def train_model(self):
best_acc = 0.0
print("Beginning Training for", self.epochs, " Epochs")
for epoch in range(1, self.epochs + 1):
if epoch == 80:
self.lr = 0.01
for group in self.optimizer.param_groups:
group['lr'] = self.lr
elif epoch == 140:
self.lr = 0.001
for group in self.optimizer.param_groups:
group['lr'] = self.lr
train_utils.train(self, epoch)
acc, loss = train_utils.evaluate(self)
# acc = round(acc.item(), 4)
# Save best performance model
if best_acc < acc:
best_model_wts = copy.deepcopy(self.model.state_dict())
best_epoch = epoch
best_acc = acc
best_loss = loss
print(f"Saving best model: Loss={best_loss}, Acc={best_acc}, Ep={best_epoch}")
# Save Best model
torch.save(best_model_wts, self.checkpoint_path.format(epoch=best_epoch, acc=best_acc))
# Record Metrics
self.overall_log.append(
{"Experiment": self.exp_name, "Epoch": best_epoch, "Test_Acc": round(best_acc * 100, 2),
"Test_Loss": best_loss})
train_utils.record_overall_metrics(self, ['Experiment', 'Epoch', "Test_Acc", "Test_Loss"])
def fine_tune(self):
best_acc = 0.0
self.lr = 0.01
self.optimizer = torch.optim.SGD(self.model.parameters(), lr=self.lr, momentum=0.9, weight_decay=5e-4)
print("Beginning Training for", self.epochs, " Epochs")
for epoch in range(1, 41):
if epoch == 10:
self.lr = self.lr * 0.1
for group in self.optimizer.param_groups:
group['lr'] = self.lr
elif epoch == 20:
self.lr = self.lr * 0.1
for group in self.optimizer.param_groups:
group['lr'] = self.lr
train_utils.train(self, epoch)
acc, loss = train_utils.evaluate(self)
acc = round(acc.item(), 4)
# Save best performance model
if best_acc < acc:
best_model_wts = copy.deepcopy(self.model.state_dict())
best_epoch = epoch
best_acc = acc
best_loss = loss
# Save Best model
# torch.save(best_model_wts, self.checkpoint_path.format(epoch=best_epoch, acc=round(best_acc * 100, 2)))
# Record Metrics
self.overall_log.append(
{"Experiment": self.exp_name, "Epoch": best_epoch, "Test_Acc": best_acc,
"Test_Loss": best_loss})
train_utils.record_overall_metrics(self, ['Experiment', 'Epoch', "Test_Acc", "Test_Loss"])
def train_model(self):
best_acc = 0.0
print("Beginning Training for", self.epochs, " Epochs")
for epoch in range(1, self.epochs + 1):
if epoch == 80:
self.lr = 0.01
for group in self.optimizer.param_groups:
group['lr'] = self.lr
elif epoch == 140:
self.lr = 0.001
for group in self.optimizer.param_groups:
group['lr'] = self.lr
train_utils.train(self, epoch)
acc, loss = train_utils.evaluate(self)
acc = round(acc.item(), 4)
loss = round(loss, 4)
# Save best performance model
if best_acc < acc:
best_model_wts = copy.deepcopy(self.model.state_dict())
best_epoch = epoch
best_acc = acc
best_loss = loss
# Save Best model
# torch.save(best_model_wts, self.model_path.format(task=self.task, epoch=best_epoch, acc=round(best_acc * 100, 2)))
# Record Metrics
train_utils.record_metrics(self)
self.overall_log.append(
{"Task": self.task, "Epoch": best_epoch, "Test_Acc": round(best_acc * 100, 2), "Test_Loss": best_loss})
train_utils.record_overall_metrics(self)
def main():
start_time = time()
in_arg = get_args_train()
data_dir = in_arg.data_dir
device = get_device(in_arg.gpu)
# print(device)
dataloaders = get_dataloaders(data_dir)
criterion = get_criterion()
model = get_model(device=device,
arch=in_arg.arch,
hidden_units=in_arg.hidden_units,
data_dir=in_arg.data_dir,
save_dir=in_arg.save_dir)
# print(model)
optimizer = get_optimizer(model, in_arg.learning_rate)
# print(optimizer)
train(model,
criterion,
optimizer,
epochs=in_arg.epochs,
device=device,
train_loader=dataloaders['train'],
valid_loader=dataloaders['valid'])
tot_time = time() - start_time
print(f"\n** Total Elapsed Runtime: {tot_time:.3f} seconds")
def finetune_classifier(self, task, ittr="0"):
print('-' * 50)
print("Training task:\t", task)
self.data_loaders = train_utils.CIFAR_dl_task(self, task,
self.per_task_norm)
best_acc = 0.0
# Setup Model
model = self.backbone_model
for param in model.parameters():
param.requires_grad = False
model.fc = nn.Linear(512, 5)
self.model = model.to(self.device)
self.lr = 0.01
self.optimizer = torch.optim.SGD(self.model.parameters(),
lr=self.lr,
momentum=0.9,
weight_decay=5e-4)
print("Finetuning for", self.epochs, " Epochs")
for epoch in range(1, self.epochs + 1):
if epoch == 10:
self.lr = self.lr * 0.1
for group in self.optimizer.param_groups:
group['lr'] = self.lr
elif epoch == 20:
self.lr = self.lr * 0.1
for group in self.optimizer.param_groups:
group['lr'] = self.lr
train_utils.train(self, epoch)
acc, loss = train_utils.evaluate(self)
acc = round(acc.item(), 4)
loss = round(loss, 4)
# Save best performance model
if best_acc < acc:
best_model_wts = copy.deepcopy(self.model.state_dict())
best_acc = acc
best_loss = loss
best_epoch = epoch
# Save Best model
torch.save(
best_model_wts,
self.classifier_path.format(exp=ittr,
task=task,
epoch=best_epoch,
acc=round(best_acc * 100, 2)))
# Record Metrics
self.classifier_results.append({
"Task": task,
"Acc": round(best_acc * 100, 2),
"Loss": best_loss
})
def main():
config = [(64, 3, 1, 1), (64, 3, 1, 1), (1, 3, 1, 1)]
#config = [(64, 9, 1, 4), (32, 1, 1, 0), (3, 5, 1, 2)]
#config = [(64, 9, 1, 0), (32, 1, 1, 0), (3, 5, 1, 0)]
# config: (output_ch, kernel_size, stride, padding_size)
model = SRCNN(config).to(DEVICE)
loss_function = nn.MSELoss(reduction='mean')
optimizer = optim.Adam(model.parameters(), lr=0.0001)
test_data = generate_data('test')
for epoch in range(EPOCH):
train_data = generate_data('train')
train(model, train_data, loss_function, optimizer, DEVICE)
test(model, test_data, loss_function, epoch, DEVICE)
def training():
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
data_root = "/home/glazkova/ProbabilisticUnet/data"
img_transform_func = transforms.Compose([
transforms.Resize((256, 512), interpolation=PIL.Image.BILINEAR),
transforms.ToTensor(),
])
labels_transform_func = transforms.Compose([
transforms.Resize((256, 512), interpolation=PIL.Image.NEAREST),
transforms.Lambda(lambda x: id_to_train_id[x]),
transforms.ToTensor()
])
train_dataset = TransformedCityDataset(root=data_root,
mode="fine",
split="train",
target_type="semantic")
test_dataset = datasets.Cityscapes(root=data_root,
mode="fine",
split="val",
target_type="semantic",
transform=img_transform_func,
