def make_data_loader(args, no_aug=False, **kwargs):
if args.dataset == 'cifar10':
mean = [0.4914, 0.4822, 0.4465]
std = [0.2023, 0.1994, 0.2010]
elif args.dataset == 'cifar100':
mean = [0.5071, 0.4867, 0.4408]
std = [0.2675, 0.2565, 0.2761]
elif args.dataset == 'miniimagenet':
mean = [0.4728, 0.4487, 0.4031]
std = [0.2744, 0.2663 , 0.2806]
size = 32
if args.dataset == 'miniimagenet':
size = 84
if no_aug:
transform_train = torchvision.transforms.Compose([
torchvision.transforms.Resize(size),
torchvision.transforms.CenterCrop(size),
torchvision.transforms.ToTensor(),
torchvision.transforms.Normalize(mean, std),
])
else: #Some transformations to avoid fitting to the noise
transform_train = torchvision.transforms.Compose([
torchvision.transforms.RandomCrop(size, padding=4),
torchvision.transforms.RandomHorizontalFlip(),
torchvision.transforms.ToTensor(),
torchvision.transforms.Normalize(mean, std),
])
transform_test = torchvision.transforms.Compose([
torchvision.transforms.Resize(size),
torchvision.transforms.CenterCrop(size),
torchvision.transforms.ToTensor(),
torchvision.transforms.Normalize(mean, std)
])
if args.dataset == "cifar10":
trainset = datasets.cifar10(transform=transform_train, regim='train')
testset = datasets.cifar10(transform=transform_test, regim='val')
elif args.dataset == "cifar100":
trainset = datasets.cifar100(transform=transform_train, regim='train')
testset = datasets.cifar100(transform=transform_test, regim='val')
elif args.dataset == "miniimagenet":
trainset, testset = datasets.miniimagenet(transform=transform_train, transform_test=transform_test)
else:
raise NotImplementedError
train_loader = torch.utils.data.DataLoader(trainset, batch_size=args.batch_size, shuffle=True, **kwargs)
test_loader = torch.utils.data.DataLoader(testset, batch_size=args.batch_size, shuffle=False, **kwargs)
return train_loader, test_loader
def adversarial_attack(args, model, inv_factors, results_path, fig_path):
print("Loading data")
if args.data == 'cifar10':
test_loader = datasets.cifar10(args.torch_data, splits='test')
elif args.data == 'gtsrb':
test_loader = datasets.gtsrb(args.data_dir, batch_size=args.batch_size, splits='test')
if args.data == 'mnist':
test_loader = datasets.mnist(args.torch_data, splits='test')
elif args.data == 'tiny':
test_loader = datasets.imagenet(args.data_dir, img_size=64, batch_size=args.batch_size, splits='test',
tiny=True)
elif args.data == 'imagenet':
img_size = 224
if args.model in ['googlenet', 'inception_v3']:
img_size = 299
test_loader = datasets.imagenet(args.data_dir, img_size, args.batch_size, workers=args.workers, splits='test')
if args.epsilon > 0:
print(eval_fgsm(model, test_loader, args.epsilon, args.device)[-1])
else:
stats_dict = {"eps": [], "acc": [], "ece1": [], "ece2": [], "nll": [], "ent": []}
bnn_stats_dict = {"eps": [], "acc": [], "ece1": [], "ece2": [], "nll": [], "ent": []}
steps = np.concatenate([np.linspace(0, 0.2, 11), np.linspace(0.3, 1, 8)])
for step in steps:
stats = eval_fgsm(model, test_loader, step, args.device, verbose=False)[-1]
bnn_stats = eval_fgsm_bnn(model, test_loader, inv_factors, args.estimator, args.samples, step,
device=args.device)[-1]
for (k1, v1), (k2, v2) in zip(stats.items(), bnn_stats.items()):
stats_dict[k1].append(v1)
bnn_stats_dict[k2].append(v2)
np.savez(results_path + "_fgsm.npz", stats=stats_dict, bnn_stats=bnn_stats_dict)
print(tabulate.tabulate(stats_dict, headers="keys"))
print(tabulate.tabulate(bnn_stats_dict, headers="keys"))
plot.adversarial_results(steps, stats_dict, bnn_stats_dict, fig_path)
def compute_mean_and_std():
# dataset = datasets.ssl_data(is_train = True, supervised = True, data_transforms = data_transformations.tensor_transform)
dataset = datasets.cifar10(
is_train=True,
supervised=True,
data_transforms=data_transformations.tensor_transform)
loader = torch.utils.data.DataLoader(dataset,
batch_size=64,
shuffle=False,
num_workers=0)
mean = 0.
std = 0.
for batch_idx, (data, _) in enumerate(loader):
images = torch.tensor(data.to(device))
batch_samples = images.size(
0) # batch size (the last batch can have smaller size!)
