CAJ | 학술논문

云计算以服务的方式向用户提供资源,而随着用户需求的日益复杂,一个云服务提供商可能无法独立满足用户的请求,需要选择合适的云服务提供商进行合作。本文从可信的角度,首先分析论证了云服务提供商的历史评分服从狄利克雷分布；然后考虑到信任关系具有累积性,即便相同的评分也可能会有不同的累积效应,因此根据历史评分本身和历史评分之间的关系研究评分的累积效应并建立狄利克雷分布,并利用该分布计算云服务提供商的信任值和稳定性；最终基于信任值和稳定性提出一个云服务提供商选择算法并构建基于可信机制的云服务提供商选择(TSCP)模型。实验表明,TSCP模型具有一定的有效性。
운계산이복무적방식향용호제공자원,이수착용호수구적일익복잡,일개운복무제공상가능무법독립만족용호적청구,수요선택합괄적운복무제공상진행합작。본문종가신적각도,수선분석론증료운복무제공상적역사평분복종적리극뢰분포；연후고필도신임관계구유루적성,즉편상동적평분야가능회유불동적루적효응,인차근거역사평분본신화역사평분지간적관계연구평분적루적효응병건립적리극뢰분포,병이용해분포계산운복무제공상적신임치화은정성；최종기우신임치화은정성제출일개운복무제공상선택산법병구건기우가신궤제적운복무제공상선택(TSCP)모형。실험표명,TSCP모형구유일정적유효성。
Cloud computing provides users with resources as a service. With requirements of users increasingly complex, only one service provider may not be able to provide required resources. So it needs to choose an appropriate service pro-vider as a partner. From a trust perspective,we first analyse and apprase history score of the cloud service provider sub-ject to the Dirichlet distribution,then take into account the accumulates of trust relationship. We not only use the interac-tion scores itself,but also the relationship between the interaction scores to computer the trust value and stable value of cloud service providers, then we build a selecting model based on trust for cloud service providers. Ultimately they provide the basis for the choice of suitable partners. The experiments show that the model in this article is valid to some extent.