def test_batch_norm_storage(self):
x_train, x_test, y_train, y_test = simple_classification()
batch_norm = layers.BatchNorm()
gdnet = algorithms.MinibatchGradientDescent(
[
layers.Input(10),
layers.Relu(5),
batch_norm,
layers.Sigmoid(1),
],
batch_size=10,
)
gdnet.train(x_train, y_train)
error_before_save = gdnet.prediction_error(x_test, y_test)
mean_before_save = batch_norm.running_mean.get_value()
inv_std_before_save = batch_norm.running_inv_std.get_value()
with tempfile.NamedTemporaryFile() as temp:
storage.save(gdnet, temp.name)
storage.load(gdnet, temp.name)
error_after_load = gdnet.prediction_error(x_test, y_test)
mean_after_load = batch_norm.running_mean.get_value()
inv_std_after_load = batch_norm.running_inv_std.get_value()
self.assertAlmostEqual(error_before_save, error_after_load)
np.testing.assert_array_almost_equal(mean_before_save,
mean_after_load)
np.testing.assert_array_almost_equal(inv_std_before_save,
inv_std_after_load)
def test_batch_norm_storage(self):
x_train, x_test, y_train, y_test = simple_classification()
batch_norm = layers.BatchNorm()
gdnet = algorithms.GradientDescent(
[
layers.Input(10),
layers.Relu(5),
batch_norm,
layers.Sigmoid(1),
],
batch_size=10,
verbose=True, # keep it as `True`
)
gdnet.train(x_train, y_train, epochs=5)
error_before_save = gdnet.prediction_error(x_test, y_test)
mean_before_save = self.eval(batch_norm.running_mean)
variance_before_save = self.eval(batch_norm.running_inv_std)
with tempfile.NamedTemporaryFile() as temp:
storage.save(gdnet, temp.name)
storage.load(gdnet, temp.name)
error_after_load = gdnet.prediction_error(x_test, y_test)
mean_after_load = self.eval(batch_norm.running_mean)
variance_after_load = self.eval(batch_norm.running_inv_std)
self.assertAlmostEqual(error_before_save, error_after_load)
np.testing.assert_array_almost_equal(mean_before_save,
mean_after_load)
np.testing.assert_array_almost_equal(variance_before_save,
variance_after_load)
def test_simple_storage(self):
connection = layers.join(
layers.Input(10),
layers.Sigmoid(5),
layers.Sigmoid(2),
)
with tempfile.NamedTemporaryFile() as temp:
storage.save(connection, temp.name)
temp.file.seek(0)
filesize_after = os.path.getsize(temp.name)
self.assertGreater(filesize_after, 0)
data = pickle.load(temp.file)
self.assertIn('sigmoid-1', data)
self.assertIn('sigmoid-2', data)
self.assertIn('weight', data['sigmoid-1'])
self.assertIn('bias', data['sigmoid-1'])
self.assertIn('weight', data['sigmoid-2'])
self.assertIn('bias', data['sigmoid-2'])
self.assertEqual(data['sigmoid-1']['weight'].shape, (10, 5))
self.assertEqual(data['sigmoid-1']['bias'].shape, (5,))
self.assertEqual(data['sigmoid-2']['weight'].shape, (5, 2))
self.assertEqual(data['sigmoid-2']['bias'].shape, (2,))
def test_batch_norm_storage(self):
x_train, x_test, y_train, y_test = simple_classification()
batch_norm = layers.BatchNorm()
gdnet = algorithms.MinibatchGradientDescent(
[
layers.Input(10),
layers.Relu(5),
batch_norm,
layers.Sigmoid(1),
],
batch_size=10,
)
gdnet.train(x_train, y_train)
error_before_save = gdnet.prediction_error(x_test, y_test)
mean_before_save = batch_norm.running_mean.get_value()
inv_std_before_save = batch_norm.running_inv_std.get_value()
with tempfile.NamedTemporaryFile() as temp:
storage.save(gdnet, temp.name)
storage.load(gdnet, temp.name)
error_after_load = gdnet.prediction_error(x_test, y_test)
mean_after_load = batch_norm.running_mean.get_value()
inv_std_after_load = batch_norm.running_inv_std.get_value()
self.assertAlmostEqual(error_before_save, error_after_load)
np.testing.assert_array_almost_equal(mean_before_save,
mean_after_load)
np.testing.assert_array_almost_equal(inv_std_before_save,
inv_std_after_load)
def on_epoch_end(network):
if network.last_epoch in steps:
print("Saving pre-trained VIN model...")
