def main():
args.device = 'cuda' if torch.cuda.is_available() else 'cpu'
# Data
print('==> Preparing data..')
trainloader, testloader, args.ndata = get_data_loader()
print('==> Building model..')
net, lemniscate, optimizer, criterion, scheduler, best_acc, start_epoch = build_model(
)
if args.test_only:
kNN(net, lemniscate, trainloader, testloader, 200, args.nce_t, 1)
sys.exit(0)
for epoch in range(start_epoch, args.epochs):
scheduler.step()
train(net, optimizer, trainloader, criterion, lemniscate, epoch)
acc = kNN(net, lemniscate, trainloader, testloader, 200, args.nce_t, 0)
if acc > best_acc:
print('Saving..')
state = {
'net': net.state_dict(),
'lemniscate': lemniscate,
'acc': acc,
'epoch': epoch,
'optimizer': optimizer.state_dict(),
}
os.makedirs(args.model_dir, exist_ok=True)
torch.save(state, os.path.join(args.model_dir,
'ckpt.cifar.pth.tar'))
best_acc = acc
print('best accuracy: {:.2f}'.format(best_acc * 100))
acc = kNN(net, lemniscate, trainloader, testloader, 200, args.nce_t, 1)
print('last accuracy: {:.2f}'.format(acc * 100))
assert os.path.isdir('checkpoint'), 'Error: no checkpoint directory found!'
checkpoint = torch.load('./checkpoint/' + args.resume)
net.load_state_dict(checkpoint['net'])
lemniscate = checkpoint['lemniscate']
best_acc = checkpoint['acc']
start_epoch = checkpoint['epoch']
# define loss function
criterion = NCECriterion()
net.to(device)
lemniscate.to(device)
criterion.to(device)
if args.test_only:
acc = kNN(0, net, lemniscate, trainloader, testloader, 200, args.nce_t, 1)
sys.exit(0)
optimizer = optim.SGD(net.parameters(),
lr=args.lr,
momentum=0.9,
weight_decay=5e-4)
def adjust_learning_rate(optimizer, epoch):
"""Sets the learning rate to the initial LR decayed by 10 every 30 epochs"""
lr = args.lr
if epoch >= 20:
lr = args.lr * (0.1**((epoch - 20) // 20))
print(lr)
for param_group in optimizer.param_groups:
def main():
global args, best_prec1
args = parser.parse_args()
# init seed
my_whole_seed = 222
random.seed(my_whole_seed)
np.random.seed(my_whole_seed)
torch.manual_seed(my_whole_seed)
torch.cuda.manual_seed_all(my_whole_seed)
torch.cuda.manual_seed(my_whole_seed)
np.random.seed(my_whole_seed)
torch.backends.cudnn.deterministic = True
torch.backends.cudnn.benchmark = False
os.environ['PYTHONHASHSEED'] = str(my_whole_seed)
for kk_time in range(args.seedstart, args.seedstart + 1):
args.seed = kk_time
args.result = args.result + str(args.seed)
# create model
model = models.__dict__[args.arch](low_dim=args.low_dim,
multitask=args.multitask,
showfeature=args.showfeature,
domain=args.domain,
args=args)
model = torch.nn.DataParallel(model).cuda()
print('Number of learnable params',
get_learnable_para(model) / 1000000., " M")
# Data loading code
normalize = transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
aug = transforms.Compose([
transforms.RandomResizedCrop(224, scale=(0.2, 1.)),
transforms.RandomGrayscale(p=0.2),
transforms.ColorJitter(0.4, 0.4, 0.4, 0.4),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(), normalize
])
# aug = transforms.Compose([transforms.RandomResizedCrop(224, scale=(0.08, 1.), ratio=(3 / 4, 4 / 3)),
# transforms.RandomHorizontalFlip(p=0.5),
# get_color_distortion(s=1),
# transforms.Lambda(lambda x: gaussian_blur(x)),
# transforms.ToTensor(),
# normalize])
aug_test = transforms.Compose(
[transforms.Resize((224, 224)),
transforms.ToTensor(), normalize])
# load dataset
# import datasets.fundus_amd_syn_crossvalidation as medicaldata
import datasets.fundus_amd_syn_crossvalidation_ind as medicaldata
train_dataset = medicaldata.traindataset(root=args.data,
transform=aug,
train=True,
args=args)
train_loader = torch.utils.data.DataLoader(
train_dataset,
batch_size=args.batch_size,
shuffle=False,
pin_memory=True,
num_workers=4,
drop_last=True if args.multiaug else False,
worker_init_fn=random.seed(my_whole_seed))
valid_dataset = medicaldata.traindataset(root=args.data,
transform=aug_test,
train=False,
args=args)
val_loader = torch.utils.data.DataLoader(
valid_dataset,
batch_size=args.batch_size,
shuffle=False,
pin_memory=True,
num_workers=4,
worker_init_fn=random.seed(my_whole_seed))
# define lemniscate and loss function (criterion)
ndata = train_dataset.__len__()
lemniscate = LinearAverage(args.low_dim, ndata, args.nce_t,
args.nce_m).cuda()
if args.multitaskposrot:
cls_criterion = nn.CrossEntropyLoss().cuda()
else:
cls_criterion = None
if args.multitaskposrot:
print("running multi task with miccai")
criterion = BatchCriterion(1, 0.1, args.batch_size, args).cuda()
elif args.synthesis:
print("running synthesis")
criterion = BatchCriterionFour(1, 0.1, args.batch_size,
args).cuda()
elif args.multiaug:
print("running cvpr")
criterion = BatchCriterion(1, 0.1, args.batch_size, args).cuda()
else:
criterion = nn.CrossEntropyLoss().cuda()
optimizer = torch.optim.Adam(model.parameters(),
args.lr,
weight_decay=args.weight_decay)
# optionally resume from a checkpoint
if args.resume:
if os.path.isfile(args.resume):
print("=> loading checkpoint '{}'".format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
model.load_state_dict(checkpoint['state_dict'])
lemniscate = checkpoint['lemniscate']
optimizer.load_state_dict(checkpoint['optimizer'])
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
else:
print("=> no checkpoint found at '{}'".format(args.resume))
if args.evaluate:
knn_num = 100
auc, acc, precision, recall, f1score = kNN(args, model, lemniscate,
train_loader,
val_loader, knn_num,
args.nce_t, 2)
f = open("savemodels/result.txt", "a+")
f.write("auc: %.4f\n" % (auc))
f.write("acc: %.4f\n" % (acc))
f.write("pre: %.4f\n" % (precision))
f.write("recall: %.4f\n" % (recall))
f.write("f1score: %.4f\n" % (f1score))
f.close()
return
# mkdir result folder and tensorboard
os.makedirs(args.result, exist_ok=True)
writer = SummaryWriter("runs/" + str(args.result.split("/")[-1]))
writer.add_text('Text', str(args))
# copy code
import shutil, glob
source = glob.glob("*.py")
source += glob.glob("*/*.py")
os.makedirs(args.result + "/code_file", exist_ok=True)
for file in source:
name = file.split("/")[0]
if name == file:
shutil.copy(file, args.result + "/code_file/")
else:
os.makedirs(args.result + "/code_file/" + name, exist_ok=True)
shutil.copy(file, args.result + "/code_file/" + name)
for epoch in range(args.start_epoch, args.epochs):
lr = adjust_learning_rate(optimizer, epoch, args, [1000, 2000])
writer.add_scalar("lr", lr, epoch)
# # train for one epoch
loss = train(train_loader, model, lemniscate, criterion,
cls_criterion, optimizer, epoch, writer)
writer.add_scalar("train_loss", loss, epoch)
# save checkpoint
if epoch % 200 == 0 or (epoch in [1600, 1800, 2000]):
auc, acc, precision, recall, f1score = kNN(
args, model, lemniscate, train_loader, val_loader, 100,
args.nce_t, 2)
# save to txt
writer.add_scalar("test_auc", auc, epoch)
writer.add_scalar("test_acc", acc, epoch)
writer.add_scalar("test_precision", precision, epoch)
writer.add_scalar("test_recall", recall, epoch)
writer.add_scalar("test_f1score", f1score, epoch)
f = open(args.result + "/result.txt", "a+")
f.write("epoch " + str(epoch) + "\n")
f.write("auc: %.4f\n" % (auc))
f.write("acc: %.4f\n" % (acc))
f.write("pre: %.4f\n" % (precision))
f.write("recall: %.4f\n" % (recall))
f.write("f1score: %.4f\n" % (f1score))
f.close()
save_checkpoint(
{
'epoch': epoch,
'arch': args.arch,
'state_dict': model.state_dict(),
'lemniscate': lemniscate,
'optimizer': optimizer.state_dict(),
},
filename=args.result + "/fold" + str(args.seedstart) +
"-epoch-" + str(epoch) + ".pth.tar")
def main():
global args, best_prec1
args = parser.parse_args()
args.distributed = args.world_size > 1
if args.distributed:
dist.init_process_group(backend=args.dist_backend, init_method=args.dist_url,
world_size=args.world_size)
# create model
if args.pretrained:
print("=> using pre-trained model '{}'".format(args.arch))
model = models.__dict__[args.arch](pretrained=True)
else:
print("=> creating model '{}'".format(args.arch))
model = models.__dict__[args.arch](low_dim=args.low_dim)
if not args.distributed:
if args.arch.startswith('alexnet') or args.arch.startswith('vgg'):
model.features = torch.nn.DataParallel(model.features)
model.cuda()
else:
model = torch.nn.DataParallel(model).cuda()
else:
model.cuda()
model = torch.nn.parallel.DistributedDataParallel(model)
# Data loading code
traindir = os.path.join(args.data, 'train')
valdir = os.path.join(args.data, 'val')
normalize = transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
train_dataset = datasets.ImageFolderInstance(
traindir,
transforms.Compose([
transforms.RandomResizedCrop(224, scale=(0.2,1.)),
transforms.RandomGrayscale(p=0.2),
transforms.ColorJitter(0.4, 0.4, 0.4, 0.4),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
normalize,
]))
if args.distributed:
train_sampler = torch.utils.data.distributed.DistributedSampler(train_dataset)
else:
train_sampler = None
train_loader = torch.utils.data.DataLoader(
train_dataset, batch_size=args.batch_size, shuffle=(train_sampler is None),
num_workers=args.workers, pin_memory=True, sampler=train_sampler)
val_loader = torch.utils.data.DataLoader(
datasets.ImageFolderInstance(valdir, transforms.Compose([
transforms.Resize(256),
transforms.CenterCrop(224),
transforms.ToTensor(),
normalize,
])),
batch_size=args.batch_size, shuffle=False,
num_workers=args.workers, pin_memory=True)
# define lemniscate and loss function (criterion)
ndata = train_dataset.__len__()
if args.nce_k > 0:
lemniscate = NCEAverage(args.low_dim, ndata, args.nce_k, args.nce_t, args.nce_m).cuda()
criterion = NCECriterion(ndata).cuda()
else:
lemniscate = LinearAverage(args.low_dim, ndata, args.nce_t, args.nce_m).cuda()
criterion = nn.CrossEntropyLoss().cuda()
optimizer = torch.optim.SGD(model.parameters(), args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay)
# optionally resume from a checkpoint
if args.resume:
if os.path.isfile(args.resume):
print("=> loading checkpoint '{}'".format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
best_prec1 = checkpoint['best_prec1']
model.load_state_dict(checkpoint['state_dict'])
lemniscate = checkpoint['lemniscate']
optimizer.load_state_dict(checkpoint['optimizer'])
print("=> loaded checkpoint '{}' (epoch {})"
.format(args.resume, checkpoint['epoch']))
else:
print("=> no checkpoint found at '{}'".format(args.resume))
cudnn.benchmark = True
if args.evaluate:
kNN(0, model, lemniscate, train_loader, val_loader, 200, args.nce_t)
return
for epoch in range(args.start_epoch, args.epochs):
if args.distributed:
train_sampler.set_epoch(epoch)
adjust_learning_rate(optimizer, epoch)
# train for one epoch
train(train_loader, model, lemniscate, criterion, optimizer, epoch)
# evaluate on validation set
prec1 = NN(epoch, model, lemniscate, train_loader, val_loader)
# remember best prec@1 and save checkpoint
is_best = prec1 > best_prec1
best_prec1 = max(prec1, best_prec1)
save_checkpoint({
'epoch': epoch + 1,
'arch': args.arch,
'state_dict': model.state_dict(),
'lemniscate': lemniscate,
'best_prec1': best_prec1,
'optimizer' : optimizer.state_dict(),
}, is_best)
# evaluate KNN after last epoch
kNN(0, model, lemniscate, train_loader, val_loader, 200, args.nce_t)
def main():
global args, best_prec1
args = parser.parse_args()
args.distributed = args.world_size > 1
if args.distributed:
dist.init_process_group(backend=args.dist_backend,
init_method=args.dist_url,
world_size=args.world_size)
# create model
# if args.pretrained:
# print("=> using pre-trained model '{}'".format(args.arch))
# model = models.__dict__[args.arch](pretrained=True, finetune=args.finetune, low_dim= args.low_dim)
# else:
# print("=> creating model '{}'".format(args.arch))
#
# model = models.__dict__[args.arch](low_dim=args.low_dim)
# Data loading code
normalize = transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
# train_dataset = datasets.CombinedMaskDataset(
# other_data_path = '/home/saschaho/Simcenter/found_label_imgs',
# csv_root_folder='/home/saschaho/Simcenter/Floor_Elevation_Data/Streetview_Irma/Streetview_Irma/images',
# data_csv='/home/saschaho/Simcenter/Building_Information_Prediction/all_bims_train.csv',
# transform = transforms.Compose([
# transforms.RandomResizedCrop(224, scale=(0.2,1.)),
# transforms.RandomGrayscale(p=0.2),
# transforms.ColorJitter(0.4, 0.4, 0.4, 0.4),
# transforms.RandomHorizontalFlip(),
# transforms.ToTensor(),
# normalize,
# ]),attribute = 'first_floor_elevation_ft', mask_images=True)
# val_dataset = datasets.CombinedMaskDataset(
# csv_root_folder='/home/saschaho/Simcenter/Floor_Elevation_Data/Streetview_Irma/Streetview_Irma/images',
# data_csv='/home/saschaho/Simcenter/Building_Information_Prediction/all_bims_val.csv',
# transform=transforms.Compose([
# transforms.Resize(256),
# transforms.CenterCrop(224),
# transforms.ToTensor(),
# normalize,
# ]),
#attribute = 'first_floor_elevation_ft', mask_images=True)
train_transform = transforms.Compose([
transforms.RandomResizedCrop(224, scale=(0.3, 1.)),
transforms.RandomGrayscale(p=0.5),
transforms.ColorJitter(0.5, 0.5, 0.5, 0.5),
transforms.RandomHorizontalFlip(),
transforms.RandomVerticalFlip(),
transforms.ToTensor(), normalize
])
val_transform = transforms.Compose(
[transforms.Resize((224, 224)),
transforms.ToTensor(), normalize])
train_dataset = First_Floor_Binary(args.attribute_name,
args.train_data,
args.image_folder,
transform=train_transform,
regression=args.regression,
mask_buildings=args.mask_buildings,
softmask=args.softmask)
val_dataset = First_Floor_Binary(args.attribute_name,
args.val_data,
args.image_folder,
transform=val_transform,
regression=args.regression,
mask_buildings=args.mask_buildings,
softmask=args.softmask)
train_loader = torch.utils.data.DataLoader(train_dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.workers,
pin_memory=True)
val_loader = torch.utils.data.DataLoader(val_dataset,
batch_size=args.batch_size,
shuffle=False,
num_workers=args.workers,
pin_memory=True)
model = ResidualAttentionModel_92_Small(args.low_dim, dropout=False)
model = torch.nn.DataParallel(model).cuda()
print('Train dataset instances: {}'.format(len(train_loader.dataset)))
print('Val dataset instances: {}'.format(len(val_loader.dataset)))
# define lemniscate and loss function (criterion)
ndata = train_dataset.__len__()
if args.nce_k > 0:
lemniscate = NCEAverage(args.low_dim, ndata, args.nce_k, args.nce_t,
args.nce_m).cuda()
criterion = NCECriterion(ndata).cuda()
else:
lemniscate = LinearAverage(args.low_dim, ndata, args.nce_t,
args.nce_m).cuda()
criterion = nn.CrossEntropyLoss().cuda()
optimizer = torch.optim.SGD(model.parameters(),
args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay)
#optimizer = RAdam(model.parameters())
# optionally resume from a checkpoint
if args.resume:
if os.path.isfile(args.resume):
print("=> loading checkpoint '{}'".format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
best_prec1 = checkpoint['best_prec1']
keyname = [
keyname for keyname in model.state_dict().keys()
if 'fc.weight' in keyname
][0]
lat_vec_len_model = model.state_dict()[keyname].shape[0]
lat_vec_len_checkpoint = checkpoint['state_dict'][keyname].shape[0]
low_dim_differ = False
if lat_vec_len_model != lat_vec_len_checkpoint:
low_dim_differ = True
print(
'Warning: Latent vector sizes do not match. Assuming finetuning'
)
print(
'Lemniscate will be trained from scratch with new optimizer.'