target_transform=labels_transform_func)
train_loader = torch.utils.data.DataLoader(dataset=train_dataset,
batch_size=train_batch_size)
test_loader = torch.utils.data.DataLoader(dataset=test_dataset,
batch_size=test_batch_size)
#iter_num = 240000
#n_epochs = iter_num // (len(train_dataset) // batch_size)
n_epochs = 100
model = ProbUNet(num_classes, latent_space_size)
#model.load_state_dict(torch.load("results/model"))
model.cuda()
opt = torch.optim.Adam(model.parameters(), lr=0.0001)
scheduler = StepLR(opt, step_size=5, gamma=0.9)
train_utils.train(model,
opt,
scheduler,
n_epochs,
train_loader,
test_loader,
save_path="results/final_3D/")
def main_(model_main):
#def main(CFG):
model = model_main.to(CFG['device'])
# 模型训练、补训、测试 #################################################################
if CFG['train_or_test'] =='train':
#optimizer = optim.Adadelta(model.parameters(), lr=CFG['lr']) # 求解器
optimizer = optim.SGD(model.parameters(), lr=CFG['lr'], momentum=CFG['momentum'],)
scheduler = StepLR(optimizer, step_size=2, gamma=CFG['gamma']) # 学习速率衰减方式
result_trace = np.zeros([1,7])
loss_trace = np.zeros([1,12]) # 逐个记录每个epoch的loss和acc
acc_trace = np.zeros([1,12])
for epoch in range(0,20): # 遍历每个epoch
start_time = datetime.datetime.now() # 训练开始时间
train_loss_epoch_i, train_acc_epoch_i = train(CFG, model, train_loader, optimizer, epoch) #
end_time = datetime.datetime.now(); time_cost = (end_time - start_time).seconds ; print('耗时:',time_cost) # 训练耗时
test_loss_epoch_i, test_acc_epoch_i, f4t_and_label = test(CFG, model, test_loader, is_print=True)
result_epoch_i = [epoch, train_acc_epoch_i[0], train_loss_epoch_i[0], test_acc_epoch_i[0],test_loss_epoch_i[0], scheduler.get_lr()[0],time_cost]
result_trace = np.vstack([result_trace, np.array(result_epoch_i).reshape(1,len(result_epoch_i))])
loss_trace = np.vstack([loss_trace, np.array([train_loss_epoch_i + test_loss_epoch_i]).reshape(1,12)])
acc_trace = np.vstack([acc_trace, np.array([train_acc_epoch_i + test_acc_epoch_i]).reshape(1,12)])
if epoch>0:
scheduler.step()
if CFG['save_model'] :
pt_name = '[STI]_' + model.name+ '_'+CFG['dataset_choose'] +'_epoch'+str(0)+'to'+str(epoch) +'_sample'+str(CFG['NO_train'][0])+'to'+str(CFG['NO_train'][1]) # 文件主命名, STI表示Source Trained In
# plot_curve(result_trace[:,0],[result_trace[:,1],result_trace[:,3]],'结果图/'+pt_name+'_ACC.png', xlabel='Epoch',ylabel='ACC',title='ACC',legend=['Training_Accuracy','Testing_Accuracy'])
pt = {'model':model.state_dict(), 'optimizer':optimizer.state_dict(),'scheduler':scheduler.state_dict(),'CFG':CFG,
'model_name':model.name, 'result_trace':result_trace, 'loss_trace':loss_trace, 'acc_trace':acc_trace }
torch.save(pt, pt_name + '_' + device.type + '_rand' + str(CFG['random_seed']) + '.pt')
def main():
generator = srgan.SRGAN_gen().to(device)
discriminator = srgan.SRGAN_dis().to(device)
params = list(generator.parameters()) + list(discriminator.parameters())
optimizer = optim.Adam(params, lr=1e-4)
trainset = TrainDataset()
train_loader = DataLoader(dataset=trainset,
batch_size=BATCH_SIZE,
shuffle=True)
test_data = Image.open('./SR_dataset/Set5/001_HR.png')
test_data = transforms.ToTensor()(test_data)
test_data = test_data.unsqueeze(0)
test_data = test_data.to(device)
for epoch in range(10000):
train(generator, discriminator, optimizer, train_loader, device, epoch)
if epoch % 1000 == 0:
test(generator, discriminator, test_data, epoch, device)
def fit():
(
train_img,
test_img,
train_labels,
test_labels,
train_orig_labels,
test_orig_targets,
) = model_selection.train_test_split(IMAGES,
LABELS_ENCODED,
LABELS_NAMES,
test_size=0.1,
random_state=2020)
train_dataset = OcrDataset(image_path=train_img,
labels=train_labels,
resize=(IMAGE_HEIGHT, IMAGE_WIDTH))
train_loader = torch.utils.data.DataLoader(train_dataset,
batch_size=BATCH_SIZE,
num_workers=NUM_WORKERS,
shuffle=True)
test_dataset = OcrDataset(image_path=test_img,
labels=test_labels,
resize=(IMAGE_HEIGHT, IMAGE_WIDTH))
test_loader = torch.utils.data.DataLoader(test_dataset,
batch_size=BATCH_SIZE,
num_workers=NUM_WORKERS,
shuffle=False)
model = OcrModel_v0(num_characters=len(labels_encoded.classes_))
model.to(DEVICE)
optimizer = torch.optim.Adam(model.parameters(), lr=3e-4)
scheduler = torch.optim.lr_scheduler.ReduceLROnPlateau(optimizer,
factor=0.8,
patience=2,
verbose=True)
for epoch in range(EPOCHS):
train_loss = train(model, train_loader, optimizer)
valid_preds, valid_loss = evaluate(model, test_loader)
valid_final_preds = []
for pred in valid_preds:
# print(pred)
cur_preds = decode_preds(pred, labels_encoded)
valid_final_preds.extend(cur_preds)
show_preds_list = list(zip(test_orig_targets, valid_final_preds))[1:3]
pprint(show_preds_list)
pprint("-" * 90)
pprint(
f"Epoch: {epoch} | Train loss = {train_loss} | Valid loss = {valid_loss} |"
)
pprint("-" * 90)
def main(args):
train_loader, val_loader = custom_data_loader.customDataloader(args)
model = custom_model.buildModel(args)
optimizer, scheduler, records = solver_utils.configOptimizer(args, model)
criterion = solver_utils.Criterion(args)
recorder = recorders.Records(args.log_dir, records)
tf_train_writer, tf_test_writer = tfboard.tensorboard_init()
for epoch in range(args.start_epoch, args.epochs+1):
scheduler.step()
recorder.insertRecord('train', 'lr', epoch, scheduler.get_lr()[0])
train_utils.train(args, train_loader, model, criterion, optimizer, log, epoch, recorder, tf_train_writer)
if epoch % args.save_intv == 0:
model_utils.saveCheckpoint(args.cp_dir, epoch, model, optimizer, recorder.records, args)
if epoch % args.val_intv == 0:
test_utils.test(args, 'val', val_loader, model, log, epoch, recorder, tf_test_writer)
def my_main(_run, lr, weight_decay, message, use_gpu, epochs, save_images,
experiment_folder):
print(message)
print("Use gpu: {}".format(use_gpu))
# print(_run)
# create_dirs()
model = ColorNet()
criterion = nn.MSELoss()
if use_gpu:
criterion = criterion.cuda()
model = model.cuda()
optimizer = torch.optim.Adam(model.parameters(),
lr=lr,
weight_decay=weight_decay)
train_folder = "places365_standard/train"
val_folder = "places365_standard/val"
train_loader = get_train_loader(train_folder)
validation_loader = get_val_loader(val_folder)
os.makedirs(experiment_folder + "outputs/color", exist_ok=True)
