expected value

基本解释

Depending on what the expected value is, that could be trillionths or it could be millions.
根据期望值不同，这个值可以是万亿分之一，也可以是数百万。
Since the expected value at the selected path in the filter condition is only decided during execution, it needs to be defined as a variable.
由于过滤条件中选定的路径上的预期值是在执行时才确定的，因此需要将它定义为一个变量。
Good development governance practices enable organizations to determine the extent to which development investments deliver on their expected value.
好的开发治理实践能够让组织决定开发投资对其预期值的交付程度。

Even if the expected value is the same, they'd move around a lot.
即使股票的价格是一样的，但是它们的价格经历很多改变。
麻省理工公开课 - 计算机科学及编程导论课程节选
Another important concept in probability theory that we will use a lot is expected value, the mean, or average-- those are all roughly interchangeable concepts.
概率论中另外一个常用的重要的概念是,期望值或者也叫均值,这两个概念可以互换
耶鲁公开课 - 金融市场课程节选
Expected value is good and variance is bad because that's risk; that's uncertainty.
期望值越高越好,方差就相反,因为方差代表着风险,也就是不确定性
耶鲁公开课 - 金融市场课程节选

No other large cap stock comes close to positive expected value on any form of investment — direct stock purchase, options, combinations.
FORBES: Is Apple's Stock Really As Cheap As They Say?

the sum or integral of all possible values of a random variable, or any given function of it, multiplied by the respective probabilities of the values of the variable. Symbol: E(X). E(X) is the mean of the distribution E(Xc) = E(X)c where c is a constant (Also called mathematical expectation)

期望值
In this thesis, Binary PSO has been analyzed through bit change rate, velocity expected value and genetic algorithm pattern theory.
本文从位改变率、速度的期望值及遗传算法模式概念等三个方面对其进行分析。本文得到:二进制PSO算法不收敛于群体最优粒子,其位值随着迭代运行而越来越随机。
电子、通信与自动控制技术
指望值
希望值
期望值