def base(x_train, y_train, x_test, y_test):
n_out = {n_out}
input_shape = {input_shape}
batch_size = {batch_size}
epochs = {epochs}
steps_per_epoch = len(x_train) // batch_size
lossfun = '{lossfun}'
optimizer = '{optimizer}'
metrics = ['accuracy']
p = Augmentor.Pipeline()
p.flip_left_right(probability=0.5)
if conditional({{choice([True, False])}}):
p.crop_random(probability=1, percentage_area=0.8)
p.resize(probability=1, width=96, height=96)
if conditional({{choice([True, False])}}):
p.random_erasing(probability=0.5, rectangle_area=0.2)
if conditional({{choice([True, False])}}):
p.shear(probability=0.3, max_shear_left=2, max_shear_right=2)
print('!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!')
p.status()
g = p.keras_generator_from_array(x_train, y_train, batch_size=batch_size)
g = ((x / 255., y) for (x, y) in g)
inputs = Input(shape=input_shape)
x = inputs
x = Conv2D(32, (3, 3))(x)
x = Conv2D(32, (3, 3))(x)
x = Activation('relu')(x)
x = MaxPooling2D(pool_size=(2, 2))(x)
x = Conv2D(64, (3, 3))(x)
x = Conv2D(64, (3, 3))(x)
x = Activation('relu')(x)
x = MaxPooling2D(pool_size=(2, 2))(x)
x = Dropout(0.25)(x)
x = Flatten()(x)
x = Dense(512)(x)
x = Activation('relu')(x)
x = Dropout(0.5)(x)
x = Dense(n_out)(x)
x = Activation('softmax')(x)
model = Model(inputs=inputs, outputs=x)
model.compile(loss=lossfun,
optimizer=keras.optimizers.rmsprop(lr=0.0001, decay=1e-6),
metrics=['accuracy'])
model.fit_generator(
g,
steps_per_epoch=steps_per_epoch,
validation_data=(x_test, y_test),
epochs=epochs,
verbose=2,
)
score, acc = model.evaluate(x_test, y_test, verbose=0)
print('Test accuracy:', acc)
return dict(zip(['loss', 'status', 'model'], [-acc, STATUS_OK, model]))
def model(x_train, y_train, x_test, y_test):
model = Sequential()
model.add(Dense(512, input_shape=(784,)))
model.add(Activation('relu'))
model.add(Dropout({{uniform(0, 1)}}))
model.add(Dense({{choice([128, 256, 512, 1024])}}))
model.add(Activation({{choice(['relu', 'sigmoid', 'tanh'])}}))
model.add(Dropout({{uniform(0, 1)}}))
# If we choose 'fomv ur', add an additional fourth layer
if conditional({{choice(['three', 'four'])}}) == 'four':
model.add(Dense(100))
# We can also choose between complete sets of layers
model.add({{choice([Dropout(0.5), Activation('linear')])}})
model.add(Activation('relu'))
model.add(Dense(10))
model.add(Activation('softmax'))
model.compile(loss='categorical_crossentropy', metrics=['accuracy'],
optimizer={{choice(['rmsprop', 'adam', 'sgd'])}})
model.fit(x_train, y_train,
batch_size={{choice([128, 256])}},
epochs=5,
verbose=2,
validation_data=(x_test, y_test))
score, acc = model.evaluate(x_test, y_test, verbose=0)
print('Test accuracy:', acc)
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def create_model(x_train, y_train, x_test, y_test):
model = Sequential()
model.add(
LSTM(units={{choice([16, 32, 64, 128, 256])}},
input_shape=(x_train.shape[1], x_train.shape[2])))
model.add(Dropout({{uniform(0, 1)}}))
if conditional({{choice(['three', 'four'])}}) == 'four':
model.add(Dense(units={{choice([2, 4, 8, 16, 32, 64, 128, 256])}}))
model.add(Dropout({{uniform(0, 1)}}))
model.add(Dense(1))
model.compile(
loss='mae', # because mse gives me NaN's some times
optimizer={{choice(['rmsprop', 'adam', 'sgd'])}})
model.fit(x_train,
y_train,
batch_size={{choice([8, 16, 32, 64, 128])}},
epochs=50,
verbose=0,
shuffle=False,
validation_data=(x_test, y_test))
mae = model.evaluate(x_test, y_test, verbose=0)
print('MAE:', mae)
return {'loss': mae, 'status': STATUS_OK, 'model': model}
def model(x_train, y_train, x_test, y_test):
# 25 > 10 (relu) dropout > 10 (relu) dropout > 1 (relu)
model = Sequential()
model.add(
Dense(output_dim={{
choice([5, 10, 15, 20, 25, 30, 50, 75, 100, 200, 500])
}},
input_dim=x_train.shape[1]))
model.add(Activation({{choice(['relu', 'sigmoid', 'tanh', 'linear'])}}))
model.add(Dropout({{uniform(0, 1)}}))
# If we choose 'four', add an additional fourth layer
if conditional({{choice(['extra-layer', 'no'])}}) == 'extra-layer':
model.add(
Dense(output_dim={{
choice([5, 10, 15, 20, 25, 30, 50, 75, 100, 200, 500])
}}))
model.add(Activation({{choice(['relu', 'sigmoid', 'tanh',
'linear'])}}))
model.add(Dropout({{uniform(0, 1)}}))
model.add(Dense(output_dim=1))
model.add(Activation({{choice(['relu', 'sigmoid', 'tanh', 'linear'])}}))
model.compile(loss='mean_squared_error',
optimizer={{choice(['rmsprop', 'adam', 'sgd'])}},
metrics=['accuracy'])
model.fit(x_train,
y_train,
batch_size={{choice([32, 64, 128])}},
nb_epoch=10,
validation_data=(x_test, y_test))
score, acc = model.evaluate(x_test, y_test)
print('Test accuracy:', acc)
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def create_model(x_train, y_train, x_test, y_test):
"""
Model providing function:
Create Keras model with double curly brackets dropped-in as needed.
Return value has to be a valid python dictionary with two customary keys:
- loss: Specify a numeric evaluation metric to be minimized
- status: Just use STATUS_OK and see hyperopt documentation if not feasible
The last one is optional, though recommended, namely:
- model: specify the model just created so that we can later use it again.
"""
model = Sequential()
model.add(Dense({{choice([2, 5, 8, 16, 32, 64, 96, 128, 256])}}, input_dim=x_train.shape[1], activation="relu", kernel_initializer="uniform"))
# If we choose 'four', add an additional fourth layer
if conditional({{choice(['one', 'two'])}}) == 'two':
model.add(Dense({{choice([2, 5, 8, 16, 32, 64, 96, 128, 256])}}, activation="relu", kernel_initializer="uniform"))
model.add(Dense(1, activation="linear", kernel_initializer="uniform"))
model.compile(loss='mean_squared_error', optimizer='adam', metrics=['mae'])
model.fit(x_train, y_train,
batch_size=8,
epochs=15,
verbose=2,
validation_data=(x_test, y_test))
score, acc = model.evaluate(x_test, y_test, verbose=0)
print('Test accuracy:', acc)
return {'loss': acc, 'status': STATUS_OK, 'model': model}
def model(X_train, Y_train, X_test, Y_test):
'''
Model providing function:
Create Keras model with double curly brackets dropped-in as needed.
Return value has to be a valid python dictionary with two customary keys:
- loss: Specify a numeric evaluation metric to be minimized
- status: Just use STATUS_OK and see hyperopt documentation if not feasible
The last one is optional, though recommended, namely:
- model: specify the model just created so that we can later use it again.
