@article{tighteningtheapproximationerrorof, title = {Tightening the Approximation Error of Adversarial Risk with Auto Loss Function Search}, author = {Pengfei Xia and Ziqiang Li and Bin Li}, year = {2021}, eprint = {2111.05063}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2111.05063v2}, }