一种决策成功的概率

The Probability of a Successful Decision

在 n 个逐个出现的随机数据α1,α2,…,αn 中选取某个数据,求该数据为最优值的概率.设计的决策程序是:对前 r*-1个数据不认为有最优值,当出现相对最优值αi（r*≤i≤n）决策取αi 为最优值,则求得决策成功（取到最优值）的概率。

When n random data a_1,a_2,…,a_n come one after another,we select someone datum and calculate its probability under optimal value.The decision procedure is as follows:Provided former(r-1)data known and a_i(r≤i≤n)is a relative optimal value,let we affirm a_t to be the optimal value.The probability with a_i of optimal value assuredly is given.