'''
model = Sequential()
model.add(Dense(512, input_shape=(784, )))
model.add(Activation('relu'))
model.add(Dropout({{uniform(0, 1)}}))
model.add(Dense({{choice([256, 512, 1024])}}))
model.add(Activation({{choice(['relu', 'sigmoid'])}}))
model.add(Dropout({{uniform(0, 1)}}))
if conditional({{choice(['three', 'four'])}}) == 'four':
model.add(Dense(100))
model.add(Dropout(0.5))
model.add(Activation('relu'))
model.add(Dense(10))
model.add(Activation('softmax'))
opt = Adam(lr={{choice([0.01, 0.001, 0.0001, 0.00001])}},
decay={{choice([1e-2, 1e-3, 1e-4])}})
model.compile(loss='categorical_crossentropy',
optimizer=opt,
metrics=['accuracy'])
globalvars.globalVar += 1
filepath = "../output/weights_fcn_hyperas" + str(
globalvars.globalVar) + ".hdf5"
checkpoint = ModelCheckpoint(filepath,
monitor='val_acc',
verbose=1,
save_best_only=True,
mode='max')
csv_logger = CSVLogger('../output/hyperas_test_log.csv',
append=True,
separator=';')
model.fit(X_train,
Y_train,
batch_size={{choice([64, 128])}},
nb_epoch=1,
verbose=2,
validation_data=(X_test, Y_test),
callbacks=[checkpoint, csv_logger])
score, acc = model.evaluate(X_test, Y_test, verbose=0)
print('Test accuracy:', acc)
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def create_lstm_model(x_train, y_train, x_test, y_test):
num_layer = conditional({{choice(['one', 'two'])}})
lstm_units = {{choice([16, 32, 64, 128, 256])}}
print('lstm', lstm_units)
if num_layer == 'two':
lstm2_units = {{choice([16, 32, 64, 128])}}
if lstm2_units > lstm_units:
lstm2_units = lstm_units
print('lstm2', lstm2_units)
dropout_rate = {{uniform(0, 1)}}
recurrent_dropout_rate = {{uniform(0, 1)}}
print('dropout', dropout_rate)
print('recurrent_dropout', recurrent_dropout_rate)
epochs = int({{uniform(1, 25)}})
batch_size = {{choice([256, 512, 1024])}}
optimizer = {{choice(['sgd', 'adam', 'rmsprop'])}}
print('batch size', batch_size, optimizer)
model = Sequential()
model.add(
LSTM(units=lstm_units,
input_shape=(50, 2),
dropout=dropout_rate,
recurrent_dropout=recurrent_dropout_rate,
return_sequences=(num_layer == 'two')))
if num_layer == 'two':
model.add(
LSTM(units=lstm2_units,
input_shape=(50, lstm_units),
dropout=dropout_rate,
recurrent_dropout=recurrent_dropout_rate,
return_sequences=False))
model.add(Dense(units=2))
model.compile(loss='mse', optimizer=optimizer, metrics=['mse'])
early_stopping_monitor = EarlyStopping(patience=5, verbose=0)
model.fit(x_train,
y_train,
epochs=epochs,
batch_size=batch_size,
validation_data=(x_test, y_test),
callbacks=[early_stopping_monitor],
verbose=2)
score, mse = model.evaluate(x_test, y_test, verbose=2)
print(score)
if np.isnan(score):
print('loss is nan')
score = 100.0
return {'loss': score, 'status': STATUS_OK, 'model': model}
def create_time_model(Xtrain, Ttrain, Xtest, Ttest):
def batch_generator(x, t):
i = 0
while True:
if i == len(x):
i = 0
else:
xtrain, ytrain = x[i], t[i]
i += 1
yield xtrain, ytrain
steps_per_epoch = len(Xtrain)
val_steps = len(Xtest)
model = Sequential()
csv_logger = CSVLogger('time_log.csv', append=True, separator='\t')
layer = conditional({{choice(['one', 'two'])}})
if layer == 'two':
returnseq = True
else:
returnseq = False
model.add(
LSTM(units={{choice([32, 64, 128, 256])}},
input_shape=(None, Xtrain[0].shape[2]),
kernel_regularizer=L2({{uniform(0, 1)}}),
dropout={{uniform(0, 1)}},
return_sequences=returnseq))
if layer == 'two':
model.add(
LSTM(units={{choice([256, 512])}},
input_shape=(None, Xtrain[0].shape[2]),
kernel_regularizer=L2({{uniform(0, 1)}}),
dropout={{uniform(0, 1)}}))
model.add(Dense({{choice([1024, 512])}}))
model.add(Activation('relu'))
model.add({{choice([Dropout(0.5), Activation('linear')])}})
model.add(Dense(Ttrain[0].shape[1]))
model.compile(loss='mean_squared_error',
optimizer={{choice(['rmsprop', 'adam', 'sgd'])}},
metrics=['cosine'])
model.summary()
history = model.fit_generator(batch_generator(Xtrain, Ttrain),
steps_per_epoch=len(Xtrain),
epochs=5,
callbacks=[csv_logger],
verbose=2,
validation_data=batch_generator(
Xtest, Ttest),
validation_steps=len(Xtest))
score, acc = model.evaluate_generator(batch_generator(Xtest, Ttest),
steps=len(Xtest))
return {'loss': acc, 'model': model, 'status': STATUS_OK}
def model(train_X, train_Y, test_X, test_Y):
'''
Model providing function:
Create Keras model with double curly brackets dropped-in as needed.
Return value has to be a valid python dictionary with two customary keys:
- loss: Specify a numeric evaluation metric to be minimized
- status: Just use STATUS_OK and see hyperopt documentation if not feasible
The last one is optional, though recommended, namely:
- model: specify the model just created so that we can later use it again.
'''
model = Sequential()
model.add(Dense(500,input_shape=(train_X.shape[1],)))
model.add(Activation('relu'))
model.add(BatchNormalization())
model.add(Dropout({{uniform(0, 1)}}))
model.add(Dense({{choice([512, 1024])}}))
model.add(Activation('relu'))
model.add(BatchNormalization())
model.add(Dropout({{uniform(0, 1)}}))
model.add(Dense({{choice([512, 1024])}}))
model.add(Activation('relu'))
model.add(BatchNormalization())
model.add(Dropout({{uniform(0, 1)}}))
# If we choose 'four', add an additional fourth layer
if conditional({{choice(['three', 'four'])}}) == 'four':
model.add(Dense(500))
# We can also choose between complete sets of layers
model.add({{choice([Dropout(0.5), Activation('linear')])}})
model.add(Activation('relu'))
model.add(Dense(train_Y.shape[1]))
model.add(Activation('softmax'))
model.compile(loss='categorical_crossentropy', metrics=['accuracy'],
optimizer={{choice(['rmsprop', 'adam', 'sgd'])}})
model.fit(train_X, train_Y,
batch_size={{choice([128, 256])}},
nb_epoch=1,
verbose=2,
validation_data=(test_X, test_Y))
score, acc = model.evaluate(test_X, test_Y, verbose=0)
print('Test accuracy:', acc)
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def model(X_train, Y_train, X_test, Y_test, MAX_VOCAB_SIZE, MAX_SEQ_LEN):
## DEFINE MODEL
embed_dim = 64
lstm_out = 32
model = Sequential()
model.add(Embedding(MAX_VOCAB_SIZE, embed_dim, input_length=MAX_SEQ_LEN))
if conditional({{choice(['gru', 'lstm'])}}) == 'gru':
model.add(CuDNNGRU({{choice([8, 32, 64])}}))
else:
model.add(CuDNNLSTM({{choice([8, 32, 64])}}))
if conditional({{choice(['one', 'two', 'three'])}}) == 'two':
model.add(Dense({{choice([5, 20, 50, 100])}}, activation="relu"))
elif conditional({{choice(['one', 'two', 'three'])}}) == 'three':
model.add(Dense({{choice([20, 50, 100])}}, activation="relu"))
model.add(Dropout({{uniform(0, 1)}}))
model.add(Dense({{choice([5, 20])}}, activation="relu"))
model.add(Dense(1, activation='sigmoid'))
## COMPILE
model.compile(loss='binary_crossentropy',
metrics=['accuracy'],
optimizer={{choice(['rmsprop', 'adam', 'sgd'])}})
result = model.fit(X_train,
Y_train,
batch_size={{choice([32, 64, 128])}},
epochs=5,
verbose=2,
validation_data=(X_test, Y_test))
validation_acc = np.amax(result.history['val_acc'])
print('Best validation acc of epoch:', validation_acc)
return {'loss': -validation_acc, 'status': STATUS_OK, 'model': model}
def model(X_train, Y_train, X_test, Y_test):
input_i = keras.layers.Input(shape=[1])
i = keras.layers.Embedding(1000 + 1, 64)(input_i)
i = keras.layers.Flatten()(i)
i = keras.layers.Dropout({{uniform(0, 1)}})(i)
input_u = keras.layers.Input(shape=[1])
u = keras.layers.Embedding(10000 + 1, 64)(input_u)
u = keras.layers.Flatten()(u)
u = keras.layers.Dropout({{uniform(0, 1)}})(u)
nn = keras.layers.merge([i, u], mode='concat')
nn = keras.layers.Dense({{choice([128, 256, 512, 1024])}})(nn)
nn = keras.layers.Activation({{choice(['relu', 'sigmoid'])}})(nn)
nn = keras.layers.Dropout({{uniform(0, 1)}})(nn)
nn = keras.layers.normalization.BatchNormalization()(nn)
nn = keras.layers.Dense({{choice([128, 256, 512, 1024])}})(nn)
nn = keras.layers.Activation({{choice(['relu', 'sigmoid'])}})(nn)
if conditional({{choice(['2', '3'])}}) == '3':
nn = keras.layers.Dropout({{uniform(0, 1)}})(nn)
nn = keras.layers.normalization.BatchNormalization()(nn)
nn = keras.layers.Dense({{choice([128, 256, 512, 1024])}})(nn)
nn = keras.layers.Activation({{choice(['relu', 'sigmoid'])}})(nn)
output = keras.layers.Dense(5, activation='softmax')(nn)
model = keras.models.Model([input_i, input_u], output)
model.compile(loss='categorical_crossentropy',
metrics=['accuracy'],
optimizer={{choice(['rmsprop', 'adam', 'sgd'])}})
model.fit(X_train,
Y_train,
batch_size={{choice([64, 128])}},
nb_epoch=1,
validation_data=(X_test, Y_test))
score, acc = model.evaluate(X_test, Y_test, verbose=0)
mse = metrics.mean_squared_error(
numpy.argmax(Y_test, 1) + 1,
numpy.argmax(model.predict(X_test), 1) + 1)
rmse = numpy.sqrt(mse)
print('Test accuracy:', rmse)
return {'loss': rmse, 'status': STATUS_OK, 'model': model}
def model(X_train, y_train, X_test, y_test):
# create model
model = Sequential()
model.add(Dense({{choice([54, 27, 13])}}, input_dim=54, init='normal', activation='linear'))
model.add(Dense({{choice([104, 54, 27, 13])}}, init='normal', activation='linear'))
if conditional({{choice(['three', 'four'])}}) == 'four':
model.add(Dense({{choice([27, 13, 7])}}, activation='linear'))
model.add(Dense(1, init='normal', activation='linear'))
# Compile model
model.compile(loss='mse', optimizer='rmsprop')
model.fit(X_train, y_train, nb_epoch=50, batch_size={{choice([64, 128, 256])}}, verbose=2)
acc = model.evaluate(X_test, y_test)
print('\nTest accuracy:', acc)
return {'loss': acc, 'status': STATUS_OK, 'model': model}
def model(X_train, y_train, X_test, y_test, max_features, maxlen):
model = Sequential()
model.add(LSTM({{choice([200, 400, 800, 1000])}},
input_shape = (1, max_features),
return_sequences = True))
if conditional({{choice(['two', 'three'])}}) == 'three':
model.add(LSTM({{choice([200, 400, 800, 1000])}},
return_sequences = True))
model.add(LSTM({{choice([200, 400, 800, 1000])}},
return_sequences = False))
else:
model.add(LSTM({{choice([200, 400, 800, 1000])}},
return_sequences = False))
# Avoid overfitting by dropping data
model.add(Dropout({{uniform(0, 1)}}))
# Regular dense nn with sigmoid activation function
model.add(Dense(y_train.shape[1], activation = 'softmax'))
## Compile model
model.compile(
loss='categorical_crossentropy'
, optimizer='rmsprop'
, metrics = ['accuracy'] # Collect accuracy metric
)
## Early stop
early_stopping = EarlyStopping(monitor='val_loss', patience=8)
## Fit model
model.fit(X_train, y_train,
batch_size={{choice([64, 128, 256])}},
nb_epoch=500,
validation_data=(X_test, y_test),
callbacks=[early_stopping])
## Extract score)
score, acc = model.evaluate(X_test, y_test, verbose=0)
print("Accuracy: ", acc)
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def create_model(x_train, y_train, x_test, y_test):
"""
Model providing function:
Create Keras model with double curly brackets dropped-in as needed.