storage.save(network, env['pretrained_network_file'])
new_step = steps[network.last_epoch]
session = tensorflow_session()
network.variables.step.load(new_step, session)
def reset_log(self):
F = open("Logs/Rede3_4-12-8-3/R3_" + str(amostra) + ".txt", "a")
F.write(str(int(self.distance_car)) + "\n")
if (self.resetCount >= 120):
storage.save(
nn,
filepath=
f'Saves/Rede3_4-12-8-3/motorista{amostra}_{CODINOME}_g{self.resetCount}_d{self.maxDistance:.0f}.hdf5'
)
sys.exit()
def on_epoch_end(gdnet):
epoch = gdnet.last_epoch
errors = gdnet.validation_errors
if errors.previous() and errors.last() > errors.previous():
# Load parameters and stop training
storage.load(gdnet, 'training-epoch-{}.pickle'.format(epoch - 1))
raise StopTraining("Training has been interrupted")
else:
# Save parameters after successful epoch
storage.save(gdnet, 'training-epoch-{}.pickle'.format(epoch))
def on_epoch_end(network):
epoch = network.last_epoch
errors[epoch] = network.prediction_error(x_test, y_test)
if epoch == 4:
storage.load(
network.connection,
os.path.join(tempdir, 'training-epoch-2'))
raise StopTraining('Stop training process after 4th epoch')
else:
storage.save(
network.connection,
os.path.join(tempdir, 'training-epoch-{}'.format(epoch)))
def test_storage_save_conection_from_network(self):
network = algorithms.GradientDescent([
layers.Input(10),
layers.Sigmoid(5),
layers.Sigmoid(2),
])
with tempfile.NamedTemporaryFile() as temp:
storage.save(network, temp.name)
temp.file.seek(0)
filesize_after = os.path.getsize(temp.name)
self.assertGreater(filesize_after, 0)
def test_storage_save_load_save(self):
connection = layers.join(
layers.Input(10),
layers.Sigmoid(5),
layers.Sigmoid(2),
)
with tempfile.NamedTemporaryFile() as temp:
storage.save(connection, temp.name)
temp.file.seek(0)
filesize_first = os.path.getsize(temp.name)
storage.load(connection, temp.name)
with tempfile.NamedTemporaryFile() as temp:
storage.save(connection, temp.name)
temp.file.seek(0)
filesize_second = os.path.getsize(temp.name)
self.assertEqual(filesize_first, filesize_second)
print("Initializing VIN...")
network = algorithms.RMSProp(
create_VIN(
env['input_image_shape'],
n_hidden_filters=150,
n_state_filters=10,
k=env['k'],
),
verbose=True,
error=loss_function,
epoch_end_signal=on_epoch_end_from_steps(env['steps']),
**env['training_options']
)
print("Training VIN...")
network.train(
(x_train, s1_train, s2_train), y_train,
(x_test, s1_test, s2_test), y_test,
epochs=env['epochs'],
)
if not os.path.exists(MODELS_DIR):
os.mkdir(MODELS_DIR)
print("Saving pre-trained VIN model...")
storage.save(network, env['pretrained_network_file'])
print("Evaluating accuracy on test set...")
evaluate_accuracy(network.predict, x_test, s1_test, s2_test)
if args.use_pretrained:
if not os.path.exists(CARTPOLE_WEIGHTS):
raise OSError("Cannot find file with pretrained weights "
"(File name: {})".format(CARTPOLE_WEIGHTS))
print("Loading pretrained weights")
storage.load(network, CARTPOLE_WEIGHTS)
else:
print("Start training")
train_network(
env,
network,
memory,
n_games=150, # Number of games that networks is going to play,
max_score=200, # Maximum score that network can achive in the game
epsilon=0.2, # Probability to select random action during the game
gamma=0.99,
)
if not os.path.exists(FILES_DIR):
os.mkdir(FILES_DIR)
print("Saving parameters")
storage.save(network, CARTPOLE_WEIGHTS)
# After the training we can check how network solves the problem
print("Start playing game")
play_game(env, network, n_steps=100000)
deeplab,
error='categorical_crossentropy',
step=0.00001,
verbose=True,
addons=[algorithms.WeightDecay],
decay_rate=0.0001,
)
for i in range(args.epochs):
print("Epoch #{}".format(i + 1))
for x_batch, y_batch in training_iterator():
x_batch = resnet50.predict(x_batch)
optimizer.train(x_batch, y_batch, epochs=1, summary='inline')
print("Start validation")
val_images, val_annotations = next(vaidation_iterator())
segmentation = deeplab.predict(resnet50.predict(val_images))
confusion = get_confusion_matrix(val_annotations, segmentation)
accuracy, miou = segmentation_metrics(confusion)
print("Val accuracy: {:.3f}".format(accuracy))
print("Val miou: {:.3f}".format(miou))
filename = 'deeplab_{:0>3}_{:.3f}_{:.3f}.hdf5'.format(
i, accuracy, miou)
filepath = os.path.join(storage_folder, filename)
print("Saved: {}".format(filepath))
storage.save(deeplab, filepath)
