def _get_transform(self, metadata):
input_metadata = metadata['input']
size = input_metadata['size']
space = input_metadata['space']
drange = input_metadata['range']
normalize = input_metadata['normalize']
if size == None:
size = 224
if isinstance(size, (list, tuple)):
size = size[-1]
transform = [
sT.Resize(size),
sT.CenterCrop(size),
]
if space == 'bgr':
transform.append(sT.FlipChannels())
if list(drange) == [0, 1]:
transform.append(sT.ToTensor())
elif list(drange) == [0, 255]:
transform.append(sT.ToTensor(normalize=False, dtype=torch.float))
else:
raise NotImplementedError
if normalize is not None:
transform.append(
sT.Normalize(mean=normalize['mean'], std=normalize['std']))
return sT.Compose(transform)
def main():
car_train_dst = vision.datasets.StanfordCars('../data/StanfordCars',
split='train')
car_val_dst = vision.datasets.StanfordCars('../data/StanfordCars',
split='test')
aircraft_train_dst = vision.datasets.FGVCAircraft('../data/FGVCAircraft',
split='trainval')
aircraft_val_dst = vision.datasets.FGVCAircraft('../data/FGVCAircraft',
split='test')
car_teacher = vision.models.classification.resnet18(num_classes=196,
pretrained=False)
aircraft_teacher = vision.models.classification.resnet18(num_classes=102,
pretrained=False)
student = vision.models.classification.resnet18(num_classes=196 + 102,
pretrained=False)
car_teacher.load_state_dict(torch.load(args.car_ckpt))
aircraft_teacher.load_state_dict(torch.load(args.aircraft_ckpt))
train_transform = sT.Compose([
sT.RandomResizedCrop(224),
sT.RandomHorizontalFlip(),
sT.ToTensor(),
sT.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])
])
val_transform = sT.Compose([
sT.Resize(256),
sT.CenterCrop(224),
sT.ToTensor(),
sT.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])
])
car_train_dst.transform = aircraft_train_dst.transform = train_transform
car_val_dst.transform = aircraft_val_dst.transform = val_transform
car_metric = metrics.MetricCompose(
metric_dict={
'car_acc': metrics.Accuracy(attach_to=lambda o, t: (o[:, :196], t))
})
aircraft_metric = metrics.MetricCompose(metric_dict={
'aircraft_acc':
metrics.Accuracy(attach_to=lambda o, t: (o[:, 196:], t))
})
train_dst = torch.utils.data.ConcatDataset(
[car_train_dst, aircraft_train_dst])
train_loader = torch.utils.data.DataLoader(train_dst,
batch_size=32,
shuffle=True,
num_workers=4)
car_loader = torch.utils.data.DataLoader(car_val_dst,
batch_size=32,
shuffle=False,
num_workers=4)
aircraft_loader = torch.utils.data.DataLoader(aircraft_val_dst,
batch_size=32,
shuffle=False,
num_workers=4)
car_evaluator = engine.evaluator.BasicEvaluator(car_loader, car_metric)
aircraft_evaluator = engine.evaluator.BasicEvaluator(
aircraft_loader, aircraft_metric)
if args.ckpt is not None:
student.load_state_dict(torch.load(args.ckpt))
print("Load student model from %s" % args.ckpt)
if args.test_only:
results_car = car_evaluator.eval(student)
results_aircraft = aircraft_evaluator.eval(student)
print("Stanford Cars: %s" % (results_car))
print("FGVC Aircraft: %s" % (results_aircraft))
return
TOTAL_ITERS = len(train_loader) * 100
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
optim = torch.optim.Adam(student.parameters(),
lr=args.lr,