images = images.view(batch_samples, images.size(1), -1)
mean += images.mean(2).sum(0)
std += images.std(2).sum(0)
mean /= len(loader.dataset)
std /= len(loader.dataset)
print(mean)
print(std)
def main(args):
tf.logging.set_verbosity(tf.logging.INFO)
image_size = [args.resolution, args.resolution]
if args.dataset == "cifar10":
cifar_prepare, dataset_gen = cifar10(True), cifar10(False)
train_meta, test_meta = cifar_prepare("train"), cifar_prepare("test")
else:
raise NotImplementedError
params = vars(args)
tf.logging.info("Training on %d samples, evaluation on %d samples" %
(train_meta["length"], test_meta["length"]))
params["steps_per_epoch"] = train_meta["length"] // args.batch_size
max_steps = args.num_epochs * params["steps_per_epoch"]
params["num_label_classes"] = train_meta["num_classes"]
if args.request_from_nni:
exporters = [NNIExporter()]
else:
exporters = []
run_config = tf.estimator.RunConfig(
model_dir=args.log_dir,
log_step_count_steps=10,
save_checkpoints_secs=args.evaluation_interval,
save_summary_steps=10)
classifier = tf.estimator.Estimator(model_fn=model_fn,
params=params,
config=run_config)
train_spec = tf.estimator.TrainSpec(input_fn=lambda: dataset_gen(
"train", image_size, True, args.batch_size),
max_steps=max_steps)
eval_spec = tf.estimator.EvalSpec(input_fn=lambda: dataset_gen(
"test", image_size, False, args.batch_size),
throttle_secs=args.evaluation_interval,
exporters=exporters)
tf.estimator.train_and_evaluate(classifier, train_spec, eval_spec)
def test(args, model, fig_path=""):
print("Loading data")
if args.data == 'cifar10':
test_loader = datasets.cifar10(args.torch_data, splits='test')
elif args.data == 'gtsrb':
test_loader = datasets.gtsrb(args.data_dir, batch_size=args.batch_size, splits='test')
if args.data == 'mnist':
test_loader = datasets.mnist(args.torch_data, splits='test')
elif args.data == 'tiny':
test_loader = datasets.imagenet(args.data_dir, img_size=64, batch_size=args.batch_size, splits='test',
tiny=True)
elif args.data == 'imagenet':
img_size = 224
if args.model in ['googlenet', 'inception_v3']:
img_size = 299
test_loader = datasets.imagenet(args.data_dir, img_size, args.batch_size, workers=args.workers, splits='test')
predictions, labels = eval_nn(model, test_loader, args.device, args.verbose)
print("Plotting results")
plot.reliability_diagram(predictions, labels, path=fig_path + "_reliability.pdf")
def main():
args = setup()
print("Preparing directories")
os.makedirs(os.path.join(args.root_dir, "factors"), exist_ok=True)
filename = f"{args.prefix}{args.model}_{args.data}_{args.estimator}{args.suffix}"
factors_path = os.path.join(args.root_dir, "factors", filename)
print("Loading model")
if args.model == 'lenet5':
model = lenet5.lenet5(pretrained=args.data, device=args.device)
elif args.model == 'resnet18' and args.data != 'imagenet':
model = resnet.resnet18(pretrained=os.path.join(
args.root_dir, 'weights', f"{args.model}_{args.data}.pth"),
num_classes=43 if args.data == 'gtsrb' else 10,
device=args.device)
else:
model_class = getattr(torchvision.models, args.model)
if args.model in ['googlenet', 'inception_v3']:
model = model_class(pretrained=True, aux_logits=False)
else:
model = model_class(pretrained=True)
model.to(args.device).train()
if args.parallel:
model = torch.nn.parallel.DataParallel(model)
if args.estimator != 'inf':
print(f"Loading data")
if args.data == 'cifar10':
data = datasets.cifar10(args.torch_data,
args.batch_size,
args.workers,
args.augment,
splits='train')
elif args.data == 'mnist':
data = datasets.mnist(args.torch_data,
args.batch_size,
args.workers,
args.augment,
splits='train')
elif args.data == 'gtsrb':
data = datasets.gtsrb(args.data_dir,
batch_size=args.batch_size,
workers=args.workers,
splits='train')
elif args.data == 'tiny':
img_size = 64
data = datasets.imagenet(args.data_dir,
img_size,
args.batch_size,
splits='train',
tiny=True)
elif args.data == 'imagenet':
img_size = 224
if args.model in ['googlenet', 'inception_v3']:
img_size = 299
data = datasets.imagenet(args.data_dir,
img_size,
args.batch_size,
workers=args.workers,
splits='train')
torch.backends.cudnn.benchmark = True
print("Computing factors")
if args.estimator == 'inf':
est = compute_inf(args)
elif args.estimator == 'efb':
factors = torch.load(factors_path.replace("efb", "kfac") + '.pth')
est = compute_factors(args, model, data, factors)
else:
est = compute_factors(args, model, data)
print("Saving factors")
if args.estimator == "inf":
torch.save(est.state, f"{factors_path}{args.rank}.pth")
elif args.estimator == "efb":
torch.save(list(est.state.values()), factors_path + '.pth')
torch.save(list(est.diags.values()),
factors_path.replace("efb", "diag") + '.pth')
else:
torch.save(list(est.state.values()), factors_path + '.pth')
preprocesses_dataset = lambda dataset: dataset #just a dummy function
elif dataset == 'norb_random':
print "Using NORB dataset, size = 96"
train_x, test_x = norb_random()
print train_x.shape
print test_x.shape
preprocesses_dataset = lambda dataset: dataset #just a dummy function
elif dataset == 'ocr_letter':
print "Using ocr_letter dataset"
train_x, valid_x, test_x = ocr_letter()