os.makedirs(experiment_folder + "outputs/gray", exist_ok=True)
os.makedirs(experiment_folder + "checkpoints", exist_ok=True)
best_losses = 1e10
print("Epochs: {}".format(epochs))
for epoch in range(epochs):
# Train for one epoch, then validate
train(train_loader, model, criterion, optimizer, epoch, _run)
with torch.no_grad():
losses = validate(validation_loader, model, criterion, save_images,
epoch, _run)
# Save checkpoint and replace old best model if current model is better
if losses < best_losses:
best_losses = losses
torch.save(
model.state_dict(),
experiment_folder +
"checkpoints/model-epoch-{}-losses-{:.3f}.pth".format(
epoch + 1, losses),
)
print("train_dataset.labels.shape", train_dataset.labels.shape)
print("test_dataset.labels.shape", test_dataset.labels.shape)
print("train_dataset",train_dataset)
print("test_dataset",test_dataset)
# create models
if "densenet" in cfg.model:
model = xrv.models.DenseNet(num_classes=train_dataset.labels.shape[1], in_channels=1,
**xrv.models.get_densenet_params(cfg.model))
elif "resnet101" in cfg.model:
model = torchvision.models.resnet101(num_classes=train_dataset.labels.shape[1], pretrained=False)
#patch for single channel
model.conv1 = torch.nn.Conv2d(1, 64, kernel_size=7, stride=2, padding=3, bias=False)
elif "shufflenet_v2_x2_0" in cfg.model:
model = torchvision.models.shufflenet_v2_x2_0(num_classes=train_dataset.labels.shape[1], pretrained=False)
#patch for single channel
model.conv1[0] = torch.nn.Conv2d(1, 24, kernel_size=3, stride=2, padding=1, bias=False)
else:
raise Exception("no model")
train_utils.train(model, train_dataset, cfg)
print("Done")
# test_loader = torch.utils.data.DataLoader(test_dataset,
# batch_size=cfg.batch_size,
# shuffle=cfg.shuffle,
# num_workers=0, pin_memory=False)
def main(tiny_images=None,
model="cnn",
augment=False,
use_scattering=False,
batch_size=2048,
mini_batch_size=256,
lr=1,
lr_start=None,
optim="SGD",
momentum=0.9,
noise_multiplier=1,
max_grad_norm=0.1,
epochs=100,
bn_noise_multiplier=None,
max_epsilon=None,
data_size=550000,
delta=1e-6,
logdir=None):
logger = Logger(logdir)
device = get_device()
bs = batch_size
assert bs % mini_batch_size == 0
n_acc_steps = bs // mini_batch_size
train_data, test_data = get_data("cifar10", augment=augment)
train_loader = torch.utils.data.DataLoader(train_data,
batch_size=100,
shuffle=False,
num_workers=4,
pin_memory=True)
test_loader = torch.utils.data.DataLoader(test_data,
batch_size=100,
shuffle=False,
num_workers=4,
pin_memory=True)
if isinstance(tiny_images, torch.utils.data.Dataset):
train_data_aug = tiny_images
else:
print("loading tiny images...")
train_data_aug, _ = get_data("cifar10_500K",
augment=augment,
aux_data_filename=tiny_images)
scattering, K, (h, w) = None, None, (None, None)
pre_scattered = False
if use_scattering:
scattering, K, (h, w) = get_scatter_transform("cifar10_500K")
scattering.to(device)
# if the whole data fits in memory, pre-compute the scattering
if use_scattering and data_size <= 50000:
loader = torch.utils.data.DataLoader(train_data_aug,
batch_size=100,
shuffle=False,
num_workers=4)
train_data_aug = get_scattered_dataset(loader, scattering, device,
data_size)
pre_scattered = True
assert data_size <= len(train_data_aug)
num_sup = min(data_size, 50000)
num_batches = int(np.ceil(50000 / mini_batch_size)) # cifar-10 equivalent
train_batch_sampler = SemiSupervisedSampler(data_size, num_batches,
mini_batch_size)
train_loader_aug = torch.utils.data.DataLoader(
train_data_aug,
batch_sampler=train_batch_sampler,
num_workers=0 if pre_scattered else 4,
pin_memory=not pre_scattered)
rdp_norm = 0
if model == "cnn":
if use_scattering:
save_dir = f"bn_stats/cifar10_500K"
os.makedirs(save_dir, exist_ok=True)
bn_stats, rdp_norm = scatter_normalization(
train_loader,
scattering,
K,
device,
data_size,
num_sup,
noise_multiplier=bn_noise_multiplier,
orders=ORDERS,
save_dir=save_dir)
model = CNNS["cifar10"](K, input_norm="BN", bn_stats=bn_stats)
model = model.to(device)
if not pre_scattered:
model = nn.Sequential(scattering, model)
else:
model = CNNS["cifar10"](in_channels=3, internal_norm=False)
elif model == "linear":
save_dir = f"bn_stats/cifar10_500K"
os.makedirs(save_dir, exist_ok=True)
bn_stats, rdp_norm = scatter_normalization(
train_loader,
scattering,
K,
device,
data_size,
num_sup,
noise_multiplier=bn_noise_multiplier,
orders=ORDERS,
save_dir=save_dir)
model = ScatterLinear(K, (h, w), input_norm="BN", bn_stats=bn_stats)
model = model.to(device)
if not pre_scattered:
model = nn.Sequential(scattering, model)
else:
raise ValueError(f"Unknown model {model}")
model.to(device)
if pre_scattered:
test_loader = get_scattered_loader(test_loader, scattering, device)
print(f"model has {get_num_params(model)} parameters")
if optim == "SGD":
optimizer = torch.optim.SGD(model.parameters(),
lr=lr,
momentum=momentum)
else:
optimizer = torch.optim.Adam(model.parameters(), lr=lr)
privacy_engine = PrivacyEngine(
model,
bs,
data_size,
alphas=ORDERS,
noise_multiplier=noise_multiplier,
max_grad_norm=max_grad_norm,
)
privacy_engine.attach(optimizer)
best_acc = 0
flat_count = 0
for epoch in range(0, epochs):
print(f"\nEpoch: {epoch} ({privacy_engine.steps} steps)")
train_loss, train_acc = train(model,
train_loader_aug,
optimizer,
n_acc_steps=n_acc_steps)
test_loss, test_acc = test(model, test_loader)
if noise_multiplier > 0:
print(f"sample_rate={privacy_engine.sample_rate}, "
f"mul={privacy_engine.noise_multiplier}, "
f"steps={privacy_engine.steps}")
rdp_sgd = get_renyi_divergence(
privacy_engine.sample_rate,
privacy_engine.noise_multiplier) * privacy_engine.steps
epsilon, _ = get_privacy_spent(rdp_norm + rdp_sgd,
target_delta=delta)
epsilon2, _ = get_privacy_spent(rdp_sgd, target_delta=delta)
print(f"ε = {epsilon:.3f} (sgd only: ε = {epsilon2:.3f})")
if max_epsilon is not None and epsilon >= max_epsilon:
return
else:
epsilon = None
logger.log_epoch(epoch, train_loss, train_acc, test_loss, test_acc,
epsilon)
logger.log_scalar("epsilon/train", epsilon, epoch)
logger.log_scalar("cifar10k_loss/train", train_loss, epoch)
logger.log_scalar("cifar10k_acc/train", train_acc, epoch)
if test_acc > best_acc:
best_acc = test_acc
flat_count = 0
else:
flat_count += 1
if flat_count >= 20:
print("plateau...")