weight_decay=1e-4)
sched = torch.optim.lr_scheduler.CosineAnnealingLR(optim,
T_max=TOTAL_ITERS)
trainer = amalgamation.CommonFeatureAmalgamator(
logger=utils.logger.get_logger('cfl'),
tb_writer=SummaryWriter(log_dir='run/cfl-%s' %
(time.asctime().replace(' ', '_'))))
trainer.add_callback(
engine.DefaultEvents.AFTER_STEP(every=10),
callbacks=callbacks.MetricsLogging(keys=('total_loss', 'loss_kd',
'loss_amal', 'loss_recons',
'lr')))
trainer.add_callback(engine.DefaultEvents.AFTER_EPOCH,
callbacks=[
callbacks.EvalAndCkpt(model=student,
evaluator=car_evaluator,
metric_name='car_acc',
ckpt_prefix='cfl_car'),
callbacks.EvalAndCkpt(
model=student,
evaluator=aircraft_evaluator,
metric_name='aircraft_acc',
ckpt_prefix='cfl_aircraft'),
])
trainer.add_callback(
engine.DefaultEvents.AFTER_STEP,
callbacks=callbacks.LRSchedulerCallback(schedulers=[sched]))
layer_groups = [(student.fc, car_teacher.fc, aircraft_teacher.fc)]
layer_channels = [(512, 512, 512)]
trainer.setup(student=student,
teachers=[car_teacher, aircraft_teacher],
layer_groups=layer_groups,
layer_channels=layer_channels,
dataloader=train_loader,
optimizer=optim,
device=device,
on_layer_input=True,
weights=[1., 10., 10.])
trainer.run(start_iter=0, max_iter=TOTAL_ITERS)
def main():
# Pytorch Part
if args.dataset == 'stanford_dogs':
num_classes = 120
train_dst = vision.datasets.StanfordDogs('data/StanfordDogs',
split='train')
val_dst = vision.datasets.StanfordDogs('data/StanfordDogs',
split='test')
elif args.dataset == 'cub200':
num_classes = 200
train_dst = vision.datasets.CUB200('data/CUB200', split='train')
val_dst = vision.datasets.CUB200('data/CUB200', split='test')
elif args.dataset == 'fgvc_aircraft':
num_classes = 102
train_dst = vision.datasets.FGVCAircraft('data/FGVCAircraft/',
split='trainval')
val_dst = vision.datasets.FGVCAircraft('data/FGVCAircraft/',
split='test')
elif args.dataset == 'stanford_cars':
num_classes = 196
train_dst = vision.datasets.StanfordCars('data/StanfordCars/',
split='train')
val_dst = vision.datasets.StanfordCars('data/StanfordCars/',
split='test')
else:
raise NotImplementedError
model = vision.models.classification.resnet18(num_classes=num_classes,
pretrained=args.pretrained)
train_dst.transform = sT.Compose([
sT.RandomResizedCrop(224),
sT.RandomHorizontalFlip(),
sT.ToTensor(),
sT.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])
])
val_dst.transform = sT.Compose([
sT.Resize(256),
sT.CenterCrop(224),
sT.ToTensor(),
sT.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])
])
train_loader = torch.utils.data.DataLoader(train_dst,
batch_size=32,
shuffle=True,
num_workers=4)
val_loader = torch.utils.data.DataLoader(val_dst,
batch_size=32,
num_workers=4)
TOTAL_ITERS = len(train_loader) * args.epochs
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
optim = torch.optim.SGD(model.parameters(),
lr=args.lr,
momentum=0.9,
weight_decay=5e-4)
sched = torch.optim.lr_scheduler.CosineAnnealingLR(optim,
T_max=TOTAL_ITERS)
# KAE Part
# Predefined task & metrics
task = kamal.tasks.StandardTask.classification()
metric = kamal.tasks.StandardMetrics.classification()
# Evaluator and Trainer
evaluator = engine.evaluator.BasicEvaluator(val_loader,
metric=metric,
