new_GCN_keras

图卷积代码，暂时因为tensorflow框架的问题还不能进行反向传播 具体报错代码在 tensorflow/python/framework/op_def_library

TODO(b/31302892): Currently the defaults don't work in the right

way if you have two inputs, one of whose type resolution depends

on the other. Handling this will require restructuring this code

significantly.