# Add node

extend shape: https://github.com/onnx/onnx/issues/3920

add node (extend output's dim): https://github.com/onnx/onnx/issues/2709

add node （NMS）: https://github.com/onnx/onnx/issues/2216

add node (add preprocess nodes): https://zhuanlan.zhihu.com/p/394395167

# modify attribute of nodes

topk: https://github.com/onnx/onnx/issues/2921



# done

remove layer: https://github.com/onnx/onnx/issues/2638



# 或许可以帮助

http://yyixx.com/docs/algo/onnx/