def test_calibration_integration():
transform_pipeline = Compose([Resize((64, 64)), ToTensor()])
cifar10_train = DummyDataset(transform_pipeline)
cifar10_test = DummyDataset(transform_pipeline)
# we don't create different trainset for calibration since the goal is not
# to calibrate
al_dataset = ActiveLearningDataset(
cifar10_train, pool_specifics={'transform': transform_pipeline})
al_dataset.label_randomly(10)
use_cuda = False
model = vgg.vgg16(pretrained=False, num_classes=10)
criterion = nn.CrossEntropyLoss()
optimizer = optim.SGD(model.parameters(),
lr=0.001,
momentum=0.9,
weight_decay=0.0005)
wrapper = ModelWrapper(model, criterion)
calibrator = DirichletCalibrator(wrapper=wrapper,
num_classes=10,
lr=0.001,
reg_factor=0.01)
for step in range(2):
wrapper.train_on_dataset(al_dataset,
optimizer=optimizer,
batch_size=10,
epoch=1,
use_cuda=use_cuda,
workers=0)
wrapper.test_on_dataset(cifar10_test,
batch_size=10,
use_cuda=use_cuda,
workers=0)
before_calib_param = list(
map(lambda x: x.clone(), wrapper.model.parameters()))
calibrator.calibrate(al_dataset,
cifar10_test,
batch_size=10,
epoch=5,
use_cuda=use_cuda,
double_fit=False,
workers=0)
after_calib_param = list(map(lambda x: x.clone(), model.parameters()))
assert all([
np.allclose(i.detach(), j.detach())
for i, j in zip(before_calib_param, after_calib_param)
])
assert len(list(wrapper.model.modules())) < len(
list(calibrator.calibrated_model.modules()))
def test_integration():
transform_pipeline = Compose([Resize((64, 64)), ToTensor()])
cifar10_train = DummyDataset(transform_pipeline)
cifar10_test = DummyDataset(transform_pipeline)
al_dataset = ActiveLearningDataset(
cifar10_train, pool_specifics={'transform': transform_pipeline})
al_dataset.label_randomly(10)
use_cuda = False
model = vgg.vgg16(pretrained=False, num_classes=10)
criterion = nn.CrossEntropyLoss()
optimizer = optim.SGD(model.parameters(),
lr=0.001,
momentum=0.9,
weight_decay=0.0005)
# We can now use BaaL to create the active learning loop.
model = ModelWrapper(model, criterion)
# We create an ActiveLearningLoop that will automatically label the most uncertain samples.
# In this case, we use the widely used BALD heuristic.
active_loop = ActiveLearningLoop(al_dataset,
model.predict_on_dataset,
heuristic=heuristics.BALD(),
ndata_to_label=10,
batch_size=10,
iterations=10,
use_cuda=use_cuda,
workers=4)
# We're all set!
num_steps = 10
for step in range(num_steps):
old_param = list(map(lambda x: x.clone(), model.model.parameters()))
model.train_on_dataset(al_dataset,
optimizer=optimizer,
batch_size=10,
epoch=5,
use_cuda=use_cuda,
workers=2)
model.test_on_dataset(cifar10_test,
batch_size=10,
use_cuda=use_cuda,
workers=2)
if not active_loop.step():
break
new_param = list(map(lambda x: x.clone(), model.model.parameters()))
assert any([
not np.allclose(i.detach(), j.detach())
for i, j in zip(old_param, new_param)
])
assert step == 4 # 10 + (4 * 10) = 50, so it stops at iterations 4
class ModelWrapperMultiOutMultiInTest(unittest.TestCase):
def setUp(self):
class MultiOutModel(nn.Module):
def __init__(self):
super().__init__()
self.model = DummyModel()
def forward(self, x):
return [self.model(x)] * 2
self._crit = nn.MSELoss()
self.criterion = lambda x, y: self._crit(x[0], y) + self._crit(x[1], y)
self.model = MultiOutModel()
self.wrapper = ModelWrapper(self.model, self.criterion)
self.optim = torch.optim.SGD(self.wrapper.get_params(), 0.01)
self.dataset = DummyDataset()
def test_train_on_batch(self):
self.wrapper.train()
old_param = list(map(lambda x: x.clone(), self.model.parameters()))
input, target = [
torch.stack(v) for v in zip(*(self.dataset[0], self.dataset[1]))
]
self.wrapper.train_on_batch(input, target, self.optim)
