def build_actor(self, discrete=True, action_space=None, activation=None):
print(action_space)
input_image = Input(shape=(84, 84, self.frames))
actual_value = Input(shape=(1, ))
predicted_value = Input(shape=(1, ))
old_prediction = Input(shape=(action_space, ))
x = Conv2D(32, (8, 8), (2, 2), 'same', activation=relu)(input_image)
x = Conv2D(64, (4, 4), (2, 2), 'same', activation=relu)(x)
x = Conv2D(128, (2, 2), (2, 2), 'same', activation=relu)(x)
x = Conv2D(256, (1, 1), (2, 2), 'same', activation=relu)(x)
x = Flatten()(x)
x = Dense(512, activation=relu)(x)
out_actions = Dense(action_space, activation=softmax, name='output')(x)
#out_actions = NoisyDense(action_space, activation=softmax, sigma_init=0.02, name='output')(x)
model = Model(inputs=[
input_image, actual_value, predicted_value, old_prediction
],
outputs=[out_actions])
model.compile(optimizer=Adam(lr=10e-4),
loss=[
proximal_policy_optimization_loss(
actual_value=actual_value,
old_prediction=old_prediction,
predicted_value=predicted_value)
])
model.summary()
return model
def model(self):
# Don't train the discriminator model weights
self.discriminator.trainable = False
# Send the image to the generator model
generator_output = self.generator(self.input_image)
# Send the actual input and generator output to discriminator model
discriminator_out = self.discriminator(
[self.input_image, generator_output])
# Final Model
model = Model(self.input_image, [discriminator_out, generator_output])
optimizer = Adam(lr=0.0002, beta_1=0.5)
model.compile(loss=['binary_crossentropy', 'mae'],
optimizer=optimizer,
loss_weights=[1, 100])
print(
"\n******************************************* GAN Model ********************************************"
)
print(model.summary())
plot_model(model,
"modelplots/pix2pix/gan.png",
show_shapes=True,
show_layer_names=True)
return model
class KerasPolicy:
def __init__(self,
past_measurement_dimensions,
future_measurements_dimensions,
hidden_dim,
action_dimension,
drop_prob=0.2):
"""
Build model, predict only next quality
:param past_measurement_dimensions:
:param future_measurements_dimensions:
:param hidden_dim:
:param action_dimension:
:param drop_prob:
"""
self.policy_past_input = Input(shape=(None, past_measurement_dimensions))
self.policy_past_GRU = GRU(units=hidden_dim,
return_sequences=False, dropout=drop_prob)(self.policy_past_input)
self.policy_future_input = Input(shape=(None, future_measurements_dimensions))
self.policy_future_GRU = GRU(units=hidden_dim, return_sequences=False, dropout=drop_prob)(
self.policy_future_input)
self.policy_dense1 = Dense(units=hidden_dim, activation="relu")
self.policy_dense2 = Dense(activation="softmax", units=action_dimension)
concatenated = concatenate([self.policy_past_GRU, self.policy_future_GRU])
concatenated = self.policy_dense1(concatenated)
self.policy_action_output = self.policy_dense2(concatenated)
self.model = Model(inputs=[self.policy_past_input, self.policy_future_input], outputs=self.policy_action_output)
self.model.compile(loss="categorical_crossentropy", optimizer='adam')
def build_model(self):
frame_shape = list(self.results[0].frame0.shape)
frame_shape[-1] *= 2
input_f01 = Input(shape=frame_shape)
x = Conv2D(32,
kernel_size=8,
strides=4,
padding="valid",
activation='relu')(input_f01)
x = Conv2D(32,
kernel_size=3,
strides=1,
padding="valid",
activation='relu')(x)
x = Flatten()(x)
# forward_back = Dense(4, activation='softmax', name="move_forward_back")(x)
# move_left_right = Dense(3, activation='softmax', name="move_left_right")(x)
# camera_left_right = Dense(3, activation='softmax', name="camera_left_right")(x)
# up_down = Dense(3, activation='softmax', name="up_down")(x)
# model = Model(input_f01, [forward_back, camera_left_right, up_down, move_left_right])
x = Dense(24, activation='relu')(x)
actions = Dense(54, activation='softmax', name="actions")(x)
model = Model(input_f01, actions)
model.compile(Adam(lr=0.001), loss=categorical_crossentropy)
return model
def test_loss_with_sample_weight_in_layer_call(self):
class MyLayer(layers.Layer):
def __init__(self):
super(MyLayer, self).__init__()
self.bias = testing_utils.Bias()
def call(self, inputs):
out = self.bias(inputs[0])
self.add_loss(MAE()(inputs[1], out, inputs[2]))
self.add_loss(
math_ops.reduce_mean(inputs[2] * mae(inputs[1], out)))
return out
inputs = Input(shape=(1, ))
targets = Input(shape=(1, ))
sw = Input(shape=(1, ))
outputs = MyLayer()([inputs, targets, sw])
model = Model([inputs, targets, sw], outputs)
model.predict([self.x, self.y, self.w])
model.compile(optimizer_v2.gradient_descent.SGD(0.05),
run_eagerly=testing_utils.should_run_eagerly(),
experimental_run_tf_function=testing_utils.
