Efficient and self-recoverable privacy-preserving k-NN classification system with robustness to network delay

Jinhai Zhang, Junwei Zhang, Zhuo Ma, Yang Liu, Xindi Ma, Jianfeng Ma

Abstract: Highlights•Constant online communication rounds, efficient and robust classification service even under network delay.•Secure redundant backup servers to enable fast system self-recovery without data re-upload.•Client-friendly and lightweight scheme for low-power IoT devices.