def run(args: DictConfig) -> None:
cuda_available = torch.cuda.is_available()
torch.manual_seed(args.seed)
device = "cuda" if cuda_available and args.device == 'cuda' else "cpu"
n_classes = args.get(args.dataset).n_classes
rep_size = args.get(args.dataset).rep_size
margin = args.get(args.dataset).margin
classifier = get_model(name=args.classifier_name,
n_classes=n_classes).to(args.device)
sdim = SDIM(disc_classifier=classifier,
n_classes=n_classes,
rep_size=rep_size,
mi_units=args.mi_units,
margin=margin).to(args.device)
base_dir = hydra.utils.to_absolute_path('logs/sdim/{}'.format(
args.dataset))
save_name = 'SDIM_{}.pth'.format(args.classifier_name)
sdim.load_state_dict(
torch.load(os.path.join(base_dir, save_name),
map_location=lambda storage, loc: storage))
ood_detection(sdim, args)
def run(args: DictConfig) -> None:
assert torch.cuda.is_available()
torch.manual_seed(args.seed)
n_classes = args.get(args.dataset).n_classes
rep_size = args.get(args.dataset).rep_size
margin = args.get(args.dataset).margin
classifier = resnet18(n_classes=n_classes).to(args.device)
sdim = SDIM(disc_classifier=classifier,
n_classes=n_classes,
rep_size=rep_size,
mi_units=args.mi_units,
margin=margin).to(args.device)
base_dir = hydra.utils.to_absolute_path('logs/sdim/{}'.format(
args.dataset))
save_name = 'SDIM_resnet18{}.pth'.format(suffix_dict[args.base_type])
sdim.load_state_dict(
torch.load(os.path.join(base_dir, save_name),
map_location=lambda storage, loc: storage))
if args.sample_likelihood:
sample_cases(sdim, args)
else:
pgd_attack(sdim, args)
def run(args: DictConfig) -> None:
cuda_available = torch.cuda.is_available()
torch.manual_seed(args.seed)
device = "cuda" if cuda_available and args.device == 'cuda' else "cpu"
n_classes = args.get(args.dataset).n_classes
rep_size = args.get(args.dataset).rep_size
margin = args.get(args.dataset).margin
classifier = load_pretrained_model(args)
if args.dataset == 'tiny_imagenet':
args.data_dir = 'tiny_imagenet'
sdim = SDIM(disc_classifier=classifier,
n_classes=n_classes,
rep_size=rep_size,
mi_units=args.mi_units,
margin=margin,
alpha=args.alpha,
beta=args.beta,
gamma=args.gamma).to(args.device)
optimizer = Adam(sdim.parameters(), lr=args.learning_rate)
if args.inference:
save_name = 'SDIM_{}.pth'.format(args.classifier_name)
sdim.load_state_dict(
torch.load(save_name, map_location=lambda storage, loc: storage))
thresholds1, thresholds2 = extract_thresholds(sdim, args)
clean_eval(sdim, args, thresholds1, thresholds2)
else:
train(sdim, optimizer, args)
def run(args: DictConfig) -> None:
assert torch.cuda.is_available()
torch.manual_seed(args.seed)
n_classes = args.get(args.dataset).n_classes
rep_size = args.get(args.dataset).rep_size
margin = args.get(args.dataset).margin
classifier = load_pretrained_model(args)
sdim = SDIM(disc_classifier=classifier,
n_classes=n_classes,
rep_size=rep_size,
mi_units=args.mi_units,
margin=margin,
alpha=args.alpha,
beta=args.beta,
gamma=args.gamma).to(args.device)
optimizer = Adam(sdim.parameters(), lr=args.learning_rate)
if args.inference:
save_name = 'SDIM_resnet18{}.pth'.format(suffix_dict[args.base_type])
sdim.load_state_dict(
torch.load(save_name, map_location=lambda storage, loc: storage))
thresholds1, thresholds2 = extract_thresholds(sdim, args)
clean_eval(sdim, args, thresholds1, thresholds2)
else:
train(sdim, optimizer, args)
def run(args: DictConfig) -> None:
cuda_available = torch.cuda.is_available()
torch.manual_seed(args.seed)
device = "cuda" if cuda_available and args.device == 'cuda' else "cpu"
