Research Of Complex Network Risk Transmission Behavior Based On The Risk Transmission Path And Node

Today's information system is becoming more and more complex,and the network security is becoming more and more important,which is presenting new characteristics and trends.Complex information system network topology suffered actual attacks or level caused by its fault linkage mechanical behavior is the main performance of the complex dynamic security of information system,in view of this,this paper studies the current mainstream of the basic theories of information system security performance analysis,frameworks,models,commonly used evaluation methods and standards,and so on.On the basis of above,this paper study the information system network topology dynamics behavior of complex network,come up with the spread of the complex information system risk model,and analyze the complex information system security risk characteristics;For part of the information system network topology-node and path,study the complex information system based on node and path risk propagation model respectively,to make up most of the risk calculation method that does not take into consideration of the dynamic transmission network risk.In risk communication model based on node,in order to analyze the change of the state of nodes in network topology when the network is under attack or down,we put forward an algorithm based on node failure probability and risk communication between nodes based on node failure probability of the algorithm,and by giving the algorithm an example,through the analysis of the results verify the accuracy of the algorithm further.In risk communication model based on path,in order to analyze the state of the risk transmission path in a network topology changes when the network is under attack or down,we come up with risk propagation model with complex network based on path failure probability,through the product of probability matrix of failure path and weight matrix product,we can get the spread of the risk probability matrix,and through the analysis of the risk transmission probability matrix,we can make reasonable judgment of the path state and work results to guide the actual work of the network.