In this paper

an intrusion response decision-making model based on the risk evaluation is proposed to improve the routing performance in hierarchical Ad Hoc networks.In this model

the attack behaviors were in clustering analyzing according to self-organizing map

and the risk degree was calculated in real time and quantity

in order to evaluate the threaten extent of the current attack.Combined with the related information such as the node statue

we could forecast the sustainable extent and scale of the attack

and thereby adopt the relevant decision-making to the attack node.Simulation results show that

the model proposed in this paper can real-time quantize the intimidation that hierarchical Ad Hoc networks meet

and alleviate and even contain the network harm caused by the routing attacks.