utility expect

• 期望效用

utility expect的用法和样例：

例句

1. Under the assumption that investor is averse to risk and the criterion of expected utility maximum, the calculated formula of the optimum ratio of portfolio investment is given.
   文章最后针对绝对风险回避者，在期望效用最大的意义下，给出了组合证券投资的最优比例的计算公式。