new_param = list(map(lambda x: x.clone(), self.model.parameters()))
assert any(
[not torch.allclose(i, j) for i, j in zip(old_param, new_param)])
def test_test_on_batch(self):
self.wrapper.eval()
input, target = [
torch.stack(v) for v in zip(*(self.dataset[0], self.dataset[1]))
]
preds = torch.stack([
self.wrapper.test_on_batch(input, target, cuda=False)
for _ in range(10)
]).view(10, -1)
# Same loss
assert torch.allclose(torch.mean(preds, 0), preds[0])
preds = torch.stack([
self.wrapper.test_on_batch(input,
target,
cuda=False,
average_predictions=10)
for _ in range(10)
]).view(10, -1)
assert torch.allclose(torch.mean(preds, 0), preds[0])
def test_predict_on_batch(self):
self.wrapper.eval()
input = torch.stack((self.dataset[0][0], self.dataset[1][0]))
# iteration == 1
pred = self.wrapper.predict_on_batch(input, 1, False)
assert pred[0].size() == (2, 1, 1)
# iterations > 1
pred = self.wrapper.predict_on_batch(input, 10, False)
assert pred[0].size() == (2, 1, 10)
# iteration == 1
self.wrapper = ModelWrapper(self.model,
self.criterion,
replicate_in_memory=False)
pred = self.wrapper.predict_on_batch(input, 1, False)
assert pred[0].size() == (2, 1, 1)
# iterations > 1
pred = self.wrapper.predict_on_batch(input, 10, False)
assert pred[0].size() == (2, 1, 10)
def test_out_of_mem_raises_error(self):
self.wrapper.eval()
input = torch.stack((self.dataset[0][0], self.dataset[1][0]))
with pytest.raises(RuntimeError) as e_info:
self.wrapper.predict_on_batch(input, 0, False)
assert 'CUDA ran out of memory while BaaL tried to replicate data' in str(
e_info.value)
def test_raising_type_errors(self):
iterations = math.inf
self.wrapper.eval()
input = torch.stack((self.dataset[0][0], self.dataset[1][0]))
with pytest.raises(TypeError):
self.wrapper.predict_on_batch(input, iterations, False)
def test_using_cuda_raises_error_while_testing(self):
'''CUDA is not available on test environment'''
self.wrapper.eval()
input = torch.stack((self.dataset[0][0], self.dataset[1][0]))
with pytest.raises(Exception):
self.wrapper.predict_on_batch(input, 1, True)
def test_train(self):
history = self.wrapper.train_on_dataset(self.dataset,
self.optim,
10,
2,
use_cuda=False,
workers=0)
assert len(history) == 2
def test_test(self):
l = self.wrapper.test_on_dataset(self.dataset,
10,
use_cuda=False,
workers=0)
assert np.isfinite(l)
l = self.wrapper.test_on_dataset(self.dataset,
10,
use_cuda=False,
workers=0,
average_predictions=10)
assert np.isfinite(l)
def test_predict(self):
l = self.wrapper.predict_on_dataset(self.dataset,
10,
20,
use_cuda=False,
workers=0)
self.wrapper.eval()
assert np.allclose(
self.wrapper.predict_on_batch(self.dataset[0][0].unsqueeze(0),
20)[0].detach().numpy(), l[0][0])
assert np.allclose(
self.wrapper.predict_on_batch(self.dataset[19][0].unsqueeze(0),
20)[0][0].detach().numpy(), l[0][19])
assert l[0].shape == (len(self.dataset), 1, 20)
# Test generators
l_gen = self.wrapper.predict_on_dataset_generator(self.dataset,
10,
20,
use_cuda=False,
workers=0)
assert np.allclose(next(l_gen)[0][0], l[0][0])
for last in l_gen:
pass # Get last item
assert np.allclose(last[0][-1], l[0][-1])
# Test Half
l_gen = self.wrapper.predict_on_dataset_generator(self.dataset,
10,
20,
use_cuda=False,
workers=0,
half=True)
l = self.wrapper.predict_on_dataset(self.dataset,
10,
20,
use_cuda=False,
workers=0,
half=True)
assert next(l_gen)[0].dtype == np.float16
assert l[0].dtype == np.float16
data_s = []
l_gen = self.wrapper.predict_on_dataset_generator(data_s,
10,
20,
use_cuda=False,
workers=0,
half=True)
assert len(list(l_gen)) == 0
class ModelWrapperTest(unittest.TestCase):
def setUp(self):
# self.model = nn.Sequential(
# nn.Linear(10, 8), nn.ReLU(), nn.Dropout(), nn.Linear(8, 1), nn.Sigmoid()
# )
self.model = DummyModel()
