def test_apply_complex_gradient(input_layer, batch_size):
with DEFAULT_TF_GRAPH.as_default():
machine = Linear(input_layer)
model = Model(inputs=[input_layer], outputs=machine.predictions)
if tensorflow.__version__ >= '1.14':
optimizer = ComplexValuesOptimizer(model,
machine.predictions_jacobian,
name='optimizer',
lr=1.0)
else:
optimizer = ComplexValuesOptimizer(model,
machine.predictions_jacobian,
lr=1.0)
complex_vector_t = K.placeholder(shape=(model.count_params() // 2, 1),
dtype=tensorflow.complex64)
predictions_function = K.function(inputs=[input_layer],
outputs=[machine.predictions])
sample = numpy.random.choice(
2, (batch_size, ) + K.int_shape(input_layer)[1:]) * 2 - 1
predictions_before = predictions_function([sample])[0]
updates = optimizer.apply_complex_gradient(complex_vector_t)
apply_gradients_function = K.function(
inputs=[input_layer, complex_vector_t],
outputs=[machine.predictions],
updates=[updates])
real_vector = numpy.random.normal(size=(model.count_params() // 2, 1,
2))
complex_vector = real_vector[..., 0] + 1j * real_vector[..., 1]
apply_gradients_function([sample, complex_vector])
predictions_after = predictions_function([sample])[0]
diff = predictions_after - predictions_before
manual_diff = sample.reshape((batch_size, -1)) @ complex_vector
diff_norm = numpy.linalg.norm(diff - manual_diff)
res_norm = numpy.linalg.norm(manual_diff)
assert (diff_norm / res_norm) < 1e-5
def assert_n_params(inp, out, expected_size):
model = Model(inputs=inp, outputs=out)
model.compile(optimizer="adam", loss="mean_squared_error")
print(model.count_params())
assert model.count_params() == expected_size
# for test coverage:
model.predict([x, a, e])
def test_compute_wave_function_gradient_covariance_inverse_multiplication(
input_layer, batch_size, diag_shift, iterative):
with DEFAULT_TF_GRAPH.as_default():
machine = Linear(input_layer)
model = Model(inputs=[input_layer], outputs=machine.predictions)
if tensorflow.__version__ >= '1.14':
optimizer = ComplexValuesStochasticReconfiguration(
model,
machine.predictions_jacobian,
diag_shift=diag_shift,
conjugate_gradient_tol=1e-6,
iterative_solver=iterative,
iterative_solver_max_iterations=None,
name='optimizer')
else:
optimizer = ComplexValuesStochasticReconfiguration(
model,
machine.predictions_jacobian,
diag_shift=diag_shift,
conjugate_gradient_tol=1e-6,
iterative_solver=iterative,
iterative_solver_max_iterations=None)
complex_vector_t = K.placeholder(shape=(model.count_params() // 2, 1),
dtype=tensorflow.complex64)
jacobian_minus_mean = machine.manual_jacobian - tensorflow.reduce_mean(
machine.manual_jacobian, axis=0, keepdims=True)
manual_s = tensorflow.eye(model.count_params() // 2,
dtype=tensorflow.complex64) * diag_shift
manual_s += tensorflow.matmul(
jacobian_minus_mean, jacobian_minus_mean,
adjoint_a=True) / tensorflow.cast(batch_size, tensorflow.complex64)
manual_res_t = pinv(manual_s, complex_vector_t)
res_t = optimizer.compute_wave_function_gradient_covariance_inverse_multiplication(
complex_vector_t, jacobian_minus_mean)
res_function = K.function(inputs=[input_layer, complex_vector_t],
outputs=[res_t])
manual_res_function = K.function(
inputs=[input_layer, complex_vector_t], outputs=[manual_res_t])
sample = numpy.random.choice(
2, (batch_size, ) + K.int_shape(input_layer)[1:]) * 2 - 1
real_vector = numpy.random.normal(size=(model.count_params() // 2, 1,
2))
complex_vector = real_vector[..., 0] + 1j * real_vector[..., 1]
res = res_function([sample, complex_vector])[0]
manual_res = manual_res_function([sample, complex_vector])[0]
diff_norm = numpy.linalg.norm(res - manual_res)
res_norm = numpy.linalg.norm(manual_res)
assert (diff_norm / res_norm) < 1e-5
def get_imp_model(model_dim, n_layers, n_heads, dff, time_dim, n_signals):
opt = Adam(CustomSchedule(model_dim),
beta_1=0.9,
beta_2=0.98,
epsilon=1e-9)
# opt = Adam(learning_rate = 1e-2, clipnorm = 1.0)
imp_input = tfl.Input(shape=(time_dim, n_signals))
x = Encoder(num_layers=n_layers,
d_model=model_dim,
time_dim=time_dim,
m_dim=n_signals,
num_heads=n_heads,
dff=dff,
max_time_step=time_dim,
rate=0.1,
imputation_mode=True)(
imp_input) # (batch, time, measure, d_model)
# x = tfl.Reshape((time_dim, model_dim * n_signals))(x) # (batch, time, measure * d_model)
output_layer = tfl.Dense(1)(x) # (batch, time, measure, 1)
imp_model = Model(inputs=imp_input, outputs=output_layer)
imp_model.compile(optimizer=opt, loss=imputation_rmse_loss)
print("The number of parameters in the model: {:,d}".format(
imp_model.count_params()))
return imp_model
def train_lstm():
# Create symbolic vars
x = Input(shape=(None, in_dim), dtype='float32', name='input')
# Create network
# fw_cell = LSTM(hidden_units_size, return_sequences=False,
# implementation=2)(x)
fw_cell = CuDNNLSTM(hidden_units_size, return_sequences=False)(x)
h3 = Dense(classes, activation='softmax', use_bias=False)(fw_cell)
model = Model(inputs=x, outputs=h3)
validate_lstm_in_out(model)
start = timer.perf_counter()
model.compile(optimizer='Adam', loss='categorical_crossentropy')
end = timer.perf_counter()
print('>>> Model compilation took {:.1f} seconds'.format(end - start))
# Print parameter count
params = model.count_params()
print('# network parameters: ' + str(params))
# Start training
batch_time = []
batch_loss = []
train_start = timer.perf_counter()
for i in range(nb_batches):
batch_start = timer.perf_counter()
loss = model.train_on_batch(x=bX,
y=to_categorical(bY, num_classes=classes))
batch_end = timer.perf_counter()
batch_time.append(batch_end - batch_start)
batch_loss.append(loss)
train_end = timer.perf_counter()
print_results(batch_loss, batch_time, train_start, train_end)
def get_siamese_model(input_shape):
'''
https://github.com/akshaysharma096/Siamese-Networks/blob/master/Few%20Shot%20Learning%20-%20V1.ipynb
'''
input_A = Input(input_shape)
input_B = Input(input_shape)
#build conv_net to use in each siamese 'leg'
conv_net = Sequential()
# First layer 任意のkernel_initializerの設定方法を調べる
conv_net.add(Conv2D(filters = 16, kernel_size = (4, 4), padding = 'same', activation = 'relu',
kernel_initializer = RandomNormal(mean = 0, stddev = 0.01)))
conv_net.add(MaxPooling2D(pool_size = (2, 2), padding = 'same'))
# Second layer
conv_net.add(Conv2D(filters = 64, kernel_size = (4, 4), padding = 'same', activation = 'relu',
kernel_initializer = RandomNormal(mean = 0, stddev = 0.01)))
conv_net.add(MaxPooling2D(pool_size = (2, 2), padding = 'same'))
# Third layer
conv_net.add(Conv2D(filters = 32, kernel_size = (4, 4), padding = 'same', activation = 'relu',
kernel_initializer = RandomNormal(mean = 0, stddev = 0.01)))
conv_net.add(MaxPooling2D(pool_size = (2, 2), padding = 'same'))
conv_net.add(Flatten())
conv_net.add(Dense(units = 512, activation = "sigmoid",
# conv_net.add(Dense(units = 1024 * 2 * 2, activation = "sigmoid",
kernel_initializer = RandomNormal(mean = 0, stddev = 0.01),
bias_initializer = RandomNormal(mean = 0.5, stddev = 0.01)))
#call the convnet Sequential model on each of the input tensors so params will be shared
encoded_A = conv_net(input_A)
encoded_B = conv_net(input_B)
#layer to merge two encoded inputs with the l1 distance between them
L1_layer = Lambda(lambda tensors:K.backend.abs(tensors[0] - tensors[1]))
L1_distance = L1_layer([encoded_A, encoded_B])