preprocesses_dataset = lambda dataset: dataset #just a dummy function
elif dataset == 'cifar10':
print "Using CIFAR10 dataset"
train_x, train_t, test_x, test_t = cifar10(num_val=None,
normalized=True,
centered=False)
preprocesses_dataset = lambda dataset: dataset #just a dummy function
train_x = train_x.reshape((-1, num_features))
test_x = test_x.reshape((-1, num_features))
else:
print 'Wrong dataset', dataset
exit()
if mode == 'train_full':
if dataset in ['sample', 'fixed', 'caltech', 'ocr_letter']:
train_x = np.concatenate([train_x, valid_x])
elif mode == 'valid':
assert dataset in ['sample', 'fixed', 'ocr_letter', 'caltech']
valid_x = valid_x.astype(np.float32)
sh_x_valid = theano.shared(preprocesses_dataset(valid_x), borrow=True)
def main(argv=None):
## Create the directory for training model
if gfile.Exists(TRAIN_MODEL_DIR):
gfile.DeleteRecursively(TRAIN_MODEL_DIR)
gfile.MakeDirs(TRAIN_MODEL_DIR)
# Using logging to output and record everything
# set up logging to file
util.set_logging(os.path.join(TRAIN_MODEL_DIR, 'myapp.log'))
# Write down all the FLAGS
logging.info('FLAG information')
for key, value in tf.app.flags.FLAGS.__flags.iteritems():
logging.info( 'FLAG(%s) : %s'%(key, str(value)))
# Select the dataset
if FLAGS.dataset == 'cifar10':
ds = cifar10()
elif FLAGS.dataset == 'cifar100':
ds = cifar100()
else:
raise ValueError('Wrong dataset name. Check FLAGS.dataset')
# Download the dataset
ds.maybe_download()
# Read data
train_data, train_labels = ds.read_data(True)
TRAIN_SIZE = train_labels.shape[0]
logging.info('Training Size = %d', TRAIN_SIZE)
# This is where training samples and labels are fed to the graph.
# These placeholder nodes will be fed a batch of training data at each
# training step using the {feed_dict} argument to the Run() call below.
# This part depends on the Dataset
train_data_node = tf.placeholder(
tf.float32,
shape=(FLAGS.batch_size, ds.image_size(), ds.image_size(), ds.num_channel()), name='data_node')
train_labels_node = tf.placeholder(tf.float32,
shape=(FLAGS.batch_size, ds.num_label()), name='label_node')
tf.image_summary('images', train_data_node, max_images=FLAGS.batch_size)
# Training Model Architecture
# Select the network
if FLAGS.network == 'vgg16':
network = vgg16()
elif FLAGS.network == 'snn30k':
network = snn30k()
elif FLAGS.network == 'snn30k_wo_norm':
network = snn30k_wo_norm()
else:
raise ValueError('Wrong dataset name. Check FLAGS.network')
network_dict= network.model2(data=train_data_node, num_label=ds.num_label() , d1=FLAGS.d1, d2=FLAGS.d2, pair=FLAGS.pair, train=True)
logits = network_dict['softmax_linear']
softmax = tf.nn.softmax(logits)
tf.histogram_summary('logits', logits)
tf.histogram_summary('softmax',softmax)
# Define Objective Function
cross_entropy = tf.reduce_mean(tf.nn.softmax_cross_entropy_with_logits(
logits, train_labels_node), name='cross_entropy')
tf.add_to_collection('losses', cross_entropy )
loss = tf.add_n(tf.get_collection('losses'), name='total_loss')
tf.add_to_collection('show', cross_entropy)
tf.add_to_collection('show', loss)
tf.scalar_summary('loss/total_loss', loss)
tf.scalar_summary('loss/entropy', cross_entropy)
# Optimizer: set up a variable that's incremented once per batch and
# controls the learning rate decay.
batch = tf.Variable(0)
# Decay once per epoch, using an exponential schedule starting at 0.01.
learning_rate = tf.train.exponential_decay(
FLAGS.learning_rate, # Base learning rate.
batch * FLAGS.batch_size , # Current index into the dataset.
TRAIN_SIZE * FLAGS.decay_step, # Decay step.
FLAGS.decay_rate, # Decay rate.
staircase=True,
name='learning_rate'
)
#learning_rate = tf.Variable(FLAGS.learning_rate, name='learning_rate')
tf.scalar_summary("learning_rate", learning_rate)
tf.add_to_collection('show', learning_rate)
# Use simple momentum for the optimization.
optimizer = tf.train.MomentumOptimizer(learning_rate, FLAGS.momentum)
# optimizer = tf.train.AdamOptimizer(learning_rate)
# Compute the gradients for a list of variables.
grads_and_vars = optimizer.compute_gradients(loss, var_list=tf.all_variables())
# Let Batch normalization variables have higher learning rate
clipped_grads_and_vars = []
"""
for gv in grads_and_vars:
if gv[0] is not None:
if 'bn_weights' in gv[1].name:
clipped_grads_and_vars.append([tf.mul(gv[0], tf.constant([1.00001]) ), gv[1]])
elif 'bn_biases' in gv[1].name:
clipped_grads_and_vars.append([tf.mul(gv[0], tf.constant([1.00001]) ), gv[1]])
else:
clipped_grads_and_vars.append([gv[0] , gv[1]])
train_op = optimizer.apply_gradients(clipped_grads_and_vars, global_step=batch)
"""
train_op = optimizer.apply_gradients(grads_and_vars, global_step=batch)
# Build the summary operation based on the TF collection of Summaries.
summary_op = tf.merge_all_summaries()
train_loss=[]
train_error= []
# Create a local session to run this computation.
with tf.Session() as s:
# Create a saver to store all the variables later
saver = tf.train.Saver(tf.all_variables())
# Run all the initializers to prepare the trainable parameters.
tf.initialize_all_variables().run()
summary_writer = tf.train.SummaryWriter(TRAIN_MODEL_DIR,
graph_def=s.graph_def)
offset_old = 0
logging.info('Initialized!')