should_run_tf_function())
history = model.fit([self.x, self.y, self.w], batch_size=3, epochs=5)
self.assertAllClose(history.history['loss'], [2., 1.8, 1.6, 1.4, 1.2],
1e-3)
output = model.evaluate([self.x, self.y, self.w])
self.assertAlmostEqual(output, 1.0, 3)
output = model.test_on_batch([self.x, self.y, self.w])
self.assertAlmostEqual(output, 1.0, 3)
def get_model(use_model) -> Model:
if use_model == 'MobileNetV2':
conv_model: Model = MobileNetV2(weights='imagenet', include_top=False, input_shape=IMG_SHAPE)
else:
conv_model: Model = ResNet50(weights='imagenet', include_top=False, input_shape=IMG_SHAPE)
layer: Layer
for layer in conv_model.layers:
layer.trainable = False
image_a = Input(IMG_SHAPE)
image_b = Input(IMG_SHAPE)
branch_a = conv_model(image_a)
branch_b = conv_model(image_b)
merged_layers = concatenate([branch_a, branch_b])
merged_layers = GlobalAveragePooling2D()(merged_layers)
merged_layers = Dense(256, activation='relu')(merged_layers)
merged_layers = Dropout(0.1)(merged_layers)
merged_layers = Dense(256, activation='relu')(merged_layers)
merged_layers = Dropout(0.0)(merged_layers)
output = Dense(1, kernel_initializer='normal', activation='linear')(merged_layers)
model = Model(inputs=[image_a, image_b], outputs=output)
model.compile(optimizer=tf.keras.optimizers.Adam(0.00100),
loss='mse',
metrics=[loss_in_fact])
return model
class KerasValue:
def __init__(self,
past_measurement_dimensions,
future_measurements_dimensions,
hidden_dim,
drop_prob=0.2):
"""
V(S) function
:param past_measurement_dimensions:
:param future_measurements_dimensions:
:param hidden_dim:
:param drop_prob:
"""
discriminator_past_input = Input(shape=(None, past_measurement_dimensions))
discriminator_future_input = Input(shape=(None, future_measurements_dimensions))
self.discriminator_past_GRU = GRU(units=hidden_dim, return_sequences=False, dropout=drop_prob)
self.discriminator_future_GRU = GRU(units=hidden_dim, return_sequences=False, dropout=drop_prob)
self.discriminator_dense_1 = Dense(units=hidden_dim // 2, activation="relu")
self.discriminator_dense_2 = Dense(units=hidden_dim // 2, activation="relu")
self.discriminator_dense_3 = Dense(units=hidden_dim // 4, activation="relu")
self.discriminator_dense_final = Dense(units=1)
concatenated = concatenate(
[self.discriminator_past_GRU(discriminator_past_input),
self.discriminator_future_GRU(discriminator_future_input)])
concatenated = self.discriminator_dense_1(concatenated)
concatenated = self.discriminator_dense_2(concatenated)
concatenated = self.discriminator_dense_3(concatenated)
linear_output_layer = self.discriminator_dense_final(concatenated)
self.model = Model(inputs=[discriminator_past_input, discriminator_future_input],
outputs=linear_output_layer)
self.model.compile(loss="mse", optimizer='adam')
class Agent(object):
def __init__(self, name='model', input_num=None, output_num=None):
"""A learning agent that uses tensorflow to create a neural network"""
assert input_num is not None
assert output_num is not None
self.input_num = input_num
self.output_num = output_num
self._build_net()
def _build_net(self):
"""Construct the neural network"""
# Change the network structure here
S = Input(shape=[self.input_num])
h0 = Dense(300, activation="sigmoid")(S)
h1 = Dense(600, activation="sigmoid")(h0)
h2 = Dense(29, activation="sigmoid")(h1)
V = Dense(self.output_num, activation="sigmoid")(h2)
self.model = Model(inputs=S, outputs=V)
self.model.compile(optimizer="adam", loss='mse')
def train(self, x, y, n_epoch=100, batch=32):
"""Train the network"""
self.model.fit(x=x, y=y, epochs=n_epoch, batch_size=batch)
def predict(self, x):
"""Input values to the neural network and return the result"""