return
batch_size=BATCH_SIZE,
shuffle=True,
collate_fn=pad_collate)
model = BilstmAspectAttPool(Configs1())
initialize_weights(model)
print(model)
model = model.to(device)
criterion = nn.CrossEntropyLoss()
optimizer = optim.Adam(model.parameters(), lr=lr)
best_valid_loss = float('inf')
for epoch in range(EPOCHS):
start_time = time.time()
train_loss = train(model, train_loader, optimizer, criterion, CLIP, device)
valid_loss = evaluate(model, test_loader, criterion, device)
end_time = time.time()
epoch_mins, epoch_secs = epoch_time(start_time, end_time)
if valid_loss < best_valid_loss:
best_valid_loss = valid_loss
torch.save(model.state_dict(), model_name)
print(f'Epoch: {epoch+1:02} | Time: {epoch_mins}m {epoch_secs}s')
print(
f'\tTrain Loss: {train_loss:.3f} | Train PPL: {math.exp(train_loss):7.3f}'
)
print(
def main():
args = parse_args()
args.num_gpus = len(get_available_gpus())
eval(args.NET + '_setup')(args)
set_seed(args.seed)
setup(args)
# Create model and optimizer
if args.resume or args.eval or args.benchmark:
last_epoch, best_epoch, best_val_loss, num_params, \
enc_params, dec_params = parse_experiment(args.odir)
i = last_epoch
if args.eval or args.benchmark:
i = best_epoch
args.resume = model_at(args, i)
model, stats = tf_resume(args, i)
else:
check_overwrite(os.path.join(args.odir, 'trainlog.txt'))
model = eval(args.NET + '_create_model')(args)
stats = []
print('Will save to ' + args.odir)
if not os.path.exists(args.odir):
os.makedirs(args.odir)
if not os.path.exists(args.odir + '/models'):
os.makedirs(args.odir + '/models')
with open(os.path.join(args.odir, 'cmdline.txt'), 'w') as f:
f.write(" ".join([
"'" + a + "'" if (len(a) == 0 or a[0] != '-') else a
for a in sys.argv
]))
args.model = model
args.step = eval(args.NET + '_step')
# Training loop
epoch = args.start_epoch
train_data_queue, train_data_processes = data_setup(args,
'train',
args.nworkers,
repeat=True)
if args.eval == 0:
for epoch in range(args.start_epoch, args.epochs):
print('Epoch {}/{} ({}):'.format(epoch + 1, args.epochs,
args.odir))
loss = train(args, epoch, train_data_queue,
train_data_processes)[0]
if (epoch +
1) % args.test_nth_epoch == 0 or epoch + 1 == args.epochs:
loss_val = test('val', args)[0]
print('-> Train Loss: {}, \tVal loss: {}'.format(
loss, loss_val))
stats.append({
'epoch': epoch + 1,
'loss': loss,
'loss_val': loss_val
})
else:
loss_val = 0
print('-> Train loss: {}'.format(loss))
stats.append({'epoch': epoch + 1, 'loss': loss})
if (epoch +
1) % args.save_nth_epoch == 0 or epoch + 1 == args.epochs:
with open(os.path.join(args.odir, 'trainlog.txt'),
'w') as outfile:
json.dump(stats, outfile)
save_model(args, epoch)
if (epoch +
1) % args.test_nth_epoch == 0 and epoch + 1 < args.epochs:
split = 'val'
predictions = samples(split, args, 20)
cache_pred(predictions, split, args)
metrics(split, args, epoch)
if math.isnan(loss): break
if len(stats) > 0:
with open(os.path.join(args.odir, 'trainlog.txt'), 'w') as outfile:
json.dump(stats, outfile)
kill_data_processes(train_data_queue, train_data_processes)
split = 'val'
predictions = samples(split, args, 20)
cache_pred(predictions, split, args)
metrics(split, args, epoch)
if args.benchmark:
benchmark_results('test', args)
def fit(self, X, y):
x_train, x_valid, y_train, y_valid = train_test_split(X,
y,
test_size=0.2)
# from some github repo...
torch.multiprocessing.set_sharing_strategy('file_system')
args = self.args
args.input_dim = X.shape[1]
args.output_dim = 1
args.task = 'regression'
use_cuda = not args.no_cuda and torch.cuda.is_available()
torch.manual_seed(args.seed)
np.random.seed(args.seed)
device = torch.device("cuda" if use_cuda else "cpu")
self.device = device
train_loader = basic_loader(x_train, y_train, args.batch_size)
valid_loader = basic_loader(x_valid,
y_valid,
args.batch_size,
train_shuffle=False)
# train_loader, valid_loader, test_loader = get_data_loaders(args.dataset, args.batch_size,
# sub_task=args.sub_task, dim=args.input_dim)
# if args.dataset in ['sider_split/', 'tox21_split/']:
# args.dataset = args.dataset[:-1] + '-' + str(args.sub_task)
print('batch number: train={}, valid={}'.format(
len(train_loader), len(valid_loader)))
model = Net(input_dim=args.input_dim,
output_dim=args.output_dim,
hidden_dim=args.hidden_dim,
num_layer=args.depth,
num_back_layer=args.back_n,
dense=True,
drop_type=args.drop_type,
net_type=args.net_type,
approx=args.anneal,
device=device).to(device)
self.model = model
if args.optimizer == 'SGD':
optimizer = optim.SGD(model.parameters(),
lr=args.lr,
momentum=args.momentum,
nesterov=True)
elif args.optimizer == 'AMSGrad':
optimizer = optim.Adam(model.parameters(),
lr=args.lr,
amsgrad=True)
scheduler = StepLR(optimizer,
step_size=args.lr_step_size,
gamma=args.gamma)
best_score = -1e30
start_epoch = 1 # start from epoch 1 or last checkpoint epoch
if args.anneal == 'approx':
args.net_type = 'approx_' + args.net_type
best_model_name = './checkpoint/{}/{}/best_seed{}_depth{}_ckpt.t7'.format(
args.dataset.strip('/'), args.net_type, args.seed, args.depth)
last_model_name = './checkpoint/{}/{}/last_seed{}_depth{}_ckpt.t7'.format(
args.dataset.strip('/'), args.net_type, args.seed, args.depth)
best_log_file = 'log/' + args.dataset.strip(
'/') + '/{}/depth{}_backn{}_drop{}_p{}_best.log'.format(
args.net_type, args.depth, args.back_n, args.drop_type, args.p)
last_log_file = 'log/' + args.dataset.strip(
'/') + '/{}/depth{}_backn{}_drop{}_p{}_last.log'.format(
args.net_type, args.depth, args.back_n, args.drop_type, args.p)
model_dir = './checkpoint/{}/{}/'.format(args.dataset.strip('/'),
args.net_type)
if not os.path.exists(model_dir):
os.makedirs(model_dir)
log_dir = 'log/' + args.dataset.strip('/') + '/{}/'.format(
args.net_type)
if not os.path.exists(log_dir):
os.makedirs(log_dir)
if not os.path.isdir('checkpoint'):
os.mkdir('checkpoint')
for epoch in range(start_epoch, args.epochs + start_epoch):
scheduler.step(epoch)
alpha = get_alpha(epoch, args.epochs)
train_approximate_loss = train(args, model, device, train_loader,
optimizer, epoch, args.anneal,
alpha)
# used for plotting learning curves
train_loss, train_score = test(args, model, device, train_loader,
'train')
valid_loss, valid_score = test(args, model, device, valid_loader,
'valid')
# test_loss, test_score = test(args, model, device, test_loader, 'test')
print(train_score, valid_score)
# early stopping version
if valid_score > best_score:
self.best_state = model.state_dict()
state = {'model': model.state_dict()}
torch.save(state, best_model_name)
best_score = valid_score
# "convergent" version
state = {'model': model.state_dict()}
torch.save(state, last_model_name)