ret = []
# Loop through training steps.
num_steps = FLAGS.num_epochs * TRAIN_SIZE // FLAGS.batch_size
session_start_time = time.time()
for step in xrange(FLAGS.num_epochs * TRAIN_SIZE // FLAGS.batch_size):
# Compute the offset of the current minibatch in the data.
# Note that we could use better randomization across epochs.
offset = (step * FLAGS.batch_size) % (TRAIN_SIZE - FLAGS.batch_size)
batch_data = train_data[offset:(offset + FLAGS.batch_size), :, :, :]
batch_labels = train_labels[offset:(offset + FLAGS.batch_size)]
# This dictionary maps the batch data (as a np array) to the
# node in the graph is should be fed to.
feed_dict = {train_data_node: batch_data,
train_labels_node: batch_labels}
start_time = time.time()
# Run the graph and fetch some of the nodes.
# Remind : (train_op) is the most parameter here. Without it, Tensorflow will not do the backpropogation.
ret.append( s.run(
tf.get_collection('show')+[logits, train_op],
feed_dict=feed_dict) )
duration = time.time() - start_time
train_error.append( util.error_rate(ret[-1][-2], batch_labels ))
if step % FLAGS.iter_print_train_info == (FLAGS.iter_print_train_info-1):
# Print the training Information
logging.info('Epoch %.2f, Step %d' % ((float(step) * FLAGS.batch_size / TRAIN_SIZE), step))
# Print the time information
sec_per_batch = float(duration)
remaining_sec = int(float((time.time() - session_start_time)/step) * float(num_steps - step))
remaining_time = str(datetime.timedelta(seconds=remaining_sec))
logging.info('%.3f sec/batch, remaining time = %s' %(sec_per_batch, remaining_time))
ret = np.array(ret)
for idx, var in enumerate(tf.get_collection('show')):
logging.info('Average (%s): %f' % (var.name, np.mean(ret[:, idx])) )
logging.info('Average Train error: %.2f%%' % np.mean(train_error))
train_error = []
ret = []
print('\n')
sys.stdout.flush()
if step % 100==99:
# Save the summary information
logging.info('Save the summary information')
summary_str = s.run(summary_op, feed_dict)
summary_writer.add_summary(summary_str, step)
# Per Epoch
if(offset < offset_old ):
cur_epoch =np.round((float(step) * FLAGS.batch_size / TRAIN_SIZE))
cur_epoch = int(cur_epoch)
logging.info('Epoch %d' % cur_epoch)
# Randomize Data for Batch normalization
logging.info('Reorder data order for Batch Normalization')
rand_idx = np.random.permutation(len(train_labels))
train_data = train_data[rand_idx, :, :, :]
train_labels = train_labels[rand_idx, :]
# Horizontal mirroring
logging.info('Randomly horizontal flip the Images')
mir_idx = np.random.randint(2, size= len(train_labels))
mir_idx = np.nonzero(mir_idx > 0 )[0]
for i in range(ds.num_channel()):
train_data[mir_idx, :, :, i ] = train_data[mir_idx, :, ::-1, i]
if((cur_epoch % 10) == 9):
# Save Model
checkpoint_path = os.path.join(TRAIN_MODEL_DIR, 'model.ckpt')
logging.info('Save the model : %s'%(checkpoint_path))
saver.save(s, checkpoint_path, global_step=step)
sys.stdout.flush()
offset_old = offset
# Save the last model
logging.info('Save the model : %s'%(checkpoint_path))
saver.save(s, checkpoint_path, global_step=step)
def out_of_domain(args, model, inv_factors, results_path="", fig_path=""):
"""Evaluates the model on in- and out-of-domain data.
Each dataset has its own out-of-domain dataset which is loaded automatically alongside the in-domain dataset
specified in `args.data`. For each image (batch) in the in- and out-of-domain data a forward pass through the
provided `model` is performed and the predictions are stored under `results_path`. This is repeated for the Bayesian
variant of the model (Laplace approximation).
Parameters
----------
args : Todo: Check type
The arguments provided to the script on execution.
model : torch.nn.Module Todo: Verify
A `torchvision` or custom neural network (a `torch.nn.Module` or `torch.nn.Sequential` instance)
inv_factors : list
A list KFAC factors, Eigenvectors of KFAC factors or diagonal terms. Todo: INF
results_path : string, optional
The path where results (in- and out-of-domain predictions) should be stored. Results are not stored if
argument `args.no_results` is provided.
fig_path : string, optional
The path where figures should be stored. Figures are only generated if argument `args.plot` is provided.