Return value has to be a valid python dictionary with two customary keys:
- loss: Specify a numeric evaluation metric to be minimized
- status: Just use STATUS_OK and see hyperopt documentation if not feasible
The last one is optional, though recommended, namely:
- model: specify the model just created so that we can later use it again.
"""
model = Sequential()
model.add(Dense(512, input_shape=(784, )))
model.add(Activation('relu'))
model.add(Dropout({{uniform(0, 1)}}))
model.add(Dense({{choice([256, 512, 1024])}}))
model.add(Activation({{choice(['relu', 'sigmoid'])}}))
model.add(Dropout({{uniform(0, 1)}}))
# If we choose 'four', add an additional fourth layer
if conditional({{choice(['three', 'four'])}}) == 'four':
model.add(Dense(100))
# We can also choose between complete sets of layers
model.add({{choice([Dropout(0.5), Activation('linear')])}})
model.add(Activation('relu'))
model.add(Dense(10))
model.add(Activation('softmax'))
model.compile(loss='categorical_crossentropy',
metrics=['accuracy'],
optimizer={{choice(['rmsprop', 'adam', 'sgd'])}})
model.fit(x_train,
y_train,
batch_size={{choice([64, 128])}},
epochs=1,
verbose=2,
validation_data=(x_test, y_test))
score, acc = model.evaluate(x_test, y_test, verbose=0)
print('Test accuracy:', acc)
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def keras_fmin_fnct(space):
"""
Model providing function:
Create Keras model with double curly brackets dropped-in as needed.
Return value has to be a valid python dictionary with two customary keys:
- loss: Specify a numeric evaluation metric to be minimized
- status: Just use STATUS_OK and see hyperopt documentation if not feasible
The last one is optional, though recommended, namely:
- model: specify the model just created so that we can later use it again.
"""
model = Sequential()
model.add(Dense(512, input_shape=(784, )))
model.add(Activation('relu'))
model.add(Dropout(space['Dropout']))
model.add(Dense(space['Dense']))
model.add(Activation(space['Activation']))
model.add(Dropout(space['Dropout_1']))
# If we choose 'four', add an additional fourth layer
if conditional(space['conditional']) == 'four':
model.add(Dense(100))
# We can also choose between complete sets of layers
model.add(space['add'])
model.add(Activation('relu'))
model.add(Dense(10))
model.add(Activation('softmax'))
model.compile(loss='categorical_crossentropy',
metrics=['accuracy'],
optimizer=space['optimizer'])
model.fit(x_train,
y_train,
batch_size=space['batch_size'],
epochs=2,
verbose=2,
validation_data=(x_test, y_test))
score, acc = model.evaluate(x_test, y_test, verbose=0)
print('Test accuracy:', acc)
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def model(X_train, Y_train, X_test, Y_test):
'''
Model providing function:
Create Keras model with double curly brackets dropped-in as needed.
Return value has to be a valid python dictionary with two customary keys:
- loss: Specify a numeric evaluation metric to be minimized
- status: Just use STATUS_OK and see hyperopt documentation if not feasible
The last one is optional, though recommended, namely:
- model: specify the model just created so that we can later use it again.
'''
from keras.models import Sequential
from keras.layers.core import Dense, Dropout, Activation
model = Sequential()
model.add(Dense(512, input_shape=(784,)))
model.add(Activation('relu'))
model.add(Dropout({{uniform(0, 1)}}))
model.add(Dense({{choice([256, 512, 1024])}}))
model.add(Activation({{choice(['relu', 'sigmoid'])}}))
model.add(Dropout({{uniform(0, 1)}}))
# If we choose 'four', add an additional fourth layer
if conditional({{choice(['three', 'four'])}}) == 'four':
model.add(Dense(100))
model.add({{choice([Dropout(0.5), Activation('linear')])}})
model.add(Activation('relu'))
model.add(Dense(10))
model.add(Activation('softmax'))
model.compile(loss='categorical_crossentropy', optimizer={{choice(['rmsprop', 'adam', 'sgd'])}})
model.fit(X_train, Y_train,
batch_size={{choice([64, 128])}},
nb_epoch=1,
show_accuracy=True,
verbose=2,
validation_data=(X_test, Y_test))
score, acc = model.evaluate(X_test, Y_test, show_accuracy=True, verbose=0)
print('Test accuracy:', acc)
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def create_model(x_train, y_train, x_test, y_test):
model = Sequential()
model.add(
Dense({{choice([30, 45, 60])}},
input_dim=x_train.shape[1],
activation={{choice(['relu', 'elu'])}},
kernel_initializer='uniform'))
model.add(Dropout({{uniform(0, 1)}}))
model.add(
Dense({{choice([30, 45, 60])}},
activation={{choice(['relu', 'elu'])}},
kernel_initializer='uniform'))
model.add(Dropout({{uniform(0, 1)}}))
# If we choose 'four', add an additional fourth layer
if conditional({{choice(['three', 'four'])}}) == 'four':
model.add(
Dense({{choice([30, 45, 60])}},
input_dim=x_train.shape[1],
activation={{choice(['relu', 'elu'])}},
kernel_initializer='uniform'))
model.add(Dropout({{uniform(0, 1)}}))
model.add(Dense(25, activation='softmax', kernel_initializer='uniform'))
model.compile(loss='categorical_crossentropy',
metrics=['accuracy'],
optimizer={{choice(['rmsprop', 'adam', 'sgd'])}})
model.fit(x_train,
y_train,
batch_size={{choice([64, 128])}},
epochs=100,
verbose=0,
validation_data=(x_test, y_test))
score, acc = model.evaluate(x_test, y_test, verbose=0)
print('Test accuracy:', acc)
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def load_model(X_train, X_aux_train, y_train, X_test, X_aux_test, y_test):
lstm_input = Input(shape=(5, 11), name='lstm_input')
lstm_out = LSTM({{choice([3, 4, 7, 10])}}, activation='linear')(lstm_input)
auxiliary_input = Input(shape=(46, ), name='aux_input')
x = merge([lstm_out, auxiliary_input], mode='concat')
# we stack a deep fully-connected network on top
x = Dense({{choice([92, 46, 23, 12])}},
activation='linear',
W_regularizer=l2({{choice([0.01, 0.03])}}))(x)
if conditional({{choice(['three', 'four'])}}) == 'four':
x = Dense({{choice([46, 23, 12, 6])}},
activation='linear',
W_regularizer=l2({{choice([0.01, 0.03])}}))(x)
main_output = Dense(1, activation='linear', name='main_output')(x)
final_model = Model(input=[lstm_input, auxiliary_input],
output=[main_output])
final_model.compile(loss='mean_squared_error', optimizer='adam')
final_model.fit([X_train, X_aux_train],
y_train,
nb_epoch=30,
batch_size={{choice([64, 128])}},
verbose=2)
acc = final_model.evaluate([X_test, X_aux_test], y_test, verbose=1)
#---------------------------------------------------------------- print "\n"
#--------------------------------------------------------------- print score
#-------------------- y_test_est = final_model.predict([X_test, X_aux_test])
#------------ print("LSTM MSE; %f" % mean_squared_error(y_test, y_test_est))
#-------------------- print("LSTM score: %f" % r2_score(y_test, y_test_est))
print('\nTest accuracy:', acc)
return {'loss': acc, 'status': STATUS_OK, 'model': final_model}
def create_fix_model(Xtrain, Ttrain, Xtest, Ttest):
csv_logger = CSVLogger('fix_log.csv', append=True, separator='\t')
model = Sequential()
layer = conditional({{choice(['one', 'two'])}})
if layer == 'two':
returnseq = True
else:
returnseq = False
model.add(
LSTM(units={{choice([32, 64, 128, 256])}},
input_shape=(Xtrain.shape[1], Xtrain.shape[2]),
kernel_regularizer=L2({{uniform(0, 1)}}),
dropout={{uniform(0, 1)}},
return_sequences=returnseq))
if layer == 'two':
model.add(
LSTM(units={{choice([256, 512])}},
input_shape=(Xtrain.shape[1], Xtrain.shape[2]),
kernel_regularizer=L2({{uniform(0, 1)}}),
dropout={{uniform(0, 1)}}))
model.add(Dense({{choice([1024, 512])}}))
model.add(Activation('relu'))
model.add({{choice([Dropout(0.5), Activation('linear')])}})
model.add(Dense(Ttrain.shape[1]))
model.compile(loss='mean_squared_error',
optimizer={{choice(['rmsprop', 'adam', 'sgd'])}},
metrics=['cosine'])
model.summary()
model.fit(Xtrain,
Ttrain,
batch_size=50,
epochs=5,
callbacks=[csv_logger],
verbose=2,
validation_data=(Xtest, Ttest))
score, acc = model.evaluate(Xtest, Ttest, verbose=0)
return {'loss': acc, 'model': model, 'status': STATUS_OK}
def convnet(train_data, train_labels, test_data, test_labels):
'''
Convolutional Neural Network defined.
