def model_generator():
nch = 256
g_input = Input(shape=[100])
H = Dense(nch * 14 * 14)(g_input)
H = BatchNormalization(mode=2)(H)
H = Activation('relu')(H)
H = dim_ordering_reshape(nch, 14)(H)
H = UpSampling2D(size=(2, 2))(H)
H = Convolution2D(int(nch / 2), 3, 3, border_mode='same')(H)
H = BatchNormalization(mode=2, axis=1)(H)
H = Activation('relu')(H)
H = Convolution2D(int(nch / 4), 3, 3, border_mode='same')(H)
H = BatchNormalization(mode=2, axis=1)(H)
H = Activation('relu')(H)
H = Convolution2D(1, 1, 1, border_mode='same')(H)
g_V = Activation('sigmoid')(H)
return Model(g_input, g_V)
def get_generator_cifar():
model = Sequential()
nch = 256
reg = lambda: l1l2(l1=1e-7, l2=1e-7)
h = 5
model.add(Dense(nch * 4 * 4, input_dim=100, W_regularizer=reg()))
model.add(BatchNormalization(mode=0))
model.add(Reshape((4, 4, nch)))
model.add(
Convolution2D(int(nch / 2),
h,
h,
border_mode='same',
W_regularizer=reg()))
model.add(BatchNormalization(mode=0, axis=1))
model.add(LeakyReLU(0.2))
model.add(UpSampling2D(size=(2, 2)))
model.add(
Convolution2D(int(nch / 2),
h,
h,
border_mode='same',
W_regularizer=reg()))
model.add(BatchNormalization(mode=0, axis=1))
model.add(LeakyReLU(0.2))
model.add(UpSampling2D(size=(2, 2)))
model.add(
Convolution2D(int(nch / 4),
h,
h,
border_mode='same',
W_regularizer=reg()))
model.add(BatchNormalization(mode=0, axis=1))
model.add(LeakyReLU(0.2))
model.add(UpSampling2D(size=(2, 2)))
model.add(Convolution2D(3, h, h, border_mode='same', W_regularizer=reg()))
model.add(Activation('sigmoid'))
return model