任何一项选择的成本就是被选择所放弃的、价值排序最高的那一个主观价值。
The cost of any individual's choice is his subjective estimate of the value ranking of the highest value foregone from making his choice.
采用两层价值位置嵌套排序对CKS DEA模型依赖的价值排序结构给予了改进，并基于该嵌套排序结构提出了CKS DEA模型的改进模型。
Based on the ranking structure, the paper further presents a modified CKS DEA model and applies it to a real evaluation problem.
主题在财务服务或新闻发送应用程序中执行有价值的排序功能。
Topics perform a valuable sorting function in financial services or news delivery applications.
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