Risk Assessment and Vulnerable Path in Security Networks Based on Neyman-Pearson Criterion and Entropy

In this paper, the protection coverage area of a security system is considered. The protection coverage is determined by applying the protection model of security systems, which is brought forward according to Neyman-Pearson Criterion. The protection model can be used to define the protection probability on a grid-modeled field. The security systems deployed in a guard field are regarded abstractly as a diagram. On the basis of the entropy theory, we propose the risk entropy, which can be used to quantificationally evaluate the risk of arbitrary position in an area. Using a graph model for perimeter, we use Dijkstra's shortest path algorithm to find protection breach paths. The protection probability on the vulnerable path is considered as the risk measure of a security network. Furthermore, we study the effects of some parameters on the risk and the breach protection probability and present simulations. Ultimately, we can gain insight about the risk of a security network.