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multimodal_autoencoder.py
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multimodal_autoencoder.py
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from keras.models import Model
from keras.layers import Dense, Input
# from keras.layers import Dropout
from keras import regularizers
# from keras.layers import BatchNormalization
# from keras.callbacks import CSVLogger
# from keras import initializers
import tensorflow as tf
from keras.backend import tensorflow_backend as K
from preprocess import unsw, nslkdd
from netlearner.utils import permutate_dataset, min_max_scale
import numpy as np
import logging
def multicore_session():
config = tf.ConfigProto(intra_op_parallelism_threads=32,
inter_op_parallelism_threads=32,
allow_soft_placement=True,
log_device_placement=False,
device_count={'CPU': 64})
session = tf.Session(config=config)
K.set_session(session)
def process_unsw(root='SharedAutoEncoder/'):
unsw.generate_dataset(one_hot_encode=True, root_dir=root)
raw_X_train = np.load(root + 'UNSW/train_dataset.npy')
y_train = np.load(root + 'UNSW/train_labels.npy')
raw_X_test = np.load(root + 'UNSW/test_dataset.npy')
y_test = np.load(root + 'UNSW/test_labels.npy')
[X_train, _, X_test] = min_max_scale(raw_X_train, None, raw_X_test)
permutate_dataset(X_train, y_train)
permutate_dataset(X_test, y_test)
print('Training set', X_train.shape, y_train.shape)
print('Test set', X_test.shape, y_test.shape)
return {'X': X_train, 'y': y_train, 'X_test': X_test, 'y_test': y_test}
def process_nsl(root='SharedAutoEncoder/'):
nslkdd.generate_datasets(True, one_hot_encoding=True, root=root)
raw_X_train = np.load(root + 'NSLKDD/train_dataset.npy')
y_train = np.load(root + 'NSLKDD/train_labels.npy')
raw_X_test = np.load(root + 'NSLKDD/test_dataset.npy')
y_test = np.load(root + 'NSLKDD/test_labels.npy')
[X_train, _, X_test] = min_max_scale(raw_X_train, None, raw_X_test)
permutate_dataset(X_train, y_train)
permutate_dataset(X_test, y_test)
print('Training set', X_train.shape, y_train.shape)
print('Test set', X_test.shape, y_test.shape)
return {'X': X_train, 'y': y_train, 'X_test': X_test, 'y_test': y_test}
def single_encoder(feature_dim, H1, U):
input_layer = Input(shape=(feature_dim, ), name='unsw')
h1 = Dense(H1, activation='relu', name='h1')(input_layer)
# bn1 = BatchNormalization(name='bn1')(h1)
encoding = Dense(U, activation='relu', name='encoding')(h1)
# bn2 = BatchNormalization(name='bn2')(encoding)
h3 = Dense(H1, activation='relu', name='h3')(encoding)
# bn3 = BatchNormalization(name='bn3')(h3)
h4 = Dense(feature_dim, activation='sigmoid', name='h4')(h3)
model = Model(inputs=input_layer, outputs=h4)
model.compile(optimizer='adam', loss='binary_crossentropy')
encoder = Model(inputs=input_layer, outputs=encoding) # or bn2
return model, encoder
def multimodal_autoencoder(unsw_dim, nsl_dim, H1, U):
unsw = Input(shape=(unsw_dim, ), name='input_unsw')
nsl = Input(shape=(nsl_dim, ), name='input_nsl')
h1_unsw = Dense(H1, activation='relu', name='h1_unsw')(unsw)
h1_nsl = Dense(H1, activation='relu', name='h1_nsl')(nsl)
# h1_unsw = BatchNormalization(name='bn1_unsw')(h1_unsw)
# h1_nsl = BatchNormalization(name='bn1_nsl')(h1_nsl)
shared_ae = Dense(U, activation='relu', name='shared')
shared_unsw = shared_ae(h1_unsw)
shared_nsl = shared_ae(h1_nsl)
# bns_unsw = BatchNormalization(name='bn2_unsw')(shared_unsw)
# bns_nsl = BatchNormalization(name='bn2_nsl')(shared_nsl)
h3_unsw = Dense(H1, activation='relu', name='h3_unsw')(shared_unsw)