a = self.model.predict(x)
return a
class KerasGAIL:
def __init__(self,
past_measurement_dimensions,
future_measurements_dimensions,
hidden_dim,
action_dimension,
drop_prob=0.2):
"""
Keras model for GAIL approach
:param past_measurement_dimensions:
:param future_measurements_dimensions:
:param hidden_dim:
:param action_dimension:
:param drop_prob:
"""
self.policy_model = KerasPolicy(past_measurement_dimensions,
future_measurements_dimensions,
hidden_dim,
action_dimension,
drop_prob=drop_prob)
advantage_input = Input(shape=(1,))
likelihood_action_distributed_input = Input(shape=(action_dimension,))
keras_inputs = []
keras_inputs += [self.policy_model.policy_past_input, self.policy_model.policy_future_input]
keras_inputs += [advantage_input, likelihood_action_distributed_input]
self.gail_training_model = Model(inputs=keras_inputs, outputs=self.policy_model.policy_action_output)
self.gail_training_model.compile(loss=proximal_policy_optimization_loss(advantage=advantage_input,
old_prediction=likelihood_action_distributed_input),
optimizer=Adam(lr=1e-4))
class KerasDiscriminator:
def __init__(self,
past_measurement_dimensions,
future_measurements_dimensions,
hidden_dim,
action_dimension,
drop_prob=0.2):
"""
General purpose keras GRU classifer
:param past_measurement_dimensions:
:param future_measurements_dimensions:
:param hidden_dim:
:param action_dimension:
:param drop_prob:
"""
discriminator_past_input = Input(shape=(None, past_measurement_dimensions))
discriminator_future_input = Input(shape=(None, future_measurements_dimensions))
discriminator_action_input = Input(shape=(action_dimension,))
self.discriminator_past_GRU = GRU(units=hidden_dim, return_sequences=False, dropout=drop_prob)
self.discriminator_future_GRU = GRU(units=hidden_dim, return_sequences=False, dropout=drop_prob)
self.discriminator_dense_1 = Dense(units=hidden_dim, activation="relu")
self.discriminator_dense_2 = Dense(units=hidden_dim, activation="relu")
self.discriminator_dense_final = Dense(activation="softmax", units=2) # We predict two -> Is it real or not
concatenated = concatenate(
[self.discriminator_past_GRU(discriminator_past_input),
self.discriminator_future_GRU(discriminator_future_input)])
concatenated = self.discriminator_dense_1(concatenated)
concatenated = concatenate([concatenated, discriminator_action_input])
concatenated = self.discriminator_dense_2(concatenated)
discriminator_likelihood = self.discriminator_dense_final(concatenated)
self.model = Model(inputs=[discriminator_past_input, discriminator_future_input,
discriminator_action_input], outputs=discriminator_likelihood)
self.model.compile(loss="categorical_crossentropy", optimizer='adam')
def create_keras_model(inputShape, learning_rate):
# Model input
inputs = Input(shape=inputShape)
# Convolutional layers
x = Conv2D(32, kernel_size=(3, 3), activation='relu')(inputs)
x = Conv2D(32, kernel_size=(3, 3), activation='relu')(x)
x = MaxPooling2D(pool_size=(2, 2))(x)
x = Dropout(0.25)(x)
# Fully connected Dense layers
x = Flatten()(x)
x = Dense(128, activation='relu')(x)
x = Dropout(0.5)(x)
outputs = Dense(10, activation='softmax')(x)
model = Model(inputs=inputs, outputs=outputs, name='myModel')
# Custom Optimizer:
# https://www.tensorflow.org/api_docs/python/tf/train/RMSPropOptimizer
optimizer = tf.keras.optimizers.RMSprop(lr=learning_rate)
# Compile Keras model
model.compile(loss='categorical_crossentropy',
optimizer=optimizer,
metrics=['accuracy'])
return model
def autoencoder():
input_image = Input(shape=(784, ))
# Encoder
encoder = Dense(units=784, activation='relu')(input_image)
encoder = Dense(units=512, activation='relu')(encoder)
encoder = Dense(units=256, activation='relu')(encoder)