self.criterion = nn.BCEWithLogitsLoss()
self.wrapper = ModelWrapper(self.model, self.criterion)
self.optim = torch.optim.SGD(self.wrapper.get_params(), 0.01)
self.dataset = DummyDataset()
def test_train_on_batch(self):
self.wrapper.train()
old_param = list(map(lambda x: x.clone(), self.model.parameters()))
input, target = torch.randn([1, 3, 10, 10]), torch.randn(1, 1)
self.wrapper.train_on_batch(input, target, self.optim)
new_param = list(map(lambda x: x.clone(), self.model.parameters()))
assert any(
[not torch.allclose(i, j) for i, j in zip(old_param, new_param)])
# test reset weights properties
linear_weights = list(
self.wrapper.model.named_children())[3][1].weight.clone()
conv_weights = list(
self.wrapper.model.named_children())[0][1].weight.clone()
self.wrapper.reset_fcs()
linear_new_weights = list(
self.wrapper.model.named_children())[3][1].weight.clone()
conv_new_weights = list(
self.wrapper.model.named_children())[0][1].weight.clone()
assert all([
not torch.allclose(i, j)
for i, j in zip(linear_new_weights, linear_weights)
])
assert all([
torch.allclose(i, j)
for i, j in zip(conv_new_weights, conv_weights)
])
self.wrapper.reset_all()
conv_next_new_weights = list(
self.wrapper.model.named_children())[0][1].weight.clone()
assert all([
not torch.allclose(i, j)
for i, j in zip(conv_new_weights, conv_next_new_weights)
])
def test_test_on_batch(self):
self.wrapper.eval()
input, target = torch.randn([1, 3, 10, 10]), torch.randn(1, 1)
preds = torch.stack([
self.wrapper.test_on_batch(input, target, cuda=False)
for _ in range(10)
]).view(10, -1)
# Same loss
assert torch.allclose(torch.mean(preds, 0), preds[0])
preds = torch.stack([
self.wrapper.test_on_batch(input,
target,
cuda=False,
average_predictions=10)
for _ in range(10)
]).view(10, -1)
assert torch.allclose(torch.mean(preds, 0), preds[0])
def test_predict_on_batch(self):
self.wrapper.eval()
input = torch.randn([2, 3, 10, 10])
# iteration == 1
pred = self.wrapper.predict_on_batch(input, 1, False)
assert pred.size() == (2, 1, 1)
# iterations > 1
pred = self.wrapper.predict_on_batch(input, 10, False)
assert pred.size() == (2, 1, 10)
# iteration == 1
self.wrapper = ModelWrapper(self.model,
self.criterion,
replicate_in_memory=False)
pred = self.wrapper.predict_on_batch(input, 1, False)
assert pred.size() == (2, 1, 1)
# iterations > 1
pred = self.wrapper.predict_on_batch(input, 10, False)
assert pred.size() == (2, 1, 10)
def test_train(self):
history = self.wrapper.train_on_dataset(self.dataset,
self.optim,
10,
2,
use_cuda=False,
workers=0)
assert len(history) == 2
def test_test(self):
l = self.wrapper.test_on_dataset(self.dataset,
10,
use_cuda=False,
workers=0)
assert np.isfinite(l)
l = self.wrapper.test_on_dataset(self.dataset,
10,
use_cuda=False,
workers=0,
average_predictions=10)
assert np.isfinite(l)
def test_predict(self):
l = self.wrapper.predict_on_dataset(self.dataset,
10,
20,
use_cuda=False,
workers=0)
self.wrapper.eval()
assert np.allclose(
self.wrapper.predict_on_batch(self.dataset[0][0].unsqueeze(0),
20)[0].detach().numpy(), l[0])
assert np.allclose(
self.wrapper.predict_on_batch(self.dataset[19][0].unsqueeze(0),
20)[0].detach().numpy(), l[19])
assert l.shape == (len(self.dataset), 1, 20)
# Test generators
l_gen = self.wrapper.predict_on_dataset_generator(self.dataset,
10,
20,
use_cuda=False,
workers=0)
assert np.allclose(next(l_gen)[0], l[0])
for last in l_gen:
pass # Get last item
assert np.allclose(last[-1], l[-1])
# Test Half
l_gen = self.wrapper.predict_on_dataset_generator(self.dataset,
10,
20,
use_cuda=False,
workers=0,
half=True)
l = self.wrapper.predict_on_dataset(self.dataset,
10,
20,
use_cuda=False,
workers=0,
half=True)