h3_nsl = Dense(H1, activation='relu', name='h3_nsl')(shared_nsl)
# h3_unsw = BatchNormalization(name='bn3_unsw')(h3_unsw)
# h3_nsl = BatchNormalization(name='bn3_nsl')(h3_nsl)
h4_unsw = Dense(unsw_dim, activation='sigmoid', name='h4_unsw')(h3_unsw)
h4_nsl = Dense(nsl_dim, activation='sigmoid', name='h4_nsl')(h3_nsl)
model_unsw = Model(inputs=unsw, output=h4_unsw)
model_unsw.compile(optimizer='adam', loss='binary_crossentropy')
model_unsw.summary()
model_nsl = Model(inputs=nsl, output=h4_nsl)
model_nsl.compile(optimizer='adam', loss='binary_crossentropy')
model_nsl.summary()
encoder_unsw = Model(inputs=unsw, outputs=shared_unsw)
encoder_nsl = Model(inputs=nsl, outputs=shared_nsl)
return model_unsw, model_nsl, encoder_unsw, encoder_nsl
def linear_model(feature_dim, reg_beta=0.00):
main_input = Input(shape=(feature_dim, ), name='main_input')
sm = Dense(2, activation='softmax', name='h1',
kernel_regularizer=regularizers.l2(reg_beta))(main_input)
model = Model(inputs=main_input, outputs=sm)
model.compile(optimizer='adam', loss='binary_crossentropy',
metrics=['accuracy'])
model.summary()
return model
def train_single_encoder(X, X_test, H1, U, num_epochs, batch_size, name):
feature_dim = X.shape[1]
model, encoder = single_encoder(feature_dim, H1, U)
# csv_logger = CSVLogger(root_dir + 'ae_%s.history' % name, append=True)
# model.fit(X, X, batch_size, num_epochs, callbacks=[csv_logger])
model.fit(X, X, batch_size, num_epochs, verbose=0)
EX = encoder.predict(X)
EX_test = encoder.predict(X_test)
return EX, EX_test
def train_linear_model(X, y, X_test, y_test, num_epochs, batch_size, beta):
feature_dim = X.shape[1]
classifier = linear_model(feature_dim, beta)
classifier.fit(X, y, batch_size, num_epochs, verbose=0)
scores = classifier.evaluate(X_test, y_test, batch_size=X_test.shape[0])
return scores, classifier
def supervised_single(unsw_dict, nsl_dict, H1, U, num_epochs, batch_size, beta):
logger.info('Using Single AE with Linear Classifier')
X_unsw = unsw_dict['X']
X_unsw_test = unsw_dict['X_test']
y_unsw = unsw_dict['y']
y_unsw_test = unsw_dict['y_test']
X_nsl = nsl_dict['X']
X_nsl_test = nsl_dict['X_test']
y_nsl = nsl_dict['y']
y_nsl_test = nsl_dict['y_test']
EX_unsw, EX_unsw_test = train_single_encoder(X_unsw, X_unsw_test,
H1, U, num_epochs,
batch_size, 'unsw')
EX_nsl, EX_nsl_test = train_single_encoder(X_nsl, X_nsl_test,
H1, U, num_epochs,
batch_size, 'nsl')
# Get accu6(unsw) and accu6(nsl)
EX_concat = np.concatenate((EX_unsw, EX_nsl), axis=0)
y_concat = np.concatenate((y_unsw, y_nsl), axis=0)
print(EX_concat.shape, y_concat.shape)
scores6U, lm = train_linear_model(EX_concat, y_concat,
EX_unsw_test, y_unsw_test,
num_epochs, batch_size, beta)
logger.info('Trained on concat unshared-encoding, UNSW accu6\t%.6f'
% scores6U[1])
scores6N = lm.evaluate(EX_nsl_test, y_nsl_test,
batch_size=EX_nsl_test.shape[0])
logger.info('Trained on concat unshared-encoding, NSL accu6\t%.6f'
% scores6N[1])
# Get accu3
scores3, _ = train_linear_model(EX_unsw, y_unsw, EX_unsw_test, y_unsw_test,
num_epochs, batch_size, beta)
logger.info('Trained on single UNSW-encoding, accu3\t%.6f' % scores3[1])
# Get accu1
scores1, _ = train_linear_model(EX_nsl, y_nsl, EX_nsl_test, y_nsl_test,
num_epochs, batch_size, beta)
logger.info('Trained on single NSL-encoding, accu1\t%.6f' % scores1[1])
return {'accu1': scores1[1], 'accu3': scores3[1],
'accu6(UNSL)': scores6U[1], 'accu6(NSL)': scores6N[1]}
def supervised_shared(unsw_dict, nsl_dict, H1, U, num_epochs, batch_size, beta):