encoder = Dense(units=128, activation='relu')(encoder)
encoder = Dense(units=64, activation='relu')(encoder)
encoder = Dense(units=32, activation='relu')(encoder)
# Decoder
decoder = Dense(units=64, activation='relu')(encoder)
decoder = Dense(units=128, activation='relu')(decoder)
decoder = Dense(units=256, activation='relu')(decoder)
decoder = Dense(units=512, activation='relu')(decoder)
decoder = Dense(units=784, activation='sigmoid')(decoder)
enc = Model(input_image, encoder)
autoenc = Model(input_image, decoder)
autoenc.compile(optimizer='adadelta',
loss='binary_crossentropy',
metrics=['accuracy'])
return enc, autoenc
def VGG16Trunk(image_shape,
input_name,
optimizer,
loss,
metrics,
fine_tuning=False):
x = Input(shape=image_shape, name=input_name)
base_model = VGG16(weights='imagenet', include_top=False, input_tensor=x)
for layer in base_model.layers:
layer.trainable = False
conv_base = base_model.output
a = Flatten()(conv_base)
a = Dense(1024, activation='relu')(a)
a = Dropout(0.5)(a)
y = Dense(NUM_CLASSES, activation='softmax')(a)
model = Model(inputs=x, outputs=y)
model.compile(loss=loss, optimizer=optimizer, metrics=metrics)
return model
def build_model():
""" Builds word2vec model and return training and validation models."""
embedding = Embedding(VOCAB_SIZE,
EMBEDDING_DIM,
input_length=1,
name='embedding')
target_inputs = Input((1, ))
context_inputs = Input((1, ))
target = embedding(target_inputs)
target = Reshape((EMBEDDING_DIM, 1))(target)
context = embedding(context_inputs)
context = Reshape((EMBEDDING_DIM, 1))(context)
# setup a cosine similarity operation which will be output in a secondary model
similarity = Dot(axes=0, normalize=True)([target, context])
# now perform the dot product operation to get a similarity measure
dot_product = Dot(axes=1)([target, context])
dot_product = Reshape((1, ))(dot_product)
# add the sigmoid output layer
output = Dense(1, activation='sigmoid')(dot_product)
# create the primary training model
model = Model([target_inputs, context_inputs], output)
model.compile(loss='binary_crossentropy', optimizer='rmsprop')
# create a secondary validation model to run our similarity checks during training
val_model = Model([target_inputs, context_inputs], similarity)
return model, val_model
def compile_bidding_model():
# bidding neural net
input1 = Input(shape=(8, 32), dtype=tf.float64, name='x1')
input2 = Input(shape=(4, ), dtype=tf.float64, name='x2')
input3 = Input(shape=(4, 10), dtype=tf.float64, name='x3')
y1 = tf.keras.layers.Dense(units=128,
activation='elu',
kernel_initializer='he_uniform')(input1)
y1 = tf.keras.layers.Flatten()(y1)
y2 = tf.keras.layers.Concatenate(axis=1)([y1, input2])
y2 = tf.keras.layers.Dense(units=128,
activation='elu',
kernel_initializer='he_uniform')(y2)
y2 = tf.keras.layers.Flatten()(y2)
y3 = tf.keras.layers.Dense(units=128,
activation='elu',
kernel_initializer='he_uniform')(input3)
y3 = tf.keras.layers.Flatten()(y3)
y4 = tf.keras.layers.Concatenate(axis=1)([y2, y3])
y4 = tf.keras.layers.Dense(units=128,
activation='elu',
kernel_initializer='he_uniform')(y4)
y = tf.keras.layers.Dense(units=9,
activation='softmax',
kernel_initializer='he_uniform')(y4)
model = Model(inputs=[input1, input2, input3], outputs=y)
# compile and build NN
adam = Adam(lr=0.02, decay=0.01)
model.compile(optimizer='adam',
loss=tf.keras.losses.CategoricalCrossentropy(),
metrics=['accuracy'])
return model
def make_deep_autoencoder(dims,
act='relu',
init='glorot_uniform',
layer_decorator: typing.Optional[typing.Callable[
[Layer, bool], Layer]] = None,
compile=True) -> typing.Tuple[Model, Model]:
r"""Build a fully-connected symmetric autoencoder model.