assert next(l_gen).dtype == np.float16
assert l.dtype == np.float16
def test_states(self):
input = torch.randn([1, 3, 10, 10])
def pred_with_dropout(replicate_in_memory):
self.wrapper = ModelWrapper(
self.model,
self.criterion,
replicate_in_memory=replicate_in_memory)
self.wrapper.train()
# Dropout make the pred changes
preds = torch.stack([
self.wrapper.predict_on_batch(input, iterations=1, cuda=False)
for _ in range(10)
]).view(10, -1)
assert not torch.allclose(torch.mean(preds, 0), preds[0])
pred_with_dropout(replicate_in_memory=True)
pred_with_dropout(replicate_in_memory=False)
def pred_without_dropout(replicate_in_memory):
self.wrapper = ModelWrapper(
self.model,
self.criterion,
replicate_in_memory=replicate_in_memory)
# Dropout is not active in eval
self.wrapper.eval()
preds = torch.stack([
self.wrapper.predict_on_batch(input, iterations=1, cuda=False)
for _ in range(10)
]).view(10, -1)
assert torch.allclose(torch.mean(preds, 0), preds[0])
pred_without_dropout(replicate_in_memory=True)
pred_without_dropout(replicate_in_memory=False)
def test_add_metric(self):
self.wrapper.add_metric('cls_report', lambda: ClassificationReport(2))
assert 'test_cls_report' in self.wrapper.metrics
assert 'train_cls_report' in self.wrapper.metrics
self.wrapper.train_on_dataset(self.dataset, self.optim, 32, 2, False)
self.wrapper.test_on_dataset(self.dataset, 32, False)
assert (self.wrapper.metrics['train_cls_report'].value['accuracy'] !=
0).any()
assert (self.wrapper.metrics['test_cls_report'].value['accuracy'] !=
0).any()
def test_train_and_test(self):
res = self.wrapper.train_and_test_on_datasets(
self.dataset,
self.dataset,
self.optim,
32,
5,
False,
return_best_weights=False)
assert len(res) == 5
res = self.wrapper.train_and_test_on_datasets(self.dataset,
self.dataset,
self.optim,
32,
5,
False,
return_best_weights=True)
assert len(res) == 2
assert len(res[0]) == 5
assert isinstance(res[1], dict)
mock = Mock()
mock.side_effect = (((np.linspace(0, 50) - 10) / 10)**2).tolist()
self.wrapper.test_on_dataset = mock
res = self.wrapper.train_and_test_on_datasets(self.dataset,
self.dataset,
self.optim,
32,
50,
False,
return_best_weights=True,
patience=1)
assert len(res) == 2
assert len(res[0]) < 50
mock = Mock()
mock.side_effect = (((np.linspace(0, 50) - 10) / 10)**2).tolist()
self.wrapper.test_on_dataset = mock
res = self.wrapper.train_and_test_on_datasets(self.dataset,
self.dataset,
self.optim,
32,
50,
False,
return_best_weights=True,
patience=1,
min_epoch_for_es=20)
assert len(res) == 2
assert len(res[0]) < 50 and len(res[0]) > 20
class ModelWrapperMultiOutTest(unittest.TestCase):
def setUp(self):
class MultiOutModel(nn.Module):
def __init__(self):
super().__init__()
self.model = DummyModel()
def forward(self, x):
return [self.model(x)] * 2
self._crit = nn.MSELoss()
self.criterion = lambda x, y: self._crit(x[0], y) + self._crit(x[1], y)
self.model = MultiOutModel()
self.wrapper = ModelWrapper(self.model, self.criterion)
self.optim = torch.optim.SGD(self.wrapper.get_params(), 0.01)
self.dataset = DummyDataset()
def test_train_on_batch(self):
self.wrapper.train()
old_param = list(map(lambda x: x.clone(), self.model.parameters()))
input, target = [torch.stack(v) for v in zip(*(self.dataset[0], self.dataset[1]))]
self.wrapper.train_on_batch(input, target, self.optim)
new_param = list(map(lambda x: x.clone(), self.model.parameters()))
assert any([not torch.allclose(i, j) for i, j in zip(old_param, new_param)])
def test_test_on_batch(self):
self.wrapper.eval()
input, target = [torch.stack(v) for v in zip(*(self.dataset[0], self.dataset[1]))]
preds = torch.stack(
[self.wrapper.test_on_batch(input, target, cuda=False) for _ in range(10)]
).view(10, -1)