logger.info('Using Shared AE with Linear Classifier')
X_unsw = unsw_dict['X']
X_unsw_test = unsw_dict['X_test']
y_unsw = unsw_dict['y']
y_unsw_test = unsw_dict['y_test']
X_nsl = nsl_dict['X']
X_nsl_test = nsl_dict['X_test']
y_nsl = nsl_dict['y']
y_nsl_test = nsl_dict['y_test']
(unsw_size, unsw_dim) = X_unsw.shape
(nsl_size, nsl_dim) = X_nsl.shape
unsw_model, nsl_model, encoder_unsw, encoder_nsl = multimodal_autoencoder(
unsw_dim, nsl_dim, H1, U)
encoder_loss = [[], []]
for _ in range(num_epochs):
unsw_model.fit(X_unsw, X_unsw, batch_size, epochs=1)
encoder_loss[0].append(
unsw_model.evaluate(X_unsw, X_unsw, unsw_size, verbose=0))
encoder_loss[1].append(
nsl_model.evaluate(X_nsl, X_nsl, nsl_size, verbose=0))
nsl_model.fit(X_nsl, X_nsl, batch_size, epochs=1)
encoder_loss[0].append(
unsw_model.evaluate(X_unsw, X_unsw, unsw_size, verbose=0))
encoder_loss[1].append(
nsl_model.evaluate(X_nsl, X_nsl, nsl_size, verbose=0))
print(encoder_loss[0])
print(encoder_loss[1])
# Get the shared representation of both datasets
EX_unsw = encoder_unsw.predict(X_unsw)
EX_unsw_test = encoder_unsw.predict(X_unsw_test)
EX_nsl = encoder_nsl.predict(X_nsl)
EX_nsl_test = encoder_nsl.predict(X_nsl_test)
# Get accu5(unsw) and accu5(nsl)
EX_concat = np.concatenate((EX_unsw, EX_nsl), axis=0)
y_concat = np.concatenate((y_unsw, y_nsl), axis=0)
scores5U, lm = train_linear_model(EX_concat, y_concat,
EX_unsw_test, y_unsw_test,
num_epochs, batch_size, beta)
logger.info('Trained on concat shared-encoding, UNSW accu5\t%.6f'
% scores5U[1])
scores5N = lm.evaluate(EX_nsl_test, y_nsl_test,
batch_size=EX_nsl_test.shape[0])
logger.info('Trained on concat shared-encoding, NSL accu5\t%.6f'
% scores5N[1])
# Get accu4
scores4, _ = train_linear_model(EX_unsw, y_unsw, EX_unsw_test, y_unsw_test,
num_epochs, batch_size, beta)
logger.info('Trained on shared UNSW-encoding, accu4\t%.6f' % scores4[1])
# Get accu2
scores2, _ = train_linear_model(EX_nsl, y_nsl, EX_nsl_test, y_nsl_test,
num_epochs, batch_size, beta)
logger.info('Trained on shared NSL-encoding, accu2\t%.6f' % scores2[1])
return {'accu2': scores2[1], 'accu4': scores4[1],
'accu5(UNSL)': scores5U[1], 'accu5(NSL)': scores5N[1]}
def run_master(unsw_dict, nsl_dict, H1, U):
num_epochs = 12
batch_size = 100
beta = 0.01
multicore_session()
logger.info('Network config: %s %s %s %s for %d train epochs and %d batch'
% (H1, U, U, H1, num_epochs, batch_size))
part1 = dict()
part1 = supervised_single(unsw_dict, nsl_dict, H1, U,
num_epochs, batch_size, beta)
part2 = supervised_shared(unsw_dict, nsl_dict, H1, U,
num_epochs, batch_size, beta)
return dict(part1, **part2)
if __name__ == '__main__':
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger('SharedAEX2')
root_dir = 'SharedAutoEncoder/'
hdlr = logging.FileHandler(root_dir + 'accuracy.log')
formatter = logging.Formatter('%(asctime)s %(message)s')
hdlr.setFormatter(formatter)
logger.addHandler(hdlr)
logger.setLevel(logging.INFO)
unsw_dict = process_unsw(root_dir)
nsl_dict = process_nsl(root_dir)
layer_sizes = [720]
num_runs = 6
mult = 2
results = []
for H1 in layer_sizes:
logger.info('***************************************************')
logger.info('**** Start %d runs with layer config %d *******'
% (num_runs, H1))
logger.info('***************************************************')
for i in range(num_runs):
logger.info('*** Run index %d ***' % i)
results.append(run_master(unsw_dict, nsl_dict, H1, H1 * mult))
tf.reset_default_graph()
np.save(root_dir + 'result_%dX%d_run%d.npy' % (H1, mult, num_runs),
results)