prediction = Dense(units = 1, activation = 'sigmoid', bias_initializer = RandomNormal(mean = 0.5, stddev = 0.01))(L1_distance)
siamese_net = Model(inputs = [input_A, input_B], outputs = prediction)
optimizer = Adam(0.001)
siamese_net.compile(loss = "binary_crossentropy", optimizer = optimizer)
siamese_net.count_params()
return siamese_net
def make_model(filters=160,
blocks=8,
kernels=(5, 1),
rate=0.001,
freeze_batch_norm=False):
input = Input(shape=(NUM_INPUT_CHANNELS, 8, 8), name='input')
# initial convolution
x = get_conv(filters=filters, kernel_size=kernels[0])(input)
# residual blocks
for i in range(blocks):
x = get_residual_block(x, freeze_batch_norm, i)
# value tower
vt = Flatten()(x)
vt = get_dense(40, regu=0.02)(vt)
vt = Dropout(rate=0.5)(vt)
vt = get_norm(freeze_batch_norm, 'batchnorm-vt')(vt)
vt = get_dense(20, regu=0.04)(vt)
vt = Dropout(rate=0.5)(vt)
value = Dense(1,
activation=tf.nn.tanh,
name='value',
kernel_initializer=initializers.glorot_normal(),
bias_initializer=initializers.zeros(),
bias_regularizer=l2(0.2),
kernel_regularizer=l2(0.4),
activity_regularizer=l2(0.1))(vt)
px = get_conv(filters=8 * 8, activation=None, kernel_size=kernels[1])(x)
pf = Flatten()(px)
policy = Softmax(name='policy')(pf)
model = Model(inputs=input, outputs=[value, policy])
losses = {
'value': 'mean_squared_error',
'policy': 'categorical_crossentropy'
}
weights = {'value': 1.0, 'policy': 1.0}
optimizer = Adam(rate)
model.compile(optimizer=optimizer,
loss=losses,
loss_weights=weights,
metrics=[])
print('Model parameters: %d' % model.count_params())
return model
def main_model(self):
self.config()
# --------------real input
rec_node_feature = Input(shape=(self.residue_num, self.node_feature_length), dtype='float32')
lig_node_feature = Input(shape=(self.residue_num, self.node_feature_length), dtype='float32')
rec_intra_edge_feature = Input(shape=(self.residue_num, self.residue_num, self.edge_feature_length), dtype='float32')
lig_intra_edge_feature = Input(shape=(self.residue_num, self.residue_num, self.edge_feature_length), dtype='float32')
inter_edge_feature = Input(shape=(self.residue_num, self.residue_num, self.edge_feature_length), dtype='float32')
unbound_rec_edge_feature = Input(shape=(self.residue_num, self.residue_num, self.edge_feature_length), dtype='float32')
unbound_lig_edge_feature = Input(shape=(self.residue_num, self.residue_num, self.edge_feature_length), dtype='float32')
unbound_rec_node_feature = Input(shape=(self.residue_num, self.node_feature_length), dtype='float32')
unbound_lig_node_feature = Input(shape=(self.residue_num, self.node_feature_length), dtype='float32')
intra_energy_module = self.folding_stablility_module('intra_model')
inter_energy_module = self.folding_stablility_module('inter_model')
score_rec_intra = intra_energy_module([rec_node_feature, rec_node_feature, rec_intra_edge_feature])
score_lig_intra = intra_energy_module([lig_node_feature, lig_node_feature, lig_intra_edge_feature])
score_rec_unbound = intra_energy_module([unbound_rec_node_feature, unbound_rec_node_feature, unbound_rec_edge_feature])
score_lig_unbound = intra_energy_module([unbound_lig_node_feature, unbound_lig_node_feature, unbound_lig_edge_feature])
score_inter = inter_energy_module([rec_node_feature, lig_node_feature, inter_edge_feature])
def score_get(v):
return v[0]+v[1]+v[2]-v[3]-v[4]
score = Lambda(score_get)([score_rec_intra, score_lig_intra, score_inter, score_rec_unbound, score_lig_unbound])
Final_GCN = Model(inputs=[rec_node_feature, lig_node_feature, rec_intra_edge_feature, lig_intra_edge_feature, inter_edge_feature,
unbound_rec_node_feature, unbound_lig_node_feature, unbound_rec_edge_feature, unbound_lig_edge_feature],
outputs=score)
Final_GCN.summary()
print(Final_GCN.count_params())
return Final_GCN
for hid_dim_1 in dim_hidden_layres:
print('========', 'hid_dim_0:', hid_dim_0, '; hid_dim_1:', hid_dim_1,
'========')
model = CNNModel(hid_dim_0=hid_dim_0, hid_dim_1=hid_dim_1)
model = model.build()
model.compile(optimizer='adam',
loss='sparse_categorical_crossentropy',
metrics=['acc'])
callbacks = [
EarlyStopping(patience=3),
ModelCheckpoint(filepath=os.path.join(
'models', 'CNN', 'model_{}_{}.h5'.format(hid_dim_0,
hid_dim_1)),
save_best_only=True),
]
n_param = model.count_params()
model.fit(x=x_train,
y=y_train,
batch_size=128,
epochs=100,
callbacks=callbacks,
validation_split=0.2)
acc = accuracy_score(y_test, model.predict(x_test).argmax(axis=-1))
df_accuracy = pd.concat([
df_accuracy,
pd.DataFrame(
[[hid_dim_0, hid_dim_1, n_param, acc]],
columns=['hid_dim_0', 'hid_dim_1', 'n_param', 'accuracy'])
])
# -
output_channels=input_sz[-1])
generator = Model(g_input, g_output, name='generator')
# Build GAN
# ---------------------------------------------------------
# The generator and discriminator are both in keras' trainable=True mode
# which means that batchnorm and dropout will be applied as intended.
# We will update only the generators weights during training of this model.
g_output_gan = generator(g_input)
d_output_gan = discriminator([g_output_gan, g_input])
gan = Model(g_input, [g_output_gan, d_output_gan], name='gan')
# Display setup details
# ---------------------------------------------------------
print_setup(tf.__version__, tf.executing_eagerly(), args,
discriminator.count_params(), generator.count_params(),
gan.count_params())
# Training loop
# --------------------------------------------------------
# Initialize metrics
train_metrics = Metrics(metrics_csv_pth)
start_time = datetime.datetime.now()
# PatchGan discriminator labels, arrays of ones or zeroes
real = np.ones((batch_size, ) + discriminator_output_sz) # real => 1
fake = np.zeros((batch_size, ) + discriminator_output_sz) # fake => 0
for epoch in range(epochs):
# update training results webpage
gen_checkpoint(gan, check_loader, epoch, checkpoints_pth)
bias_initializer = RandomNormal(mean = 0.5, stddev = 0.01)))
#call the convnet Sequential model on each of the input tensors so params will be shared
encoded_A = conv_net(input_A)
encoded_B = conv_net(input_B)
#layer to merge two encoded inputs with the l1 distance between them
L1_layer = Lambda(lambda tensors:K.backend.abs(tensors[0] - tensors[1]))
L1_distance = L1_layer([encoded_A, encoded_B])
prediction = Dense(units = 1, activation = 'sigmoid', bias_initializer = RandomNormal(mean = 0.5, stddev = 0.01))(L1_distance)
siamese_net = Model(inputs = [input_A, input_B], outputs = prediction)
optimizer = Adam(0.001)
siamese_net.compile(loss = "binary_crossentropy", optimizer = optimizer)
siamese_net.count_params()
print('Model Building Finished')
def get_pair_train_data(label_list, img_list, replace = False):
labels = np.random.choice(nb_class, size = 2, replace = replace)
label_pair = [ label_list[labels[0]], label_list[labels[1]], ]
img_pair = [ img_list[labels[0]], img_list[labels[1]], ]
return label_pair, img_pair
print('Training Loop Started')
n_iter = 10
def generate_model(self,
hp_schema,
comp_schema,
regression=True,
model_tag=None):
'''
Method for generating the tensorflow graph employed as linear model
Args:
- hp_schema: a dictionary, it stores the schema for
the hyperparameters
Example:
{'dropout' : float specifying the ammount of input
features masked to zero,
'regularizer' : keras regularizer object, specify the
type regularization applied to the
weights matrix this allows to have lasso