# print('Training finished. Loading models from validation...')
# for model_name, log_file, setting in zip([best_model_name, last_model_name], [best_log_file, last_log_file],
# ['best', 'last']):
# print('\nLoading the {} model...'.format(setting))
#
# checkpoint = torch.load(model_name)
# model.load_state_dict(checkpoint['model'])
# train_loss, train_score = test(args, model, device, train_loader, 'train')
# valid_loss, valid_score = test(args, model, device, valid_loader, 'valid')
# test_loss, test_score = test(args, model, device, test_loader, 'test ')
return self
def main(dataset,
augment=False,
use_scattering=False,
size=None,
batch_size=2048,
mini_batch_size=256,
sample_batches=False,
lr=1,
optim="SGD",
momentum=0.9,
nesterov=False,
noise_multiplier=1,
max_grad_norm=0.1,
epochs=100,
input_norm=None,
num_groups=None,
bn_noise_multiplier=None,
max_epsilon=None,
logdir=None,
early_stop=True,
seed=0):
torch.manual_seed(seed)
logger = Logger(logdir)
device = get_device()
train_data, test_data = get_data(dataset, augment=augment)
if use_scattering:
scattering, K, _ = get_scatter_transform(dataset)
scattering.to(device)
else:
scattering = None
K = 3 if len(train_data.data.shape) == 4 else 1
bs = batch_size
assert bs % mini_batch_size == 0
n_acc_steps = bs // mini_batch_size
# Batch accumulation and data augmentation with Poisson sampling isn't implemented
if sample_batches:
assert n_acc_steps == 1
assert not augment
train_loader = torch.utils.data.DataLoader(train_data,
batch_size=mini_batch_size,
shuffle=True,
num_workers=1,
pin_memory=True)
test_loader = torch.utils.data.DataLoader(test_data,
batch_size=mini_batch_size,
shuffle=False,
num_workers=1,
pin_memory=True)
rdp_norm = 0
if input_norm == "BN":
# compute noisy data statistics or load from disk if pre-computed
save_dir = f"bn_stats/{dataset}"
os.makedirs(save_dir, exist_ok=True)
bn_stats, rdp_norm = scatter_normalization(
train_loader,
scattering,
K,
device,
len(train_data),
len(train_data),
noise_multiplier=bn_noise_multiplier,
orders=ORDERS,
save_dir=save_dir)
model = CNNS[dataset](K, input_norm="BN", bn_stats=bn_stats, size=size)
else:
model = CNNS[dataset](K,
input_norm=input_norm,
num_groups=num_groups,
size=size)
model.to(device)
if use_scattering and augment:
model = nn.Sequential(scattering, model)
train_loader = torch.utils.data.DataLoader(train_data,
batch_size=mini_batch_size,
shuffle=True,
num_workers=1,
pin_memory=True,
drop_last=True)
else:
# pre-compute the scattering transform if necessery
train_loader = get_scattered_loader(train_loader,
scattering,
device,
drop_last=True,
sample_batches=sample_batches)
test_loader = get_scattered_loader(test_loader, scattering, device)
print(f"model has {get_num_params(model)} parameters")
if optim == "SGD":
optimizer = torch.optim.SGD(model.parameters(),
lr=lr,
momentum=momentum,
nesterov=nesterov)
else:
optimizer = torch.optim.Adam(model.parameters(), lr=lr)
privacy_engine = PrivacyEngine(
model,
batch_size=bs,
sample_size=len(train_data),
alphas=ORDERS,
noise_multiplier=noise_multiplier,
max_grad_norm=max_grad_norm,
)
privacy_engine.attach(optimizer)
best_acc = 0
flat_count = 0
results = dict(train_zeon=[],
train_xent=[],
test_zeon=[],
test_xent=[],
epoch=[])
for epoch in range(0, epochs):
print(f"\nEpoch: {epoch}")
train_loss, train_acc = train(model,
train_loader,
optimizer,
n_acc_steps=n_acc_steps)
test_loss, test_acc = test(model, test_loader)
results['train_zeon'].append(train_acc)
results['train_xent'].append(train_loss)
results['test_zeon'].append(test_acc)
results['test_xent'].append(test_loss)
results['epoch'].append(epoch)
if noise_multiplier > 0:
rdp_sgd = get_renyi_divergence(
privacy_engine.sample_rate,
privacy_engine.noise_multiplier) * privacy_engine.steps
epsilon, _ = get_privacy_spent(rdp_norm + rdp_sgd)
epsilon2, _ = get_privacy_spent(rdp_sgd)
print(f"ε = {epsilon:.3f} (sgd only: ε = {epsilon2:.3f})")
if max_epsilon is not None and epsilon >= max_epsilon:
return
else:
epsilon = None
logger.log_epoch(epoch, train_loss, train_acc, test_loss, test_acc,
epsilon)
logger.log_scalar("epsilon/train", epsilon, epoch)
# stop if we're not making progress
if test_acc > best_acc:
best_acc = test_acc
flat_count = 0
else:
flat_count += 1
if flat_count >= 20 and early_stop:
print("plateau...")