:param dims: Per-layer neuron counts for the entire AE.
:param act: Activation function for all neurons (except input and output layers)
:param init: Initialization for the weights of every neuron.
:param layer_decorator: Callable that can modify every layer of the network.
:param compile: Compile the model now or leave it up to the caller.
:return: (ae_model, encoder_model), Model of autoencoder and model of encoder
"""
input_img = Input(shape=(dims[0], ), name='input')
n_stacks = len(dims) - 1
assert n_stacks > 0
x = input_img
# internal layers in encoder
for i in range(n_stacks - 1):
x = Dense(dims[i + 1],
activation=act,
kernel_initializer=init,
name='encoder_%d' % i)(x)
if layer_decorator:
x = layer_decorator(x, is_output=False)
# encoder output layer (the last hidden encoding layer in the autoencoder)
# features are extracted from here
x = Dense(dims[-1],
kernel_initializer=init,
name='encoder_%d' % (n_stacks - 1))(x)
if layer_decorator:
x = layer_decorator(x, is_output=False)
encoded = x
# internal layers in decoder
for i in range(n_stacks - 1, 0, -1):
x = Dense(dims[i],
activation=act,
kernel_initializer=init,
name='decoder_%d' % i)(x)
if layer_decorator:
x = layer_decorator(x, is_output=False)
# output
x = Dense(dims[0], kernel_initializer=init, name='decoder_0')(x)
if layer_decorator:
x = layer_decorator(x, is_output=True)
decoded = x
encoder = Model(inputs=input_img, outputs=encoded, name='encoder')
autoencoder = Model(inputs=input_img, outputs=decoded, name='AE')
if compile:
autoencoder.compile(optimizer='adadelta', loss='mse')
return autoencoder, encoder
def build_model(self):
shared_model = self.base_network_build_fn()
t_status = shared_model.output
output = layers.Dense(self.action_num)(t_status)
model = Model(shared_model.input, output, name=self.model_type)
# 这里的优化器，损失没有用
model.compile(optimizer=Adam(lr=self.lr), loss=DDPG_loss)
return model
def define_com_cnn_model(com_cnn):
com_cnn.encode_the_compact_representation_of_the_original_image()
model_com_cnn = Model(com_cnn.input_layer, com_cnn.set_third_block())
model_com_cnn.compile(
loss=[com_cnn_cost_function],
optimizer=the_optimizer
)
return model_com_cnn
def define_rec_model(rec_cnn):
returned_tuple = rec_cnn.set_residual_block()
model_rec_cnn = Model(rec_cnn.upscaled_image, returned_tuple)
model_rec_cnn.compile(
loss=[rec_cnn_cost_function],
optimizer=the_optimizer
)
return model_rec_cnn
class RTSNNet:
def __init__(self, game, encoder):
"""
NNet model, copied from Othello NNet, with reduced fully connected layers fc1 and fc2 and reduced nnet_args.num_channels
:param game: game configuration
:param encoder: Encoder, used to encode game boards
"""
from rts.src.config_class import CONFIG
# game params
self.board_x, self.board_y, num_encoders = game.getBoardSize()
self.action_size = game.getActionSize()
"""
num_encoders = CONFIG.nnet_args.encoder.num_encoders
"""
num_encoders = encoder.num_encoders
# Neural Net
self.input_boards = Input(shape=(
self.board_x, self.board_y,
num_encoders)) # s: batch_size x board_x x board_y x num_encoders
x_image = Reshape(
(self.board_x, self.board_y, num_encoders)
)(self.input_boards) # batch_size x board_x x board_y x num_encoders
h_conv1 = Activation('relu')(BatchNormalization(axis=3)(Conv2D(
CONFIG.nnet_args.num_channels, 3, padding='same', use_bias=False)(
x_image))) # batch_size x board_x x board_y x num_channels
h_conv2 = Activation('relu')(BatchNormalization(axis=3)(Conv2D(
CONFIG.nnet_args.num_channels, 3, padding='same', use_bias=False)(
h_conv1))) # batch_size x board_x x board_y x num_channels
h_conv3 = Activation('relu')(
