Python distributions.choice方法代碼示例

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
def create_model(x_train):
    network = scgen.VAEArith(x_dimension=x_train.X.shape[1],
                             z_dimension={{choice([10, 20, 50, 75, 100])}},
                             learning_rate={{choice([0.1, 0.01, 0.001, 0.0001])}},
                             alpha={{choice([0.1, 0.01, 0.001, 0.0001, 0.00001, 0.000001])}},
                             dropout_rate={{choice([0.2, 0.25, 0.5, 0.75, 0.8])}},
                             model_path=f"./")

    result = network.train(x_train,
                           n_epochs={{choice([100, 150, 200, 250])}},
                           batch_size={{choice([32, 64, 128, 256])}},
                           verbose=2,
                           shuffle=True,
                           save=False)
    best_loss = np.amin(result.history['loss'])
    print('Best Loss of model:', best_loss)
    return {'loss': best_loss, 'status': STATUS_OK, 'model': network.vae_model} 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
def model(X_train, Y_train, X_test, Y_test):
    model = Sequential()
    model.add(Dense({{choice([15, 512, 1024])}},input_dim=8,init='uniform', activation='softplus'))
    model.add(Dropout({{uniform(0, 1)}}))
    model.add(Dense({{choice([256, 512, 1024])}}))
    model.add(Activation({{choice(['relu', 'sigmoid','softplus'])}}))
    model.add(Dropout({{uniform(0, 1)}}))
    
    model.add(Dense(1, init='uniform', activation='sigmoid'))

    model.compile(loss='mse', metrics=['accuracy'],
                  optimizer={{choice(['rmsprop', 'adam', 'sgd'])}})

    model.fit(X_train, Y_train,
              batch_size={{choice([10, 50, 100])}},
              nb_epoch={{choice([1, 50])}},
              show_accuracy=True,
              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} 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
def model(X_train, X_test, Y_train, 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([400, 512, 600])}}))
    model.add(Activation('relu'))
    model.add(Dropout({{uniform(0, 1)}}))
    model.add(Dense(10))
    model.add(Activation('softmax'))

    rms = RMSprop()
    model.compile(loss='categorical_crossentropy', optimizer=rms, metrics=['accuracy'])

    nb_epoch = 10
    batch_size = 128

    model.fit(X_train, Y_train,
              batch_size=batch_size, nb_epoch=nb_epoch,
              verbose=2,
              validation_data=(X_test, Y_test))

    score, acc = model.evaluate(X_test, Y_test, verbose=0)

    return {'loss': -acc, 'status': STATUS_OK, 'model': model} 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
def model(X_train, Y_train, X_test, Y_test):
    inputs = Input(shape=(784,))

    x = Dense({{choice([20, 30, 40])}}, activation='relu')(inputs)
    x = Dense(64, activation='relu')(x)
    predictions = Dense(10, activation='softmax')(x)
    model = Model(inputs=inputs, outputs=predictions)

    rms = RMSprop()
    model.compile(loss='categorical_crossentropy', optimizer=rms, metrics=['accuracy'])

    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} 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
def model_multi_line_arguments(X_train, Y_train,
                               X_test, Y_test):
    inputs = Input(shape=(784,))

    x = Dense({{choice([20, 30, 40])}}, activation='relu')(inputs)
    x = Dense(64, activation='relu')(x)
    predictions = Dense(10, activation='softmax')(x)
    model = Model(inputs=inputs, outputs=predictions)

    model.compile(loss='categorical_crossentropy', optimizer='adam', metrics=['accuracy'])

    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} 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
def create_model(x_train, y_train, x_test, y_test):
    model = Sequential()
    model.add(Dense(44, input_shape=(784,)))
    model.add(Activation({{choice(['relu', 'sigmoid'])}}))
    model.add(Dense(44))
    model.add(Activation({{choice(['relu', 'sigmoid'])}}))
    model.add(Dense(10))

    model.compile(loss='mae', metrics=['mse'], optimizer="adam")

    es = EarlyStopping(monitor='val_loss', min_delta=1e-5, patience=10)
    rlr = ReduceLROnPlateau(factor=0.1, patience=10)
    _ = model.fit(x_train, y_train, epochs=1, verbose=0, callbacks=[es, rlr],
                  batch_size=24, validation_data=(x_test, y_test))

    mae, mse = model.evaluate(x_test, y_test, verbose=0)
    print('MAE:', mae)
    return {'loss': mae, 'status': STATUS_OK, 'model': model} 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
def ensemble_model(X_train, X_test, Y_train, 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([400, 512, 600])}}))
    model.add(Activation('relu'))
    model.add(Dropout({{uniform(0, 1)}}))
    model.add(Dense(10))
    model.add(Activation('softmax'))

    rms = RMSprop()
    model.compile(loss='categorical_crossentropy', optimizer=rms, metrics=['accuracy'])