progress=True)
trainer = engine.trainer.BasicTrainer(
logger=kamal.utils.logger.get_logger(args.dataset),
tb_writer=SummaryWriter(
log_dir='run/%s-%s' %
(args.dataset, time.asctime().replace(' ', '_'))))
# setup trainer
trainer.setup(model=model,
task=task,
dataloader=train_loader,
optimizer=optim,
device=device)
trainer.add_callback(engine.DefaultEvents.AFTER_STEP(every=10),
callbacks=callbacks.MetricsLogging(keys=('total_loss',
'lr')))
trainer.add_callback(
engine.DefaultEvents.AFTER_STEP,
callbacks=callbacks.LRSchedulerCallback(schedulers=[sched]))
ckpt_callback = trainer.add_callback(engine.DefaultEvents.AFTER_EPOCH,
callbacks=callbacks.EvalAndCkpt(
model=model,
evaluator=evaluator,
metric_name='acc',
ckpt_prefix=args.dataset))
trainer.run(start_iter=0, max_iter=TOTAL_ITERS)
ckpt_callback.callback.final_ckpt(ckpt_dir='pretrained', add_md5=True)
def main():
car_train_dst = vision.datasets.StanfordCars( '../data/StanfordCars', split='train')
car_val_dst = vision.datasets.StanfordCars( '../data/StanfordCars', split='test')
aircraft_train_dst = vision.datasets.FGVCAircraft( '../data/FGVCAircraft', split='trainval')
aircraft_val_dst = vision.datasets.FGVCAircraft( '../data/FGVCAircraft', split='test')
dog_train_dst = vision.datasets.StanfordDogs( '../data/StanfordDogs', split='train')
dog_val_dst = vision.datasets.StanfordDogs( '../data/StanfordDogs', split='test')
cub_train_dst = vision.datasets.CUB200( '../data/CUB200', split='train')
cub_val_dst = vision.datasets.CUB200( '../data/CUB200', split='test')
#car_teacher = vision.models.classification.resnet18( num_classes=196, pretrained=False )
#aircraft_teacher = vision.models.classification.resnet18( num_classes=102, pretrained=False )
#dog_teacher = vision.models.classification.resnet18( num_classes=120, pretrained=False )
#cub_teacher = vision.models.classification.resnet18( num_classes=200, pretrained=False )
student = vision.models.classification.resnet18( num_classes=196+102+120+200, pretrained=False )
#car_teacher.load_state_dict( torch.load( args.car_ckpt ) )
#aircraft_teacher.load_state_dict( torch.load( args.aircraft_ckpt ) )
#dog_teacher.load_state_dict( torch.load( args.dog_ckpt ) )
#cub_teacher.load_state_dict( torch.load( args.cub_ckpt ) )
train_transform = sT.Compose( [
sT.RandomResizedCrop(224),
sT.RandomHorizontalFlip(),
sT.ToTensor(),
sT.Normalize( mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225] )
] )
val_transform = sT.Compose( [
sT.Resize(256),
sT.CenterCrop( 224 ),
sT.ToTensor(),
sT.Normalize( mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225] )
] )
cub_train_dst.transform = dog_train_dst.transform = car_train_dst.transform = aircraft_train_dst.transform = train_transform
cub_val_dst.transform = dog_val_dst.transform = car_val_dst.transform = aircraft_val_dst.transform = val_transform
aircraft_train_dst.target_transform = lambda t: t+196
dog_train_dst.target_transform = lambda t: t+196+102
cub_train_dst.target_transform = lambda t: t+196+102+120
car_metric = metrics.MetricCompose(metric_dict={ 'car_acc': metrics.Accuracy(attach_to=lambda o, t: (o[:, :196],t) ) })
aircraft_metric = metrics.MetricCompose(metric_dict={ 'aircraft_acc': metrics.Accuracy(attach_to=lambda o, t: (o[:, 196:196+102],t) ) })
