一种虚拟服务资源的多分配任务的选择方法

在服务生态系统中，软件、硬件、人力资源乃至环境等虚拟资源的可用性是影响系统服务质量（OoS）的重要因素，所提供虚拟服务资源的波动性将影响用户对服务提供商的信任度．提出一种基于服务资源多分配任务的选择方法．该方法设置一个信任影响因子，在一定程度上对原有信任度进行变换，使其适应用户对资源需求的变化，并采用遗传算法对服务资源选择进行求解．最后通过实例分析验证了算法的可行性和有效性．

A selection method for assigning virtual service resources to multiple tasks

In service ecosystems, the availability of virtual service resources, such as software, hardware, human resource and environments,is a key factor to influence QoS of the service systems. The fluctua- tion of providing virtual service resources affects users＂ credibility to service resource providers. This pa- per proposes a selection method for assigning virtual service resources to multiple tasks. A trust factor is set up to transform the original trust to make it adapt to the change of＇request for virtual service re- sources,and genetic algorithm is used to solve the selection of service resources. Finally,a case study is presented to verify the effectiveness and feasibility of the algorithm.