ScaleCert: Scalable Certified Defense against Adversarial Patches with Sparse Superficial Layers - Han, Husheng; Xu, Kaidi; Hu, Xing; Chen, Xiaobing; LIANG, Ling; Du, Zidong; Guo, Qi; Wang, Yanzhi; Chen, Yunji (Advances in Neural Information Processing Systems, 2021)