基于云模型与模糊综合评判的系统效能评估研究

Research on System Effectiveness Evaluation Based on Cloud Model and Fuzzy Comprehensive Evaluation

模糊综合评判法在处理多因素、多层次复杂评估问题时具有独特的优势,但同时也存在一定不足,即评估结果单一、忽略数据固有的模糊性和随机性,云模型理论正好弥补了模糊综合评判法的不足。通过研究云模型和模糊综合评判的算法模型,取长补短,优势互补,提出了云模型与模糊综合评判联合评估系统效能的方法。以模糊综合评判法为基础,利用云模型代替隶属函数,从而实现对系统的评估,其评估结果为云模型,比单一结果值提供了更为丰富的评判信息,同时也保留了数据的模糊性和随机性,提高了评估结论的科学性和全面性。

The fuzzy comprehensive evaluation method has unique advantages in dealing with multi-factor and multi-level complex assessment,but also a certain deficiencies, such as single evaluation result and ignoring the inherent fuzziness and the randomness of data.The cloud model theory is just made up for the inadequacy of fuzzy comprehensive evaluation method.By studying the cloud model and algorithm model of fuzzy comprehensive evaluation, based on their advantages, this paper puts forward a system effectiveness evalua- tion method by combining cloud model and fuzzy comprehensive evaluation.On the basis of fuzzy comprehensive evaluation method,this method uses cloud model to replace membership function for system evaluation implementation. The evaluation result is cloud model, which provides more evaluation information,keeps the fuzziness and randomness of data and improves the scientificity and comprehen- siveness of evaluation conclusion.