, ridge or elasticnet models
}
- comp_schema: a dictionary, it stores the schema for
compiling the model
Example:
{optimizer: string or keras optimizer, optimization
algorithm employed,
loss: string or keras loss, loss minimized by
the optimizer,
metrics: list of strings or keras metrics, additional
metrics computed for monitoring convergence
}
- regression: a bolean, it specify wether the model is target to a
regression or classification task
- tag: a string, specify the model identifier applied to each layer
Returns:
- None
'''
if model_tag is None:
model_tag = 'reg' if regression else 'clas'
setattr(self, 'hp_schema', hp_schema)
setattr(self, 'model_tag', model_tag)
input = Input(shape=(self.X_train[1], ),
name='input_{}'.format(model_tag))
dropout_input = Dropout(
rate=self.hp_schema['dropout'],
name='dopout_input_{}'.format(model_tag))(input)
matmul = Dense(
units=self.y_train[1],
name='matmul_{}'.format(model_tag),
kernel_regularizer=self.hp_schema['regularizer'])(dropout_input)
if regression:
link = Activation(
'linear', name='identity_link_{}'.format(model_tag))(matmul)
elif not regression and self.y_train[1] > 1:
link = Activation('softmax',
name='softmax_link_{}'.format(model_tag))(matmul)
else:
link = Activation('sigmoid',
name='sigmoid_link_{}'.format(model_tag))(matmul)
model = Model(inputs=input, outputs=link)
model.compile(optimizer=comp_schema['optimizer'],
loss=comp_schema['loss'],
metrics=comp_schema['metrics'])
setattr(self, '_model', model)
setattr(self, 'n_parameters', model.count_params())
def generate_model(self,
hp_schema,
comp_schema,
sequence_len,
masked=0.0,
prob=False,
model_tag=None):
'''
Method for generating the tensorflow graph employed as
bifurcating model
Args:
- hp_schema: a dictionary of dictionaries, it stores the schemas for
the hyperparameters for each compontet of the model
- comp_schema: a dictionary, it stores the schema
for compiling the model
Example:
{optimizer: string or keras optimizer, optimization
algorithm employed
, loss: string or keras loss,
loss minimized by the optimizer
, metrics: list of strings or keras metrics,
additional metrics computed for
monitoring convergence
, loos_weights: list of floats, weights aplied
to the two lossess of the model
}
- sequence_len: is an integer specifying the maximum length of the
input sequence
- masked: is a float, it specifies the value that will be masked
- prob: a bolean, whether the model will employ dropout at estimation
time allowing for uncertainty estimation
Returns:
- None
'''
if model_tag is None:
model_tag = 'bifurcating'
setattr(self, 'masked', masked)
setattr(self, 'prob', prob)
setattr(self, 'em_schema', hp_schema['em_schema'])
setattr(self, 'td_schema', hp_schema['td_schema'])
setattr(self, 're_schema', hp_schema['re_schema'])
setattr(self, 'fc_schema', hp_schema['fc_schema'])
setattr(self, 'model_tag', model_tag)
# inputs
features_input = Input(shape=(self.X_feat_train[1], ),
name='features_input')
features_reshape = Reshape(
target_shape=(sequence_len, self.X_feat_train[1] // sequence_len),
name='reshape_layer')(features_input)
context_input = Input(shape=(self.X_cont_train[1], ),
name='context_input')
# embedding creation
embedding = self._generate_embedding_block(
input_tensor=context_input,
input_dim=self.em_schema['input_dim'],
output_dim=self.em_schema['output_dim'],
input_length=self.X_cont_train[1],
tag='shared')
# temporal fusion embedding and raw-features
# repeat the result of the embedding for each timestep
embedding = RepeatVector(
sequence_len, name='embedding_temporalization_layer')(embedding)
if masked is not None:
features_padded = Lambda(
self.__apply_special_masking,
name='re_padding_layer',
)([features_reshape, embedding])
features_padded = Masking(mask_value=masked,
name='masking_layer')(features_padded)
else:
features_padded = K.concatenate([features_reshape, embedding])
time_distributed = self._generate_time_distriuted_block(
input_tensor=features_padded,
layers=self.td_schema['layers'],
activation=self.td_schema['activation'],
dropout=self.td_schema['dropout'],
tag='shared',
prob=prob)
recurrent = self._generate_recurrent_block(
input_tensor=time_distributed,
layers=self.re_schema['layers'],
tag='shared')
# regression head
dense_reg = self._generate_fully_connected_block(
input_tensor=recurrent,
layers=self.fc_schema['layers'],
activation=self.fc_schema['activation'],
dropout=self.fc_schema['dropout'],
tag='reg',
prob=prob,
)
output_reg = Dense(units=self.y_reg_train[1],
name='output_dense_reg')(dense_reg)
output_reg = Activation('linear', name='output_linear_reg')(output_reg)
# classification head
dense_clas = self._generate_fully_connected_block(
input_tensor=recurrent,
layers=self.fc_schema['layers'],
activation=self.fc_schema['activation'],
dropout=self.fc_schema['dropout'],
tag='clas',
prob=prob)
output_clas = Dense(units=self.y_clas_train[1],
name='output_dense_clas')(dense_clas)
output_clas = Activation('sigmoid',
name='output_sigmoid_clas')(output_clas)
# build and compile the model
model = Model(inputs=[features_input, context_input],
outputs=[output_reg, output_clas])
model.compile(optimizer=comp_schema['optimizer'],
loss=comp_schema['losses'],
metrics=comp_schema['metrics'],
loss_weights=comp_schema['loss_weights'])
setattr(self, '_model', model)
setattr(self, 'n_parameters', model.count_params())
def generate_model(self,
hp_schema,
comp_schema,
regression=True,
prob=False,
model_tag=None):
'''
Method for generating the tensorflow graph employed as
multilayer perceptron
Args:
- hp_schema: a dictionary, it stores the schema for
the hyperparameters
Example:
{layers : list of integers specifying number of layers
and hidden units ([100, 100, 100])
, 'dropout' : float specifying the ammount of hidden
units masked to zero
, 'activation' : string sepcifying tha activation
function applied between each layer
}
- comp_schema: a dictionary, it stores the schema for
compiling the model
Example:
{optimizer: string or keras optimizer, optimization
algorithm employed
, loss: string or keras loss, loss minimized by
the optimizer
, metrics: list of strings or keras metrics,
additional metrics computed for monitoring
convergence
}
- regression: a bolean, it specify wether the model is target to a
regression or classification task
- prob: a bolean, whether the model will employ dropout at estimation
time allowing for uncertainty estimation
- tag: a string, specify the model identifier applied to each layer
Returns:
- None
'''
setattr(self, 'hp_schema', hp_schema)
setattr(self, 'prob', prob)
if model_tag is None:
model_tag = 'reg' if regression else 'clas'
setattr(self, 'model_tag', model_tag)
input = Input(shape=(self.X_train[1], ),
name='input_{}'.format(model_tag))
fc_block = self._generate_fully_connected_block(
input,
self.hp_schema['layers'],
self.hp_schema['activation'],
self.hp_schema['dropout'],
model_tag,
prob,
)
act = Dense(units=self.y_train[1],
name='act_{}'.format(model_tag))(fc_block)
if regression:
act = Activation(
'linear', name='identity_activation_{}'.format(model_tag))(act)
elif not regression and self.y_train[1] > 1:
act = Activation(
'softmax', name='softmax_activation_{}'.format(model_tag))(act)
else:
act = Activation(
'sigmoid', name='sigmoid_activation_{}'.format(model_tag))(act)
model = Model(inputs=input, outputs=act)
