_fn(x2_hat, x2, mean, log_var)
self.optimizer.zero_grad()
loss.backward()
if (t + 1) % int(num_iterations / 10) == 0:
self.scheduler.step()
self.optimizer.step()
#enforce non-negative
if args.nonneg_weight:
for layer in self.predictor.modules():
if isinstance(layer, nn.Linear):
layer.weight.data.clamp_(0.0)
logs['loss'].append(loss.item())
if iteration % args.print_every == 0 or iteration == len(self.train_loader)-1:
print("Epoch {:02d}/{:02d} Batch {:04d}/{:d}, Loss {:9.4f}".format(
epoch, args.epochs, iteration, len(self.train_loader)-1, loss.item()))
if args.model =="VAE":
if args.conditional:
c = torch.arange(0, 10).long().unsqueeze(1)
x = self.predictor.inference(n=c.size(0), c=c)
else:
x = self.predictor.inference(n=10)
if not args.contr:
print("Saving to ", self.snap_loc)
torch.save(self.predictor.state_dict(), self.snap_loc)
def fit(self,X1_train, X2_train, y_train, X1_val, X2_val, y_val, args,):
self.init_fit(X1_train, X2_train, y_train, X1_val, X2_val, y_val, args)
self.train(args)
def get_graph(self):
"""
return nodes and weights
:return:
"""
nodes = []
weights = []
for l, layer in enumerate(self.predictor.modules()):
if isinstance(layer, nn.Linear):
lin_layer =layer
nodes.append(["%s"%(x) for x in list(range(lin_layer.in_features))])
weights.append(lin_layer.weight.detach().cpu().numpy().T)
nodes.append(["%s"%(x) for x in list(range(lin_layer.out_features))]) #last linear layer
return (nodes, weights)
def predict(self,X1_val, X2_val, y_val, args):
#Batch test
x1, x2, y = torch.FloatTensor(X1_val).to(self.device), torch.FloatTensor(X2_val).to(self.device), torch.FloatTensor(y_val).to(self.device)
if args.conditional:
x2_hat, z, mean, log_var = self.predictor(x1, y)
else:
x2_hat, z, mean, log_var = self.predictor(x1)
val_loss = self.loss_fn( x2_hat, x2, mean, log_var)
print("val_loss: {:9.4f}", val_loss.item())
return x2_hat.detach().cpu().numpy()
def transform(self,X1_val, X2_val, y_val, args):
x1, x2, y = torch.FloatTensor(X1_val).to(self.device), torch.FloatTensor(X2_val).to(
self.device), torch.FloatTensor(y_val).to(self.device)
if args.conditional:
x2_hat, z, mean, log_var = self.predictor(x1, y)
else:
x2_hat, z, mean, log_var = self.predictor(x1)
return z.detach().cpu().numpy()
def get_influence_matrix(self):
return self.predictor.get_influence_matrix()
def data_aug(data, lr=0.001, epoch=800, batch_size=128):
folder = 'data_aug'
save_path = f'{folder}/data_augment.csv'
clean_file(save_path)
store_e = [700, 750, 800]
if not os.path.exists(folder):
os.makedirs(folder)
else:
for i in store_e:
result = test(data, folder, i)
return result
train_loss_curve = []
valid_loss_curve = []
# load model
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
model = AE()
model = model.to(device)
model.train()
dataset = AEDataset(data)
train_size = int(0.85 * len(dataset))
valid_size = len(dataset) - train_size
train_dataset, valid_dataset = random_split(dataset,
[train_size, valid_size])
train_dataloader = DataLoader(dataset=train_dataset,
batch_size=batch_size,
shuffle=True)
valid_dataloader = DataLoader(dataset=valid_dataset,
batch_size=batch_size,
shuffle=True)
# loss function and optimizer
# can change loss function and optimizer you want
criterion = nn.MSELoss()
optimizer = torch.optim.Adam(model.parameters(), lr=lr)
best = 100
# start training
for e in range(epoch):
train_loss = 0.0
valid_loss = 0.0
print(f'\nEpoch: {e+1}/{epoch}')
print('-' * len(f'Epoch: {e+1}/{epoch}'))
# tqdm to disply progress bar
for inputs in tqdm(train_dataloader):
# data from data_loader
inputs = inputs.float().to(device)
outputs = model(inputs, device)
loss = criterion(outputs, inputs)
optimizer.zero_grad()
loss.backward()
optimizer.step()
train_loss += loss.item()
for inputs in tqdm(valid_dataloader):
# data from data_loader
inputs = inputs.float().to(device)
outputs = model(inputs, device)
# MSE loss
loss = criterion(outputs, inputs)
# loss calculate
valid_loss += loss.item()
# save the best model weights as .pth file
loss_epoch = train_loss / len(train_dataset)
valid_loss_epoch = valid_loss / len(valid_dataset)
# if valid_loss_epoch < best :
# best = valid_loss_epoch
# torch.save(model.state_dict(), 'data_aug.pth')
if e in store_e:
torch.save(model.state_dict(), f'{folder}/ep{e}data_aug.pth')
print(f"training in epoch {e},start augment data!!")
result = test(data, folder, e)
print(f'Training loss: {loss_epoch:.4f}')
print(f'Valid loss: {valid_loss_epoch:.4f}')
# save loss every epoch
train_loss_curve.append(loss_epoch)
valid_loss_curve.append(valid_loss_epoch)
# generate training curve
# visualize(train_loss_curve,valid_loss_curve, 'Data Augmentation')
return result