Paper

https://papers.nips.cc/paper_files/paper/2017/file/8a20a8621978632d76c43dfd28b67767-Paper.pdf#page=1.63

정리

https://docs.google.com/presentation/d/1aEH_b2MFEzRoUfGVm7Thfjkgxx95sACCpAOj01ccIT8/edit?usp=sharing