BatchNormalization(axis=3)(Conv2D(CONFIG.nnet_args.num_channels,
3,
padding='valid',
use_bias=False)(h_conv2))
) # batch_size x (board_x-2) x (board_y-2) x num_channels
h_conv4 = Activation('relu')(
BatchNormalization(axis=3)(Conv2D(CONFIG.nnet_args.num_channels,
3,
padding='valid',
use_bias=False)(h_conv3))
) # batch_size x (board_x-4) x (board_y-4) x num_channels
h_conv4_flat = Flatten()(h_conv4)
s_fc1 = Dropout(CONFIG.nnet_args.dropout)(Activation('relu')(
BatchNormalization(axis=1)(Dense(
256, use_bias=False)(h_conv4_flat)))) # batch_size x 1024
s_fc2 = Dropout(CONFIG.nnet_args.dropout)(Activation('relu')(
BatchNormalization(axis=1)(Dense(
128, use_bias=False)(s_fc1)))) # batch_size x 1024
self.pi = Dense(self.action_size, activation='softmax',
name='pi')(s_fc2) # batch_size x self.action_size
self.v = Dense(1, activation='tanh', name='v')(s_fc2) # batch_size x 1
self.model = Model(inputs=self.input_boards, outputs=[self.pi, self.v])
self.model.compile(
loss=['categorical_crossentropy', 'mean_squared_error'],
optimizer=Adam(CONFIG.nnet_args.lr))
def build_model(self):
# shared_model = self.build_shared_model()
shared_model = self.base_network_build_fn()
t_status = shared_model.output
output = layers.Dense(self.action_num, activation='softmax')(t_status)
model = Model(shared_model.input, output, name=self.model_type)
model.compile(optimizer=Adam(lr=self.lr),
loss=losses.categorical_crossentropy)
return model
def create_deep_autoencoder():
input_shape = Input(shape=(INPUT_LENGTH, ))
model = Model(input_shape, create_deep_decoder(create_deep_encoder(input_shape)))
model.compile(optimizer=Adam(lr=0.0001), loss='binary_crossentropy')
print(model.summary())
return model
def _add_discriminator_block(old_model, config):
# new shape is double the size of previous one
old_input_shape = list(old_model.input.shape)
new_input_shape = (old_input_shape[-2] * 2, old_input_shape[-2] * 2,
old_input_shape[-1])
model_input = Input(shape=new_input_shape, name="doubled_dis_input")
# weights init
w_init = RandomNormal(stddev=0.02)
w_const = max_norm(1.0)
# conv layers
x = model_input
for strides in [1, 3, 3]:
x = Conv2D(config['filters'],
strides,
padding='same',
kernel_initializer=w_init,
kernel_constraint=w_const)(x)
x = LeakyReLU()(x)
x = AveragePooling2D()(x)
new_block = x
# skip the input, 1x1 and activation for the old model
for i in range(config['num_input_layers'], len(old_model.layers)):
x = old_model.layers[i](x)
# define straight-through model
model1 = Model(model_input, x)
# compile model
model1.compile(loss=wasserstein_loss,
optimizer=ProGan.get_optimizer(config))
# downsample the new larger image
downsample = AveragePooling2D()(model_input)
# connect old input processing to downsampled new input
old_block = old_model.layers[1](downsample)
old_block = old_model.layers[2](old_block)
# fade in output of old model input layer with new input
x = WeightedSum()([old_block, new_block])
# skip the input, 1x1 and activation for the old model
for i in range(config['num_input_layers'], len(old_model.layers)):
x = old_model.layers[i](x)
# define fade-in model
model2 = Model(model_input, x)
# compile model
model2.compile(loss=wasserstein_loss,
optimizer=ProGan.get_optimizer(config))
return [model1, model2]
def model_description(self):
filter_sizes = [3, 4, 5]
num_filters = 10
drop = 0.1
embedding_dim = self.EMBEDDING_DIMENTION
inputs = Input(shape=(self.MAX_SEQ_LEN, ), dtype='int32')
embedding = self.embedding_layer()(inputs)
reshape = Reshape((self.MAX_SEQ_LEN, embedding_dim, 1))(embedding)
conv_0 = Conv2D(num_filters,
kernel_size=(filter_sizes[0], embedding_dim),
padding='valid',
