<p class="Abstract" style="margin: 0cm 0cm 0pt; layout-grid-mode: char;"><span style="font-size: x-small;"><span style="font-family: Times New Roman;"><span style="mso-bidi-font-size: 9.0pt;" lang="EN-US">with the rapid development of industrialization, security situation becomes more and more serious in China. Many cities have established crime prevention systems in order to maintain social stability. With the number of crime prevention system increasing, we</span><span style="mso-fareast-language: ZH-CN; mso-bidi-font-size: 9.0pt;" lang="EN-US"> </span><span style="mso-bidi-font-size: 9.0pt;" lang="EN-US">need to assess their effectiveness in a scientific and objective manner</span><span style="mso-fareast-language: ZH-CN; mso-bidi-font-size: 9.0pt;" lang="EN-US"> and establishes a risk optimization model on crime prevention system.</span><span lang="EN-US"> </span><span style="mso-fareast-language: ZH-CN; mso-bidi-font-size: 9.0pt;" lang="EN-US">In this paper, we first apply the Analytic Hierarchy Process and Fuzzy Comprehensive Evaluation methods in the model analysis.</span><span lang="EN-US"> </span><span style="mso-fareast-language: ZH-CN; mso-bidi-font-size: 9.0pt;" lang="EN-US">We not only solve the problem of interference on subject factors in traditional qualitative method for crime prevention system, but also improve the assessment objectively. In the next stage, we conduct the simulation experiment according to the specific examples of crime prevention system. The case study shows that the assessment results are consistent with the reality and this method can be reasonably used for the effectiveness evaluation of crime prevention system. Finally, combinatorial optimization technology is used to calculate the risk optimization model and a concrete example is given out to verify the model reasonably.</span><span lang="EN-US"> </span><span style="mso-fareast-language: ZH-CN; mso-bidi-font-size: 9.0pt;" lang="EN-US">We believe this work contributes to the theoretical framework guiding the design, development, and deployment of the crime prevention system. </span></span></span></p>
