摘要
现有的定性评价存在主观性和随意性大的缺点 ,缺乏客观性和精确性 .云模型是一种定性与定量之间相互转换的有效工具 ,逆向云可以实现定量数值与定性概念的自然转换 ,从而得出一个用精确数值表示的定性概念 .该文分析并给出了逆向云发生器的具体算法 ,并对还原的各特征值进行了误差分析 .最后将该算法应用到射击评判上 ,评价结果不仅有射击准确度的评价 ,而且有运动员心理素质的分析 ,比仅仅用环数来评价一个运动员更准确。
Qualitative evaluation is more understandable and more profound than quantitative evaluation, however the former is less objective and precise. This paper presents a generator of backward cloud, which can transform quantitative values into qualitative concept, simultaneously, can produce qualitative evaluation denoted by precise number from objective data, embodying impersonality and precision. Cloud model is an effective tool in transforming between qualitative concepts and their quantitative expressions. The digital characteristics of cloud, expect value (Ex), entropy (En) and hyper-entropy (He), well integrate the fuzziness and randomness of linguistic concepts in a unified way. In this paper, we analyze cloud model and provide a detailed algorithm of backward cloud generator, then we do error analysis to each value generated by the algorithm, viz. Ex, En, He. Finally, an example of shooting evaluation demonstrates the effectivity and correctness of the algorithm, and the result shows this method is much better than ordinary ones.
出处
《计算机学报》
EI
CSCD
北大核心
2003年第8期1009-1014,共6页
Chinese Journal of Computers
基金
国家自然科学基金 (66975 0 2 4)
国家"九七三"重点基础研究发展规划项目 (G19980 3 0 5 0 84)资助