    nb_epoch = 10
    batch_size = 128

    model.fit(X_train, Y_train,
              batch_size=batch_size, nb_epoch=nb_epoch,
              verbose=2,
              validation_data=(X_test, Y_test))

    score, acc = model.evaluate(X_test, Y_test, verbose=0)

    return {'loss': -acc, 'status': STATUS_OK, 'model': model} 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
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
    from keras.optimizers import RMSprop

    keras_model = Sequential()
    keras_model.add(Dense(512, input_shape=(784,)))
    keras_model.add(Activation('relu'))
    keras_model.add(Dropout({{uniform(0, 1)}}))
    keras_model.add(Dense({{choice([256, 512, 1024])}}))
    keras_model.add(Activation('relu'))
    keras_model.add(Dropout({{uniform(0, 1)}}))
    keras_model.add(Dense(10))
    keras_model.add(Activation('softmax'))

    rms = RMSprop()
    keras_model.compile(loss='categorical_crossentropy', optimizer=rms, metrics=['acc'])

    keras_model.fit(x_train, y_train,
                    batch_size={{choice([64, 128])}},
                    epochs=1,
                    verbose=2,
                    validation_data=(x_test, y_test))
    score, acc = keras_model.evaluate(x_test, y_test, verbose=0)
    print('Test accuracy:', acc)
    return {'loss': -acc, 'status': STATUS_OK, 'model': keras_model.to_yaml(),
            'weights': pickle.dumps(keras_model.get_weights())}


# Create Spark context 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
def model(x_train, y_train, x_test, y_test):
    from keras.models import Sequential
    from keras.layers.core import Dense, Dropout, Activation
    from keras.optimizers import RMSprop

    keras_model = Sequential()
    keras_model.add(Dense(512, input_shape=(784,)))
    keras_model.add(Activation('relu'))
    keras_model.add(Dropout({{uniform(0, 1)}}))
    keras_model.add(Dense({{choice([256, 512, 1024])}}))
    keras_model.add(Activation('relu'))
    keras_model.add(Dropout({{uniform(0, 1)}}))
    keras_model.add(Dense(10))
    keras_model.add(Activation('softmax'))

    rms = RMSprop()
    keras_model.compile(loss='categorical_crossentropy',
                        optimizer=rms, metrics=['acc'])

    keras_model.fit(x_train, y_train,
                    batch_size={{choice([64, 128])}},
                    epochs=1,
                    verbose=2,
                    validation_data=(x_test, y_test))
    score, acc = keras_model.evaluate(x_test, y_test, verbose=0)
    print('Test accuracy:', acc)
    return {'loss': -acc, 'status': STATUS_OK, 'model': keras_model.to_yaml(),
            'weights': pickle.dumps(keras_model.get_weights())} 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
def data(search_params):
    global mat

    BATCH_SIZE = search_params["batch_size"]# {{choice([20, 30, 40, 50])}}
    TIME_STEPS = search_params["time_steps"] # {{choice([30, 60, 90])}}
    x_train, x_test = train_test_split(mat, train_size=0.8, test_size=0.2, shuffle=False)

    # scale the train and test dataset
    min_max_scaler = MinMaxScaler()
    x_train = min_max_scaler.fit_transform(x_train)
    x_test = min_max_scaler.transform(x_test)

    x_train_ts, y_train_ts = build_timeseries(x_train, 3, TIME_STEPS)
    x_test_ts, y_test_ts = build_timeseries(x_test, 3, TIME_STEPS)
    x_train_ts = trim_dataset(x_train_ts, BATCH_SIZE)
    y_train_ts = trim_dataset(y_train_ts, BATCH_SIZE)
    print("Train size(trimmed) {}, {}".format(x_train_ts.shape, y_train_ts.shape))
    # this is to check if formatting of data is correct
    print("{},{}".format(x_train[TIME_STEPS - 1, 3], y_train_ts[0]))
    print(str(x_train[TIME_STEPS, 3]), str(y_train_ts[1]))
    print(str(x_train[TIME_STEPS + 1, 3]), str(y_train_ts[2]))
    print(str(x_train[TIME_STEPS + 2, 3]), str(y_train_ts[3]))
    print(str(x_train[TIME_STEPS + 3, 3]), str(y_train_ts[4]))
    print(str(x_train[TIME_STEPS + 4, 3]), str(y_train_ts[5]))
    print(str(x_train[TIME_STEPS + 5, 3]), str(y_train_ts[6]))
    x_test_ts = trim_dataset(x_test_ts, BATCH_SIZE)
    y_test_ts = trim_dataset(y_test_ts, BATCH_SIZE)
    