model.compile(optimizer=comp_schema['optimizer'],
loss=comp_schema['loss'],
metrics=comp_schema['metrics'])
setattr(self, '_model', model)
setattr(self, 'n_parameters', model.count_params())
strides=2,
name='TransposedConv_Deconv_id_%d_adapt_layer_%d' %
(self.couche_id, abs(dim_noeud)))(couche)
dim_noeud += 1
Llayer_fin.append(couche)
if len(Llayer_fin) > 1:
couche_fin = Concatenate(axis=-1)(Llayer_fin)
else:
couche_fin = Llayer_fin[0]
couche_fin = Conv2D(filters=3,
kernel_size=2,
padding='SAME',
activation='linear',
name='Convolution_fin_k2_f3')(couche_fin)
model = Model(inputs=G_Layer.couches_graph[0].couche,
outputs=couche_fin,
name='Debruiteur')
print("Nb param : ", model.count_params())
model.compile(
optimizer=tf.keras.optimizers.SGD(
learning_rate=hp.Choice('lr', [1., 0.1, 0.01, 0.001, 10**-4, 10**-5],
default=0.01),
momentum=hp.Choice('momentum',
[1., 0.1, 0.01, 0.001, 10**-4, 10**-5, 0.],
default=0),
nesterov=False),
loss='MSE',
metrics=[]) #custom_accuracy_fct(model.count_params(),7e4),'accuracy'])
#pd.DataFrame(history.history).to_csv("history/%s.csv" % (saved_model))'''
# In[6]:
'''if df_his is None:
df = pd.DataFrame(history.history)
df.to_csv("history_%s.csv" % (saved_model), header=True)
else:
df = pd.concat([df_his, pd.DataFrame(history.history)]).reset_index()
df.to_csv("history_%s.csv" % (saved_model), header=True)'''
from tensorflow.keras.models import load_model
import time
model = load_model("models/%s" % (saved_model))#, custom_objects={'Attention': Attention(params["seq_length"])}
print(model.count_params())
model.summary()
start_time = time.time()
predict = scaler_y.inverse_transform(model.predict(X_test))
print("--- %s seconds ---" % (time.time() - start_time))
#exit()
y_true = scaler_y.inverse_transform(y_test)
from sklearn.metrics import mean_squared_error, mean_absolute_error, mean_squared_log_error
def NRMSD(y_true, y_pred):
rmsd = np.sqrt(mean_squared_error(y_true.flatten(), y_pred.flatten()))
y_min = min(y_true)
y_max = max(y_true)
class HLDRVGG(object):
def __init__(self,
input_dimension,
output_dimension,
number_of_classes=2,
optimizer=None,
dual_outputs=False,
loss_threshold=defaultLossThreshold,
patience=defaultPatience,
dropout_rate=defaultDropoutRate,
reg='HLDR',
max_relu_bound=None,
adv_penalty=0.01,
unprotected=False,
freezeWeights=False,
verbose=False):
self.buildModel(input_dimension,
output_dimension,
number_of_classes=number_of_classes,
dual_outputs=dual_outputs,
loss_threshold=loss_threshold,
patience=patience,
dropout_rate=dropout_rate,
max_relu_bound=max_relu_bound,
adv_penalty=adv_penalty,
unprotected=unprotected,
optimizer=optimizer,
reg=reg,
freezeWeights=freezeWeights,
verbose=verbose)
def buildModel(self,
input_dimension,
output_dimension,
number_of_classes=2,
optimizer=None,
dual_outputs=False,
loss_threshold=defaultLossThreshold,
patience=defaultPatience,
dropout_rate=defaultDropoutRate,
max_relu_bound=None,
adv_penalty=0.01,
unprotected=False,
reg='HLDR',
freezeWeights=False,
verbose=False):
self.input_dimension, self.output_dimension = input_dimension, np.copy(
output_dimension)
self.advPenalty = np.copy(adv_penalty)
self.loss_threshold, self.number_of_classes = np.copy(
loss_threshold), np.copy(number_of_classes)
self.dropoutRate, self.max_relu_bound = np.copy(dropout_rate), np.copy(
max_relu_bound)
self.patience = np.copy(patience)
self.dualOutputs = dual_outputs
self.image_size = 32
self.num_channels = 3
self.num_labels = np.copy(number_of_classes)
self.penaltyCoeff = np.copy(adv_penalty)
#decide an activation function
self.chosenActivation = "relu" if max_relu_bound is not None else "tanh"
if (verbose):
print("input dimension: %s" % str(self.input_dimension))
# define input layer
self.inputLayer = layers.Input(shape=self.input_dimension)
previousLayer = self.inputLayer
#define the adversarial main input layer (only used in training)
self.advInputLayer = layers.Input(shape=self.input_dimension)
previousAdvLayer = self.advInputLayer
#define the hidden layers
self.hiddenLayers = dict()
self.hiddenAdvLayers = dict()
self.poolingLayers = dict()
#define hidden layer outputs
self.hiddenModelOutputs, self.hiddenAdvModelOutputs = dict(), dict()
#layer 0
self.hiddenLayers[0] = layers.Conv2D(
64, (3, 3),
kernel_regularizer=regularizers.l2(5e-5),
activation=self.chosenActivation,
padding='same')
self.hiddenAdvLayers[0] = self.hiddenLayers[0]
previousLayer = self.hiddenLayers[0](previousLayer)
previousAdvLayer = self.hiddenAdvLayers[0](previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[0] = previousLayer
self.hiddenAdvModelOutputs[0] = previousAdvLayer
if (self.dropoutRate > 0):
previousLayer = Dropout(dropout_rate)(previousLayer)
previousAdvLayer = Dropout(dropout_rate)(previousAdvLayer)
#layer 1
self.hiddenLayers[1] = layers.Conv2D(
64, (3, 3),
kernel_regularizer=regularizers.l2(5e-5),
activation=self.chosenActivation,
padding='same')
self.hiddenAdvLayers[1] = self.hiddenLayers[1]
previousLayer = self.hiddenLayers[1](previousLayer)
previousAdvLayer = self.hiddenAdvLayers[1](previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[1] = previousLayer
self.hiddenAdvModelOutputs[1] = previousAdvLayer
#pooling
self.poolingLayers[0] = layers.MaxPool2D((2, 2), padding='same')
previousLayer = self.poolingLayers[0](previousLayer)
previousAdvLayer = self.poolingLayers[0](previousAdvLayer)
if (self.dropoutRate > 0):
previousLayer = Dropout(dropout_rate)(previousLayer)
previousAdvLayer = Dropout(dropout_rate)(previousAdvLayer)
#layer 2
self.hiddenLayers[2] = layers.Conv2D(
128, (3, 3),
kernel_regularizer=regularizers.l2(5e-5),
activation=self.chosenActivation,
padding='same')
self.hiddenAdvLayers[2] = self.hiddenLayers[2]
previousLayer = self.hiddenLayers[2](previousLayer)
previousAdvLayer = self.hiddenAdvLayers[2](previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[2] = previousLayer
self.hiddenAdvModelOutputs[2] = previousAdvLayer
if (self.dropoutRate > 0):
previousLayer = Dropout(dropout_rate)(previousLayer)
previousAdvLayer = Dropout(dropout_rate)(previousAdvLayer)
#layer 3
self.hiddenLayers[3] = layers.Conv2D(
128, (3, 3),
kernel_regularizer=regularizers.l2(5e-5),
activation=self.chosenActivation,
padding='same')
self.hiddenAdvLayers[3] = self.hiddenLayers[3]
previousLayer = self.hiddenLayers[3](previousLayer)
previousAdvLayer = self.hiddenAdvLayers[3](previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[3] = previousLayer
self.hiddenAdvModelOutputs[3] = previousAdvLayer
if (self.dropoutRate > 0):
previousLayer = Dropout(dropout_rate)(previousLayer)
previousAdvLayer = Dropout(dropout_rate)(previousAdvLayer)
# pooling
self.poolingLayers[1] = layers.MaxPool2D((2, 2), padding='same')
previousLayer = self.poolingLayers[1](previousLayer)
previousAdvLayer = self.poolingLayers[1](previousAdvLayer)
#layer 4
self.hiddenLayers[4] = layers.Conv2D(
256, (3, 3),
kernel_regularizer=regularizers.l2(5e-5),
activation=self.chosenActivation,
padding='same')
self.hiddenAdvLayers[4] = self.hiddenLayers[4]
previousLayer = self.hiddenLayers[4](previousLayer)
previousAdvLayer = self.hiddenAdvLayers[4](previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[4] = previousLayer
self.hiddenAdvModelOutputs[4] = previousAdvLayer
if (self.dropoutRate > 0):
previousLayer = Dropout(dropout_rate)(previousLayer)
previousAdvLayer = Dropout(dropout_rate)(previousAdvLayer)