)
del checkpoint['state_dict'][keyname]
del checkpoint['state_dict'][keyname.replace('weight', 'bias')]
missing_keys, unexpected_keys = model.load_state_dict(
checkpoint['state_dict'], strict=False)
if len(missing_keys) or len(unexpected_keys):
print('Warning: Missing or unexpected keys found.')
print('Missing: {}'.format(missing_keys))
print('Unexpected: {}'.format(unexpected_keys))
if not low_dim_differ:
# The memory bank will be trained from scratch if
# the low dim is different. Maybe later repopulated
lemniscate = checkpoint['lemniscate']
optimizer.load_state_dict(checkpoint['optimizer'])
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
else:
print("=> no checkpoint found at '{}'".format(args.resume))
cudnn.benchmark = True
if args.evaluate:
kNN(0, model, lemniscate, train_loader, val_loader, 200, args.nce_t)
return
for epoch in range(args.start_epoch, args.epochs):
# if args.distributed:
# train_sampler.set_epoch(epoch)
#adjust_learning_rate(optimizer, epoch)
# train for one epoch
train(train_loader, model, lemniscate, criterion, optimizer, epoch)
# evaluate on validation set
prec1 = NN(epoch, model, lemniscate, train_loader, val_loader)
# remember best prec@1 and save checkpoint
is_best = prec1 > best_prec1
best_prec1 = max(prec1, best_prec1)
save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': model.state_dict(),
'lemniscate': lemniscate,
'best_prec1': best_prec1,
'optimizer': optimizer.state_dict(),
}, is_best, args.name)
# evaluate KNN after last epoch
kNN(0, model, lemniscate, train_loader, val_loader, 200, args.nce_t)
def main():
global args, best_prec1, best_prec1_past, best_prec1_future
args = parser.parse_args()
args.distributed = args.world_size > 1
if args.distributed:
dist.init_process_group(backend=args.dist_backend,
init_method=args.dist_url,
world_size=args.world_size)
# create model
if args.pretrained:
print("=> using pre-trained model '{}'".format(args.arch))
model = models.__dict__[args.arch](pretrained=True)
else:
print("=> creating model '{}'".format(args.arch))
model = models.__dict__[args.arch](low_dim=args.low_dim)
if not args.distributed:
if args.arch.startswith('alexnet') or args.arch.startswith('vgg'):
model.features = torch.nn.DataParallel(model.features)
model.to(get_device(args.gpu))
else:
model = torch.nn.DataParallel(model).to(get_device(args.gpu))
else:
model.to(get_device(args.gpu))
model = torch.nn.parallel.DistributedDataParallel(model)
# Data loading code
traindir = os.path.join(args.data, 'train')
valdir = os.path.join(args.data, 'val')
normalize = transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
train_dataset = Dataset(traindir, n_frames)
val_dataset = Dataset(valdir, n_frames)
train_loader = torch.utils.data.DataLoader(
train_dataset,
batch_size=args.batch_size,
shuffle=True, #(train_sampler is None),
num_workers=args.workers)
val_loader = torch.utils.data.DataLoader(val_dataset,
batch_size=args.batch_size,
shuffle=False,
num_workers=args.workers)
# define lemniscate and loss function (criterion)
ndata = train_dataset.__len__()
if args.nce_k > 0:
lemniscate = NCEAverage(args.gpu, args.low_dim, ndata, args.nce_k,
args.nce_t,
args.nce_m).to(get_device(args.gpu))
criterion = NCECriterion(ndata).to(get_device(args.gpu))
else:
lemniscate = LinearAverage(args.low_dim, ndata, args.nce_t,
args.nce_m).to(get_device(args.gpu))
criterion = nn.CrossEntropyLoss().to(get_device(args.gpu))
optimizer = torch.optim.SGD(model.parameters(),
args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay)
# optionally resume from a checkpoint
if args.resume:
if os.path.isfile(args.resume):
print("=> loading checkpoint '{}'".format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
best_prec1 = checkpoint['best_prec1']
model.load_state_dict(checkpoint['state_dict'])
lemniscate = checkpoint['lemniscate']
optimizer.load_state_dict(checkpoint['optimizer'])
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
else:
print("=> no checkpoint found at '{}'".format(args.resume))
cudnn.benchmark = True
if args.evaluate:
kNN(0, model, lemniscate, train_loader, val_loader, 200, args.nce_t)
return
for epoch in range(args.start_epoch, args.epochs):
adjust_learning_rate(optimizer, epoch)
# train for one epoch
train(train_loader, model, lemniscate, criterion, optimizer, epoch)
# evaluate on validation set
prec1, prec1_past, prec1_future = NN(epoch, model, lemniscate,
train_loader, val_loader)
add_epoch_score('epoch_scores.txt', epoch, prec1)
add_epoch_score('epoch_scores_past.txt', epoch, prec1_past)
add_epoch_score('epoch_scores_future.txt', epoch, prec1_future)
# Sascha: This is a bug because it seems prec1 or best_prec1 is a vector at some point with
# more than one entry
# remember best prec@1 and save checkpoint
is_best = prec1 > best_prec1
best_prec1 = max(prec1, best_prec1)
save_checkpoint(
{
'epoch': epoch + 1,
'arch': args.arch,
'state_dict': model.state_dict(),
'lemniscate': lemniscate,
'best_prec1': best_prec1,
'optimizer': optimizer.state_dict(),
}, is_best, epoch)
is_best_past = prec1_past > best_prec1_past
best_prec1_past = max(prec1_past, best_prec1_past)
save_checkpoint(
{
'epoch': epoch + 1,
'arch': args.arch,
'state_dict': model.state_dict(),
'lemniscate': lemniscate,
'best_prec1_past': best_prec1_past,
'optimizer': optimizer.state_dict(),
},
is_best_past,
epoch,
best_mod='_past')
is_best_future = prec1_future > best_prec1_future
best_prec1_future = max(prec1_future, best_prec1_future)
save_checkpoint(
{
'epoch': epoch + 1,
'arch': args.arch,
'state_dict': model.state_dict(),
'lemniscate': lemniscate,
'best_prec1_future': best_prec1_future,
'optimizer': optimizer.state_dict(),
},
is_best_future,
epoch,
best_mod='_future')
# evaluate KNN after last epoch
kNN(0, model, lemniscate, train_loader, val_loader, 200, args.nce_t)
def main(args):
args.best_acc = 0
best_acc5 = 0
# Data
print('==> Preparing data..')
