Wei-Ting Chang

On the Capacity of Secure Distributed Matrix Multiplication

2018 · arXiv (Cornell University)

Matrix multiplication is one of the key operations in various engineering applications. Outsourcing large-scale matrix multiplication tasks to multiple distributed servers or cloud is desirable to speed up computation. However, security becomes an issue when …

Privacy Amplification for Federated Learning via User Sampling and\n Wireless Aggregation

2021 · arXiv (Cornell University)

In this paper, we study the problem of federated learning over a wireless\nchannel with user sampling, modeled by a Gaussian multiple access channel,\nsubject to central and local differential privacy (DP/LDP) constraints. It has\nbeen shown that …