kernel_initializer='normal',
activation='relu')(reshape)
conv_1 = Conv2D(num_filters,
kernel_size=(filter_sizes[1], embedding_dim),
padding='valid',
kernel_initializer='normal',
activation='relu')(reshape)
conv_2 = Conv2D(num_filters,
kernel_size=(filter_sizes[2], embedding_dim),
padding='valid',
kernel_initializer='normal',
activation='relu')(reshape)
maxpool_0 = MaxPool2D(pool_size=(self.MAX_SEQ_LEN - filter_sizes[0] +
1, 1),
strides=(1, 1),
padding='valid')(conv_0)
maxpool_1 = MaxPool2D(pool_size=(self.MAX_SEQ_LEN - filter_sizes[1] +
1, 1),
strides=(1, 1),
padding='valid')(conv_1)
maxpool_2 = MaxPool2D(pool_size=(self.MAX_SEQ_LEN - filter_sizes[2] +
1, 1),
strides=(1, 1),
padding='valid')(conv_2)
concatenated_tensor = Concatenate(axis=1)(
[maxpool_0, maxpool_1, maxpool_2])
flatten = Flatten()(concatenated_tensor)
dropout = Dropout(drop)(flatten)
output = Dense(self.num_labels(), activation=self.ACTIVATION)(dropout)
# this creates a model that includes
model = Model(inputs=inputs, outputs=output)
# adam = Adam(lr=1e-4, beta_1=0.9, beta_2=0.999, epsilon=1e-08, decay=0.0)
model.compile(optimizer='adam',
loss=self.LOSS_FUNCTION,
metrics=['accuracy'])
return model
def build_model(self):
# shared_model = build_stacked_rnn_model(self)
shared_model = self.base_network_build_fn()
# shared_model = build_multi_attention_model(self.input_steps)
t_status = shared_model.output
output = layers.Dense(self.action_num, activation='softmax')(t_status)
model = Model(shared_model.input, output, name=self.model_type)
# 这里的优化器，损失都没用
model.compile(optimizer=Adam(lr=self.lr), loss='mse')
return model
def attn_many_to_one(dataset_object: LSTM_data):
X_train, X_test, Y_train, Y_test = dataset_object.get_memory()
X_train, X_test = X_train[:, :, :-12], X_test[:, :, :-12]
i = Input(shape=(X_train.shape[1], X_train.shape[2]))
att_in = LSTM(NEURONS,
return_sequences=True,
activation=ACTIVATION,
recurrent_activation="sigmoid",
activity_regularizer=regularizers.l2(L2),
bias_regularizer=regularizers.l2(BIAIS_REG),
)(i)
att_in = LSTM(NEURONS,
return_sequences=True,
activation=ACTIVATION,
recurrent_activation="sigmoid",
activity_regularizer=regularizers.l2(L2),
bias_regularizer=regularizers.l2(BIAIS_REG),
)(att_in)
att_in = LSTM(NEURONS,
return_sequences=True,
activation=ACTIVATION,
recurrent_activation="sigmoid",
activity_regularizer=regularizers.l2(L2),
bias_regularizer=regularizers.l2(BIAIS_REG),
)(att_in)
att_out = attention()(att_in)
att_out = Dropout(DROPOUT)(att_out)
outputs = Dense(1,
activation='relu',
trainable=True,
bias_regularizer=regularizers.l2(BIAIS_REG),
activity_regularizer=regularizers.l2(L2)
)(att_out)
model = Model(inputs=[i], outputs=[outputs])
optim = Adam()
model.compile(optimizer=optim,
loss=['mean_squared_error']
)
# Fitting the RNN to the Training set
history = model.fit(X_train, Y_train,
epochs=EPOCHS,
batch_size=BATCH_SIZE,
validation_data=(X_test, Y_test),
callbacks=[EARLY_STOP, REDUCE_LR]
)
model.save("data/weights/attn_based_lstm_no_senti")
plot_train_loss(history)
evaluate(model,X_test,Y_test, dataset_object,name="attn_evaluate", senti="no")
def build_model(self):
shared_model = self.base_network_build_fn()
# shared_model = build_multi_attention_model(self.input_steps)
t_status = shared_model.output
output = layers.Dense(self.action_num)(t_status)
model = Model(shared_model.input, output, name=self.model_type)
# model.compile(optimizer=Adam(lr=self.lr), loss=dqn_loss)
model.compile(optimizer=Adam(lr=self.lr), loss='mse')
return model
def make_model_no_reg(classes, points_per_sample, channel_mode='channels_last'):
