?????. ???? ?????? ?? ????. ID ?? db8c2df1-091b-4ea6-9297-88fb1146b662, f3d3630a-530c-43b3-b876-1efd0480f0e7 ???? ??????. vgg pre-trained ???? ???? weight ???? ??? ?????. Case1) ID : f3d3630a-530c-43b3-b876-1efd0480f0e7 weights='imagenet'?? ????? ?? ??> conv_base = VGG16(weights='imagenet', include_top=False, input_shape=(IMAGE_SIZE, IMAGE_SIZE, 3)) ??> Exception: URL fetch failure on https://github.com/fchollet/deep-learning-models/releases/download/v0.1/vgg16_weights_tf_dim_ordering_tf_kernels_notop.h5 : None -- [Errno -3] Temporary failure in name resolution ??? ????, Case2) ID : db8c2df1-091b-4ea6-9297-88fb1146b662 weights? ??? ???? ??? ???? ??> conv_base = VGG16(weights='/vgg16_weights_tf_dim_ordering_tf_kernels_notop.h5', include_top=False, input_shape=(IMAGE_SIZE, IMAGE_SIZE, 3)) ??> ValueError: The `weights` argument should be either `None` (random initialization), `imagenet` (pre-training on ImageNet), or the path to the weights file to be loaded. ??? ?????. ?? ????? ?? ???? ?? ????? ?? ??? ????? Case2??? weights?? ???? ???? ???? ??????? ??? ?????. ?????.