'''
SEED = 123
np.random.seed(SEED)
NB_CLASSES = 2
DOC_ROWS = 1
DOC_COLS = 300
INPUT_SHAPE = (1, DOC_ROWS, DOC_COLS)
model = Sequential()
model.add(Dropout({{uniform(0, 1)}}, input_shape=INPUT_SHAPE))
model.add(
Conv2D(
{{choice([5, 10, 15, 20, 50, 100])}},
kernel_size={{choice([5, 10, 20])}},
padding='same',
kernel_initializer={{choice(['TruncatedNormal',
'random_normal'])}}))
model.add(Activation({{choice(["tanh", "relu"])}}))
model.add(Dropout({{uniform(0, 1)}}))
if conditional({{choice(['yes', 'no'])}}) == 'yes':
model.add(MaxPooling2D(pool_size=(1, 1), strides=None))
model.add(
Conv2D(
{{choice([5, 10, 15, 20, 50, 100])}},
kernel_size={{choice([5, 10, 20])}},
padding='same',
kernel_initializer={{choice(['TruncatedNormal',
'random_normal'])}}))
model.add(Activation({{choice(["tanh", "relu"])}}))
model.add(Dropout({{uniform(0, 1)}}))
if conditional({{choice(['yes', 'no'])}}) == 'yes':
model.add(MaxPooling2D(pool_size=(1, 1), strides=None))
if conditional({{choice(['yes', 'no'])}}) == 'yes':
model.add(
Conv2D({{choice([5, 10, 15, 20, 50, 100])}},
kernel_size={{choice([5, 10, 20])}},
padding='same',
kernel_initializer={{
choice(['TruncatedNormal', 'random_normal'])
}}))
model.add(Activation({{choice(["tanh", "relu"])}}))
model.add(Dropout({{uniform(0, 1)}}))
if conditional({{choice(['yes', 'no'])}}) == 'yes':
model.add(
Conv2D({{choice([5, 10, 15, 20, 50, 100])}},
kernel_size={{choice([5, 10, 20])}},
padding='same',
kernel_initializer={{
choice(['TruncatedNormal', 'random_normal'])
}}))
model.add(Activation({{choice(["tanh", "relu"])}}))
model.add(Dropout({{uniform(0, 1)}}))
model.add(Flatten())
model.add(Dense({{choice([250, 500])}}))
model.add(Activation({{choice(["tanh", "relu"])}}))
model.add(Dropout({{uniform(0, 1)}}))
if conditional({{choice(['yes', 'no'])}}) == 'yes':
model.add(Dense({{choice([250, 500, 750])}}))
model.add(Activation({{choice(["tanh", "relu"])}}))
model.add(Dropout({{uniform(0, 1)}}))
model.add(Dense(NB_CLASSES))
model.add(Activation({{choice(["softmax", "sigmoid", "hard_sigmoid"])}}))
model.compile(
loss={{choice(['categorical_crossentropy', 'binary_crossentropy'])}},
metrics=['accuracy'],
optimizer={{choice(['rmsprop', 'adam', 'sgd', 'nadam', 'adamax'])}})
history = model.fit(train_data,
train_labels,
batch_size={{choice([32, 64, 128, 256, 512])}},
epochs={{choice([10, 20, 50, 100])}},
verbose=1,
validation_split={{uniform(0, 1)}},
callbacks=[
TensorBoard(
log_dir=os.path.join('LOGS/dcnn_d2v300_BM'),
histogram_freq=0,
write_graph=True,
write_grads=False,
write_images=False,
embeddings_freq=0,
embeddings_layer_names=None,
embeddings_metadata=None)
])
score, acc = model.evaluate(test_data, test_labels, verbose=1)
print('History')
print(history.history.keys())
print('Test Score: {}'.format(score))
print('Test Accuracy: {}'.format(acc))
out = {'loss': -acc, 'status': STATUS_OK, 'model': model}
return out
def justdeep(x_train, y_train, x_test, y_test):
include_top = True
input_tensor = None
input_shape = (128, 128, 3)
pooling = None
classes = y_test.shape[-1]
relu = 'elu'
input_shape = _obtain_input_shape(
input_shape,
default_size=227,
min_size=48,
data_format=K.image_data_format(),
require_flatten=include_top)
if input_tensor is None:
img_input = Input(shape=input_shape)
else:
if not K.is_keras_tensor(input_tensor):
img_input = Input(tensor=input_tensor, shape=input_shape)
else:
img_input = input_tensor
x = Convolution2D(
{{choice([16, 32, 64])}},
{{choice([(3, 3), (5, 5)])}},
strides=(2, 2),
padding='valid',
activation=relu,
)(img_input)
x = MaxPooling2D(pool_size=(3, 3), strides=(2, 2))(x)
nth = 1
#n_layer = conditional({{choice([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])}})
n_layer = conditional({{choice([1, 2, 3, 4, 5, 6])}})
for _ in range(n_layer):
squeeze = nth * {{choice([8, 16])}}
expand = squeeze * {{choice([3, 4])}}
x = fire_module(x, squeeze=squeeze, expand=expand)
x = fire_module(x, squeeze=squeeze, expand=expand)
#x = Dropout({{uniform(0, 1)}})(x)
nth += 1
# It's not obvious where to cut the network...
# Could do the 8th or 9th layer... some work recommends cutting earlier layers.
x = Dropout({{uniform(0, 1)}})(x)
x = Convolution2D(
classes,
(1, 1),
padding='valid',
activation=relu,
)(x)
x = GlobalAveragePooling2D()(x)
x = Activation('softmax')(x)
# Ensure that the model takes into account
# any potential predecessors of .
if input_tensor is not None:
inputs = get_source_inputs(input_tensor)
else:
inputs = img_input
model = Model(inputs, x, name='squeezenet')
model.compile(
loss='categorical_crossentropy',
optimizer=keras.optimizers.rmsprop(lr=0.0001, decay=1e-6),
metrics=['accuracy'])
model.fit(
x_train, y_train, batch_size=64, epochs=100, verbose=2, validation_data=(x_test, y_test))
score, acc = model.evaluate(x_test, y_test, verbose=0)
print('Test accuracy:', acc)
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def mydeep(x_train, y_train, x_test, y_test):
from keras.applications.imagenet_utils import _obtain_input_shape
from keras import backend as K
from keras.layers import Input, Convolution2D, MaxPooling2D, Activation, concatenate, Dropout, warnings
from keras.layers import GlobalAveragePooling2D, GlobalMaxPooling2D
from keras.models import Model
from keras.engine.topology import get_source_inputs
from keras.utils import get_file
from keras.utils import layer_utils
def fire_module(x, squeeze=16, expand=64):
if K.image_data_format() == 'channels_first':
channel_axis = 1
else:
channel_axis = 3
with tf.variable_scope('fire_module'):
x = Convolution2D(squeeze, (1, 1), padding='valid')(x)
x = Activation('elu')(x)
left = Convolution2D(expand, (1, 1), padding='valid')(x)
left = Activation('elu')(left)
right = Convolution2D(expand, (3, 3), padding='same')(x)
right = Activation('elu')(right)
x = concatenate([left, right], axis=channel_axis)
return x
include_top = True
input_tensor = None
input_shape = (128, 128, 3)
pooling = None
classes = y_test.shape[-1]
input_shape = _obtain_input_shape(
input_shape,
default_size=227,
min_size=48,
data_format=K.image_data_format(),
require_flatten=include_top)
if input_tensor is None:
img_input = Input(shape=input_shape)
else:
if not K.is_keras_tensor(input_tensor):
img_input = Input(tensor=input_tensor, shape=input_shape)
else:
img_input = input_tensor
x = Convolution2D(
{{choice([16, 32, 64])}},
{{choice([(3, 3), (5, 5), (7, 7), (9, 9), (11, 11)])}},
strides=(2, 2),
padding='valid',
activation='elu',
)(img_input)
x = MaxPooling2D(pool_size=(3, 3), strides=(2, 2))(x)
nth = 1
n_layer = conditional({{choice([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])}})
for _ in range(n_layer):
squeeze = nth * {{choice([8, 16])}}
expand = squeeze * {{choice([3, 4])}}
x = fire_module(x, squeeze=squeeze, expand=expand)
x = fire_module(x, squeeze=squeeze, expand=expand)
nth += 1
# It's not obvious where to cut the network...
# Could do the 8th or 9th layer... some work recommends cutting earlier layers.
x = Dropout({{uniform(0, 1)}})(x)
x = Convolution2D(
classes,
(1, 1),
padding='valid',
activation='elu',
)(x)
x = GlobalAveragePooling2D()(x)
x = Activation('softmax')(x)
