基于改进VIKOR法的云计算环境下用户行为安全的评估研究

摘要

Cloud computing brings great convenience and reduces the cost to the cloud users for the use of resources.But it also makes it possible for illegal users to get core and privacy data easily.Therefore,the analysis and evaluation of user behavior is the key to effectively improve the security of the cloud.Firstly,according to the characteristics of user behavior under the environment of cloud computing,the evaluation index system was established.Then,an improved VIKOR method based on AHP-entropy weight method was proposed to overcome the shortcomings of subjective and objective weighting method.Finally,five users was selected for case analysis.Comparative analysis with other comprehensive evaluation methods shows that the proposed method is scientific and effective,and has some advantages.%云计算极大地方便了云端用户对资源的使用,降低了用户为使用存储资源耗费的成本,但也使用户的核心和隐私数据极有可能被非法用户利用,因此对用户行为进行分析评估是有效提升云安全的关键.首先,根据云计算环境下用户行为的特点,建立了评价指标体系;然后,提出了一种基于AHP-熵权法的改进VIKOR法的多属性决策方法,克服了主客观赋权法的缺点;最后,以5个用户为例进行算例分析,并将所提方法与其他综合评价方法进行了对比分析.结果表明,所提出的方法是科学、有效的,具有一定的优越性.