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BAFL: A Blockchain-Based Asynchronous Federated Learning Framework | IEEE Journals & Magazine | IEEE Xplore

BAFL: A Blockchain-Based Asynchronous Federated Learning Framework


Abstract:

As an emerging distributed machine learning (ML) method, federated learning (FL) can protect data privacy through collaborative learning of artificial intelligence (AI) m...Show More

Abstract:

As an emerging distributed machine learning (ML) method, federated learning (FL) can protect data privacy through collaborative learning of artificial intelligence (AI) models across a large number of devices. However, inefficiency and vulnerability to poisoning attacks have slowed FL performance. Therefore, a blockchain-based asynchronous federated learning (BAFL) framework is proposed to ensure the security and efficiency required by FL. The blockchain ensures that the model data cannot be tampered with while asynchronous learning speeds up global aggregation. A novel entropy weight method is used to evaluate the participating rank and proportion of the local model trained in BAFL of the devices. The energy consumption and local model update efficiency are balanced by adjusting the local training and communication delay and optimizing the block generation rate. The extensive evaluation results show that the proposed BAFL framework has higher efficiency and higher performance for preventing poisoning attacks than other distributed ML methods.
Published in: IEEE Transactions on Computers ( Volume: 71, Issue: 5, 01 May 2022)
Page(s): 1092 - 1103
Date of Publication: 09 April 2021

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