"""
print("Loading data")
if args.data == 'cifar10':
in_data = datasets.cifar10(args.torch_data, splits='test')
out_data = datasets.svhn(args.torch_data, splits='test')
elif args.data == 'mnist':
in_data = datasets.mnist(args.torch_data, splits='test')
out_data = datasets.kmnist(args.torch_data, splits='test')
elif args.data == 'gtsrb':
in_data = datasets.gtsrb(args.data_dir, batch_size=args.batch_size, splits='test')
out_data = datasets.cifar10(args.torch_data, splits='test')
elif args.data == 'tiny':
in_data = datasets.imagenet(args.data_dir, img_size=64, batch_size=args.batch_size, splits='test', tiny=True,
use_cache=True)
out_data = datasets.art(args.data_dir, img_size=64, batch_size=args.batch_size, use_cache=True)
elif args.data == 'imagenet':
img_size = 224
if args.model in ['googlenet', 'inception_v3']:
img_size = 299
in_data = datasets.imagenet(args.data_dir, img_size, args.batch_size, workers=args.workers, splits='test',
use_cache=True)
out_data = datasets.art(args.data_dir, img_size, args.batch_size, workers=args.workers, use_cache=True)
# Compute NN and BNN predictions on validation set of training data
predictions, bnn_predictions, labels, stats = eval_nn_and_bnn(model, in_data, inv_factors, args.estimator,
args.samples, args.stats, args.device, verbose=True)
# Compute NN and BNN predictions on out-of-distribution data
ood_predictions, bnn_ood_predictions, _, _ = eval_nn_and_bnn(model, out_data, inv_factors, args.estimator,
args.samples, False, args.device, verbose=True)
if not args.no_results:
print("Saving results")
np.savez_compressed(results_path,
stats=stats,
labels=labels,
predictions=predictions,
bnn_predictions=bnn_predictions,
ood_predictions=ood_predictions,
bnn_ood_predictions=bnn_ood_predictions)
if args.plot:
print("Plotting results")
fig, ax = plt.subplots(figsize=(12, 7), tight_layout=True)
plot.inv_ecdf_vs_pred_entropy(predictions, color='dodgerblue', linestyle='--', axis=ax)
plot.inv_ecdf_vs_pred_entropy(ood_predictions, color='crimson', linestyle='--', axis=ax)
plot.inv_ecdf_vs_pred_entropy(bnn_predictions, color='dodgerblue', axis=ax)
plot.inv_ecdf_vs_pred_entropy(bnn_ood_predictions, color='crimson', axis=ax)
ax.legend([f"NN {args.data.upper()} | Acc.: {accuracy(predictions, labels):.2f}%",
f"NN OOD",
f"BNN {args.data.upper()} | Acc.: {accuracy(bnn_predictions, labels):.2f}%",
f"BNN OOD"], fontsize=16, frameon=False)
plt.savefig(fig_path + "_ecdf.pdf", forma='pdf', dpi=1200)
plot.reliability_diagram(predictions, labels, path=fig_path + "_reliability.pdf")
plot.reliability_diagram(bnn_predictions, labels, path=fig_path + "_bnn_reliability.pdf")
plot.entropy_hist(predictions, ood_predictions, path=fig_path + "_entropy.pdf")
plot.entropy_hist(bnn_predictions, bnn_ood_predictions, path=fig_path + "_bnn_entropy.pdf")
def main():
args = setup()
print("Preparing directories")
filename = f"{args.prefix}{args.model}_{args.data}_{args.estimator}{args.suffix}"
factors_path = os.path.join(args.root_dir, "factors", filename)
weights_path = os.path.join(args.root_dir, "weights",
f"{args.model}_{args.data}.pth")
if args.exp_id == -1:
if not args.no_results:
os.makedirs(os.path.join(args.results_dir, args.model, "data",
args.estimator, args.optimizer),
exist_ok=True)
if args.plot:
os.makedirs(os.path.join(args.results_dir, args.model, "figures",
args.estimator, args.optimizer),
exist_ok=True)
results_path = os.path.join(args.results_dir, args.model, "data",
args.estimator, args.optimizer, filename)
else:
if not args.no_results:
os.makedirs(os.path.join(args.results_dir, args.model, "data",
args.estimator, args.optimizer,
args.exp_id),
exist_ok=True)
if args.plot:
os.makedirs(os.path.join(args.results_dir, args.model, "figures",
args.estimator, args.optimizer,
args.exp_id),
exist_ok=True)
results_path = os.path.join(args.results_dir, args.model, "data",
args.estimator, args.optimizer,
args.exp_id, filename)
print("Loading model")
if args.model == 'lenet5':
model = lenet5(pretrained=args.data, device=args.device)
elif args.model == 'resnet18' and args.data != 'imagenet':
model = resnet18(pretrained=weights_path,
num_classes=43 if args.data == 'gtsrb' else 10,
device=args.device)
else:
model_class = getattr(torchvision.models, args.model)
if args.model in ['googlenet', 'inception_v3']:
model = model_class(pretrained=True, aux_logits=False)
else:
model = model_class(pretrained=True)
model.to(args.device).eval()
if args.parallel:
model = torch.nn.parallel.DataParallel(model)
print("Loading data")
if args.data == 'mnist':
val_loader = datasets.mnist(args.torch_data, splits='val')
elif args.data == 'cifar10':
val_loader = datasets.cifar10(args.torch_data, splits='val')
elif args.data == 'gtsrb':
val_loader = datasets.gtsrb(args.data_dir,
batch_size=args.batch_size,
splits='val')
elif args.data == 'imagenet':
img_size = 224
if args.model in ['googlenet', 'inception_v3']:
img_size = 299
val_loader = datasets.imagenet(args.data_dir,
img_size,
args.batch_size,
args.workers,
splits='val',
use_cache=True,
pre_cache=True)
print("Loading factors")
if args.estimator in ["diag", "kfac"]:
factors = torch.load(factors_path + '.pth')
elif args.estimator == 'efb':
kfac_factors = torch.load(factors_path.replace("efb", "kfac") + '.pth')
lambdas = torch.load(factors_path + '.pth')
factors = list()
eigvecs = get_eigenvectors(kfac_factors)
for eigvec, lambda_ in zip(eigvecs, lambdas):
factors.append((eigvec[0], eigvec[1], lambda_))
elif args.estimator == 'inf':
factors = torch.load(f"{factors_path}{args.rank}.pth")
torch.backends.cudnn.benchmark = True
norm_min = -10
norm_max = 10
scale_min = -10
scale_max = 10
if args.boundaries:
x0 = list()
boundaries = [[norm_min, scale_min], [norm_max, scale_max],
[norm_min, scale_max], [norm_max, scale_min],
[norm_min / 2., scale_min], [norm_max / 2., scale_max],
[norm_min, scale_max / 2.], [norm_max, scale_min / 2.],
[norm_min / 2., scale_min / 2.],
[norm_max / 2., scale_max / 2.],
[norm_min / 2., scale_max / 2.],
[norm_max / 2., scale_min / 2.]]