n_classes = args.get(args.dataset).n_classes
rep_size = args.get(args.dataset).rep_size
margin = args.get(args.dataset).margin
if args.dataset == 'tiny_imagenet':
classifier = get_model_for_tiny_imagenet(name=args.classifier_name,
n_classes=n_classes).to(
args.device)
else:
classifier = get_model(name=args.classifier_name,
n_classes=n_classes).to(args.device)
sdim = SDIM(disc_classifier=classifier,
n_classes=n_classes,
rep_size=rep_size,
mi_units=args.mi_units,
margin=margin).to(args.device)
base_dir = hydra.utils.to_absolute_path('logs/sdim/{}'.format(
args.dataset))
save_name = 'SDIM_{}.pth'.format(args.classifier_name)
sdim.load_state_dict(
torch.load(os.path.join(base_dir, save_name),
map_location=lambda storage, loc: storage))
if args.sample_likelihood:
sample_cases(sdim, args)
else:
thresholds1, thresholds2 = extract_thresholds(sdim, args)
corruption_eval(sdim, args, thresholds1, thresholds2)
prefix = ''
if hps.encoder_name.startswith('sdim_'):
prefix = 'sdim_'
hps.encoder_name = hps.encoder_name.strip('sdim_')
model = SDIM(rep_size=hps.rep_size,
mi_units=hps.mi_units,
encoder_name=hps.encoder_name,
image_channel=hps.image_channel).to(hps.device)
checkpoint_path = os.path.join(
hps.log_dir,
'sdim_{}_{}_d{}.pth'.format(hps.encoder_name, hps.problem,
hps.rep_size))
model.load_state_dict(
torch.load(checkpoint_path,
map_location=lambda storage, loc: storage))
else:
n_encoder_layers = int(hps.encoder_name.strip('resnet'))
model = build_resnet_32x32(n=n_encoder_layers,
fc_size=hps.n_classes,
image_channel=hps.image_channel).to(
hps.device)
checkpoint_path = os.path.join(
hps.log_dir, '{}_{}.pth'.format(hps.encoder_name, hps.problem))
model.load_state_dict(
torch.load(checkpoint_path,
map_location=lambda storage, loc: storage))
print('Model name: {}'.format(hps.encoder_name))
def inference(hps: DictConfig) -> None:
# This enables a ctr-C without triggering errors
import signal
signal.signal(signal.SIGINT, lambda x, y: sys.exit(0))
logger = logging.getLogger(__name__)
cuda_available = torch.cuda.is_available()
torch.manual_seed(hps.seed)
device = "cuda" if cuda_available and hps.device == 'cuda' else "cpu"
# Models
local_channel = hps.get(hps.base_classifier).last_conv_channel
classifier = get_model(model_name=hps.base_classifier,
in_size=local_channel,
out_size=hps.rep_size).to(hps.device)
logger.info('Base classifier name: {}, # parameters: {}'.format(
hps.base_classifier, cal_parameters(classifier)))
sdim = SDIM(disc_classifier=classifier,
mi_units=hps.mi_units,
n_classes=hps.n_classes,
margin=hps.margin,
rep_size=hps.rep_size,
local_channel=local_channel).to(hps.device)
model_path = 'SDIM_{}.pth'.format(hps.base_classifier)
base_dir = '/userhome/cs/u3003679/generative-classification-with-rejection'
path = os.path.join(base_dir, model_path)
sdim.load_state_dict(torch.load(path)['model_state'])
# logging the SDIM desc.
for desc in sdim.desc():
logger.info(desc)
eval_loader = Loader('eval', batch_size=hps.n_batch_test, device=device)
if cuda_available and hps.n_gpu > 1:
sdim = torch.nn.DataParallel(sdim, device_ids=list(range(hps.n_gpu)))
torch.manual_seed(hps.seed)
np.random.seed(hps.seed)
n_iters = 0
top1 = AverageMeter('Acc@1')
top5 = AverageMeter('Acc@5')
sdim.eval()
for x, y in eval_loader:
n_iters += 1
if n_iters == len(eval_loader):
break
with torch.no_grad():
log_lik = sdim.infer(x)
acc1, acc5 = accuracy(log_lik, y, topk=(1, 5))
top1.update(acc1, x.size(0))
top5.update(acc5, x.size(0))
logger.info('Test Acc@1: {:.3f}, Acc@5: {:.3f}'.format(top1.avg, top5.avg))