Journal
FRONTIERS OF COMPUTER SCIENCE
Volume 16, Issue 5, Pages -Publisher
HIGHER EDUCATION PRESS
DOI: 10.1007/s11704-021-0598-z
Keywords
federated learning; privacy protection; security
Categories
Funding
- Guangdong Provincial Key Laboratory [2020B121201001]
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As privacy concerns grow, federated learning has emerged to protect users' sensitive information. However, due to its distributed nature, federated learning is more vulnerable to attacks and there is still room for improvement in the current frameworks.
Federated learning came into being with the increasing concern of privacy security, as people's sensitive information is being exposed under the era of big data. It is an algorithm that does not collect users' raw data, but aggregates model parameters from each client and therefore protects user's privacy. Nonetheless, due to the inherent distributed nature of federated learning, it is more vulnerable under attacks since users may upload malicious data to break down the federated learning server. In addition, some recent studies have shown that attackers can recover information merely from parameters. Hence, there is still lots of room to improve the current federated learning frameworks. In this survey, we give a brief review of the state-of-the-art federated learning techniques and detailedly discuss the improvement of federated learning. Several open issues and existing solutions in federated learning are discussed. We also point out the future research directions of federated learning.
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