for b in boundaries:
tmp = list()
for _ in range(3 if args.layer else 1):
tmp.extend(b)
x0.append(tmp)
else:
x0 = None
f_norms = np.array([factor.norm().cpu().numpy() for factor in factors])
space = list()
for i in range(3 if args.layer else 1):
space.append(
skopt.space.Real(norm_min,
norm_max,
name=f"norm{i}",
prior='uniform'))
space.append(
skopt.space.Real(scale_min,
scale_max,
name=f"scale{i}",
prior='uniform'))
stats = {
"norms": [],
"scales": [],
"acc": [],
"ece": [],
"nll": [],
"ent": [],
"cost": []
}
@skopt.utils.use_named_args(dimensions=space)
def objective(**params):
norms = list()
scales = list()
for f in f_norms:
if args.layer:
# Closest to max
if abs(f_norms.max() - f) < abs(f_norms.min() - f) and abs(
f_norms.max() - f) < abs(f_norms.mean() - f):
norms.append(10**params['norm0'])
scales.append(10**params['scale0'])
# Closest to min
elif abs(f_norms.min() - f) < abs(f_norms.max() - f) and abs(
f_norms.min() - f) < abs(f_norms.mean() - f):
norms.append(10**params['norm1'])
scales.append(10**params['scale1'])
# Closest to mean
else:
norms.append(10**params['norm2'])
scales.append(10**params['scale2'])
else:
norms.append(10**params['norm0'])
scales.append(10**params['scale0'])
if args.layer:
print(
tabulate.tabulate(
{
'Layer': np.arange(len(factors)),
'F-Norm:': f_norms,
'Norms': norms,
'Scales': scales
},
headers='keys',
numalign='right'))
else:
print("Norm:", norms[0], "Scale:", scales[0])
try:
inv_factors = invert_factors(factors, norms,
args.pre_scale * scales,
args.estimator)
except (RuntimeError, np.linalg.LinAlgError):
print(f"Error: Singular matrix")
return 200
predictions, labels, _ = eval_bnn(model,
val_loader,
inv_factors,
args.estimator,
args.samples,
stats=False,
device=args.device,
verbose=False)
err = 100 - accuracy(predictions, labels)
ece = 100 * expected_calibration_error(predictions, labels)[0]
nll = negative_log_likelihood(predictions, labels)
ent = predictive_entropy(predictions, mean=True)
stats["norms"].append(norms)
stats["scales"].append(scales)
stats["acc"].append(100 - err)
stats["ece"].append(ece)
stats["nll"].append(nll)
stats["ent"].append(ent)
stats["cost"].append(err + ece)
print(
f"Err.: {err:.2f}% | ECE: {ece:.2f}% | NLL: {nll:.3f} | Ent.: {ent:.3f}"
)
return err + ece
with warnings.catch_warnings():
warnings.filterwarnings("ignore", category=FutureWarning)
if args.optimizer == "gbrt":
res = skopt.gbrt_minimize(func=objective,
dimensions=space,
n_calls=args.calls,
x0=x0,
verbose=True,
n_jobs=args.workers,
n_random_starts=0 if x0 else 10,
acq_func='EI')
# EI (neg. expected improvement)
# LCB (lower confidence bound)
# PI (neg. prob. of improvement): Usually favours exploitation over exploration
# gp_hedge (choose probabilistically between all)
if args.optimizer == "gp":
res = skopt.gp_minimize(func=objective,
dimensions=space,
n_calls=args.calls,
x0=x0,
verbose=True,
n_jobs=args.workers,
n_random_starts=0 if x0 else 1,
acq_func='gp_hedge')