    # example usage of logger. You can try out on better places
    logging.debug("Test size(trimmed) {}, {}".format(x_test_ts.shape, y_test_ts.shape))

    logging.debug("Are any NaNs present in train/test matrices?{0},{1}".format(str(np.isnan(x_train).any()),
                                                                       str(np.isnan(x_test).any())))
    return x_train_ts, y_train_ts, x_test_ts, y_test_ts 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
def create_model(tr_pairs, tr_y, te_pairs, te_y,input_shape):
    epochs = 20
    dropout1 = {{uniform(0,1)}}
    dropout2 = {{uniform(0,1)}}
    dense_filter1 = {{choice([64,128,256])}}
    dense_filter2 = {{choice([64,128,256])}}
    dense_filter3 = {{choice([64,128,256])}}
    # network definition
    base_network = create_base_network(input_shape,dense_filter1,dense_filter2,dense_filter3,dropout1,dropout2)

    input_a = Input(shape=input_shape)
    input_b = Input(shape=input_shape)

    processed_a = base_network(input_a)
    processed_b = base_network(input_b)

    distance = Lambda(euclidean_distance,
                      output_shape=eucl_dist_output_shape)([processed_a, processed_b])

    model = Model([input_a, input_b], distance)

    rms = RMSprop()
    model.compile(loss=contrastive_loss, optimizer=rms, metrics=[accuracy])
    model.fit([tr_pairs[:, 0], tr_pairs[:, 1]], tr_y,
              batch_size=128,
              epochs=epochs,
              verbose=1,
              validation_data=([te_pairs[:, 0], te_pairs[:, 1]], te_y))

    y_pred = model.predict([tr_pairs[:, 0], tr_pairs[:, 1]])
    tr_acc = compute_accuracy(tr_y, y_pred)
    y_pred = model.predict([te_pairs[:, 0], te_pairs[:, 1]])
    te_acc = compute_accuracy(te_y, y_pred)
    print('* Accuracy on training set: %0.2f%%' % (100 * tr_acc))
    print('* Accuracy on test set: %0.2f%%' % (100 * te_acc))

    return {'loss': -te_acc, 'status': STATUS_OK, 'model': model} 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
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('relu'))
    model.add(Dropout({{uniform(0, 1)}}))
    model.add(Dense(10))
    model.add(Activation('softmax'))

    rms = RMSprop()
    model.compile(loss='categorical_crossentropy', optimizer=rms, metrics=['accuracy'])

    model.fit(X_train, Y_train,
              batch_size={{choice([64, 128])}},
              nb_epoch=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} 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
def model(X_train, X_test, y_train, y_test, max_features, maxlen):
    model = Sequential()
    model.add(Embedding(max_features, 128, input_length=maxlen))
    model.add(LSTM(128))
    model.add(Dropout({{uniform(0, 1)}}))
    model.add(Dense(1))
    model.add(Activation('sigmoid'))

    model.compile(loss='binary_crossentropy',
                  optimizer='adam',
                  metrics=['accuracy'])

    early_stopping = EarlyStopping(monitor='val_loss', patience=4)
    checkpointer = ModelCheckpoint(filepath='keras_weights.hdf5',
                                   verbose=1,
                                   save_best_only=True)

    model.fit(X_train, y_train,
              batch_size={{choice([32, 64, 128])}},
              nb_epoch=1,
              validation_split=0.08,
              callbacks=[early_stopping, checkpointer])

    score, acc = model.evaluate(X_test, y_test, verbose=0)

    print('Test accuracy:', acc)
    return {'loss': -acc, 'status': STATUS_OK, 'model': model} 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
def model(X_train, X_test, y_train, y_test, maxlen, max_features):
    embedding_size = 300
    pool_length = 4
    lstm_output_size = 100
    batch_size = 200
    nb_epoch = 1

    model = Sequential()
    model.add(Embedding(max_features, embedding_size, input_length=maxlen))
    model.add(Dropout({{uniform(0, 1)}}))
    # Note that we use unnamed parameters here, which is bad style, but is used here
    # to demonstrate that it works. Always prefer named parameters.
    model.add(Convolution1D({{choice([64, 128])}},
                            {{choice([6, 8])}},
                            border_mode='valid',
                            activation='relu',
                            subsample_length=1))
    model.add(MaxPooling1D(pool_length=pool_length))
    model.add(LSTM(lstm_output_size))
    model.add(Dense(1))
    model.add(Activation('sigmoid'))

    model.compile(loss='binary_crossentropy',
                  optimizer='adam',
                  metrics=['accuracy'])

    print('Train...')
    model.fit(X_train, y_train, batch_size=batch_size, nb_epoch=nb_epoch,
              validation_data=(X_test, y_test))
    score, acc = model.evaluate(X_test, y_test, batch_size=batch_size)

    print('Test score:', score)
    print('Test accuracy:', acc)
    return {'loss': -acc, 'status': STATUS_OK, 'model': model} 

# 需要導入模塊: from hyperas import distributions [as 別名]
# 或者: from hyperas.distributions import choice [as 別名]
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 we choose 'four', add an additional fourth layer
    if {{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}