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先验概率未知时的多元Bayes判决Minimax方法

Minimax method in multi-hypothesis Bayesian decision when priori probabilities are unknown
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摘要 对于Bayes判决,需先知道各种假设的先验概率。当先验概率未知时,二元判决可用Minimax准则获得最坏先验概率时的Bayes判决。作者将这一结果推广到一般的多元Bayes判决中,给出了一般的多元Minimax方程组,并由此诱导出算法。数值例子显示本算法可行, For Bayesian decision, we must know priori probabilities. When the priori probabilities are unknown, the authors use minimax method to solve the binary decision. By extending this method to general multi-hypothesis decision, a group of minimax equations are derived, and corresponding algorithm to solve the minimax equations are presented. A numerical example shows the method and algorithm are efficient.
作者 何勇 朱允民
出处 《四川大学学报(自然科学版)》 CAS CSCD 北大核心 2009年第2期277-281,共5页 Journal of Sichuan University(Natural Science Edition)
关键词 Minimax准则 Bayes准则 多元判决 Minimax方程组 minimax rule Bayes rule multi-hypothesis decision minimax system
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