# acq_func: EI (neg. expected improvement), LCB (lower confidence bound), PI (neg. prob. of improvement)
# xi: how much improvement one wants over the previous best values.
# kappa: Importance of variance of predicted values. High: exploration > exploitation
# base_estimator: RF (random forest), ET (extra trees)
elif args.optimizer == "forest":
res = skopt.forest_minimize(func=objective,
dimensions=space,
n_calls=args.calls,
x0=x0,
verbose=True,
n_jobs=args.workers,
n_random_starts=0 if x0 else 1,
acq_func='EI')
elif args.optimizer == "random":
res = skopt.dummy_minimize(func=objective,
dimensions=space,
n_calls=args.calls,
x0=x0,
verbose=True)
elif args.optimizer == "grid":
space = [
np.arange(norm_min, norm_max + 1, 10),
np.arange(scale_min, scale_max + 1, 10)
]
res = grid(func=objective, dimensions=space)
print(f"Minimal cost of {min(stats['cost'])} found at:")
if args.layer:
print(
tabulate.tabulate(
{
'Layer': np.arange(len(factors)),
'F-Norm:': f_norms,
'Norms': stats['norms'][np.argmin(stats['cost'])],
'Scales': stats['scales'][np.argmin(stats['cost'])]
},
headers='keys',
numalign='right'))
else:
print("Norm:", stats['norms'][np.argmin(stats['cost'])][0],
"Scale:", stats['scales'][np.argmin(stats['cost'])][0])
if not args.no_results:
print("Saving results")
del res.specs['args']['func']
np.save(
results_path +
f"_best_params{'_layer.npy' if args.layer else '.npy'}", [
stats['norms'][np.argmin(stats['cost'])],
stats['scales'][np.argmin(stats['cost'])]
])
np.save(
results_path +
f"_hyperopt_stats{'_layer.npy' if args.layer else '.npy'}", stats)
skopt.dump(
res, results_path +
f"_hyperopt_dump{'_layer.pkl' if args.layer else '.pkl'}")
if args.plot:
print("Plotting results")
hyperparameters(args)
elif dataset == 'norb_96':
print "Using NORB dataset, size = 96"
x, y = load_numpy_subclasses(size=96, normalize=True)
x = x.T
train_x = x[:24300]
test_x = x[24300*2:24300*3] # only for debug, compare generation only
del y
preprocesses_dataset = lambda dataset: dataset #just a dummy function
elif dataset is 'ocr_letter':
print "Using ocr_letter dataset"
train_x, valid_x, test_x = ocr_letter()
preprocesses_dataset = lambda dataset: dataset #just a dummy function
elif dataset == 'cifar10':
print "Using CIFAR10 dataset"
train_x, train_t, test_x, test_t = cifar10(num_val=None, normalized=True, centered=False)
preprocesses_dataset = lambda dataset: dataset #just a dummy function
train_x = train_x.reshape((-1,num_features))
test_x = test_x.reshape((-1,num_features))
else:
print 'Wrong dataset', dataset
exit()
if dataset in ['sample', 'fixed', 'caltech', 'ocr_letter']:
train_x = np.concatenate([train_x,valid_x])
if dataset == 'sample':
train_t = np.concatenate([train_t,valid_t])
train_x = train_x.astype(theano.config.floatX)
test_x = test_x.astype(theano.config.floatX)
from logger import struct, Logger
from train import train, acc_metric, nll_metric
from models import vgg
H = struct(
batch_size=128,
val_batch_size=100,
epochs=10,
lr=0.1,
momentum=0.9,
)
S = struct(epoch=1, bn=1)
log = Logger('cifar10_standard', H, S, overwrite=True, metric_show_freq=100)
tn_loader, val_loader = loader(cifar10(), H.batch_size, H.val_batch_size)
class Net(nn.Module):
def __init__(self):
super(Net, self).__init__()
self.features = vgg('vgg11')
self.classifier = nn.Linear(512, 10)
def forward(self, x):
out = self.features(x)
out = out.view(out.size(0), -1)
out = self.classifier(out)
out = F.log_softmax(out)
return out
def main(argv):
patch_conv2d_4_size()
## Parsing arguments
parser = argparse.ArgumentParser(prog="main.py")
parser.add_argument("--model", required=True, help="model name")
parser.add_argument("--gpu",
default="0",
help="gpu ids, seperate by comma")
parser.add_argument(
"--resume",
"-r",
help="resume from checkpoint,specify folder containing the ckpt.t7")
parser.add_argument("--dataset",
default="cifar",
type=str,
help="The Dataset")
parser.add_argument("--no-cuda",
action="store_true",
default=False,
help="do not use gpu")
parser.add_argument("--seed", default=None, help="random seed", type=int)
parser.add_argument("--path", default=None, help="imagenet dataset path")
args = parser.parse_args(argv)
if args.seed is not None:
if torch.cuda.is_available():
torch.cuda.manual_seed(args.seed)
np.random.seed(args.seed)
torch.manual_seed(args.seed)
random.seed(args.seed)
device = "cuda" if torch.cuda.is_available(
) and not args.no_cuda else "cpu"
if device == "cuda":
logging.info("Using GPU! Available gpu count: {}".format(
torch.cuda.device_count()))
else:
logging.info("\033[1;3mWARNING: Using CPU!\033[0m")
## Dataset
if args.dataset == "cifar":
trainloader, validloader, ori_trainloader, testloader, _ = datasets.cifar10(
train_bs=128,
test_bs=100,
train_transform=None,
test_transform=None,
train_val_split_ratio=0.9)
elif args.dataset == "imagenet":
trainloader, validloader, ori_trainloader, testloader, _ = datasets.imagenet(
128, 32, None, None, train_val_split_ratio=None, path=args.path)
## Build model
logging.info("==> Building model..")