#layer 5
self.hiddenLayers[5] = layers.Conv2D(
256, (3, 3),
kernel_regularizer=regularizers.l2(5e-5),
activation=self.chosenActivation,
padding='same')
self.hiddenAdvLayers[5] = self.hiddenLayers[5]
previousLayer = self.hiddenLayers[5](previousLayer)
previousAdvLayer = self.hiddenAdvLayers[5](previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[5] = previousLayer
self.hiddenAdvModelOutputs[5] = previousAdvLayer
if (self.dropoutRate > 0):
previousLayer = Dropout(dropout_rate)(previousLayer)
previousAdvLayer = Dropout(dropout_rate)(previousAdvLayer)
#layer 6
self.hiddenLayers[6] = layers.Conv2D(
256, (3, 3),
kernel_regularizer=regularizers.l2(5e-5),
activation=self.chosenActivation,
padding='same')
self.hiddenAdvLayers[6] = self.hiddenLayers[6]
previousLayer = self.hiddenLayers[6](previousLayer)
previousAdvLayer = self.hiddenAdvLayers[6](previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[6] = previousLayer
self.hiddenAdvModelOutputs[6] = previousAdvLayer
# pooling
self.poolingLayers[2] = layers.MaxPool2D((2, 2), padding='same')
previousLayer = self.poolingLayers[2](previousLayer)
previousAdvLayer = self.poolingLayers[2](previousAdvLayer)
#layer 7
self.hiddenLayers[7] = layers.Conv2D(
512, (3, 3),
kernel_regularizer=regularizers.l2(5e-5),
activation=self.chosenActivation,
padding='same')
self.hiddenAdvLayers[7] = self.hiddenLayers[7]
previousLayer = self.hiddenLayers[7](previousLayer)
previousAdvLayer = self.hiddenAdvLayers[7](previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[7] = previousLayer
self.hiddenAdvModelOutputs[7] = previousAdvLayer
if (self.dropoutRate > 0):
previousLayer = Dropout(dropout_rate)(previousLayer)
previousAdvLayer = Dropout(dropout_rate)(previousAdvLayer)
#layer 8
self.hiddenLayers[8] = layers.Conv2D(
512, (3, 3),
kernel_regularizer=regularizers.l2(5e-5),
activation=self.chosenActivation,
padding='same')
self.hiddenAdvLayers[8] = self.hiddenLayers[8]
previousLayer = self.hiddenLayers[8](previousLayer)
previousAdvLayer = self.hiddenAdvLayers[8](previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[8] = previousLayer
self.hiddenAdvModelOutputs[8] = previousAdvLayer
if (self.dropoutRate > 0):
previousLayer = Dropout(dropout_rate)(previousLayer)
previousAdvLayer = Dropout(dropout_rate)(previousAdvLayer)
#layer 9
self.hiddenLayers[9] = layers.Conv2D(
512, (3, 3),
kernel_regularizer=regularizers.l2(5e-5),
activation=self.chosenActivation,
padding='same')
self.hiddenAdvLayers[9] = self.hiddenLayers[9]
previousLayer = self.hiddenLayers[9](previousLayer)
previousAdvLayer = self.hiddenAdvLayers[9](previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[9] = previousLayer
self.hiddenAdvModelOutputs[9] = previousAdvLayer
#pooling
self.poolingLayers[3] = layers.MaxPool2D((2, 2), padding='same')
previousLayer = self.poolingLayers[3](previousLayer)
previousAdvLayer = self.poolingLayers[3](previousAdvLayer)
#layer 10
self.hiddenLayers[10] = layers.Conv2D(
512, (3, 3),
kernel_regularizer=regularizers.l2(5e-5),
activation=self.chosenActivation,
padding='same')
self.hiddenAdvLayers[10] = self.hiddenLayers[10]
previousLayer = self.hiddenLayers[10](previousLayer)
previousAdvLayer = self.hiddenAdvLayers[10](previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[10] = previousLayer
self.hiddenAdvModelOutputs[10] = previousAdvLayer
if (self.dropoutRate > 0):
previousLayer = Dropout(dropout_rate)(previousLayer)
previousAdvLayer = Dropout(dropout_rate)(previousAdvLayer)
#layer 11
self.hiddenLayers[11] = layers.Conv2D(
512, (3, 3),
kernel_regularizer=regularizers.l2(5e-5),
activation=self.chosenActivation,
padding='same')
self.hiddenAdvLayers[11] = self.hiddenLayers[11]
previousLayer = self.hiddenLayers[11](previousLayer)
previousAdvLayer = self.hiddenAdvLayers[11](previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[11] = previousLayer
self.hiddenAdvModelOutputs[11] = previousAdvLayer
if (self.dropoutRate > 0):
previousLayer = Dropout(dropout_rate)(previousLayer)
previousAdvLayer = Dropout(dropout_rate)(previousAdvLayer)
#layer 12
self.hiddenLayers[12] = layers.Conv2D(
512, (3, 3),
kernel_regularizer=regularizers.l2(5e-5),
activation=self.chosenActivation,
padding='same')
self.hiddenAdvLayers[12] = self.hiddenLayers[12]
previousLayer = self.hiddenLayers[12](previousLayer)
previousAdvLayer = self.hiddenAdvLayers[12](previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[12] = previousLayer
self.hiddenAdvModelOutputs[12] = previousAdvLayer
# pooling
self.poolingLayers[4] = layers.MaxPool2D((2, 2), padding='same')
previousLayer = self.poolingLayers[4](previousLayer)
previousAdvLayer = self.poolingLayers[4](previousAdvLayer)
#dense layers
previousLayer = layers.Flatten()(previousLayer)
previousAdvLayer = layers.Flatten()(previousAdvLayer)
if (self.dropoutRate > 0):
previousLayer = Dropout(dropout_rate)(previousLayer)
previousAdvLayer = Dropout(dropout_rate)(previousAdvLayer)
self.penultimateDenseLayer = layers.Dense(
512,
activation=self.chosenActivation,
kernel_regularizer=regularizers.l2(5e-5))
self.hiddenLayers[13] = self.penultimateDenseLayer
self.hiddenAdvLayers[13] = self.penultimateDenseLayer
previousLayer = self.penultimateDenseLayer(previousLayer)
previousAdvLayer = self.penultimateDenseLayer(previousAdvLayer)
previousLayer = layers.BatchNormalization()(previousLayer)
previousAdvLayer = layers.BatchNormalization()(previousAdvLayer)
self.hiddenModelOutputs[13] = previousLayer
self.hiddenAdvModelOutputs[13] = previousAdvLayer
if (self.dropoutRate > 0):
previousLayer = Dropout(dropout_rate)(previousLayer)
previousAdvLayer = Dropout(dropout_rate)(previousAdvLayer)
#add the output layer
#size constrained by dimensionality of inputs
# self.logitsLayer = layers.Dense(output_dimension, activation=None, name='logitsLayer')
# self.penultimateLayer = self.logitsActivity = self.logitsLayer(previousLayer)
# self.penultimateAdvLayer = advLogitsActivity = self.logitsLayer(previousAdvLayer)
self.outputLayer = layers.Dense(
output_dimension, activation='softmax',
name='outputlayer') #layers.Activation('softmax')
self.outputActivity = self.outputLayer(previousLayer)
self.advOutputActivity = self.outputLayer(previousAdvLayer)
#set up the logits layer (not just breaking apart the outputlayer because we want to be able to read in old pretrained models, so we'll just invert for this
#softmax^-1 (X) at coordinate i = log(X_i) + log(\sum_j exp(X_j))
self.logitsActivity = K.log(
self.outputActivity) #+ K.log(K.sum(K.exp(self.outputActivity)))
self.advLogitsActivity = K.log(
self.advOutputActivity
) #+ K.log(K.sum(K.exp(self.advOutputActivity)))
self.hiddenModelOutputs[14] = self.logitsActivity
self.hiddenAdvLayers[14] = self.advLogitsActivity
# # setup the models with which we can see states of hidden layers
numberOfHiddenLayers = len(self.hiddenLayers)
#collect adversarial projections and benign projections
benProjs = layers.concatenate([
layers.Flatten()(self.hiddenModelOutputs[curLayer])
for curLayer in range(numberOfHiddenLayers)
])
advProjs = layers.concatenate([
layers.Flatten()(self.hiddenAdvModelOutputs[curLayer])
for curLayer in range(numberOfHiddenLayers)
])
self.benProjs, self.advProjs = benProjs, advProjs
#define our custom loss function depending on how the intializer wants to regularize (i.e., the "reg" argument)