train_loader, test_loader, ndata = get_dataloader(args, add_erasing=args.erasing, aug_plus=args.aug_plus)
logger.info(f"length of training dataset: {ndata}")
# Model
model, model_ema = build_model(args)
contrast = MemoryMoCo(128, args.nce_k, args.nce_t, thresh=0).cuda()
criterion = NCESoftmaxLoss().cuda()
optimizer = torch.optim.SGD(model.parameters(),
lr=args.batch_size * dist.get_world_size() / 128 * args.base_learning_rate,
momentum=args.momentum,
weight_decay=args.weight_decay)
scheduler = get_scheduler(optimizer, len(train_loader), args)
if args.amp_opt_level != "O0":
if amp is None:
logger.warning(f"apex is not installed but amp_opt_level is set to {args.amp_opt_level}, ignoring.\n"
"you should install apex from https://github.com/NVIDIA/apex#quick-start first")
args.amp_opt_level = "O0"
else:
model, optimizer = amp.initialize(model, optimizer, opt_level=args.amp_opt_level)
model_ema = amp.initialize(model_ema, opt_level=args.amp_opt_level)
model = DistributedDataParallel(model, device_ids=[args.local_rank], broadcast_buffers=False)
# optionally resume from a checkpoint
if args.resume:
assert os.path.isfile(args.resume)
load_checkpoint(args, model, model_ema, contrast, optimizer, scheduler)
# tensorboard
if dist.get_rank() == 0:
summary_writer = SummaryWriter(log_dir=args.save_dir)
else:
summary_writer = None
# routine
for epoch in range(args.start_epoch, args.epochs + 1):
if args.lr_scheduler == 'cosine':
train_loader.sampler.set_epoch(epoch)
tic = time.time()
loss, prob = train_moco(epoch, train_loader, model, model_ema, contrast, criterion, optimizer, scheduler, args)
logger.info('epoch {}, total time {:.2f}'.format(epoch, time.time() - tic))
if summary_writer is not None:
# tensorboard logger
summary_writer.add_scalar('ins_loss', loss, epoch)
summary_writer.add_scalar('ins_prob', prob, epoch)
summary_writer.add_scalar('learning_rate', optimizer.param_groups[0]['lr'], epoch)
if args.dataset == 'stl10-full':
acc, acc5 = kNN(epoch, model, contrast, labeledTrainloader, test_loader, 200, args.nce_t, True)
else:
acc, acc5 = kNN(epoch, model, contrast, train_loader, test_loader, 200, args.nce_t, True)
if acc >= args.best_acc:
args.best_acc = acc
best_acc5 = acc5
logger.info('KNN top-1 precion: {:.4f} {:.4f}, best is: {:.4f} {:.4f}'.format(acc*100., \
acc5*100., args.best_acc*100., best_acc5*100))
logger.info(str(args))
if dist.get_rank() == 0:
# save model
save_checkpoint(args, epoch, model, model_ema, contrast, optimizer, scheduler, args.best_acc)
if args.dataset == 'stl10-full':
acc1, acc5 = kNN(epoch, model, contrast, labeledTrainloader, test_loader, 200, args.nce_t, True)
else:
acc1, acc5 = kNN(epoch, model, contrast, train_loader, test_loader, 200, args.nce_t, True)
logger.info('KNN top-1 and top-5 precion with recomputed memory bank: {:.4f} {:.4f}'.format(acc1*100., acc5*100))
logger.info('Best KNN top-1 and top-5 precion: {:.4f} {:.4f}'.format(args.best_acc*100., best_acc5*100))
logger.info(str(args))
start_epoch = checkpoint['epoch']
# define loss function
if hasattr(lemniscate, 'K'):
criterion = NCECriterion(ndata)
else:
criterion = nn.CrossEntropyLoss()
criterion_cld = nn.CrossEntropyLoss()
criterion_cld.to(device)
lemniscate.to(device)
criterion.to(device)
if args.test_only:
acc = kNN(0, net, lemniscate, trainloader, testloader, 200, args.nce_t, 1)
sys.exit(0)
# Training
def train(epoch):
print('\nEpoch: %d' % epoch)
torch.set_num_threads(1)
if args.lr_scheduler == 'cosine':
trainloader.sampler.set_epoch(epoch)
train_loss = AverageMeter()
data_time = AverageMeter()
batch_time = AverageMeter()
train_CLD_loss = AverageMeter()
train_CLD_acc = AverageMeter()
net = models.__dict__['ResNet50'](low_dim=args.low_dim)
# define leminiscate
lemniscate = LinearAverage(args.low_dim, ndata, args.temperature, args.memory_momentum)
# define loss function
criterion = NCACrossEntropy(torch.LongTensor(trainloader.dataset.targets))
if use_cuda:
net.cuda()
net = torch.nn.DataParallel(net, device_ids=range(torch.cuda.device_count()))
lemniscate.cuda()
criterion.cuda()
cudnn.benchmark = True
if args.test_only:
acc = kNN(0, net, lemniscate, trainloader, testloader, 30, args.temperature)
sys.exit(0)
optimizer = optim.SGD(net.parameters(), lr=args.lr, momentum=0.9, weight_decay=5e-4, nesterov=True)
def adjust_learning_rate(optimizer, epoch):
"""Sets the learning rate to the initial LR decayed by 10 every 30 epochs"""
lr = args.lr * (0.1 ** (epoch // 50))
print(lr)
for param_group in optimizer.param_groups:
param_group['lr'] = lr
# Training
def train(epoch):
print('\nEpoch: %d' % epoch)
adjust_learning_rate(optimizer, epoch)
def main(args):
# Data
print('==> Preparing data..')
_size = 32
transform_train = transforms.Compose([
transforms.Resize(size=_size),
transforms.RandomResizedCrop(size=_size, scale=(0.2, 1.)),
transforms.ColorJitter(0.4, 0.4, 0.4, 0.4),
transforms.RandomGrayscale(p=0.2),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
transforms.Normalize((0.4914, 0.4822, 0.4465),
(0.2023, 0.1994, 0.2010)),
])
transform_test = transforms.Compose([
transforms.Resize(size=_size),
transforms.ToTensor(),
transforms.Normalize((0.4914, 0.4822, 0.4465),
(0.2023, 0.1994, 0.2010)),
])
trainset = datasets.CIFAR10Instance(root='./data',
train=True,
download=True,
transform=transform_train)
trainloader = torch.utils.data.DataLoader(trainset,
batch_size=args.batch_size,
shuffle=True,
num_workers=4)
testset = datasets.CIFAR10Instance(root='./data',
train=False,
download=True,
transform=transform_test)
testloader = torch.utils.data.DataLoader(testset,
batch_size=100,
shuffle=False,
num_workers=4)
classes = ('plane', 'car', 'bird', 'cat', 'deer', 'dog', 'frog', 'horse',
'ship', 'truck')
ndata = trainset.__len__()
print('==> Building model..')
net = models.__dict__['ResNet18'](low_dim=args.low_dim)
device = 'cuda' if torch.cuda.is_available() else 'cpu'
if device == 'cuda':
net = torch.nn.DataParallel(net,
device_ids=range(
torch.cuda.device_count()))
cudnn.benchmark = True
criterion = ICRcriterion()
# define loss function: inner product loss within each mini-batch
uel_criterion = BatchCriterion(args.batch_m, args.batch_t, args.batch_size,
ndata)
net.to(device)
criterion.to(device)
uel_criterion.to(device)
best_acc = 0 # best test accuracy
start_epoch = 0 # start from epoch 0 or last checkpoint epoch
if args.test_only or len(args.resume) > 0:
# Load checkpoint.
model_path = 'checkpoint/' + args.resume
print('==> Resuming from checkpoint..')
assert os.path.isdir(
args.model_dir), 'Error: no checkpoint directory found!'