break
# Write to file.
record = {
**results,
**{
'best_acc': best_acc,
'seed': seed,
'dataset': dataset
}
}
record_path = os.path.join('.', 'record', f'{dataset}-{seed}.json')
os.makedirs(os.path.dirname(record_path), exist_ok=True)
with open(record_path, 'w') as f:
json.dump(record, f, indent=4)
import logging
logging.warning(f'Wrote to file: {record_path}')
########################################################################
batch_size = 400 # calculate batch_size
load_batch = 100 # load batch_size(not calculate)
device = torch.device("cuda:0") # device
lr = 0.001 # learning_rate
# load train and test name , train:test=4:1
if os.path.exists(r'./train_test_names.data'):
train_test = pickle.load(open('./train_test_names.data', "rb"))
else:
train_test = train_utils.get_train_test_name(dns_home)
train_noisy_names, train_clean_names, test_noisy_names, test_clean_names = \
train_utils.get_all_names(train_test, dns_home=dns_home)
train_dataset = loader.WavDataset(train_noisy_names, train_clean_names, frame_dur=37.5)
test_dataset = loader.WavDataset(test_noisy_names, test_clean_names, frame_dur=37.5)
# dataloader
train_dataloader = DataLoader(train_dataset, batch_size=load_batch, shuffle=True)
test_dataloader = DataLoader(test_dataset, batch_size=load_batch, shuffle=True)
dccrn = model_cov_bn.DCCRN_(
n_fft=512, hop_len=int(6.25 * 16000 / 1000), net_params=net_config.get_net_params(), batch_size=batch_size,
device=device, win_length=int((25 * 16000 / 1000))).to(device)
optimizer = torch.optim.Adam(dccrn.parameters(), lr=lr)
criterion = SiSnr()
train_utils.train(model=dccrn, optimizer=optimizer, criterion=criterion, train_iter=train_dataloader,
test_iter=test_dataloader, max_epoch=500, device=device, batch_size=batch_size, log_path=save_file,
just_test=False)
args = parser.parse_args()
cifar_dir = args.cifar_root
fig_path = args.fig_path
validation_split = args.val_split
batch_size = args.batch_size
epochs = args.epochs
weight_path = args.weight_path
weight_decay = args.weight_decay
lr = args.lr
SEED = args.seed # set random seed (default as 1234)
# split train, val, test from `get_data` function
train_loader, val_loader, test_loader = get_data(cifar_dir=cifar_dir, batch_size=batch_size, augment=True, validation_split=validation_split)
# load model
model = VGG_lite()
# define loss
loss = nn.CrossEntropyLoss()
# train the model
model, history = train(model, train_loader, val_loader, epochs, loss, batch_size, optimizer='adam', weight_decay=weight_decay, lr=lr)
# save the model accordeing to `weight_path` from parser (default to './weights/final.pth')
torch.save(model.state_dict(), weight_path)
plot_history(history, fig_path) # save figures
acc, cm, cm_norm = evaluate(model, test_loader) # evaluate trained model
plot_cm(cm, cm_norm, fig_path) # save confusion matrix figures
print('Test Accuracy: {}%'.format(round(acc*100, 4))) # print the model test accuracy
def my_main(
_run,
lr,
weight_decay,
message,
use_gpu,
epochs,
save_images,
experiment_folder,
batch_size,
save_exp,
):
print("Epochs: {}".format(epochs))
# args["seed"] = _run.config["seed"]
device = torch.device("cuda" if use_gpu else "cpu")
dataloader_kwargs = {"pin_memory": True} if use_gpu else {}
# if save_exp:
os.makedirs(experiment_folder + "outputs/color")
os.makedirs(experiment_folder + "outputs/gray")
os.makedirs(experiment_folder + "checkpoints")
best_losses = 1e10
seed = int(time.time())
args = {
"num_processes": 4,
"batch_size": 64,
"lr": lr,
"weight_decay": weight_decay,
"log_interval": 100,
"use_gpu": use_gpu,
"epochs": epochs,
"seed": seed,
"experiment_folder": experiment_folder,
}
train_folder = "places365_standard/train"
val_folder = "places365_standard/val"
trained = False
options = dict({"num_classes": (2 * 224 * 224)})
model = AlexNet().to(device)
print(model)
# model = nn.DataParallel(model)
# model.share_memory() # gradients are allocated lazily, so they are not shared here
processes = []
time1 = time.time()
train(
1,
args,
model,
device,
dataloader_kwargs,
train_folder,
nn.CrossEntropyLoss,
val_folder,
)
time2 = time.time()
print("{:s} function took {:.3f} ms".format("train",
(time2 - time1) * 1000.0))
def main(feature_path=None,
batch_size=2048,
mini_batch_size=256,
lr=1,
optim="SGD",
momentum=0.9,
nesterov=False,
noise_multiplier=1,
max_grad_norm=0.1,
max_epsilon=None,
epochs=100,
logdir=None):
logger = Logger(logdir)
device = get_device()
# get pre-computed features
x_train = np.load(f"{feature_path}_train.npy")
x_test = np.load(f"{feature_path}_test.npy")
train_data, test_data = get_data("cifar10", augment=False)
y_train = np.asarray(train_data.targets)
y_test = np.asarray(test_data.targets)
trainset = torch.utils.data.TensorDataset(torch.from_numpy(x_train),
torch.from_numpy(y_train))
testset = torch.utils.data.TensorDataset(torch.from_numpy(x_test),
torch.from_numpy(y_test))
bs = batch_size
assert bs % mini_batch_size == 0
n_acc_steps = bs // mini_batch_size
train_loader = torch.utils.data.DataLoader(trainset,
batch_size=mini_batch_size,
shuffle=True,
num_workers=1,
pin_memory=True,
drop_last=True)
test_loader = torch.utils.data.DataLoader(testset,
batch_size=mini_batch_size,
shuffle=False,
num_workers=1,
pin_memory=True)
n_features = x_train.shape[-1]
try:
mean = np.load(f"{feature_path}_mean.npy")
var = np.load(f"{feature_path}_var.npy")
except FileNotFoundError:
mean = np.zeros(n_features, dtype=np.float32)
var = np.ones(n_features, dtype=np.float32)
bn_stats = (torch.from_numpy(mean).to(device),
torch.from_numpy(var).to(device))
model = nn.Sequential(StandardizeLayer(bn_stats),
nn.Linear(n_features, 10)).to(device)
if optim == "SGD":
optimizer = torch.optim.SGD(model.parameters(),
lr=lr,
momentum=momentum,
nesterov=nesterov)
else:
optimizer = torch.optim.Adam(model.parameters(), lr=lr)
privacy_engine = PrivacyEngine(
model,
sample_rate=bs / len(train_data),
alphas=ORDERS,
noise_multiplier=noise_multiplier,
max_grad_norm=max_grad_norm,
)
privacy_engine.attach(optimizer)
for epoch in range(0, epochs):
print(f"\nEpoch: {epoch}")
train_loss, train_acc = train(model,
train_loader,
optimizer,
n_acc_steps=n_acc_steps)
test_loss, test_acc = test(model, test_loader)
if noise_multiplier > 0:
rdp_sgd = get_renyi_divergence(
privacy_engine.sample_rate,
privacy_engine.noise_multiplier) * privacy_engine.steps
epsilon, _ = get_privacy_spent(rdp_sgd)
print(f"ε = {epsilon:.3f}")
if max_epsilon is not None and epsilon >= max_epsilon:
return
else:
epsilon = None
logger.log_epoch(epoch, train_loss, train_acc, test_loss, test_acc,
epsilon)
start = time.time()
now = datetime.datetime.today().strftime("%Y-%m-%d %H:%M:%S")
# 학습 정보 출력
print("----------------")
print("학습을 시작합니다.")
print("현재 시각:", now)
print("학습 데이터 : %d개" % len(train_data))
print("----------------")
print()
# 학습 시작
try:
for iter in range(1, n_iter + 1):
input, target = get_batch_set()
loss = train(input, target)
total_loss += loss
# 현재 학습 과정 출력
if iter % print_every == 0:
avg_loss = total_loss / print_every
sys.stdout.write(
"%d %d%% (%s) %.4f\n" %
(iter, iter / n_iter * 100, time_since(start), avg_loss))
losses.append(avg_loss)
total_loss = 0
lyrics = generate_lyrics(['사랑', '발라드'])
print(lyrics)
print()
sys.stdout.write("학습이 완료되었습니다.\n")
def trainEvalLM(args):
fn = 'corpus.{}.data'.format(hashlib.md5(args.data.encode()).hexdigest())
if os.path.exists(fn):
print('Loading cached dataset...')
corpus = torch.load(fn)
else:
print('Producing dataset...')