#this is cross_entropy + \sum_layers(abs(benign_projection-adv_projection))
self.unprotected = unprotected
self.reg = reg
if (reg == 'HLDR'):
if (not unprotected):
def customLossWrapper(benProjs,
advProjs,
penaltyCoeff=self.penaltyCoeff):
def customLoss(y_true, y_pred):
return (1 - penaltyCoeff) * K.categorical_crossentropy(
y_true, y_pred) + penaltyCoeff * K.sum(
K.abs(benProjs - advProjs)) / (tf.cast(
K.sum(K.abs(benProjs)), tf.float32))
# return (1-penaltyCoeff)*K.categorical_crossentropy(y_true, y_pred) + penaltyCoeff*K.sum(K.abs(benProjs - advProjs))/(tf.cast(tf.shape(benProjs)[0], tf.float32))
return customLoss
else: #if we are using an unprotected model, don't force the machine to calculate this too
def customLossWrapper(benProjs,
advProjs,
penaltyCoeff=self.penaltyCoeff):
def customLoss(y_true, y_pred):
return K.categorical_crossentropy(y_true, y_pred)
return customLoss
elif (reg == 'HLRDivlayer'):
if (not unprotected):
# numerators = K.abs(layerWiseBenProjs - layerWiseAdvProjs)
summands = [
K.sum(
K.abs(self.hiddenLayers[curLayer].output -
self.hiddenAdvLayers[curLayer].output)) /
K.sum(K.abs(self.hiddenLayers[curLayer].output))
for curLayer in range(numberOfHiddenLayers)
]
def customLossWrapper(summands,
penaltyCoeff=self.penaltyCoeff):
def customLoss(y_true, y_pred):
return (1 - penaltyCoeff) * K.categorical_crossentropy(
y_true, y_pred) + penaltyCoeff * K.sum(summands)
return customLoss
else: #if we are using an unprotected model, don't force the machine to calculate this too
def customLossWrapper(benProjs,
advProjs,
penaltyCoeff=self.penaltyCoeff):
def customLoss(y_true, y_pred):
return K.categorical_crossentropy(y_true, y_pred)
return customLoss
elif (reg == 'FIM'):
# dS = tf.gradients(self.outputLayer, self.inputLayer)
# dS_2 = tf.matmul(dS, tf.reshape(dS, (dS.shape[1], dS.shape[0])))
# eigs = tf.linalg.eigvals(dS_2)
ps = tf.divide(
tf.ones(shape=(tf.shape(self.outputActivity))),
tf.where(self.outputActivity > 0, self.outputActivity,
1e16 * tf.ones_like(self.outputActivity)))
def customLossWrapper(benProjs,
advProjs,
penaltyCoeff=self.penaltyCoeff):
def customLoss(y_true, y_pred):
return (1 - penaltyCoeff) * K.categorical_crossentropy(
y_true, y_pred) + penaltyCoeff * K.sum(ps)
return customLoss
elif (reg == 'logEigen'):
ps = tf.divide(
tf.ones(shape=(tf.shape(self.outputActivity))),
tf.ones_like(self.outputActivity) - tf.math.log(
tf.where(self.outputActivity > 0, self.outputActivity,
1e16 * tf.ones_like(self.outputActivity))))
def customLossWrapper(benProjs,
advProjs,
penaltyCoeff=self.penaltyCoeff):
def customLoss(y_true, y_pred):
return (1 - penaltyCoeff) * K.categorical_crossentropy(
y_true, y_pred) + penaltyCoeff * K.sum(ps)
return customLoss
elif (reg == 'logEigenlogits'):
ps = tf.divide(
tf.ones(shape=(tf.shape(self.logitsActivity))),
tf.ones_like(self.logitsActivity) + tf.math.log(
tf.where(self.logitsActivity > 0, self.logitsActivity,
1e16 * tf.ones_like(self.logitsActivity))))
def customLossWrapper(benProjs,
advProjs,
penaltyCoeff=self.penaltyCoeff):
def customLoss(y_true, y_pred):
return (1 - penaltyCoeff) * K.categorical_crossentropy(
y_true, y_pred) + penaltyCoeff * K.sum(ps)
return customLoss
elif (reg == 'logitFIM'):
ps = tf.divide(
tf.ones(shape=(tf.shape(self.logitsActivity))),
tf.where(self.logitsActivity > 0, self.logitsActivity,
1e16 * tf.ones_like(self.logitsActivity)))
def customLossWrapper(benProjs,
advProjs,
penaltyCoeff=self.penaltyCoeff):
def customLoss(y_true, y_pred):
return (1 - penaltyCoeff) * K.categorical_crossentropy(
y_true, y_pred) + penaltyCoeff * K.sum(ps)
return customLoss
else:
def customLossWrapper(benProjs,
advProjs,
penaltyCoeff=self.penaltyCoeff):
def customLoss(y_true, y_pred):
return K.categorical_crossentropy(y_true, y_pred)
return customLoss
self.sgd = tf.keras.optimizers.Nadam(
) #Adadelta(learning_rate=self.learning_rate)
self.reduceLR = None
#set up data augmentation
self.generator = ImageDataGenerator(
featurewise_center=False, # set input mean to 0 over the dataset
samplewise_center=False, # set each sample mean to 0
featurewise_std_normalization=
False, # divide inputs by std of the dataset
samplewise_std_normalization=False, # divide each input by its std
zca_whitening=False, # apply ZCA whitening
rotation_range=
15, # randomly rotate images in the range (degrees, 0 to 180)
width_shift_range=
0.1, # randomly shift images horizontally (fraction of total width)
height_shift_range=
0.1, # randomly shift images vertically (fraction of total height)
horizontal_flip=False, # randomly flip images
vertical_flip=False)
#convert self.hiddenAdvLayers to a list for the model compilation, ascending order of keys is order of layers
#outputsList is a list of outputs of the model constructed so that the first entry is the true output (ie prediction) layer
#and each subsequent (i, i+1)th entries are the pair of hiddenAdvLayer, hiddenBenignLayer activations
#this is going to be useful for calculating the MAE between benignly and adversarially induced hidden states
outputsList = [self.outputActivity]
oneSideOutputsList = [self.outputActivity]
for curHiddenLayer in range(len(self.hiddenAdvModelOutputs))[:-1]:
oneSideOutputsList.append(self.hiddenModelOutputs[curHiddenLayer])
outputsList.append(self.hiddenAdvModelOutputs[curHiddenLayer])
outputsList.append(self.hiddenModelOutputs[curHiddenLayer])
mainOutputList = [self.outputActivity]
if (self.dualOutputs):
mainOutputList.append(self.logitsActivity)
#mainOutputList.append(self.advOutputActivity)
#mainOutputList.append(self.advLogitsActivity)
# instantiate and compile the model
self.customLossWrapper = customLossWrapper
self.model = Model(inputs=[self.inputLayer, self.advInputLayer],
outputs=mainOutputList,
name='HLDR_vgg_16')
#if we want to use this as a frozen model
if (freezeWeights):
for curWeights in range(len(self.model.layers)):
self.model.layers[curWeights].trainable = False
if (reg == 'HLRlayer'):
self.model.compile(loss=customLossWrapper(summands,
self.penaltyCoeff),
metrics=['acc'],
optimizer=self.sgd)
else:
self.model.compile(loss=customLossWrapper(benProjs, advProjs,
self.penaltyCoeff),
metrics=['acc'],
optimizer=self.sgd)
#setup the models with which we can see states of hidden layers
self.hiddenModel = Model(inputs=[self.inputLayer, self.advInputLayer],
outputs=outputsList,
name='hidden_HLDR_vgg_16')
self.hiddenOneSideModel = Model(
inputs=[self.inputLayer, self.advInputLayer],
outputs=oneSideOutputsList,
name='hidden_oneside_HLDR_vgg_16')
self.hiddenJointLatentModel = Model(
inputs=[self.inputLayer, self.advInputLayer],
outputs=[benProjs],
name='hiddenJointLatentModel')
self.logitModel = Model(inputs=[self.inputLayer, self.advInputLayer],
outputs=[self.logitsActivity],
name='hiddenLogitModel')
# double check weight trainability bug
allVars = self.model.variables
trainableVars = self.model.trainable_variables
allVarNames = [
self.model.variables[i].name
for i in range(len(self.model.variables))
]
trainableVarNames = [
self.model.trainable_variables[i].name
for i in range(len(self.model.trainable_variables))
]
nonTrainableVars = np.setdiff1d(allVarNames, trainableVarNames)
if (verbose):
self.model.summary()
if (len(nonTrainableVars) > 0):
print(
'the following variables are set to non-trainable; ensure that this is correct before publishing!!!!'