checkpoint = torch.load(model_path)
net.load_state_dict(checkpoint['net'])
best_acc = checkpoint['acc']
start_epoch = checkpoint['epoch']
# define leminiscate
if args.test_only and len(args.resume) > 0:
trainFeatures, feature_index = compute_feature(trainloader, net,
len(trainset), args)
lemniscate = LinearAverage(torch.tensor(trainFeatures), args.low_dim,
ndata, args.nce_t, args.nce_m)
else:
lemniscate = LinearAverage(torch.tensor([]), args.low_dim, ndata,
args.nce_t, args.nce_m)
lemniscate.to(device)
# define optimizer
optimizer = torch.optim.SGD(net.parameters(),
lr=args.lr,
momentum=0.9,
weight_decay=5e-4)
# optimizer2 = torch.optim.SGD(net2.parameters(), lr=args.lr, momentum=0.9, weight_decay=5e-4)
# test acc
if args.test_only:
acc = kNN(0,
net,
trainloader,
testloader,
200,
args.batch_t,
ndata,
low_dim=args.low_dim)
exit(0)
if len(args.resume) > 0:
best_acc = best_acc
start_epoch = start_epoch + 1
else:
best_acc = 0 # best test accuracy
start_epoch = 0 # start from epoch 0 or last checkpoint epoch
icr2 = ICRDiscovery(ndata)
# init_cluster_num = 20000
for round in range(5):
for epoch in range(start_epoch, 200):
#### get Features
# trainFeatures are trainloader features and shuffle=True, so feature_index is match data
trainFeatures, feature_index = compute_feature(
trainloader, net, len(trainset), args)
if round == 0:
y = -1 * math.log10(ndata) / 200 * epoch + math.log10(ndata)
cluster_num = int(math.pow(10, y))
if cluster_num <= args.nmb_cluster:
cluster_num = args.nmb_cluster
print('cluster number: ' + str(cluster_num))
###clustering algorithm to use
# faiss cluster
deepcluster = clustering.__dict__[args.clustering](
int(cluster_num))
#### Features to clustering
clustering_loss = deepcluster.cluster(trainFeatures,
feature_index,
verbose=args.verbose)
L = np.array(deepcluster.images_lists)
image_dict = deepcluster.images_dict
print('create ICR ...')
# icr = ICRDiscovery(ndata)
# if args.test_only and len(args.resume) > 0:
# icr = cluster_assign(icr, L, trainFeatures, feature_index, trainset,
# cluster_ratio + epoch*((1-cluster_ratio)/250))
icrtime = time.time()
# icr = cluster_assign(epoch, L, trainFeatures, feature_index, 1, 1)
if epoch < args.warm_epoch:
icr = cluster_assign(epoch, L, trainFeatures,
feature_index, args.cluster_ratio, 1)
else:
icr = PreScore(epoch, L, image_dict, trainFeatures,
feature_index, trainset, args.high_ratio,
args.cluster_ratio, args.alpha, args.beta)
print('calculate ICR time is: {}'.format(time.time() -
icrtime))
writer.add_scalar('icr_time', (time.time() - icrtime),
epoch + round * 200)
else:
cluster_num = args.nmb_cluster
print('cluster number: ' + str(cluster_num))
###clustering algorithm to use
# faiss cluster
deepcluster = clustering.__dict__[args.clustering](
int(cluster_num))
#### Features to clustering
clustering_loss = deepcluster.cluster(trainFeatures,
feature_index,
verbose=args.verbose)
L = np.array(deepcluster.images_lists)
image_dict = deepcluster.images_dict
print('create ICR ...')
# icr = ICRDiscovery(ndata)
# if args.test_only and len(args.resume) > 0:
# icr = cluster_assign(icr, L, trainFeatures, feature_index, trainset,
# cluster_ratio + epoch*((1-cluster_ratio)/250))
icrtime = time.time()
# icr = cluster_assign(epoch, L, trainFeatures, feature_index, 1, 1)
icr = PreScore(epoch, L, image_dict, trainFeatures,
feature_index, trainset, args.high_ratio,
args.cluster_ratio, args.alpha, args.beta)
print('calculate ICR time is: {}'.format(time.time() -
icrtime))
writer.add_scalar('icr_time', (time.time() - icrtime),
epoch + round * 200)
# else:
# icr = cluster_assign(icr, L, trainFeatures, feature_index, trainset, 0.2 + epoch*0.004)
# print(icr.neighbours)
icr2 = train(epoch, net, optimizer, lemniscate, criterion,
uel_criterion, trainloader, icr, icr2,
args.stage_update, args.lr, device, round)
print('----------Evaluation---------')
start = time.time()
acc = kNN(0,
net,
trainloader,
testloader,
200,
args.batch_t,
ndata,
low_dim=args.low_dim)
print("Evaluation Time: '{}'s".format(time.time() - start))
writer.add_scalar('nn_acc', acc, epoch + round * 200)
if acc > best_acc:
print('Saving..')
state = {
'net': net.state_dict(),
'acc': acc,
'epoch': epoch,
}
if not os.path.isdir(args.model_dir):
os.mkdir(args.model_dir)
torch.save(state,
'./checkpoint/ckpt_best_round_{}.t7'.format(round))
best_acc = acc
state = {
'net': net.state_dict(),
'acc': acc,
'epoch': epoch,
}
torch.save(state,
'./checkpoint/ckpt_last_round_{}.t7'.format(round))
print(
'[Round]: {} [Epoch]: {} \t accuracy: {}% \t (best acc: {}%)'.
format(round, epoch, acc, best_acc))
def main():
global args, best_prec1
args = parser.parse_args()
# Initialize distributed processing
args.distributed = args.world_size > 1
if args.distributed:
dist.init_process_group(backend=args.dist_backend,
init_method=args.dist_url,
world_size=args.world_size)
# create model
if args.pretrained:
print("=> using pre-trained model '{}'".format(args.arch))
model = models.__dict__[args.arch](pretrained=True,
low_dim=args.low_dim)
else:
print("=> creating model '{}'".format(args.arch))
model = models.__dict__[args.arch](low_dim=args.low_dim)
if not args.distributed:
if args.arch.startswith('alexnet') or args.arch.startswith('vgg'):
model.features = torch.nn.DataParallel(model.features)
model.cuda()
else:
model = torch.nn.DataParallel(model).cuda()
else:
model.cuda()
model = torch.nn.parallel.DistributedDataParallel(model)
# Data loading code
traindir = os.path.join(args.data, 'train')
valdir = os.path.join(args.data, 'val')
normalize = transforms.Normalize(
mean=[0.485, 0.456, 0.406], # ImageNet stats
std=[0.229, 0.224, 0.225])
# normalize = transforms.Normalize(mean=[0.234, 0.191, 0.159], # xView stats
# std=[0.173, 0.143, 0.127])
print("Creating datasets")
cj = args.color_jit
train_dataset = datasets.ImageFolderInstance(
traindir,
transforms.Compose([
transforms.Resize((224, 224)),
# transforms.Grayscale(3),
# transforms.ColorJitter(cj, cj, cj, cj), #transforms.ColorJitter(0.4, 0.4, 0.4, 0.4),
transforms.RandomHorizontalFlip(),
transforms.RandomVerticalFlip(),
transforms.RandomRotation(45),
transforms.ToTensor(),
normalize,
]))
if args.distributed:
train_sampler = torch.utils.data.distributed.DistributedSampler(
train_dataset)
elif args.balanced_sampling:
print("Using balanced sampling")
# Here's where we compute the weights for WeightedRandomSampler
class_counts = {v: 0 for v in train_dataset.class_to_idx.values()}
for path, ndx in train_dataset.samples:
class_counts[ndx] += 1
total = float(np.sum([v for v in class_counts.values()]))
class_probs = [
class_counts[ndx] / total for ndx in range(len(class_counts))
]
# make a list of class probabilities corresponding to the entries in train_dataset.samples
reciprocal_weights = [
class_probs[idx]
for i, (_, idx) in enumerate(train_dataset.samples)
]
# weights are the reciprocal of the above
weights = (1 / torch.Tensor(reciprocal_weights))
train_sampler = torch.utils.data.sampler.WeightedRandomSampler(
weights, len(train_dataset), replacement=True)
else:
#if args.red_data is < 1, then the training is done with a subsamle of the total data. Otherwise it's the total data.