# Ensure that the model takes into account
# any potential predecessors of .
if input_tensor is not None:
inputs = get_source_inputs(input_tensor)
else:
inputs = img_input
model = Model(inputs, x, name='squeezenet')
model.compile(
loss='categorical_crossentropy',
optimizer=keras.optimizers.rmsprop(lr=0.0001, decay=1e-6),
metrics=['accuracy'])
model.fit(
x_train,
y_train,
batch_size={{choice([32, 64, 128])}},
epochs=100,
verbose=2,
validation_data=(x_test, y_test))
score, acc = model.evaluate(x_test, y_test, verbose=0)
print('Test accuracy:', acc)
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def createModel(features_train, embeddings_matrix, idxs):
char_emb_size = 25
char_lstm_size = 25
lstm_units = {{choice([200, 50, 100])}}
if embeddings_matrix is None:
emb_layer = Embedding(input_dim=len(word_idx) + 1,
output_dim=300,
mask_zero=True,
trainable=False,
name="word_emb")
else:
emb_layer = Embedding(input_dim=embeddings_matrix.shape[0],
output_dim=embeddings_matrix.shape[1],
mask_zero=True,
weights=[embeddings_matrix],
name="word_emb",
trainable=False)
word_ids = Input(batch_shape=(None, None), dtype='int32')
word_embeddings = emb_layer(word_ids)
# #Char embeddings
char_ids = Input(batch_shape=(None, None, None), dtype='int32')
# char_ids = attention_3d_block(char_ids)
char_embeddings = Embedding(input_dim=len(idxs["char_idx"]) + 1,
output_dim=char_emb_size,
mask_zero=True,
input_length=20,
name="char_emb")(char_ids)
s = K.shape(char_embeddings)
if conditional({{choice(['true', 'false'])}}) == 'true':
# #####Attentionlayer on characters
char_embeddings = Lambda(
lambda x: K.reshape(x, shape=(-1, 20, char_emb_size)),
name="lambda")(char_embeddings)
fwd_state = LSTM(
char_lstm_size,
return_sequences=True,
name="char_for",
)(char_embeddings)
bwd_state = LSTM(char_lstm_size,
return_sequences=True,
go_backwards=True,
name="char_back")(char_embeddings)
char_embeddings = Concatenate(
axis=-1, name="char_concat")([fwd_state, bwd_state])
char_embeddings = attention_3d_block(char_embeddings, 20,
"char_att")
char_embeddings = Lambda(
lambda x: K.reshape(x, shape=[-1, s[1], char_lstm_size * 2]),
name="lambda2")([char_embeddings])
else:
#No Attention Layer
char_embeddings = Lambda(
lambda x: K.reshape(x, shape=(-1, s[-2], char_emb_size)),
name="lambda")(char_embeddings)
fwd_state = LSTM(
char_lstm_size,
return_state=True,
name="char_for",
)(char_embeddings)[-2]
bwd_state = LSTM(char_lstm_size,
return_state=True,
go_backwards=True,
name="char_back")(char_embeddings)[-2]
#Charembeddings concatinate forward and backword
char_embeddings = Concatenate(
axis=-1, name="char_concat")([fwd_state, bwd_state])
char_embeddings = Lambda(
lambda x: K.reshape(x, shape=[-1, s[1], 2 * char_lstm_size]),
name="lambda2")(char_embeddings)
embeddings = [word_embeddings, char_embeddings]
additional_features = []
additional_features_length = 0
for j in features_train:
if j != "words" and j != "output" and j != "char_input" and j != "wordembeddings_input":
additional_features_length = additional_features_length + len(
idxs[j])
additional_features.append(
Input(batch_shape=(None, None, len(idxs[j])),
dtype='float32'))
if conditional({{choice(['true', 'false'])}}) == 'true':
additional_features_concat = Concatenate(
axis=-1, name="concat_additional_feats")(additional_features)
print additional_features_concat.shape
attention_probs = Dense(
additional_features_length,
activation='softmax',
name='attention_vec_')(additional_features_concat)
attention_mul = Multiply()(
[additional_features_concat, attention_probs])
print word_embeddings.shape, char_embeddings.shape
embeddings.append(attention_mul)
merge_input = Concatenate(axis=-1, name="concat_all")(embeddings)
else:
merge_input = Concatenate(
axis=-1, name="concat_all")(embeddings + additional_features)
merge_input = Dropout({{uniform(0, 1)}})(merge_input)
merge_lstm1 = Bidirectional(LSTM(lstm_units,
return_sequences=True,
name="lstm1"),
name="bilstm")(merge_input)
merge_lstm1 = Dropout({{uniform(0, 1)}})(merge_lstm1)
# merge_lstm1 = Dense(100, activation="tanh")(merge_lstm1)
merge_lstm1 = Dense(len(idxs["output_idx"]))(merge_lstm1)
crf = CRF(len(idxs["output_idx"]))
pred = crf(merge_lstm1)
lossFct = crf.loss_function
model = Model(inputs=[word_ids, char_ids] + additional_features,
outputs=[pred])
model.compile(loss=lossFct,
optimizer=Adam(lr=0.001),
metrics=[crf.accuracy])
return model
def model(x_train, y_train, x_test, y_test):
"""
Model providing function:
Create Keras model with double curly brackets dropped-in as needed.
Return value has to be a valid python dictionary with two customary keys:
- loss: Specify a numeric evaluation metric to be minimized
- status: Just use STATUS_OK and see hyperopt documentation if not feasible
The last one is optional, though recommended, namely:
- model: specify the model just created so that we can later use it again.
"""
ENV_NAME = 'CartPole-v0'
# Get the environment and extract the number of actions.
env = gym.make(ENV_NAME)
np.random.seed(123)
env.seed(123)
nb_actions = env.action_space.n
model = Sequential()
#model.add(Flatten(input_shape=(1,) + env.observation_space.shape))
model.add(
LSTM({{choice([16, 32, 48, 64])}},
input_shape=(1, ) + env.observation_space.shape))
model.add(Dropout({{uniform(0, 1)}})) # if shit commment this out
model.add(Activation('tanh'))
model.add(Dense({{choice([16, 32, 48, 64])}}))
model.add(Dropout({{uniform(0, 1)}})) # if shit comment this out
model.add(Activation({{choice(['relu', 'sigmoid'])}}))
# comment this out
if conditional({{choice(['three', 'four'])}}) == 'four':
model.add(Dense({{choice([16, 32, 48, 64])}}))
model.add({{choice([Dropout(0.5), Activation('linear')])}})
model.add(Activation({{choice(['relu', 'sigmoid'])}}))
if conditional({{choice(['four', 'five'])}}) == 'five':
model.add(Dense({{choice([16, 32, 48, 64])}}))
model.add({{choice([Dropout(0.5), Activation('linear')])}})
model.add(Activation({{choice(['relu', 'sigmoid'])}}))
model.add(Dense(nb_actions))
model.add(Activation({{choice(['relu', 'sigmoid', 'linear'])}}))
#print(model.summary())
# Finally, we configure and compile our agent. You can use every built-in Keras optimizer and
# even the metrics!
memory = SequentialMemory(limit=50000, window_length=1)
policy = BoltzmannQPolicy()
dqn = DQNAgent(model=model,
nb_actions=nb_actions,
memory=memory,
nb_steps_warmup=10,
target_model_update=1e-2,
policy=policy)
dqn.compile(Adam(lr={{uniform(1e-4, 1e-2)}}), metrics=['mae'])
# Okay, now it's time to learn something! We visualize the training here for show, but this
# slows down training quite a lot. You can always safely abort the training prematurely using
# Ctrl + C.
number_tasks = 1000 #0 # number of steps change me please
dqn.fit(env, nb_steps=number_tasks, visualize=False, verbose=2)
hist = dqn.test(env, nb_episodes=5, visualize=True)
rewards = hist.history['episode_reward']
loss = 1.0 / len(rewards) * np.sum([(90.0 - reward)**2
for reward in rewards])
print('Test Loss:', loss)
return {'loss': -loss, 'status': STATUS_OK, 'model': dqn}
def make_model(x_train, y_train, x_val, y_val):
weights_dir = 'weights'
history_dir = 'history'
numgrulayers = {{choice(['three'])}}
numgrulayers = conditional(numgrulayers)
model = Sequential()
model.add(GRU(units={{choice([32,64,128,256,512])}}, activation='tanh', input_shape=(x_train.shape[1],x_train.shape[2]), return_sequences=True ))
model.add(GRU(units={{choice([32,64,128,256,512])}}, activation='tanh', return_sequences=True ))
if numgrulayers == 'five':
model.add(GRU(units={{choice([32,64,128,256,512])}}, activation='tanh', return_sequences=True ))
model.add(GRU(units={{choice([32,64,128,256,512])}}, activation='tanh', return_sequences=True ))
elif numgrulayers == 'six':
model.add(GRU(units={{choice([32,64,128,256,512])}}, activation='tanh', return_sequences=True ))
model.add(GRU(units={{choice([32,64,128,256,512])}}, activation='tanh', return_sequences=True ))
model.add(GRU(units={{choice([32,64,128,256,512])}}, activation='tanh', return_sequences=True ))
model.add(GRU(units={{choice([32,64,128,256,512])}}, activation='tanh', return_sequences=False ))
model.add(Dense(y_train.shape[1], activation='softmax'))
model.compile(loss='categorical_crossentropy', optimizer='rmsprop', metrics=['accuracy'])
if numgrulayers == 'three':
filename = weights_dir+'/' + \
numgrulayers + '_' + \
str(space['units']) + '_' + \
str(space['units_1']) + '_' + \
str(space['units_7']) + '_' + \
str(space['batch_size']) + \
'_{epoch:03d}_{loss:.4f}_{acc:.4f}_{val_loss:.4f}_{val_acc:.4f}.hdf5'
elif numgrulayers == 'five':
filename = weights_dir+'/' + \
numgrulayers + '_' + \
str(space['units']) + '_' + \
str(space['units_1']) + '_' + \
str(space['units_2']) + '_' + \
str(space['units_3']) + '_' + \
str(space['units_7']) + '_' + \
str(space['batch_size']) + \
'_{epoch:03d}_{loss:.4f}_{acc:.4f}_{val_loss:.4f}_{val_acc:.4f}.hdf5'
elif numgrulayers == 'six':
filename = weights_dir+'/' + \
numgrulayers + '_' + \
str(space['units']) + '_' + \
str(space['units_1']) + '_' + \
str(space['units_4']) + '_' + \
str(space['units_5']) + '_' + \
str(space['units_6']) + '_' + \
str(space['units_7']) + '_' + \
str(space['batch_size']) + \
'_{epoch:03d}_{loss:.4f}_{acc:.4f}_{val_loss:.4f}_{val_acc:.4f}.hdf5'
checkpoint = ModelCheckpoint(filename, monitor='loss', verbose=1, save_best_only=True, mode='min')
earlystopping = EarlyStopping(monitor='val_loss', min_delta=0, patience=3, verbose=0, mode='auto')
callbacks = [checkpoint,earlystopping]
result = model.fit(x_train, y_train, batch_size={{choice([32,64,128])}}, epochs=20,verbose=6, validation_data=(x_val, y_val), callbacks=callbacks)
parameters = space
parameters['history'] = result.history
if numgrulayers == 'three':
dm.save(parameters, history_dir + '/' + \
numgrulayers + '_' + \
str(space['units']) + '_' + \
str(space['units_1']) + '_' + \
str(space['units_7']) + '_' + \
str(space['batch_size']))
elif numgrulayers == 'five':
dm.save(parameters, history_dir + '/' + \
numgrulayers + '_' + \
str(space['units']) + '_' + \
str(space['units_1']) + '_' + \
str(space['units_2']) + '_' + \
str(space['units_3']) + '_' + \
str(space['units_7']) + '_' + \
str(space['batch_size']))
elif numgrulayers == 'six':
dm.save(parameters, history_dir + '/' + \
numgrulayers + '_' + \
str(space['units']) + '_' + \
str(space['units_1']) + '_' + \
str(space['units_4']) + '_' + \
str(space['units_5']) + '_' + \
str(space['units_6']) + '_' + \
str(space['units_7']) + '_' + \
str(space['batch_size']))
loss,acc = model.evaluate(x_val,y_val, verbose=0)
print("Test loss: "+str(loss)+"\tTest acc: " +str(acc))
return {'status': STATUS_OK, 'model':model, 'loss':loss, 'acc':acc }
def model(x_train, x_test, Y_train, Y_test):
crop_length = 160
x_train_ = x_train[:, :crop_length]
x_test_ = x_test[:, :crop_length]
x_concat = np.concatenate([x_train_, x_test_])
x_concat = (x_concat - x_concat.min()) / (x_concat.max() -
x_concat.min()) * 2 - 1.