corpus = data.Corpus(args.data)
torch.save(corpus, fn)
if torch.cuda.is_available():
args.cuda = True
ntokens = len(corpus.dictionary)
eval_batch_size = 10
train_data = batchify(corpus.train, args.batch_size, args)
val_data = batchify(corpus.valid, eval_batch_size, args)
# Build the model and loss function
model = lmModel.RNNModel(args.model,
ntokens,
args.emsize,
args.nhid,
args.nlayers,
args.dropout,
args.tied,
g=args.g,
k=args.k)
criterion = nn.CrossEntropyLoss()
if torch.cuda.is_available():
model = model.cuda()
criterion = criterion.cuda()
#compute network parameters
params = list(model.parameters())
total_params = np.sum([np.prod(p.size()) for p in params])
print(
'\033[1;32;40mTotal parameters (in million):\033[0m\033[1;31;40m {:0.2f} \033[0m\n'
.format(total_params / 1e6, 2))
optimizer = torch.optim.SGD(params, lr=args.lr, weight_decay=args.wdecay)
start_epoch = 1
if args.resume:
print('Resuming model ...')
model, criterion, optimizer, start_epoch = model_load(args.resume)
optimizer.param_groups[0]['lr'] = args.lr
model.dropout = args.dropout
# At any point you can hit Ctrl + C to break out of training early.
try:
#Create folder for saving model and log files
args.saveDir += '_' + args.model
# =====================
if not os.path.isdir(args.saveDir):
os.mkdir(args.saveDir)
save_str = 'nl_' + str(args.nlayers) + '_nh_' + str(
args.nhid) + '_g_' + str(args.g) + '_k_' + str(args.k)
args.save = args.saveDir + '/model_' + save_str + '.pt'
logFileLoc = args.saveDir + '/logs_' + save_str + '.txt'
logger = open(logFileLoc, 'w')
logger.write(str(args))
logger.write('\n Total parameters (in million): {:0.2f}'.format(
total_params / 1e6, 2))
logger.write('\n\n')
logger.write(
"\n%s\t%s\t%s\t%s\t%s" %
('Epoch', 'Loss(Tr)', 'Loss(val)', 'ppl (tr)', 'ppl (val)'))
logger.flush()
best_val_loss = []
stored_loss = 100000000
# Loop over epochs.
for epoch in range(start_epoch, args.epochs + 1):
epoch_start_time = time.time()
train_loss = train(args, model, criterion, optimizer, epoch,
train_data, ntokens)
### TRAIN WITH ASGD
if 't0' in optimizer.param_groups[0]:
tmp = {}
for prm in model.parameters():
tmp[prm] = prm.data.clone()
prm.data = optimizer.state[prm]['ax'].clone()
val_loss = evaluate(args, model, criterion, val_data, ntokens,
eval_batch_size)
print('-' * 89)
print(
'| end of epoch {:3d} | time: {:5.2f}s | valid loss {:5.2f} | '
'valid ppl {:8.2f}'.format(
epoch, (time.time() - epoch_start_time), val_loss,
math.exp(val_loss)))
print('-' * 89)
logger.write("\n%d\t\t%.4f\t\t%.4f\t\t%.4f\t\t%.4f" %
(epoch, train_loss, val_loss,
math.exp(train_loss), math.exp(val_loss)))
logger.flush()
if val_loss < stored_loss:
model_save(args.save, model, criterion, optimizer, epoch)
print('Saving Averaged (new best validation)')
stored_loss = val_loss
for prm in model.parameters():
prm.data = tmp[prm].clone()
else:
val_loss = evaluate(args, model, criterion, val_data, ntokens,
eval_batch_size)
print('-' * 89)
print(
'| end of epoch {:3d} | time: {:5.2f}s | valid loss {:5.2f} | '
'valid ppl {:8.2f}'.format(
epoch, (time.time() - epoch_start_time), val_loss,
math.exp(val_loss)))
print('-' * 89)
logger.write("\n%d\t\t%.4f\t\t%.4f\t\t%.4f\t\t%.4f" %
(epoch, train_loss, val_loss,
math.exp(train_loss), math.exp(val_loss)))
logger.flush()
if val_loss < stored_loss:
model_save(args.save, model, criterion, optimizer, epoch)
print('Saving model (new best validation)')
stored_loss = val_loss
if 't0' not in optimizer.param_groups[0] and (
len(best_val_loss) > args.nonmono
and val_loss > min(best_val_loss[:-args.nonmono])):
print('Switching to ASGD')
optimizer = torch.optim.ASGD(model.parameters(),
lr=args.lr,
t0=0,
lambd=0.,
weight_decay=args.wdecay)
best_val_loss.append(val_loss)
except KeyboardInterrupt:
print('-' * 89)
print('Exiting from training early')
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--DATASET_PATH', type=str, default='/home/zhangdong/database/DUTS/')
parser.add_argument('--WEIGHTS_PATH', type=str, default='/home/yangle/DAVIS/result/models/')
parser.add_argument('--EXPERIMENT', type=str, default='/home/yangle/DAVIS/result/TrainNet/')
parser.add_argument('--N_EPOCHS', type=int, default=200)
parser.add_argument('--MAX_PATIENCE', type=int, default=30)
parser.add_argument('--batch_size', type=int, default=32)
parser.add_argument('--seed', type=int, default=0)
parser.add_argument('--N_CLASSES', type=int, default=2)
parser.add_argument('--LEARNING_RATE', type=float, default=1e-4)
parser.add_argument('--LR_DECAY', type=float, default=0.995)
parser.add_argument('--DECAY_LR_EVERY_N_EPOCHS', type=int, default=1)
parser.add_argument('--WEIGHT_DECAY', type=float, default=0.0001)
parser.add_argument('--CUDNN', type=bool, default=True)
args = parser.parse_args()
torch.cuda.manual_seed(args.seed)
cudnn.benchmark = args.CUDNN
normalize = transforms.Normalize(mean=saliency.mean, std=saliency.std)
train_joint_transformer_img = transforms.Compose([joint_transforms.JointResize(224)])
mask_size_list = [14, 28, 56, 112, 224]
train_dset = saliency.Saliency(
args.DATASET_PATH, 'train',train_joint_transformer_img, mask_size_list,
transform=transforms.Compose([transforms.ToTensor(), normalize, ]))
train_loader = torch.utils.data.DataLoader(
train_dset, batch_size=args.batch_size, shuffle=True)
test_joint_transforms_img = transforms.Compose([joint_transforms.JointResize(224)])
val_dset = saliency.Saliency(
args.DATASET_PATH, 'val',test_joint_transforms_img, mask_size_list,
transform=transforms.Compose([transforms.ToTensor(),normalize]))
val_loader = torch.utils.data.DataLoader(
val_dset, batch_size=args.batch_size, shuffle=False)
print("TrainImages: %d" % len(train_loader.dataset.imgs))
print("ValImages: %d" % len(val_loader.dataset.imgs))
# example_inputs, example_targets = next(iter(train_loader))
# print("InputsBatchSize: ", example_inputs.size())
# print("TargetsBatchSize: ", len(example_targets))
# print("\nInput (size, max, min) ---")
# # input
# i = example_inputs[0]
# print(i.size())
# print(i.max())
# print(i.min())
# print("Target (size, max, min) ---")
# # target
# for mask in example_targets:
# print(mask.size())
# print(mask.max())
# print(mask.min())
# initialize ResNet18 from the pre-trained classification model
resnet = torchvision.models.resnet50(pretrained=True)
pre_trained_dict = resnet.state_dict()
model = SegNet.resnet50()