# Same loss
assert torch.allclose(torch.mean(preds, 0), preds[0])
preds = torch.stack(
[
self.wrapper.test_on_batch(
input, target, cuda=False, average_predictions=10
)
for _ in range(10)
]
).view(10, -1)
assert torch.allclose(torch.mean(preds, 0), preds[0])
def test_predict_on_batch(self):
self.wrapper.eval()
input = torch.stack((self.dataset[0][0], self.dataset[1][0]))
# iteration == 1
pred = self.wrapper.predict_on_batch(input, 1, False)
assert pred[0].size() == (2, 1, 1)
# iterations > 1
pred = self.wrapper.predict_on_batch(input, 10, False)
assert pred[0].size() == (2, 1, 10)
def test_train(self):
history = self.wrapper.train_on_dataset(self.dataset, self.optim, 10, 2, use_cuda=False,
workers=0)
assert len(history) == 2
def test_test(self):
l = self.wrapper.test_on_dataset(self.dataset, 10, use_cuda=False, workers=0)
assert np.isfinite(l)
l = self.wrapper.test_on_dataset(
self.dataset, 10, use_cuda=False, workers=0, average_predictions=10
)
assert np.isfinite(l)
def test_predict(self):
l = self.wrapper.predict_on_dataset(self.dataset, 10, 20, use_cuda=False, workers=0)
self.wrapper.eval()
assert np.allclose(
self.wrapper.predict_on_batch(self.dataset[0][0].unsqueeze(0), 20)[0].detach().numpy(),
l[0][0])
assert np.allclose(
self.wrapper.predict_on_batch(self.dataset[19][0].unsqueeze(0), 20)[0][
0].detach().numpy(),
l[0][19])
assert l[0].shape == (len(self.dataset), 1, 20)
# Test generators
l_gen = self.wrapper.predict_on_dataset_generator(self.dataset, 10, 20, use_cuda=False,
workers=0)
assert np.allclose(next(l_gen)[0][0], l[0][0])
for last in l_gen:
pass # Get last item
assert np.allclose(last[0][-1], l[0][-1])
# Test Half
l_gen = self.wrapper.predict_on_dataset_generator(self.dataset, 10, 20, use_cuda=False,
workers=0, half=True)
l = self.wrapper.predict_on_dataset(self.dataset, 10, 20, use_cuda=False, workers=0,
half=True)
assert next(l_gen)[0].dtype == np.float16
assert l[0].dtype == np.float16
def main():
args = parse_args()
use_cuda = torch.cuda.is_available()
torch.backends.cudnn.benchmark = True
random.seed(1337)
torch.manual_seed(1337)
if not use_cuda:
print("warning, the experiments would take ages to run on cpu")
hyperparams = vars(args)
active_set, test_set = get_datasets(hyperparams['initial_pool'])
heuristic = get_heuristic(hyperparams['heuristic'],
hyperparams['shuffle_prop'])
criterion = CrossEntropyLoss()
model = vgg16(pretrained=False, num_classes=10)
weights = load_state_dict_from_url(
'https://download.pytorch.org/models/vgg16-397923af.pth')
weights = {k: v for k, v in weights.items() if 'classifier.6' not in k}
model.load_state_dict(weights, strict=False)
# change dropout layer to MCDropout
model = patch_module(model)
if use_cuda:
model.cuda()
optimizer = optim.SGD(model.parameters(),
lr=hyperparams["lr"],
momentum=0.9)
# Wraps the model into a usable API.
model = ModelWrapper(model, criterion)
logs = {}
logs['epoch'] = 0
# for prediction we use a smaller batchsize
# since it is slower
active_loop = ActiveLearningLoop(active_set,
model.predict_on_dataset,
heuristic,
hyperparams.get('n_data_to_label', 1),
batch_size=10,
iterations=hyperparams['iterations'],
use_cuda=use_cuda)
for epoch in tqdm(range(args.epoch)):
model.train_on_dataset(active_set, optimizer,
hyperparams["batch_size"], 1, use_cuda)
# Validation!
model.test_on_dataset(test_set, hyperparams["batch_size"], use_cuda)
metrics = model.metrics
if epoch % hyperparams['learning_epoch'] == 0:
should_continue = active_loop.step()
model.reset_fcs()
if not should_continue:
break
val_loss = metrics['test_loss'].value
logs = {
"val": val_loss,
"epoch": epoch,
"train": metrics['train_loss'].value,
"labeled_data": active_set._labelled,
"Next Training set size": len(active_set)
}
print(logs)