A Blockchain-Based Federated Learning Method for Smart Healthcare

Table 1

Main symbols.

Symbols	Definitions
T	The total number of training rounds
K	The number of MIoT devices
M	The size of the verification committee
	The local gradient of i-th device in the t-th training round
	The noised gradient of i-th device in the t-th training round
	The gradient clipping threshold in the t-th training round
G	Prior threshold
	Privacy budget
	Violation probability of the “pure” differential privacy