ma_cisco_malware/models/pauls_networks.py

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import keras
from keras.engine import Input, Model
from keras.layers import Embedding, Conv1D, GlobalMaxPooling1D, Dense, Dropout, Activation, TimeDistributed
2017-07-07 16:48:10 +02:00
best_config = {
'domain_features': 32,
'drop_out': 0.5,
'embedding_size': 64,
'filter_main': 512,
'flow_features': 3,
'hidden_dims': 32,
'filter_embedding': 32,
'hidden_embedding': 32,
'kernel_embedding': 8,
'kernels_main': 8,
'input_length': 40
}
def get_embedding(vocab_size, embedding_size, input_length,
filters, kernel_size, hidden_dims, drop_out=0.5):
x = y = Input(shape=(input_length,))
y = Embedding(input_dim=vocab_size, output_dim=embedding_size)(y)
y = Conv1D(filters, kernel_size, activation='relu')(y)
y = GlobalMaxPooling1D()(y)
y = Dense(hidden_dims)(y)
y = Dropout(drop_out)(y)
y = Activation('relu')(y)
return Model(x, y)
def get_model(cnnDropout, flow_features, domain_features, window_size, domain_length, cnn_dims, kernel_size,
dense_dim, cnn):
ipt_domains = Input(shape=(window_size, domain_length), name="ipt_domains")
encoded = TimeDistributed(cnn)(ipt_domains)
ipt_flows = Input(shape=(window_size, flow_features), name="ipt_flows")
merged = keras.layers.concatenate([encoded, ipt_flows], -1)
# CNN processing a small slides of flow windows
# TODO: add more layers?
y = Conv1D(cnn_dims,
kernel_size,
activation='relu',
input_shape=(window_size, domain_features + flow_features))(merged)
# remove temporal dimension by global max pooling
y = GlobalMaxPooling1D()(y)
y = Dropout(cnnDropout)(y)
y = Dense(dense_dim, activation='relu')(y)
y1 = Dense(2, activation='softmax', name="client")(y)
y2 = Dense(2, activation='softmax', name="server")(y)
return Model(inputs=[ipt_domains, ipt_flows], outputs=(y1, y2))