model_dict = model.state_dict()
# 1. filter out unnecessary keys
pre_trained_dict = {k: v for k, v in pre_trained_dict.items() if k in model_dict}
# 2. overwrite entries in the existing state dict
model_dict.update(pre_trained_dict)
# 3. load the new state dict
model.load_state_dict(model_dict)
model = model.cuda()
#model = torch.nn.DataParallel(model).cuda()
print(' + Number of params: {}'.format(
sum([p.data.nelement() for p in model.parameters()])))
# model.apply(utils.weights_init)
optimizer = optim.RMSprop(model.parameters(), lr=args.LEARNING_RATE,
weight_decay=args.WEIGHT_DECAY, eps=1e-12)
criterion = nn.NLLLoss2d().cuda()
exp_dir = args.EXPERIMENT + 'test'
if os.path.exists(exp_dir):
shutil.rmtree(exp_dir)
exp = experiment.Experiment('test', args.EXPERIMENT)
exp.init()
START_EPOCH = exp.epoch
END_EPOCH = START_EPOCH + args.N_EPOCHS
for epoch in range(START_EPOCH, END_EPOCH):
since = time.time()
# ### Train ###
trn_loss, trn_err = utils.train(model, train_loader, optimizer, criterion, epoch)
print('Epoch {:d}: Train - Loss: {:.4f}\tErr: {:.4f}'.format(epoch, trn_loss, trn_err))
time_elapsed = time.time() - since
print('Train Time {:.0f}m {:.0f}s'.format(
time_elapsed // 60, time_elapsed % 60))
### Test ###
val_loss, val_err = utils.test(model, val_loader, criterion, epoch)
print('Val - Loss: {:.4f}, Error: {:.4f}'.format(val_loss, val_err))
time_elapsed = time.time() - since
print('Total Time {:.0f}m {:.0f}s\n'.format(
time_elapsed // 60, time_elapsed % 60))
### Save Metrics ###
exp.save_history('train', trn_loss, trn_err)
exp.save_history('val', val_loss, val_err)
### Checkpoint ###
exp.save_weights(model, trn_loss, val_loss, trn_err, val_err)
exp.save_optimizer(optimizer, val_loss)
## Early Stopping ##
if (epoch - exp.best_val_loss_epoch) > args.MAX_PATIENCE:
print(("Early stopping at epoch %d since no "
+"better loss found since epoch %.3").format(epoch, exp.best_val_loss))
break
# Adjust Lr ###--old method
utils.adjust_learning_rate(args.LEARNING_RATE, args.LR_DECAY, optimizer,
epoch, args.DECAY_LR_EVERY_N_EPOCHS)
exp.epoch += 1
default=10,
help='The number of iterations between every logging.')
parser.add_argument(
'--loaderjob',
type=int,
default=4,
help='The number of processes to launch for MultiprocessIterator.')
parser.add_argument(
'--resume',
help='The path to the trainer snapshot to resume from. '
'If unspecified, no snapshot will be resumed')
args = parser.parse_args()
with open(args.label_names, 'r') as f:
label_names = tuple(yaml.load(f))
if args.val is not None:
train_data = OriginalDetectionDataset(args.train, label_names)
val_data = OriginalDetectionDataset(args.val, label_names)
else:
# If --val is not supplied, the train data is split into two
# with ratio 8:2.
dataset = OriginalDetectionDataset(args.train, label_names)
train_data, val_data = chainer.datasets.split_dataset_random(
dataset, int(len(dataset) * 0.8))
step_points = [args.step_size]
train(train_data, val_data, label_names, args.iteration, args.lr,
step_points, args.batchsize, args.gpu, args.out, args.val_iteration,
args.log_iteration, args.loaderjob, args.resume)
# In[18]:
# Main
optimizer = optim.Adam(model.parameters(), lr=args.lr)
info = {'highest F1': 100, 'saved epoch': None}
# In[19]:
print('STARTING TRAINING')
for epoch in range(1, args.epochs + 1):
train(args,
model,
device,
train_loader,
optimizer,
epoch,
start_time=time.time())
f1 = get_mean_F1(model, validation_loader)
print('after epoch {} got f1 score of {}'.format(epoch, f1))
if f1 > info['highest F1']:
info['highest F1'] = np.copy(f1)
info['saved epoch'] = epoch
test(args, model, device, test_loader, epoch, trainDataset,
testDataset, path_submission)
torch.save(model, path_model)
print('currently best model --> saved')
print('TRAINING DONE')
print(info)
if args.snapshot is not None:
vocab = pickle.load(open(args.snapshot + '.vocab', 'rb'))
else:
vocab = None
# load data
train_data_dict, dev_data_dict, test_data_dict, vocab = data_utils.load_dataset(args, vocab)
# Load model
model = model_utils.get_model(vocab, args)
if args.mode == 'train_r2a':
'''
Training R2A on labeled source and unlabeled target
'''
dev_res, saved_path, model = train_utils.train(train_data_dict, dev_data_dict, model, args)
# saving the vocabulary
if args.save:
with open(saved_path+'.vocab', 'wb') as f:
pickle.dump(vocab, f, pickle.HIGHEST_PROTOCOL)
# evaluate performance on the source train & dev set
tar_train = None if args.tar_dataset == '' else train_data_dict[args.tar_dataset]
tar_dev = None if args.tar_dataset == '' else dev_data_dict[args.tar_dataset]
print("\n=== train ====")
train_res = []
for task in args.src_dataset:
cur_res = train_utils.evaluate_task(
train_data_dict[task], task, tar_train, model, None, args)
# ------------------------------------------------------------------------
if args.snapshot is None:
model = model_utils.get_model(vocab, args)
else:
# load saved model
print('\nLoading model from [%s]...' % args.snapshot)
try:
model = torch.load(args.snapshot)
except Exception as e:
print(e)
exit(1)
print("Load complete")
# Train the model on train_data, use dev_data for early stopping
model, dev_res = train_utils.train(train_data, dev_data, model, args)
# Evaluate the trained model
print("Evaluate on train set")
train_res = train_utils.evaluate(train_data, model, args)
print("Evaluate on test set")
test_res = train_utils.evaluate(test_data, model, args, roc=True)
if args.result_path:
directory = args.result_path[:args.result_path.rfind('/')]
if not os.path.exists(directory):
os.makedirs(directory)
result = {
'train_loss': train_res[0],
required=False,
help='Freeze the model after training.')
parser.add_argument(
'--binarization',
choices=['deterministic-binary', 'stochastic-binary', 'disabled'],
action='store',
required=False,
default='deterministic-binary',
help='binarization mode')
return parser.parse_args()
if __name__ == '__main__':
tf.set_random_seed(_RANDOM_SEED)
parsed_args = args_parser(sys.argv)
dataset = get_dataset(parsed_args.dataset, parsed_args.epochs,
parsed_args.batch_size)
train(
parsed_args.epochs, parsed_args.batch_size, dataset,
get_model_fn(parsed_args.model, parsed_args.binarization),
get_optimiser_fn(parsed_args.model, parsed_args.epochs,
parsed_args.batch_size, dataset),
parsed_args.resume_from_latest_checkpoint, parsed_args.tag,
parsed_args.freeze)