x_train_ = x_concat[:x_train_.shape[0]]
x_test_ = x_concat[x_train_.shape[0]:]
x_train_ = x_train_.reshape(x_train_.shape + (1, ))
x_test_ = x_test_.reshape(x_test_.shape + (1, ))
x_concat = np.concatenate([x_train_, x_test_], axis=0)
epochs = 3
batch_size = 128
depth = {{choice([16])}}
n_layers = {{choice(["1 layer", "2 layers"])}}
if (conditional(n_layers) == "2 layers"):
squeeze = {{choice([1, 2])}}
layer_after_conv = {{choice(["batch_norm", "max_pool"])}}
if (conditional(layer_after_conv) == "batch_norm"):
activation = "relu" # "Batchnorm + relu","maxPooling"
pooling = 1
elif (conditional(layer_after_conv) == "max_pool"):
activation = {{choice(["relu", "elu",
None])}} # "Batchnorm + relu","maxPooling"
pooling = {{choice([2, 4])}}
kernel_size = 8
intermediate_dim = {{choice([32])}}
undersample_rate = pooling**(2 if
(conditional(n_layers) == "2 layers") else 1)
output_shape = (batch_size, crop_length // undersample_rate, 1) # //4 //4
# use_biais = True / False
# elu / selu / relu
# dilation_rate -> but stride = 1
x = Input(shape=x_train_.shape[1:])
h = x
h = Conv1D(depth, kernel_size,
padding='same')(h) # name="test" # NO ! We duplicate
if (conditional(layer_after_conv) == "max_pool"):
h = MaxPooling1D(pooling, padding='same')(h)
else:
h = BatchNormalization()(h)
h = Activation(activation)(h)
if (conditional(n_layers) == "2 layers"):
h = Conv1D(depth * squeeze,
kernel_size // squeeze,
padding='same',
activation=activation)(h)
if (conditional(layer_after_conv) == "max_pool"):
h = MaxPooling1D(pooling, padding='same')(h)
else:
h = BatchNormalization()(h)
h = Activation(activation)(h)
flat = Flatten()(h)
hidden = Dense(intermediate_dim, activation=activation)(flat)
x_recons = hidden
x_recons = Dense(output_shape[1])(x_recons)
x_recons = Reshape(output_shape[1:])(x_recons)
if (conditional(n_layers) == "2 layers"):
x_recons = Conv1D(depth * squeeze,
kernel_size // squeeze,
padding='same',
activation=activation)(x_recons)
if (conditional(layer_after_conv) == "max_pool"):
x_recons = UpSampling1D(pooling)(x_recons)
x_recons = Conv1D(depth,
kernel_size,
padding='same',
activation=activation)(x_recons)
if (conditional(layer_after_conv) == "max_pool"):
x_recons = UpSampling1D(pooling)(x_recons)
x_recons = Conv1D(1, kernel_size, padding='same')(x_recons)
y = Dropout(0.2)(hidden)
y = Dense(Y_train.shape[1], activation='softmax')(y)
mlt = Model(x, [x_recons, y])
mlt.compile('adam', ['mse', 'categorical_crossentropy'], metrics=['acc'])
hist = mlt.fit(
x_concat, [x_concat, np.concatenate([Y_train, Y_test])],
sample_weight=[
np.ones(len(x_concat)),
np.concatenate([np.ones(len(Y_train)),
np.zeros(len(Y_test))])
],
shuffle=True,
epochs=epochs,
batch_size=batch_size,
verbose=0)
acc = (np.argmax(mlt.predict(x_test_)[1],
axis=1) == np.argmax(Y_test, axis=-1)).mean()
print("ACC :", acc)
return {'loss': -acc, 'status': STATUS_OK} # we could add the history...
def model(X_train, Y_train, X_test, Y_test):
'''
Model providing function:
Create Keras model with double curly brackets dropped-in as needed.
Return value has to be a valid python dictionary with two customary keys:
- loss: Specify a numeric evaluation metric to be minimized
- status: Just use STATUS_OK and see hyperopt documentation if not feasible
The last one is optional, though recommended, namely:
- model: specify the model just created so that we can later use it again.
'''
model = Sequential()
model.add(Dropout({{uniform(0, 1)}}, input_shape=X_train.shape[1:], name="drop_input"))
model.add(Dense({{choice([256, 512, 1024])}}, activation={{choice(['relu', 'tanh'])}}, name="fc1"))
model.add(Dropout({{uniform(0, 1)}}, name="drop_fc1"))
model.add(Dense({{choice([256, 512, 1024])}}, activation={{choice(['relu', 'tanh'])}}, name="fc2"))
model.add(Dropout({{uniform(0, 1)}}, name="drop_fc2"))
if conditional({{choice(['two', 'three'])}}) == 'three':
model.add(Dense({{choice([256, 512, 1024])}}, activation={{choice(['relu', 'tanh'])}}, name="fc3"))
model.add(Dropout({{uniform(0, 1)}}, name="drop_fc3"))
model.add(Dense(Y_test.shape[1], activation='linear',name='out_linear'))
model.summary()
choiceval = {{choice(['adam','rmsprop','sgd'])}}
if choiceval == 'adam':
adam = Adam(lr={{choice([10**-6, 10**-5, 10**-4, 10**-3, 10**-2, 10**-1])}},
decay={{choice([1e-2,1e-3,1e-4])}})
optim = adam
elif choiceval == 'rmsprop':
rmsprop = RMSprop(lr={{choice([10**-6, 10**-5, 10**-4, 10**-3, 10**-2, 10**-1])}},
decay={{choice([1e-2,1e-3,1e-4])}})
optim = rmsprop
else:
sgd = SGD(lr={{choice([10**-6, 10**-5, 10**-4, 10**-3, 10**-2, 10**-1])}},
decay={{choice([1e-2,1e-3,1e-4])}})
optim = sgd
model.compile(loss='categorical_crossentropy',
optimizer=optim,
metrics=['accuracy'])
globalvars.globalVar += 1
filepath = "D:/ORACLES_NN/py_outputs/weights_rsp_nn_hyperas" + var_in + str(globalvars.globalVar) + ".hdf5"
checkpoint = ModelCheckpoint(filepath, monitor='val_acc', verbose=1, save_best_only=True, mode='max')
csv_logger = CSVLogger('D:/ORACLES_NN/py_outputs/hyperas_rsp_nn_log_' + var_in + '.csv',
append=True, separator=';')
tensor_board_logfile = 'D:/ORACLES_NN/py_logs/' + var_in + str(globalvars.globalVar)
tensor_board = TensorBoard(log_dir=tensor_board_logfile, histogram_freq=0, write_graph=True)
if 'results' not in globals():
global results
results = []
history = model.fit(X_train, Y_train,
batch_size={{choice([64, 128, 256])}},
nb_epoch=3,
verbose=2,
validation_data=(X_test, Y_test),
callbacks=[checkpoint,csv_logger,tensor_board])
print(history.history.keys())
h1 = history.history
acc_ = numpy.asarray(h1['acc'])
loss_ = numpy.asarray(h1['loss'])
val_loss_ = numpy.asarray(h1['val_loss'])
val_acc_ = numpy.asarray(h1['val_acc'])
parameters = space
opt = numpy.asarray(parameters["choiceval"])
if choiceval == 'adam':
lr = numpy.asarray(parameters["lr"])
decay = numpy.asarray(parameters["decay"])
elif choiceval == 'rmsprop':
lr = numpy.asarray(parameters["lr_1"])
decay = numpy.asarray(parameters["decay_1"])
elif choiceval == 'sgd':
lr = numpy.asarray(parameters["lr_2"])
decay = numpy.asarray(parameters["decay_2"])
results.append(parameters)
acc_plot = 'D:/ORACLES_NN/py_plots/accuracy_run_' + var_in + str(globalvars.globalVar) + ".png"
plt.plot(history.history['acc'])
plt.plot(history.history['val_acc'])
plt.title('run: ' + var_in + str(globalvars.globalVar) + " opt: " + str(opt) + " lr: " + str(lr) + " decay: " + str(decay))
plt.ylabel('accuracy')
plt.xlabel('epoch')
plt.legend(['train', 'test'], loc='upper left')
plt.savefig(acc_plot)
plt.close()
los_plot = 'D:/ORACLES_NN/py_plots/losses_run_' + var_in + str(globalvars.globalVar) + ".png"
plt.plot(history.history['loss'])
plt.plot(history.history['val_loss'])
plt.title('run: ' + var_in + str(globalvars.globalVar) + " opt: " + str(opt) + " lr: " + str(lr) + " decay: " + str(decay))
plt.ylabel('loss')
plt.xlabel('epoch')
plt.legend(['train', 'test'], loc='upper left')
plt.savefig(los_plot)
plt.close()
acc_and_loss = numpy.column_stack((acc_, loss_, val_acc_, val_loss_))
save_file_mlp = 'D:/ORACLES_NN/py_outputs/rsp_nn_run_' + var_in + '_' + str(globalvars.globalVar) + '.txt'
with open(save_file_mlp, 'w') as f:
numpy.savetxt(save_file_mlp, acc_and_loss, delimiter=",")
score, acc = model.evaluate(X_test, Y_test, verbose=0)
print("parameters for run " + var_in + str(globalvars.globalVar) + ":")
print("-------------------------------")
print(parameters)
print("opt: ", opt)
print("lr: ", lr)
print("decay: ", decay)
print('Test accuracy:', acc)
save_file_params = 'D:/ORACLES_NN/py_outputs/params_run_' + var_in + '_' + str(globalvars.globalVar) + '.txt'
rownames = numpy.array(['Input', 'Run', 'optimizer', 'learning_rate', 'decay', 'train_accuracy','train_loss','val_accuracy', 'val_loss', 'test_accuracy'])
rowvals = (var_in, str(globalvars.globalVar), opt, lr, decay, acc_[-1], loss_[-1], val_acc_[-1], val_loss_[-1],acc)
DAT = numpy.column_stack((rownames, rowvals))
numpy.savetxt(save_file_params, DAT, delimiter=",",fmt="%s")
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def test_conditional():
data = 'foo'
assert data == conditional(data)
def create_model(trainx_windows, testx_windows, trainy, testy):
"""
Used by Hyperas to create and test a unique model by chosing a value at
each location wwith double-bracketed ranges of values.