)
print(nonTrainableVars)
#set data statistics to default values
self.mean = 0
self.stddev = 1
#this routine is used to collect statistics on training data, as well as to preprocess the training data by normalizing
#i.e. centering and dividing by standard deviation
def normalize(self, inputData, storeStats=False):
if (storeStats):
self.mean = np.mean(inputData)
self.stddev = np.std(inputData)
outputData = (inputData - self.mean) / (self.stddev + 0.0000001)
return outputData
# routine to get a pointer to the optimizer of this model
def getOptimizer(self):
return self.sgd
#
def getVGGWeights(self):
return self.model.get_weights().copy()
def getParameterCount(self):
return self.model.count_params()
# handle data augmentation with multiple inputs (example found on https://stackoverflow.com/questions/49404993/keras-how-to-use-fit-generator-with-multiple-inputs
#so thanks to loannis and Julian
def multiInputDataGenerator(self, X1, X2, Y, batch_size):
genX1 = self.generator.flow(X1, Y, batch_size=batch_size)
genX2 = self.generator.flow(X2, Y, batch_size=batch_size)
while True:
X1g = genX1.next()
X2g = genX2.next()
yield [X1g[0], X2g[0]], X1g[1]
#adversarial order parameter tells us if we're doing adversarial training, so we know if we should normalize to the first or second argument
def train(self,
inputTrainingData,
trainingTargets,
inputValidationData,
validationTargets,
training_epochs=1,
normed=False,
monitor='val_loss',
patience=defaultPatience,
model_path=None,
keras_batch_size=None,
dataAugmentation=False,
adversarialOrder=0):
#if a path isn't provided by caller, just use the current time for restoring best weights from fit
if (model_path is None):
model_path = os.path.join(
'/tmp/models/',
'hlr_vgg16_' + str(int(round(time.time() * 1000))))
#if the data are not normalized, normalize them
trainingData, validationData = [[], []], [[], []]
if (not normed):
#don't store stats from the adversarially attacked data
if (adversarialOrder == 0):
trainingData[0] = self.normalize(inputTrainingData[0],
storeStats=True)
trainingData[1] = self.normalize(inputTrainingData[1],
storeStats=False)
else:
trainingData[1] = self.normalize(inputTrainingData[1],
storeStats=True)
trainingData[0] = self.normalize(inputTrainingData[0],
storeStats=False)
#also don't store stats from validation data
validationData[0] = self.normalize(inputValidationData[0],
storeStats=False)
validationData[1] = self.normalize(inputValidationData[1],
storeStats=False)
else:
trainingData[0] = inputTrainingData[0]
trainingData[1] = inputTrainingData[1]
validationData[0] = inputValidationData[0]
validationData[1] = inputValidationData[1]
#collect our callbacks
earlyStopper = EarlyStopping(monitor=monitor,
mode='min',
patience=patience,
verbose=1,
min_delta=defaultLossThreshold)
checkpoint = ModelCheckpoint(model_path,
verbose=1,
monitor=monitor,
save_weights_only=True,
save_best_only=True,
mode='auto')
callbackList = [earlyStopper, checkpoint]
# history = self.model.fit(trainingData, trainingTargets, epochs=training_epochs, batch_size=keras_batch_size,
# validation_split=validation_split, callbacks=[earlyStopper, self.reduce_lr])
#handle data augmentation
if (not dataAugmentation):
# set up data augmentation
self.generator = ImageDataGenerator(
featurewise_center=False, # set input mean to 0 over the dataset
samplewise_center=False, # set each sample mean to 0
featurewise_std_normalization=False,
# divide inputs by std of the dataset
samplewise_std_normalization=
False, # divide each input by its std
zca_whitening=False, # apply ZCA whitening
# randomly shift images vertically (fraction of total height)
horizontal_flip=False, # randomly flip images
vertical_flip=False)
self.generator.fit(trainingData[0])
history = self.model.fit(
self.multiInputDataGenerator(trainingData[0], trainingData[1],
trainingTargets,
keras_batch_size),
steps_per_epoch=trainingData[0].shape[0] // keras_batch_size,
epochs=training_epochs,
validation_data=(validationData, validationTargets),
callbacks=callbackList,
verbose=1) #self.reduce_lr
else:
# set up data augmentation
self.generator = ImageDataGenerator(
featurewise_center=False, # set input mean to 0 over the dataset
samplewise_center=False, # set each sample mean to 0
featurewise_std_normalization=False,
# divide inputs by std of the dataset
samplewise_std_normalization=
False, # divide each input by its std
zca_whitening=False, # apply ZCA whitening
rotation_range=15,
# randomly rotate images in the range (degrees, 0 to 180)
width_shift_range=0.1,
# randomly shift images horizontally (fraction of total width)
height_shift_range=0.1,
# randomly shift images vertically (fraction of total height)
horizontal_flip=False, # randomly flip images
vertical_flip=False)
self.generator.fit(trainingData[0])
history = self.model.fit(
self.multiInputDataGenerator(trainingData[0], trainingData[1],
trainingTargets,
keras_batch_size),
steps_per_epoch=trainingData[0].shape[0] // keras_batch_size,
epochs=training_epochs,
validation_data=(validationData, validationTargets),
callbacks=callbackList,
verbose=1) #self.reduce_lr
if (not np.isnan(history.history['loss']).any()
and not np.isinf(history.history['loss']).any()):
self.model.load_weights(model_path)
loss, acc = history.history['loss'], history.history['val_acc']
return loss, acc, model_path
def evaluate(self, inputData, targets, batchSize=None):
evalData = [
self.normalize(inputData[0], storeStats=False),
self.normalize(inputData[1], storeStats=False)
]
fullEval = self.model.evaluate(evalData, targets, batch_size=batchSize)
return fullEval
# this method reads our models from the disk at the specified path + name of component of the class + h5
# and reads all other parameters from a pickle file
def readModelFromDisk(self, pathToFile):
#rebuild the model
self.buildModel(self.input_dimension,
self.output_dimension,
self.number_of_classes,
loss_threshold=self.loss_threshold,
patience=self.patience,
dropout_rate=self.dropoutRate,
max_relu_bound=self.max_relu_bound,
adv_penalty=self.advPenalty,
unprotected=self.unprotected,
reg=self.reg,
verbose=verbose)
# set the vgg weights
self.model.load_weights(pathToFile)
# #read in the picklebox
pickleBox = pickle.load(open(pathToFile + '_pickle', 'rb'))
# # self.bottleneckLayer = pickleBox['bottleneckLayer']
# # self.hiddenEncodingLayer = pickleBox['hiddenEncodingLayer']
# # self.inputLayer = pickleBox['inputLayer']
self.reg = pickleBox['reg']
self.chosenActivation = pickleBox['chosenActivation']
self.mean, self.std = pickleBox['scaleMean'], pickleBox['scaleSTD']
class G_Controleur:
prec_echec = True
def __init__(self, hparam):
self.couche_id = 0
self.couches_graph = []
self.nb_liens = 0
self.hp = hparam
self.graph = Digraph("graph", format='png')
self.nb_couches = {
"conv": {
"min": 4,
"max": 20,
"choix": None
},
"deconv": {
"min": 0,
"max": 5,
"choix": None
},
"pool": {
"min": 0,
"max": 5,
"choix": None
},
"add": {
"min": 0,
"max": 30,
"choix": None
},
"dense": {
"min": 0,
"max": 10,
"choix": None
}
}
liste_classes = [G_Conv, G_Deconv, G_Pool, G_Add, G_Dense]
G_Input(self)
# Crée le nb de couches choisies par Keras Tuner et retourne le nb créé
for name, v, Class in zip(self.nb_couches.items(), liste_classes):
v["choix"] = self.hp.Int("nb_" + name,
min_value=v["min"],
max_value=v["max"])
for _ in range(v["choix"]):
Class(self)
G_Output(self)
self.couches_graph[0].eval()
self.lier(0, 1, forcer=True)
for n in self.couches_graph:
n.link()
self.afficher("post_liaison")
#On fournit l'input aux noeuds racines
for n in self.couches_graph:
if len(n.parent) == 0:
print("Liaison théorique entre %d et %d" %
(self.couches_graph[0].couche_id, n.couche_id))
self.lier(self.couches_graph[0].couche_id,
n.couche_id,
forcer=True)
n.couche_input = self.couches_graph[0].couche
self.afficher("ajout_input")
# On lie à l'output
index_output = len(self.couches_graph) - 1