data_size = len(train_dataset)
sub_index = np.random.randint(0, data_size,
round(args.red_data * data_size))
sub_index.sort()
train_sampler = torch.utils.data.sampler.SubsetRandomSampler(sub_index)
train_loader = torch.utils.data.DataLoader(train_dataset,
batch_size=args.batch_size,
shuffle=(train_sampler is None),
num_workers=args.workers,
pin_memory=True,
sampler=train_sampler)
print("Training on", len(train_dataset.imgs),
"images. Training batch size:", args.batch_size)
if len(train_dataset.imgs) % args.batch_size != 0:
print(
"Warning: batch size doesn't divide the # of training images so ",
len(train_dataset.imgs) % args.batch_size,
"images will be skipped per epoch.")
print("If you don't want to skip images, use a batch size in:",
get_factors(len(train_dataset.imgs)))
val_dataset = datasets.ImageFolderInstance(
valdir,
transforms.Compose([
transforms.Resize((224, 224)),
transforms.ToTensor(),
normalize,
]))
val_bs = [
factor for factor in get_factors(len(val_dataset)) if factor < 500
][-1]
val_bs = 100
val_loader = torch.utils.data.DataLoader(val_dataset,
batch_size=val_bs,
shuffle=False,
num_workers=args.workers,
pin_memory=True)
print("Validating on", len(val_dataset), "images. Validation batch size:",
val_bs)
# define lemniscate and loss function (criterion)
ndata = train_dataset.__len__()
if args.nce_k > 0:
lemniscate = NCEAverage(args.low_dim, ndata, args.nce_k, args.nce_t,
args.nce_m)
criterion = NCECriterion(ndata).cuda()
else:
lemniscate = LinearAverage(args.low_dim, ndata, args.nce_t,
args.nce_m).cuda()
criterion = nn.CrossEntropyLoss().cuda()
optimizer = torch.optim.SGD(model.parameters(),
args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay)
# optionally resume from a checkpoint
if args.resume:
if os.path.isfile(args.resume):
print("=> loading checkpoint '{}'".format(args.resume))
checkpoint = torch.load(args.resume)
model.load_state_dict(checkpoint['state_dict'])
optimizer = FP16_Optimizer(optimizer,
static_loss_scale=args.static_loss,
verbose=False)
optimizer.load_state_dict(checkpoint['optimizer'])
args.start_epoch = checkpoint['epoch']
# best_prec1 = checkpoint['best_prec1']
lemniscate = checkpoint['lemniscate']
if args.select_load:
pred = checkpoint['prediction']
print("=> loaded checkpoint '{}' (epoch {}, best_prec1 )".format(
args.resume,
checkpoint['epoch'])) #, checkpoint['best_prec1']))
else:
print("=> no checkpoint found at '{}'".format(args.resume))
# optionally fine-tune a model trained on a different dataset
elif args.fine_tune:
print("=> loading checkpoint '{}'".format(args.fine_tune))
checkpoint = torch.load(args.fine_tune)
model.load_state_dict(checkpoint['state_dict'])
optimizer.load_state_dict(checkpoint['optimizer'])
optimizer = FP16_Optimizer(optimizer,
static_loss_scale=args.static_loss,
verbose=False)
print("=> loaded checkpoint '{}' (epoch {})".format(
args.fine_tune, checkpoint['epoch']))
else:
optimizer = FP16_Optimizer(optimizer,
static_loss_scale=args.static_loss,
verbose=False)
# Optionally recompute memory. If fine-tuning, then we must recompute memory
if args.recompute_memory or args.fine_tune:
# Aaron - Experiments show that iterating over torch.utils.data.DataLoader will skip the last few
# unless the batch size evenly divides size of the data set. This shouldn't be the case
# according to documentation, there's even a flag for drop_last, but it's not working
# compute a good batch size for re-computing memory
memory_bs = [
factor for factor in get_factors(len(train_loader.dataset))
if factor < 500
][-1]
print("Recomputing memory using", train_dataset.root,
"with a batch size of", memory_bs)
transform_bak = train_loader.dataset.transform
train_loader.dataset.transform = val_loader.dataset.transform
temploader = torch.utils.data.DataLoader(
train_loader.dataset,
batch_size=memory_bs,
shuffle=False,
num_workers=train_loader.num_workers,
pin_memory=True)
lemniscate.memory = torch.zeros(len(train_loader.dataset),
args.low_dim).cuda()
model.eval()
with torch.no_grad():
for batch_idx, (inputs, targets,
indexes) in enumerate(tqdm.tqdm(temploader)):
batchSize = inputs.size(0)
features = model(inputs)
lemniscate.memory[batch_idx * batchSize:batch_idx * batchSize +
batchSize, :] = features.data
train_loader.dataset.transform = transform_bak
model.train()
cudnn.benchmark = True
if args.evaluate:
kNN(model, lemniscate, train_loader, val_loader, args.K, args.nce_t)
return
begin_train_time = datetime.datetime.now()
# my_knn(model, lemniscate, train_loader, val_loader, args.K, args.nce_t, train_dataset, val_dataset)
if args.tsne:
labels = idx_to_name(train_dataset, args.graph_labels)
tsne(lemniscate, args.tsne, labels)
if args.pca:
labels = idx_to_name(train_dataset, args.graph_labels)
pca(lemniscate, labels)
if args.view_knn:
my_knn(model, lemniscate, train_loader, val_loader, args.K, args.nce_t,
train_dataset, val_dataset)
if args.kmeans:
kmeans, yi = kmean(lemniscate, args.kmeans, 500, args.K, train_dataset)
D, I = kmeans.index.search(lemniscate.memory.data.cpu().numpy(), 1)
cent_group = {}
data_cent = {}
for n, i in enumerate(I):
if i[0] not in cent_group.keys():
cent_group[i[0]] = []
cent_group[i[0]].append(n)
data_cent[n] = i[0]
train_sampler = torch.utils.data.sampler.SubsetRandomSampler(
cent_group[0])
train_loader = torch.utils.data.DataLoader(
train_dataset,
batch_size=args.batch_size,
shuffle=(train_sampler is None),
num_workers=args.workers,
pin_memory=True,
sampler=train_sampler)
# lemniscate = NCEAverage(args.low_dim, ndata, args.nce_k, args.nce_t, args.nce_m)
# criterion = NCECriterion(ndata).cuda()
# lemniscate = NCEAverage(args.low_dim, ndata, args.nce_k, args.nce_t, args.nce_m)
if args.tsne_grid:
tsne_grid(val_loader, model)
if args.h_cluster:
for size in range(2, 3):
# size = 20
kmeans, topk = kmean(lemniscate, size, 500, 10, train_dataset)
respred = torch.tensor([]).cuda()
lab, idx = [[] for i in range(2)]
num = 0
'''
for p,index,label in pred:
respred = torch.cat((respred,p))
if num == 0:
lab = label
else:
lab += label
idx.append(index)
num+=1
'''
h_cluster(lemniscate, train_dataset, kmeans, topk,
size) #, respred, lab, idx)
# axis_explore(lemniscate, train_dataset)
# kmeans_opt(lemniscate, 5)
if args.select:
if not args.select_load:
pred = []
if args.select_size:
size = int(args.select_size * ndata)
else:
size = round(ndata / 100.0)
sub_sample = np.random.randint(0, ndata, size=size)
train_sampler = torch.utils.data.sampler.SubsetRandomSampler(
sub_sample)
train_loader = torch.utils.data.DataLoader(
train_dataset,
batch_size=args.batch_size,
shuffle=(train_sampler is None),
num_workers=args.workers,
pin_memory=True,
sampler=train_sampler)
pred = div_train(train_loader, model, 0, pred)
pred_features = []
pred_labels = []
pred_idx = []
for inst in pred:
feat, idx, lab = list(inst)
pred_features.append(feat)
pred_labels.append(lab)
pred_idx.append(idx.data.cpu())
if args.select_save:
save_checkpoint(
{
'epoch': args.start_epoch,
'arch': args.arch,
'state_dict': model.state_dict(),
'prediction': pred,
'lemniscate': lemniscate,
'optimizer': optimizer.state_dict(),
}, 'select.pth.tar')
