Fed-Fi: Federated Learning Malicious Model Detection Method Based on Feature Importance

Algorithm 2

Fed-Fi.

	Client operation:
	//Model training
	if client k is sybil then:
	else:
	for each local epoch from 1 to E do：
	for batch do
	end for
	return
	Server operation:
	//Feature selection
	//Similarity contrast
	for all clients do:
	end for
	//Model aggregation