dog_metric = metrics.MetricCompose(metric_dict={ 'dog_acc': metrics.Accuracy(attach_to=lambda o, t: (o[:, 196+102:196+102+120],t) ) })
cub_metric = metrics.MetricCompose(metric_dict={ 'cub_acc': metrics.Accuracy(attach_to=lambda o, t: (o[:, 196+102+120:196+102+120+200],t) ) })
train_dst = torch.utils.data.ConcatDataset( [car_train_dst, aircraft_train_dst, dog_train_dst, cub_train_dst] )
train_loader = torch.utils.data.DataLoader( train_dst, batch_size=32, shuffle=True, num_workers=4 )
car_loader = torch.utils.data.DataLoader( car_val_dst, batch_size=32, shuffle=False, num_workers=2 )
aircraft_loader = torch.utils.data.DataLoader( aircraft_val_dst, batch_size=32, shuffle=False, num_workers=2 )
dog_loader = torch.utils.data.DataLoader( dog_val_dst, batch_size=32, shuffle=False, num_workers=2 )
cub_loader = torch.utils.data.DataLoader( cub_val_dst, batch_size=32, shuffle=False, num_workers=2 )
car_evaluator = engine.evaluator.BasicEvaluator( car_loader, car_metric )
aircraft_evaluator = engine.evaluator.BasicEvaluator( aircraft_loader, aircraft_metric )
dog_evaluator = engine.evaluator.BasicEvaluator( dog_loader, dog_metric )
cub_evaluator = engine.evaluator.BasicEvaluator( cub_loader, cub_metric )
if args.ckpt is not None:
student.load_state_dict( torch.load( args.ckpt ) )
print("Load student model from %s"%args.ckpt)
if args.test_only:
results_car = car_evaluator.eval( student )
results_aircraft = aircraft_evaluator.eval( student )
results_dog = dog_evaluator.eval( student )
results_cub = cub_evaluator.eval( student )
print("Stanford Cars: %s"%( results_car ))
print("FGVC Aircraft: %s"%( results_aircraft ))
print("Stanford Dogs: %s"%( results_dog ))
print("CUB200: %s"%( results_cub ))
return
TOTAL_ITERS=len(train_loader) * 100
device = torch.device( 'cuda' if torch.cuda.is_available() else 'cpu' )
optim = torch.optim.Adam( student.parameters(), lr=args.lr, weight_decay=1e-4)
sched = torch.optim.lr_scheduler.CosineAnnealingLR( optim, T_max=TOTAL_ITERS )
task = tasks.StandardTask.classification()
trainer = engine.trainer.BasicTrainer(
logger=utils.logger.get_logger('scratch-4'),
tb_writer=SummaryWriter( log_dir='run/scratch-4-%s'%( time.asctime().replace( ' ', '_' ) ) )
)
trainer.add_callback(
engine.DefaultEvents.AFTER_STEP(every=10),
callbacks=callbacks.MetricsLogging(keys=('total_loss', 'lr')))
trainer.add_callback(
engine.DefaultEvents.AFTER_EPOCH,
callbacks=[
callbacks.EvalAndCkpt(model=student, evaluator=car_evaluator, metric_name='car_acc', ckpt_prefix='cfl_car'),
callbacks.EvalAndCkpt(model=student, evaluator=aircraft_evaluator, metric_name='aircraft_acc', ckpt_prefix='cfl_aircraft'),
callbacks.EvalAndCkpt(model=student, evaluator=dog_evaluator, metric_name='dog_acc', ckpt_prefix='cfl_dog'),
callbacks.EvalAndCkpt(model=student, evaluator=cub_evaluator, metric_name='cub_acc', ckpt_prefix='cfl_cub'),
] )
trainer.add_callback(
engine.DefaultEvents.AFTER_STEP,
callbacks=callbacks.LRSchedulerCallback(schedulers=[sched]))
trainer.setup( model=student,
task=task,
dataloader=train_loader,
optimizer=optim,
device=device )
trainer.run(start_iter=0, max_iter=TOTAL_ITERS)