Simulated Cloud Service QoS Dataset

The dataset used for this simulation experiments were based on SMI attributes. The data values were synthesised based on examples from previous evaluation studies and related papers on cloud service selection that revealed acceptable data formats for quantitative attributes such as response time, cost, and availability. We generated random qualifier values for the other qualitative attributes, which are usability, security, and flexibility. Consequently, we used a total of six QoS attributes. For simplicity, we limited the qualifier values for usability, security, and flexibility to high, medium and low. We simulated multiple instances of the adopted format for the six attributes in order to obtain a dataset comprising a total of 63 services.本仿真实验所使用的数据集基于SMI属性（SMI attributes）构建。数据集的数值基于过往云服务选择领域的评估研究与相关论文中的示例合成，这些文献明确了响应时间、成本、可用性等量化属性的合规数据格式。针对可用性、安全性与灵活性三类定性属性，我们生成了随机限定值。因此，本次实验共采用了6个服务质量（Quality of Service, QoS）属性。为简化实验流程，我们将可用性、安全性与灵活性的限定值范围限定为高、中、低三档。我们针对这6个属性的既定格式生成多组实例，最终得到了包含63项服务的完整数据集。