gpus = [int(d) for d in args.gpu.split(",")]
torch.cuda.set_device(gpus[0])
net = get_model(args.model)()
net = net.to(device)
if device == "cuda":
cudnn.benchmark = True
if len(gpus) > 1:
p_net = torch.nn.DataParallel(net, gpus)
else:
p_net = net
tester = Tester(net,
p_net, [trainloader, validloader, ori_trainloader],
testloader,
cfg={"dataset": args.dataset},
log=print)
tester.init(device=device, resume=args.resume, pretrain=True)
# tester.test(save=False)
keep_ratios, sparsity = tester.check_sparsity()
print("The final Sparsity is {:.3}, Keep Ratios Are:\n{}".format(
sparsity, keep_ratios))
for pc in tester.comp_primals.pc_list:
print(pc.comp_names, pc.get_keep_ratio())
_, keep_ratios = tester.get_true_flops()
def main():
# Batch size
batch_size = 64
epochs = 5
seed = 18
data = 'ar_faces'
# Since model was pretrained on ImageNet, normalize using ImageNet statistics
imagenet_mean = (0.485,0.456,0.406)
imagenet_std = (0.229,0.224,0.225)
# Means and standard deviations for other datasets
cifar10_mean = (0.4914,0.4822,0.4465)
cifar10_std = (0.247,0.243,0.261)
if data=='eth80':
val_ratio = 0.1
test_ratio = 0.1
train_set, val_set, test_set = data_split(eth80(), seed=seed, val_ratio=val_ratio, test_ratio=test_ratio)
train_xfm = transforms.Compose([
transforms.Resize((224,224)),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
transforms.Normalize(imagenet_mean, imagenet_std)
])
val_xfm = transforms.Compose([
transforms.Resize((224, 224)),
transforms.ToTensor(),
transforms.Normalize(imagenet_mean, imagenet_std)
])
train_set.dataset.tranform = train_xfm
val_set.dataset.transform = val_xfm
test_set.dataset.transform = val_xfm
elif data == 'ar_faces':
val_ratio = 0.1
test_ratio = 0.1
xfm = transforms.Compose([
transforms.Resize((224, 162)),
transforms.Pad((31, 0)),
transforms.ToTensor(),
transforms.Normalize(imagenet_mean, imagenet_std)
])
train_set, val_set, test_set = data_split(ar_faces(), seed=seed, val_ratio=val_ratio, test_ratio=test_ratio)
train_set.dataset.transform = xfm
val_set.dataset.transform = xfm
test_set.dataset.transform = xfm
elif data == 'cifar10':
val_ratio = 0.2
test_ratio = 0.2
train_xfm = transforms.Compose([
# transforms.Resize((224,224)),
transforms.RandomResizedCrop(224),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
transforms.Normalize(imagenet_mean, imagenet_std)
])
val_xfm = transforms.Compose([
transforms.Resize((224,224)),
transforms.ToTensor(),
transforms.Normalize(imagenet_mean, imagenet_std)
])
train_set, val_set, test_set = data_split(cifar10(), seed=seed, val_ratio=val_ratio, test_ratio=test_ratio)
train_set.dataset.tranform = train_xfm
val_set.dataset.transform = val_xfm
test_set.dataset.transform = val_xfm
# Number of classes
num_classes = len(train_set.dataset.classes)
# Loaders for each dataset
train_loader = DataLoader(train_set, batch_size=batch_size, shuffle=True)
val_loader = DataLoader(val_set, batch_size=batch_size)
test_loader = DataLoader(test_set, batch_size=batch_size)
# # Get a batch to visualize
# imgs, labels = next(iter(train_loader))
# # Make into grid
# imgs_grid = torchvision.utils.make_grid(imgs).permute(1,2,0).numpy()
# # Undo normalize
# mean = np.array(imagenet_mean)[None,None,:]
# std = np.array(imagenet_std)[None,None,:]
# imgs_grid = imgs_grid*std+mean
# # Print labels and filepaths
# print(labels)
# # print([test_loader.dataset.dataset.imgs[i][0] for i in test_loader.dataset.indices[0:batch_size]])
# plt.imshow(imgs_grid)
# plt.show()
# sys.exit()
# Load pretrained model
model = models.squeezenet1_1(pretrained=True)
# Reshape classification layer to have 'num_classes' outputs
model.classifier[1] = nn.Conv2d(512, num_classes, kernel_size=(1,1), stride=(1,1))
model.num_classes = num_classes
# Replace dropout layer in classifier with batch normalization
model.classifier[0] = nn.BatchNorm2d(512)
print(model.features)
print(model.classifier)
# # Resuming training
# model = load_model(model, 'squeezenet_ar_faces_9.pt')
# Freeze all parameters
for p in model.parameters():
p.requires_grad = False
# Make classifier and the last 2 layers of the feature extractor trainable
# for p in model.features[-1].parameters():
# p.requires_grad = True
# for p in model.features[-2].parameters():
# p.requires_grad = True
for p in model.classifier.parameters():
p.requires_grad = True
trainable_params = [p for p in model.parameters() if p.requires_grad==True]
# Cross entropy loss function
criterion = nn.CrossEntropyLoss()
# Adam optimizer
optimizer = optim.Adam(trainable_params, lr=10e-4)
# For each epoch, train model on train set and evaluate on eval set
for epoch in range(epochs):
# # Resuming training
# epoch += 10
print('Epoch: {}'.format(epoch))
# Train
model, _, _ = train_model(model, train_loader, criterion, optimizer)
# Validate
val_acc = eval_model(model, val_loader)
# Save
save_model(model, fname='squeezenet_{}_{}.pt'.format(data, epoch))
# Test
test_acc = eval_model(model, test_loader)