min_idx = selection(pred_features, pred_idx, train_dataset,
args.select_num, args.select_thresh)
train_sampler = torch.utils.data.sampler.SubsetRandomSampler(min_idx)
train_loader = torch.utils.data.DataLoader(
train_dataset,
batch_size=args.batch_size,
shuffle=(train_sampler is None),
num_workers=args.workers,
pin_memory=True,
sampler=train_sampler)
lemniscate = NCEAverage(args.low_dim, ndata, 20, args.nce_t,
args.nce_m)
optimizer = torch.optim.SGD(model.parameters(),
0.1,
momentum=0.1,
weight_decay=0.00001)
optimizer = FP16_Optimizer(optimizer,
static_loss_scale=args.static_loss,
verbose=False)
for epoch in range(50):
if args.distributed:
train_sampler.set_epoch(epoch)
adjust_learning_rate(optimizer, epoch)
if epoch % 1 == 0:
save_checkpoint({
'epoch': epoch + 1,
'arch': args.arch,
'state_dict': model.state_dict(),
'lemniscate': lemniscate,
'optimizer': optimizer.state_dict(),
})
train(train_loader, model, lemniscate, criterion, optimizer, epoch)
train_sampler = torch.utils.data.sampler.SubsetRandomSampler(sub_index)
train_loader = torch.utils.data.DataLoader(
train_dataset,
batch_size=args.batch_size,
shuffle=(train_sampler is None),
num_workers=args.workers,
pin_memory=True,
sampler=train_sampler)
lemniscate = NCEAverage(args.low_dim, ndata, args.nce_k, args.nce_t,
args.nce_m)
optimizer = torch.optim.SGD(model.parameters(),
args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay)
optimizer = FP16_Optimizer(optimizer,
static_loss_scale=args.static_loss,
verbose=False)
if args.kmeans_opt:
kmeans_opt(lemniscate, 500)
for epoch in range(args.start_epoch, args.epochs):
if args.distributed:
train_sampler.set_epoch(epoch)
adjust_learning_rate(optimizer, epoch)
if epoch % 1 == 0:
# evaluate on validation set
#prec1 = NN(epoch, model, lemniscate, train_loader, train_loader) # was evaluating on train
# prec1 = kNN(model, lemniscate, train_loader, val_loader, args.K, args.nce_t)
# prec1 really should be renamed to prec5 as kNN now returns top5 score, but
# it won't be backward's compatible as earlier models were saved with "best_prec1"
# remember best prec@1 and save checkpoint
# is_best = prec1 > best_prec1
# best_prec1 = max(prec1, best_prec1)
save_checkpoint({
'epoch': epoch + 1,
'arch': args.arch,
'state_dict': model.state_dict(),
'lemniscate': lemniscate,
# 'best_prec1': best_prec1,
'optimizer': optimizer.state_dict(),
}) # , is_best)
# train for one epoch
train(train_loader, model, lemniscate, criterion, optimizer, epoch)
# kmeans,cent = kmeans()
# group_train(train_loader, model, lemniscate, criterion, optimizer, epoch, kmeans, cent)
# print elapsed time
end_train_time = datetime.datetime.now()
d = end_train_time - begin_train_time
print(
"Trained for %d epochs. Elapsed time: %s days, %.2dh: %.2dm: %.2ds" %
(len(range(args.start_epoch, args.epochs)), d.days, d.seconds // 3600,
(d.seconds // 60) % 60, d.seconds % 60))
def main():
global args, best_prec1
args = parser.parse_args()
args.distributed = args.world_size > 1
if args.distributed:
dist.init_process_group(backend=args.dist_backend, init_method=args.dist_url,
world_size=args.world_size)
# create model
if args.pretrained:
print("=> using pre-trained model '{}'".format(args.arch))
model = models.__dict__[args.arch](pretrained=True)
else:
print("=> creating model '{}'".format(args.arch))
model = models.__dict__[args.arch](low_dim=args.low_dim)
if not args.distributed:
if args.arch.startswith('alexnet') or args.arch.startswith('vgg'):
model.features = torch.nn.DataParallel(model.features)
model.cuda()
else:
model = torch.nn.DataParallel(model).cuda()
else:
model.cuda()
model = torch.nn.parallel.DistributedDataParallel(model)
# Data loading code
traindir = os.path.join(args.data, 'train')
valdir = os.path.join(args.data, 'val')
normalize = transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
train_dataset = datasets.ImageFolderInstance(
traindir,
transforms.Compose([
transforms.RandomResizedCrop(224, scale=(0.2,1.)),
transforms.RandomGrayscale(p=0.2),
transforms.ColorJitter(0.4, 0.4, 0.4, 0.4),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
normalize,
]))
if args.distributed:
train_sampler = torch.utils.data.distributed.DistributedSampler(train_dataset)
else:
train_sampler = None
train_loader = torch.utils.data.DataLoader(
train_dataset, batch_size=args.batch_size, shuffle=(train_sampler is None),
num_workers=args.workers, pin_memory=True, sampler=train_sampler)
val_loader = torch.utils.data.DataLoader(
datasets.ImageFolderInstance(valdir, transforms.Compose([
transforms.Resize(256),
transforms.CenterCrop(224),
transforms.ToTensor(),
normalize,
])),
batch_size=args.batch_size, shuffle=False,
num_workers=args.workers, pin_memory=True)
# define lemniscate and loss function (criterion)
ndata = train_dataset.__len__()
if args.nce_k > 0:
lemniscate = NCEAverage(args.low_dim, ndata, args.nce_k, args.nce_t, args.nce_m).cuda()
criterion = NCECriterion(ndata).cuda()
else:
lemniscate = LinearAverage(args.low_dim, ndata, args.nce_t, args.nce_m).cuda()
criterion = nn.CrossEntropyLoss().cuda()
optimizer = torch.optim.SGD(model.parameters(), args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay)
# optionally resume from a checkpoint
if args.resume:
if os.path.isfile(args.resume):
print("=> loading checkpoint '{}'".format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
best_prec1 = checkpoint['best_prec1']
model.load_state_dict(checkpoint['state_dict'])
lemniscate = checkpoint['lemniscate']
optimizer.load_state_dict(checkpoint['optimizer'])
print("=> loaded checkpoint '{}' (epoch {})"
.format(args.resume, checkpoint['epoch']))
else:
print("=> no checkpoint found at '{}'".format(args.resume))
cudnn.benchmark = True
if args.evaluate:
kNN(0, model, lemniscate, train_loader, val_loader, 200, args.nce_t)
return
for epoch in range(args.start_epoch, args.epochs):
if args.distributed:
train_sampler.set_epoch(epoch)
adjust_learning_rate(optimizer, epoch)
# train for one epoch
train(train_loader, model, lemniscate, criterion, optimizer, epoch)
# evaluate on validation set
prec1 = NN(epoch, model, lemniscate, train_loader, val_loader)
# remember best prec@1 and save checkpoint
is_best = prec1 > best_prec1
best_prec1 = max(prec1, best_prec1)
save_checkpoint({
'epoch': epoch + 1,
'arch': args.arch,
'state_dict': model.state_dict(),
'lemniscate': lemniscate,
'best_prec1': best_prec1,
'optimizer' : optimizer.state_dict(),
}, is_best)
# evaluate KNN after last epoch
kNN(0, model, lemniscate, train_loader, val_loader, 200, args.nce_t)
def main():
global args, best_prec1
args = parser.parse_args()
my_whole_seed = 111
random.seed(my_whole_seed)
np.random.seed(my_whole_seed)
torch.manual_seed(my_whole_seed)
torch.cuda.manual_seed_all(my_whole_seed)
torch.cuda.manual_seed(my_whole_seed)
np.random.seed(my_whole_seed)
torch.backends.cudnn.deterministic = True
torch.backends.cudnn.benchmark = False
os.environ['PYTHONHASHSEED'] = str(my_whole_seed)
for kk_time in range(args.seedstart, args.seedend):
args.seed = kk_time
args.result = args.result + str(args.seed)
# create model
model = models.__dict__[args.arch](low_dim=args.low_dim,
