云计算区间量化VIKOR法安全评估

摘要

针对云计算的特点,将灰色关联度和区间数引入云计算安全性量化评估过程中,提出一个云计算安全性量化评估方法.基于区间数型的分数值,采用理想属性偏离度将不确定性问题转化为确定性问题;基于VIKOR方法,运用灰色理论构造灰色关联系数矩阵为新的决策矩阵,提出评估矩阵的改进方法,使之能够兼顾安全性评估的科学性和全面性.运用该方法对3个云计算方案的安全性进行量化评估,验证该方法的有效性,验证结果表明,使用该方法建立了获取最优权重的属性,兼顾了专家对云计算方案的偏好和客观的优选排序等两方面因素,是较为合理的云计算方案安全性量化评估方法.%According to the characteristics of cloud computing,a cloud computing security evaluation method was introduced.Grey relational grade and interval number was introduced in the cloud computing security evaluation process.Based on fractional values of interval number,the ideal property deviation was used to transfer the uncertain problem into certain one.Gray correlation coefficient matrix was constructed using grey theory for a new decision matrix.VIKOR method was introduced to propose improved method for evaluating matrix,enabling it to take scientific and comprehensive security assessment into account.By using this method to quantitatively evaluate the security of three cloud computing plans,the validity of the method was verified.Results of examples show that using this method can establish the property that obtaining the optimal weight,and the expert preferences on cloud computing and the objective preferential orders are both taken into account,which is a feasible and reasonable method for safety assessment of cloud computing.