An Intrusion Detection Scheme Based on Repeated Game in Smart Home

Table 1

Notations definitions.

Notations	Definition
	The ith cluster head
	Attackers and intrusion detection systems’ strategy space
	The cost of attacking cluster heads
	The cost of attacking cluster heads after T times
	The cost of persistently protecting cluster heads
	The cost of protecting cluster heads after T times
	The payoff of attacking cluster heads
	The payoff of intrusion detection systems against attacks
M	The strategy matrices of attacker and intrusion detection system
X	Attackers’ payoff matrix
Y	Intrusion detection systems’ payoff matrix
	The cumulative payoff of player e
	The discount factor which measures how much players value future payoffs