Parameters:
-------------
trainx_windows: triaxial windowed training data, returned by get_data()
testx_windows: triaxial windowed testing data, returned by get_data()
trainy: one-hot labels for training the model, returned by get_data()
testy: one-hot labels for evaluating models' predictions, returned
by get_data()
Returns:
-------------
loss: (negative) accuracy of models' predictions
status: parameter used by Hyperas
model: baseline LSTM model with unique hyperparameter selections
"""
lstm_input = LSTM(input_shape=(128,3), units={{choice(np.arange(2,512))}},\
activation={{choice(['softmax', 'tanh', 'sigmoid', 'relu', 'linear'])}},\
recurrent_activation={{choice(['softmax', 'tanh', 'sigmoid', 'relu', 'linear'])}},\
use_bias={{choice([True, False])}},\
kernel_initializer={{choice(['zeros', 'ones', RandomNormal(), RandomUniform(minval=-1, maxval=1, seed=None), Constant(value=0.1), 'orthogonal', 'lecun_normal', 'glorot_uniform'])}},\
recurrent_initializer={{choice(['zeros', 'ones', RandomNormal(), RandomUniform(minval=-1, maxval=1, seed=None), Constant(value=0.1), 'orthogonal', 'lecun_normal', 'glorot_uniform'])}},\
unit_forget_bias=True,\
kernel_regularizer={{choice([None,'l2', 'l1'])}},\
recurrent_regularizer={{choice([None,'l2', 'l1'])}},\
bias_regularizer={{choice([None,'l2', 'l1'])}},\
activity_regularizer={{choice([None,'l2', 'l1'])}},\
kernel_constraint=None, recurrent_constraint=None,\
bias_constraint=None, dropout={{uniform(0, 1)}},\
recurrent_dropout={{uniform(0, 1)}},\
return_sequences=True, return_state=False,\
go_backwards=False, stateful=False, unroll=False)
lstm_last = LSTM(units={{choice(np.arange(2,512))}},\
activation={{choice(['softmax', 'tanh', 'sigmoid', 'relu', 'linear'])}},\
recurrent_activation={{choice(['softmax', 'tanh', 'sigmoid', 'relu', 'linear'])}},\
use_bias={{choice([True, False])}},\
kernel_initializer={{choice(['zeros', 'ones', RandomNormal(), RandomUniform(minval=-1, maxval=1, seed=None), Constant(value=0.1), 'orthogonal', 'lecun_normal', 'glorot_uniform'])}},\
recurrent_initializer={{choice(['zeros', 'ones', RandomNormal(), RandomUniform(minval=-1, maxval=1, seed=None), Constant(value=0.1), 'orthogonal', 'lecun_normal', 'glorot_uniform'])}},\
unit_forget_bias=True,\
kernel_regularizer={{choice([None,'l2', 'l1'])}},\
recurrent_regularizer={{choice([None,'l2', 'l1'])}},\
bias_regularizer={{choice([None,'l2', 'l1'])}},\
activity_regularizer={{choice([None,'l2', 'l1'])}},\
kernel_constraint=None, recurrent_constraint=None,\
bias_constraint=None, dropout={{uniform(0, 1)}},\
recurrent_dropout={{uniform(0, 1)}},\
return_sequences=False, return_state=False,\
go_backwards=False, stateful=False, unroll=False)
model = Sequential()
model.add(lstm_input)
if conditional({{choice([0,1])}}) == 1: model.add(BatchNormalization())
model.add(lstm_last)
if conditional({{choice([0,1])}}) == 1: model.add(BatchNormalization())
model.add(Dense(6))
model.add(Activation('softmax'))
adam_lr = keras.optimizers.Adam(lr={{choice([10**-6, 10**-5, 10**-4, 10**-3, 10**-2, 10**-1])}}, clipnorm=1.)
rmsprop_lr = keras.optimizers.RMSprop(lr={{choice([10**-6, 10**-5, 10**-4, 10**-3, 10**-2, 10**-1])}}, clipnorm=1.)
sgd_lr = keras.optimizers.SGD(lr={{choice([10**-6, 10**-5, 10**-4, 10**-3, 10**-2, 10**-1])}}, clipnorm=1.)
optims = {{choice(['adam', 'sgd', 'rmsprop', 'adagrad', 'nadam', 'adadelta'])}}
if optims == 'adam': optim = adam_lr
elif optims == 'rmsprop': optim = rmsprop_lr
elif optims == 'sgd': optim = sgd_lr
else: optim = optims
model.compile(loss='categorical_crossentropy', metrics=['accuracy'],
optimizer=optim)
# model_saver = ModelCheckpoint('model.{epoch:02d}-{val_loss:.2f}.hdf5')
early_stop = EarlyStopping(monitor='val_loss', min_delta=0.01, patience=20, verbose=0, mode='auto')
# added to collect optimization results
if 'results' not in globals():
global results
results = []
print(trainx_windows.shape)
result = model.fit(trainx_windows, trainy, epochs=500, batch_size={{choice(np.arange(32, 450))}}, validation_split=0.2, callbacks=[early_stop]) #, model_saver])
score, acc = model.evaluate(testx_windows, testy, verbose=1)
# valLoss = result.history['val_mean_absolute_error'][-1]
parameters = space
print(parameters)
results.append(parameters)
tab_results = tabulate(results, headers="keys", tablefmt="fancy_grid", floatfmt=".8f")
weights = model.get_weights()
# print(weights)
with open('../../output/hp_opt/weights.txt', 'a+') as model_summ:
model_summ.write("model: {}\n\tweights:\n{}\n\tmodel_details:\n{}\n\tscore:\t{}".format(model, list(weights), tab_results, acc))
# print(tab_results)
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def model(x_train, y_train, x_test, y_test):
"""
Model providing function:
Create Keras model with double curly brackets dropped-in as needed.
Return value has to be a valid python dictionary with two customary keys:
- loss: Specify a numeric evaluation metric to be minimized
- status: Just use STATUS_OK and see hyperopt documentation if not feasible
The last one is optional, though recommended, namely:
- model: specify the model just created so that we can later use it again.
"""
# Get the environment and extract the number of actions.
env = gym.make(args.env_name)
np.random.seed(123)
env.seed(123)
nb_actions = env.action_space.n
# Next, we build our model. We use the same model that was described by Mnih et al. (2015).
input_shape = (WINDOW_LENGTH, ) + INPUT_SHAPE
model = Sequential()
if K.image_dim_ordering() == 'tf':
# (width, height, channels)
model.add(Permute((2, 3, 1), input_shape=input_shape))
elif K.image_dim_ordering() == 'th':
# (channels, width, height)
model.add(Permute((1, 2, 3), input_shape=input_shape))
else:
raise RuntimeError('Unknown image_dim_ordering.')
model.add(Convolution2D(32, 8, 8, subsample=(4, 4)))
model.add(Activation('relu'))
model.add(Convolution2D(64, 4, 4, subsample=(2, 2)))
model.add(Activation('relu'))
model.add(Convolution2D(64, 3, 3, subsample=(1, 1)))
model.add(Activation('relu'))
model.add(Flatten())
model.add(Dense({{choice([16, 32, 48, 64])}}))
model.add(Activation({{choice(['relu', 'sigmoid'])}}))
if conditional({{choice(['three', 'four'])}}) == 'four':
model.add(Dense({{choice([16, 32, 48, 64])}}))
model.add({{choice([Dropout(0.5), Activation('linear')])}})
model.add(Activation({{choice(['relu', 'sigmoid'])}}))
if conditional({{choice(['four', 'five'])}}) == 'five':
model.add(Dense({{choice([16, 32, 48, 64])}}))
model.add({{choice([Dropout(0.5), Activation('linear')])}})
model.add(Activation({{choice(['relu', 'sigmoid'])}}))
model.add(Dense(nb_actions))
model.add(Activation('linear'))
print(model.summary())
# Finally, we configure and compile our agent. You can use every built-in Keras optimizer and
# even the metrics!
memory = SequentialMemory(limit=1000000, window_length=WINDOW_LENGTH)
processor = AtariProcessor()
# Select a policy. We use eps-greedy action selection, which means that a random action is selected
# with probability eps. We anneal eps from 1.0 to 0.1 over the course of 1M steps. This is done so that
# the agent initially explores the environment (high eps) and then gradually sticks to what it knows
# (low eps). We also set a dedicated eps value that is used during testing. Note that we set it to 0.05
# so that the agent still performs some random actions. This ensures that the agent cannot get stuck.
policy = LinearAnnealedPolicy(EpsGreedyQPolicy(),
attr='eps',
value_max=1.,
value_min=.1,
value_test=.05,
nb_steps=1000000)
# The trade-off between exploration and exploitation is difficult and an on-going research topic.
# If you want, you can experiment with the parameters or use a different policy. Another popular one
# is Boltzmann-style exploration:
# policy = BoltzmannQPolicy(tau=1.)
# Feel free to give it a try!
dqn = DQNAgent(model=model,
nb_actions=nb_actions,
policy=policy,
memory=memory,
processor=processor,
nb_steps_warmup=50000,
gamma=.99,
target_model_update=10000,
train_interval=4,
delta_clip=1.)
