#from keras.layers.merge import Concatenate #tensorflow1 from keras.layers.merging.concatenate import Concatenate #tensorflow2 tensorflow 2.4부터 tensorflow.keras.utils.multi_gpu_model이 제거되어 사용 안됨 #from keras.engine import InputSpec #tensorflow1 from keras.layers import InputSpec #tensorflow2 tf1 버젼 x = tf.layers.conv2d(x, 32, 3, activation=tf.nn.relu, kernel_regularizer=tf.contrib.layers.l2_regul..