while self.couches_graph[
index_output].__class__.__name__ != "G_Output" and i >= 0:
index_output -= 1
if index_output < 0:
raise Exception("Output missing")
for n in self.couches_graph:
if len(n.enfant) == 0 and n.__class__.__name__ != "G_Output":
self.lier(n.couche_id,
self.couches_graph[index_output].couche_id,
forcer=True)
self.afficher("fin_liaisons")
# On évalue les couches qui peuvent l'être
self.eval_rec(self.couches_graph[:])
# On remet avec une dernière couche à la bonne taille
couche_fin = Conv2D(filters=3,
kernel_size=2,
padding='SAME',
activation='linear',
name='conv_fin_k2_f3')(
self.couches_graph[index_output].couche_output)
#On affiche les graphs
dossier_fichier = os.path.abspath(os.path.dirname(__file__))
for img in os.listdir(dossier_fichier):
if img.endswith(".png"):
os.system("display ./" + img)
# On construit le modèle
self.model = Model(inputs=self.couches_graph[0].couche_output,
outputs=couche_fin,
name='Debruiteur')
self.model.compile(optimizer=tf.keras.optimizers.SGD(
learning_rate=self.hp.Choice(
'lr', [1., 0.1, 0.01, 0.001, 10**-4, 10**-5], default=0.01),
momentum=self.hp.Choice('momentum',
[1., 0.1, 0.01, 0.001, 10**-4, 10**-5, 0.],
default=0),
nesterov=False),
loss='MSE',
metrics=[custom_accuracy])
os.system(
"cp -r /content/Bayesian_optimization '/content/drive/My Drive'")
max_param = -1
if os.path.isfile("/content/Graph_TF/max_param.txt") == True:
with open("/content/Graph_TF/max_param.txt", "r") as f:
for i, l in enumerate(f):
if i == 0:
max_param = int(l.strip())
elif i == 1:
prec_echec = l.strip()
retour_ancienne_exec = int(prec_echec)
max_param = retour_ancienne_exec if (
max_param == -1
and max_param < retour_ancienne_exec
) and G_Controleur.prec_echec == True else max_param
G_Controleur.prec_echec = False
if (self.model.count_params() >= max_param and max_param != -1):
print(
"Trop de parametre avec %d pour ce modèle et précédement échec avec %d (-1 = infini)"
% (self.model.count_params(), max_param))
global trop_param
trop_param = True
return
with open("/content/Graph_TF/max_param.txt", "w") as f:
f.write(str(max_param) + "\n")
f.write(str(self.model.count_params()) + "\n")
def clean(self):
del self.couche_id
del self.nb_liens
for c in self.couches_graph:
c.clean()
del self.graph
def eval_rec(self, nodes):
if len(nodes) == 0:
return
else:
index = 0
while index < len(nodes) and nodes[index].eval() == False:
index += 1
if index == len(nodes):
raise Exception("Modèle impossible")
else:
nodes.pop(index)
return self.eval_rec(nodes)
def new_id(self):
self.couche_id += 1
return self.couche_id - 1
def add_couche(self, couche):
self.couches_graph.append(couche)
def afficher(self, name):
print(
"%d noeuds et %d liens contre %d au max soit %f prct et %d lien par noeud en moyenne"
%
(len(self.couches_graph), self.nb_liens, len(self.couches_graph) *
(len(self.couches_graph) - 1), 10**-2 *
int(10000 * self.nb_liens / (len(self.couches_graph) *
(len(self.couches_graph) - 1))),
self.nb_liens / len(self.couches_graph)))
self.graph.render("./graph_%s" % name)
def lier(self, couche_id_1, couche_id_2, forcer=False, adapt=False):
if adapt == False and (
(self.couches_graph[couche_id_1].invisible_adapt == True
and "Output"
not in self.couches_graph[couche_id_1].__class__.__name__) or
(self.couches_graph[couche_id_2].invisible_adapt == True
and "Output"
not in self.couches_graph[couche_id_2].__class__.__name__)):
return
lien = False
#Vérifications
verifications_ok = couche_id_1 != couche_id_2 and "Output" not in self.couches_graph[
couche_id_1].__class__.__name__ #Ce n'est pas la couche courante
verifications_ok = verifications_ok and "Input" not in self.couches_graph[
couche_id_2].__class__.__name__
verifications_ok = verifications_ok and couche_id_2 not in self.couches_graph[
couche_id_1].parents #Ce n'est pas un parent de la couche mère
if verifications_ok == False:
return
#Calcul de la difference de taille
#nb de réduction de taille (pool = -1 ; deconv = +1) : dimension < 0 => réduit globalement la taille
tailles_source, parents_1 = self.couches_graph[
couche_id_1].get_size_parent_list_parents()
tailles_dest_enfants, enfants_2 = self.couches_graph[
couche_id_2].get_size_enfant_list_enfants()
tailles_dest_parents, parents_2 = self.couches_graph[
couche_id_2].get_size_parent_list_parents()
#Le chemin jusqu'à la racine côté couche courante et le chemin jusqu'aux feuilles n'a pas trop de couche de pooling au total
#Si les dimensions de sortie du layer courant et celles d'entrée du layer cibles coincident
taille_si_lie = 0
if len(tailles_source) != 0:
taille_si_lie += min(tailles_source)
if len(tailles_dest_enfants) != 0:
taille_si_lie += min(tailles_dest_enfants)
if taille_si_lie < -8: #Si on a trop de couches de pooling si on liait les deux couches
lier = False
return
self.couches_graph[couche_id_2].tmp_parents = self.couches_graph[
couche_id_2].parents
self.couches_graph[couche_id_2].tmp_parents.append(
self.couches_graph[couche_id_1].couche_id)
self.couches_graph[couche_id_2].tmp_parents = list(
dict.fromkeys(self.couches_graph[couche_id_2].parents))
verif_boucle = self.couches_graph[couche_id_2].test_actualiser_enfant(
couche_id_1)
if verif_boucle == False:
return
#Vérifie si les tailles sont compatibles
verification_taille = False
if len(self.couches_graph[couche_id_1].parent) == 0:
verification_taille = True
elif len(self.couches_graph[couche_id_2].parent) == 0 and len(
self.couches_graph[couche_id_2].enfant) == 0:
verification_taille = True
else:
diff_taille = tailles_source[0] - (
tailles_dest_parents[0] +
self.couches_graph[couche_id_2].couche_pool -
self.couches_graph[couche_id_2].couche_deconv
) #Calcul la différence entre la taille à la sortie de la première couche et celle à l'entrée!! de la seconde
if diff_taille == 0:
verification_taille = True
else:
couche_adapt = self.couches_graph[couche_id_1]
if diff_taille > 0:
for i in range(diff_taille):
adapt = graph_layer.G_Pool(self)
self.couches_graph[
adapt.couche_id].invisible_adapt = True
self.lier(
couche_adapt.couche_id,
self.couches_graph[adapt.couche_id].couche_id,
forcer=True,
adapt=True)
couche_adapt = self.couches_graph[adapt.couche_id]
else:
for i in range(-diff_taille):
adapt = graph_layer.G_Deconv(self)
self.couches_graph[
adapt.couche_id].invisible_adapt = True
self.lier(
couche_adapt.couche_id,
self.couches_graph[adapt.couche_id].couche_id,
forcer=True,
adapt=True)
couche_adapt = self.couches_graph[adapt.couche_id]
self.lier(self.couches_graph[couche_adapt.couche_id].couche_id,
self.couches_graph[couche_id_2].couche_id,
adapt=True,
forcer=True)
return
test_boucle = self.couches_graph[couche_id_2].test_actualiser_enfant(
couche_id_1)
if test_boucle == False:
return
choix_lien = False
if verification_taille == True and forcer == False:
choix_lien = self.hp.Choice(
"lien_%s%d_%s%d" %
(self.couches_graph[couche_id_1].__class__.__name__,
self.couches_graph[couche_id_1].couche_id_type,
self.couches_graph[couche_id_2].__class__.__name__,
self.couches_graph[couche_id_2].couche_id_type),
[True, False],
default=False)
else:
choix_lien = True
if couche_id_2 == 3:
break_pt2 = -2
if couche_id_1 == 4 and couche_id_2 == 1:
self.afficher("breakpoint")
break_pt = -1
if verification_taille == True and choix_lien == True:
self.nb_liens += 1
self.graph.edge(str(self.couches_graph[couche_id_1].couche_id),
str(self.couches_graph[couche_id_2].couche_id))
self.couches_graph[couche_id_2].parent.append(
self.couches_graph[couche_id_1].couche_id)
self.couches_graph[couche_id_2].parents.append(
self.couches_graph[couche_id_1].couche_id)
self.couches_graph[couche_id_2].parents = list(
dict.fromkeys(self.couches_graph[couche_id_2].parents))
self.couches_graph[couche_id_2].actualiser_enfant()
self.couches_graph[couche_id_1].enfant.append(
self.couches_graph[couche_id_2].couche_id)
