A COVID-19 Auxiliary Diagnosis Based on Federated Learning and Blockchain

Algorithm 2

: FB-COVID-19 AD (non-IID).

Initialize:, , , ,

Medical Institutions(Asynchronous):

1. while:

2.    ← LocalUpdate()

3.    ← LocalUpdate()

   BlockChain(Synchronous):

4.   if:

5.      MineBlock()

6.     TransmitBlock()

7.      ← GlobalUpdate()

8.     

9.     Restarttime

7.   else:

8.     Wait

9.   end

10.end