dqn.compile(Adam(lr=.00025), metrics=['mae'])
dqn.fit(env, nb_steps=1750000, log_interval=10000, visualize=False)
hist = dqn.test(env, nb_episodes=10, visualize=True)
rewards = hist.history['episode_reward']
loss = 1.0 / len(rewards) * np.sum([(90.0 - reward)**2
for reward in rewards])
print('Test Loss:', loss)
return {'loss': -loss, 'status': STATUS_OK, 'model': dqn}
def fit_nc_tcn(train_set, val_set):
global n_eval
n_eval += 1
print(str(datetime.datetime.now()) + ": iteration number: " + str(n_eval))
with open("hyper_opt_result.txt", 'a') as f:
f.write(
str(datetime.datetime.now()) + ": iteration number: " +
str(n_eval) + "\n")
cfg = {
"optimizer": {
"name": "adam",
"lr": 0.002,
"clipnorm": 1,
"beta_1": 0.9,
"beta_2": 0.999,
"epsilon": None,
"decay": 0.0
},
"workers": 8,
"use_multiprocessing": True,
"n_epochs": 7
}
nb_filters = []
kernel_size = {{
choice(
[11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41])
}}
dilations = {{
choice([[2**i for i in range(4)], [2**i for i in range(5)],
[2**i for i in range(6)], [2**i for i in range(7)],
[2**i for i in range(8)], [2**i for i in range(9)],
[2**i for i in range(10)]])
}}
nb_stacks = {{choice([3, 4, 5, 6, 7, 8, 9, 10])}}
use_skip_connections = False
n_layers = {{choice([1, 2, 3, 4, 5])}}
nb_filters.append({{choice([8, 16, 32, 64])}})
if conditional(n_layers) >= 2:
nb_filters.append({{choice([8, 16, 32, 64])}})
if conditional(n_layers) >= 3:
nb_filters.append({{choice([8, 16, 32, 64])}})
if conditional(n_layers) >= 4:
nb_filters.append({{choice([8, 16, 32, 64])}})
if conditional(n_layers) >= 5:
nb_filters.append({{choice([8, 16, 32, 64])}})
model = tcn.create_tcn(list_n_filters=nb_filters,
kernel_size=kernel_size,
dilations=dilations,
nb_stacks=nb_stacks,
n_layers=n_layers,
use_skip_connections=use_skip_connections,
dropout_rate={{uniform(0.01, 0.25)}},
bidirectional=True)
n_params = model.count_params()
print(n_params)
print(space)
with open("hyper_opt_result.txt", 'a') as f:
f.write(str(n_params))
for key in space.keys():
f.write(str(key) + " " + str(space[key]) + " ")
f.write('\n')
optimizer = optimizers.adam(lr=cfg["optimizer"]["lr"],
clipnorm=cfg["optimizer"]["clipnorm"])
model.compile(loss=config.LOSS,
metrics=config.METRICS,
optimizer=optimizer)
result = model.fit_generator(
train_set,
epochs=cfg["n_epochs"],
validation_data=val_set,
workers=cfg["workers"],
use_multiprocessing=cfg["use_multiprocessing"],
shuffle=True,
verbose=0)
validation_loss = np.amin(result.history['val_loss'])
csv_line = [n_eval, n_params, validation_loss]
for key in space.keys():
csv_line.append(space[key])
with open(r'fit_b_tcn_log.csv', 'a') as f:
writer = csv.writer(f)
writer.writerow(csv_line)
print('Best validation acc of epoch:', validation_loss)
del model
K.clear_session()
return {'loss': validation_loss, 'status': STATUS_OK}
def model(X_train, Y_train, X_test, Y_test):
'''
Model providing function:
Create Keras model with double curly brackets dropped-in as needed.
Return value has to be a valid python dictionary with two customary keys:
- loss: Specify a numeric evaluation metric to be minimized
- status: Just use STATUS_OK and see hyperopt documentation if not feasible
The last one is optional, though recommended, namely:
- model: specify the model just created so that we can later use it again.
'''
model = Sequential()
model.add(Dense(512, input_shape=(784, )))
model.add(Activation('relu'))
model.add(Dropout({{uniform(0, 1)}}))
model.add(Dense({{choice([256, 512, 1024])}}))
model.add(Activation({{choice(['relu', 'sigmoid'])}}))
model.add(Dropout({{uniform(0, 1)}}))
if conditional({{choice(['three', 'four'])}}) == 'four':
model.add(Dense(100))
model.add(Dropout(0.5))
model.add(Activation('relu'))
model.add(Dense(10))
model.add(Activation('softmax'))
choiceval = {{choice(['adam', 'sgd', 'rmsprop'])}}
if choiceval == 'adam':
adam = Adam(
lr={{choice([10**-6, 10**-5, 10**-4, 10**-3, 10**-2, 10**-1])}},
decay={{choice([1e-2, 1e-3, 1e-4])}},
clipnorm=1.)
optim = adam
elif choiceval == 'rmsprop':
rmsprop = RMSprop(
lr={{choice([10**-6, 10**-5, 10**-4, 10**-3, 10**-2, 10**-1])}},
decay={{choice([1e-2, 1e-3, 1e-4])}},
clipnorm=1.)
optim = rmsprop
else:
sgd = SGD(
lr={{choice([10**-6, 10**-5, 10**-4, 10**-3, 10**-2, 10**-1])}},
decay={{choice([1e-2, 1e-3, 1e-4])}},
clipnorm=1.)
optim = sgd
model.compile(loss='categorical_crossentropy',
optimizer=optim,
metrics=['accuracy'])
globalvars.globalVar += 1
filepath = "../output/weights_fcn_hyperas" + str(
globalvars.globalVar) + ".hdf5"
checkpoint = ModelCheckpoint(filepath,
monitor='val_acc',
verbose=1,
save_best_only=True,
mode='max')
csv_logger = CSVLogger('../output/hyperas_test_log.csv',
append=True,
separator=';')
hist = model.fit(X_train,
Y_train,
batch_size={{choice([64, 128])}},
nb_epoch=1,
verbose=2,
validation_data=(X_test, Y_test),
callbacks=[checkpoint, csv_logger])
h1 = hist.history
acc_ = numpy.asarray(h1['acc'])
loss_ = numpy.asarray(h1['loss'])
val_loss_ = numpy.asarray(h1['val_loss'])
val_acc_ = numpy.asarray(h1['val_acc'])
acc_and_loss = numpy.column_stack((acc_, loss_, val_acc_, val_loss_))
save_file_mlp = '../output/mlp_run_' + '_' + str(
globalvars.globalVar) + '.txt'
with open(save_file_mlp, 'w') as f:
numpy.savetxt(save_file_mlp, acc_and_loss, delimiter=" ")
score, acc = model.evaluate(X_test, Y_test, verbose=0)
print('Test accuracy:', acc)
return {'loss': -acc, 'status': STATUS_OK, 'model': model}
def fit_lstm(train_set, val_set):
global n_eval
n_eval += 1
print(str(datetime.datetime.now()) + ": iteration number: " + str(n_eval))
with open("hyper_opt_result.txt", 'a') as f:
f.write(
str(datetime.datetime.now()) + ": iteration number: " +
str(n_eval) + "\n")
cfg = {
"optimizer": {
"name": "SGD",
"lr": 0.001,
"momentum": 0.9,
"decay": 0
},
"workers": 8,
"use_multiprocessing": True,
"n_epochs": 5
}
n_layer = {{choice([1, 2, 3, 4])}}
layers = []
layers.append({{choice([25, 50, 75, 100, 125, 150, 175, 200, 225, 250])}})
if conditional(n_layer) >= 2:
layers.append(
{{choice([25, 50, 75, 100, 125, 150, 175, 200, 225, 250])}})
if conditional(n_layer) >= 3:
layers.append(
{{choice([25, 50, 75, 100, 125, 150, 175, 200, 225, 250])}})
if conditional(n_layer) >= 4:
layers.append(
{{choice([25, 50, 75, 100, 125, 150, 175, 200, 225,
250])}})
model = lstm.create_lstm(hidden_units=layers,
dropout={{uniform(0.05, 0.5)}},
bidirectional=True)
n_params = model.count_params()
print(n_params)
print(space)
with open("hyper_opt_result.txt", 'a') as f:
f.write(str(n_params))
for key in space.keys():
f.write(str(key) + " " + str(space[key]) + " ")
f.write('\n')
optimizer = optimizers.SGD(lr=cfg["optimizer"]["lr"],
momentum=cfg["optimizer"]["momentum"],
decay=cfg["optimizer"]["decay"])
model.compile(loss=config.LOSS,
metrics=config.METRICS,
optimizer=optimizer)
result = model.fit_generator(
train_set,
epochs=cfg["n_epochs"],
validation_data=val_set,
workers=cfg["workers"],
use_multiprocessing=cfg["use_multiprocessing"],
shuffle=True,
verbose=0)
validation_loss = np.amin(result.history['val_loss'])
csv_line = [n_eval, n_params, validation_loss]
for key in space.keys():
csv_line.append(space[key])
with open(r'fit_b_lstm_log.csv', 'a') as f:
writer = csv.writer(f)
writer.writerow(csv_line)
print('Best validation acc of epoch:', validation_loss)
del model
K.clear_session()
return {'loss': validation_loss, 'status': STATUS_OK}