multitask=args.multitask,
showfeature=args.showfeature,
args=args)
#
# from models.Gresnet import ResNet18
# model = ResNet18(low_dim=args.low_dim, multitask=args.multitask)
model = torch.nn.DataParallel(model).cuda()
# Data loading code
normalize = transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
aug = transforms.Compose([
transforms.RandomResizedCrop(224, scale=(0.2, 1.)),
transforms.RandomGrayscale(p=0.2),
transforms.ColorJitter(0.4, 0.4, 0.4, 0.4),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(), normalize
])
# aug = transforms.Compose([transforms.RandomResizedCrop(224, scale=(0.08, 1.), ratio=(3 / 4, 4 / 3)),
# transforms.RandomHorizontalFlip(p=0.5),
# get_color_distortion(s=1),
# transforms.Lambda(lambda x: gaussian_blur(x)),
# transforms.ToTensor(),
# normalize])
# aug = transforms.Compose([transforms.RandomRotation(60),
# transforms.RandomResizedCrop(224, scale=(0.6, 1.)),
# transforms.RandomGrayscale(p=0.2),
# transforms.ColorJitter(0.4, 0.4, 0.4, 0.4),
# transforms.RandomHorizontalFlip(),
# transforms.ToTensor(),
# normalize])
aug_test = transforms.Compose(
[transforms.Resize(224),
transforms.ToTensor(), normalize])
# dataset
import datasets.fundus_kaggle_dr as medicaldata
train_dataset = medicaldata.traindataset(root=args.data,
transform=aug,
train=True,
args=args)
train_loader = torch.utils.data.DataLoader(
train_dataset,
batch_size=args.batch_size,
shuffle=True,
pin_memory=True,
num_workers=8,
drop_last=True if args.multiaug else False,
worker_init_fn=random.seed(my_whole_seed))
valid_dataset = medicaldata.traindataset(root=args.data,
transform=aug_test,
train=False,
test_type="amd",
args=args)
val_loader = torch.utils.data.DataLoader(
valid_dataset,
batch_size=args.batch_size,
shuffle=False,
pin_memory=True,
num_workers=8,
worker_init_fn=random.seed(my_whole_seed))
valid_dataset_gon = medicaldata.traindataset(root=args.data,
transform=aug_test,
train=False,
test_type="gon",
args=args)
val_loader_gon = torch.utils.data.DataLoader(
valid_dataset_gon,
batch_size=args.batch_size,
shuffle=False,
pin_memory=True,
num_workers=8,
worker_init_fn=random.seed(my_whole_seed))
valid_dataset_pm = medicaldata.traindataset(root=args.data,
transform=aug_test,
train=False,
test_type="pm",
args=args)
val_loader_pm = torch.utils.data.DataLoader(
valid_dataset_pm,
batch_size=args.batch_size,
shuffle=False,
pin_memory=True,
num_workers=8,
worker_init_fn=random.seed(my_whole_seed))
# define lemniscate and loss function (criterion)
ndata = train_dataset.__len__()
lemniscate = LinearAverage(args.low_dim, ndata, args.nce_t,
args.nce_m).cuda()
local_lemniscate = None
if args.multitaskposrot:
print("running multi task with positive")
criterion = BatchCriterionRot(1, 0.1, args.batch_size, args).cuda()
elif args.domain:
print("running domain with four types--unify ")
from lib.BatchAverageFour import BatchCriterionFour
# criterion = BatchCriterionTriple(1, 0.1, args.batch_size, args).cuda()
criterion = BatchCriterionFour(1, 0.1, args.batch_size,
args).cuda()
elif args.multiaug:
print("running multi task")
criterion = BatchCriterion(1, 0.1, args.batch_size, args).cuda()
else:
criterion = nn.CrossEntropyLoss().cuda()
if args.multitask:
cls_criterion = nn.CrossEntropyLoss().cuda()
else:
cls_criterion = None
optimizer = torch.optim.Adam(model.parameters(),
args.lr,
weight_decay=args.weight_decay)
# optionally resume from a checkpoint
if args.resume:
if os.path.isfile(args.resume):
print("=> loading checkpoint '{}'".format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
model.load_state_dict(checkpoint['state_dict'])
lemniscate = checkpoint['lemniscate']
optimizer.load_state_dict(checkpoint['optimizer'])
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
else:
print("=> no checkpoint found at '{}'".format(args.resume))
if args.evaluate:
knn_num = 100
auc, acc, precision, recall, f1score = kNN(args, model, lemniscate,
train_loader,
val_loader, knn_num,
args.nce_t, 2)
return
# mkdir result folder and tensorboard
os.makedirs(args.result, exist_ok=True)
writer = SummaryWriter("runs/" + str(args.result.split("/")[-1]))
writer.add_text('Text', str(args))
# copy code
import shutil, glob
source = glob.glob("*.py")
source += glob.glob("*/*.py")
os.makedirs(args.result + "/code_file", exist_ok=True)
for file in source:
name = file.split("/")[0]
if name == file:
shutil.copy(file, args.result + "/code_file/")
else:
os.makedirs(args.result + "/code_file/" + name, exist_ok=True)
shutil.copy(file, args.result + "/code_file/" + name)
for epoch in range(args.start_epoch, args.epochs):
lr = adjust_learning_rate(optimizer, epoch, args, [100, 200])
writer.add_scalar("lr", lr, epoch)
# # train for one epoch
loss = train(train_loader, model, lemniscate, local_lemniscate,
criterion, cls_criterion, optimizer, epoch, writer)
writer.add_scalar("train_loss", loss, epoch)
# gap_int = 10
# if (epoch) % gap_int == 0:
# knn_num = 100
# auc, acc, precision, recall, f1score = kNN(args, model, lemniscate, train_loader, val_loader, knn_num, args.nce_t, 2)
# writer.add_scalar("test_auc", auc, epoch)
# writer.add_scalar("test_acc", acc, epoch)
# writer.add_scalar("test_precision", precision, epoch)
# writer.add_scalar("test_recall", recall, epoch)
# writer.add_scalar("test_f1score", f1score, epoch)
#
# auc, acc, precision, recall, f1score = kNN(args, model, lemniscate, train_loader, val_loader_gon,
# knn_num, args.nce_t, 2)
# writer.add_scalar("gon/test_auc", auc, epoch)
# writer.add_scalar("gon/test_acc", acc, epoch)
# writer.add_scalar("gon/test_precision", precision, epoch)
# writer.add_scalar("gon/test_recall", recall, epoch)
# writer.add_scalar("gon/test_f1score", f1score, epoch)
# auc, acc, precision, recall, f1score = kNN(args, model, lemniscate, train_loader, val_loader_pm,
# knn_num, args.nce_t, 2)
# writer.add_scalar("pm/test_auc", auc, epoch)
# writer.add_scalar("pm/test_acc", acc, epoch)
# writer.add_scalar("pm/test_precision", precision, epoch)
# writer.add_scalar("pm/test_recall", recall, epoch)
# writer.add_scalar("pm/test_f1score", f1score, epoch)
# save checkpoint
save_checkpoint(
{
'epoch': epoch,
'arch': args.arch,
'state_dict': model.state_dict(),
'lemniscate': lemniscate,
'optimizer': optimizer.state_dict(),
},
filename=args.result + "/fold" + str(args.seedstart) +
"-epoch-" + str(epoch) + ".pth.tar")
# define loss function
if hasattr(lemniscate, 'K'):
criterion = NCECriterion(ndata)
else:
criterion = nn.CrossEntropyLoss()
if use_cuda:
net.cuda()
net = torch.nn.DataParallel(net, device_ids=range(torch.cuda.device_count()))
lemniscate.cuda()
criterion.cuda()
cudnn.benchmark = True
if args.test_only:
acc = kNN(0, net, lemniscate, trainloader, testloader, 200, args.nce_t, 1)
sys.exit(0)
optimizer = optim.SGD(net.parameters(), lr=args.lr, momentum=0.9, weight_decay=5e-4)
def adjust_learning_rate(optimizer, epoch):
"""Sets the learning rate to the initial LR decayed by 10 every 30 epochs"""
lr = args.lr
if epoch >= 80:
lr = args.lr * (0.1 ** ((epoch-80) // 40))
print(lr)
for param_group in optimizer.param_groups:
param_group['lr'] = lr
# Training
def train(epoch):