# creates the Time Distributed CNN for range Doppler heatmap ##########################
mmw_rdpl_input = (int(points_per_sample),) + rd_shape + (1,) if channel_mode == 'channels_last' else (points_per_sample, 1) + rd_shape
mmw_rdpl_TDCNN = Sequential()
mmw_rdpl_TDCNN.add(
TimeDistributed(
Conv2D(filters=8, kernel_size=(3, 3), data_format=channel_mode,
kernel_initializer='random_uniform'),
input_shape=mmw_rdpl_input))
mmw_rdpl_TDCNN.add(TimeDistributed(tf.keras.layers.LeakyReLU(alpha=0.1)))
mmw_rdpl_TDCNN.add(TimeDistributed(BatchNormalization()))
mmw_rdpl_TDCNN.add(TimeDistributed(
Conv2D(filters=16, kernel_size=(3, 3),
)))
mmw_rdpl_TDCNN.add(TimeDistributed(tf.keras.layers.LeakyReLU(alpha=0.1)))
mmw_rdpl_TDCNN.add(TimeDistributed(BatchNormalization()))
mmw_rdpl_TDCNN.add(TimeDistributed(MaxPooling2D(pool_size=2)))
mmw_rdpl_TDCNN.add(TimeDistributed(Flatten())) # this should be where layers meets
# creates the Time Distributed CNN for range Azimuth heatmap ###########################
mmw_razi_input = (int(points_per_sample),) + ra_shape + (1,) if channel_mode == 'channels_last' else (points_per_sample, 1) + ra_shape
mmw_razi_TDCNN = Sequential()
mmw_razi_TDCNN.add(
TimeDistributed(
Conv2D(filters=8, kernel_size=(3, 3),
kernel_initializer='random_uniform'),
input_shape=mmw_razi_input))
mmw_razi_TDCNN.add(TimeDistributed(tf.keras.layers.LeakyReLU(alpha=0.1)))
mmw_razi_TDCNN.add(TimeDistributed(BatchNormalization()))
mmw_razi_TDCNN.add(TimeDistributed(
Conv2D(filters=16, kernel_size=(3, 3), data_format=channel_mode,
)))
mmw_razi_TDCNN.add(TimeDistributed(tf.keras.layers.LeakyReLU(alpha=0.1)))
mmw_razi_TDCNN.add(TimeDistributed(BatchNormalization()))
mmw_razi_TDCNN.add(TimeDistributed(MaxPooling2D(pool_size=2)))
mmw_razi_TDCNN.add(TimeDistributed(Flatten())) # this should be where layers meets
merged = concatenate([mmw_rdpl_TDCNN.output, mmw_razi_TDCNN.output]) # concatenate two feature extractors
regressive_tensor = LSTM(units=32, return_sequences=True, kernel_initializer='random_uniform',
)(merged)
regressive_tensor = Dropout(rate=0.5)(regressive_tensor)
regressive_tensor = LSTM(units=32, return_sequences=False, kernel_initializer='random_uniform',
)(regressive_tensor)
regressive_tensor = Dropout(rate=0.5)(regressive_tensor)
regressive_tensor = Dense(units=256,
)(regressive_tensor)
regressive_tensor = Dropout(rate=0.5)(regressive_tensor)
regressive_tensor = Dense(len(classes), activation='softmax', kernel_initializer='random_uniform')(regressive_tensor)
model = Model(inputs=[mmw_rdpl_TDCNN.input, mmw_razi_TDCNN.input], outputs=regressive_tensor)
adam = tf.keras.optimizers.Adam(lr=5e-5, decay=1e-7)
model.compile(optimizer=adam, loss='categorical_crossentropy', metrics=['accuracy'])
return model
def test_add_entropy_loss_on_functional_model(self):
inputs = Input(shape=(1, ))
targets = Input(shape=(1, ))
outputs = testing_utils.Bias()(inputs)
model = Model([inputs, targets], outputs)
model.add_loss(losses.binary_crossentropy(targets, outputs))
model.compile('sgd', run_eagerly=testing_utils.should_run_eagerly())
with test.mock.patch.object(logging, 'warning') as mock_log:
model.fit([self.x, self.y], batch_size=3, epochs=5)
self.assertNotIn('Gradients do not exist for variables',
str(mock_log.call_args))
def FCN1(input_shape, input_name, optimizer, loss, metrics, regularizer):
x = Input(shape=INPUT_SHAPE, name=INPUT_NAME)
a = Dense(1024, activation='relu', kernel_regularizer=regularizer)(x)
y = Dense(NUM_CLASSES, activation='softmax', kernel_regularizer=regularizer, name='Softmax')(a)
model = Model(x, y, name='FCN1')
model.compile(loss=loss,
optimizer=optimizer,
metrics=metrics)
return model
