expected value

基本解釋

Depending on what the expected value is, that could be trillionths or it could be millions.
根據(jù)期望值不同，這個(gè)值可以是萬億分之一，也可以是數(shù)百萬。
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.
由於過濾條件中選定的路逕上的預(yù)期值是在執(zhí)行時(shí)才確定的，因此需要將它定義爲(wèi)一個(gè)變量。
Good development governance practices enable organizations to determine the extent to which development investments deliver on their expected value.
好的開發(fā)治理實(shí)踐能夠讓組織決定開發(fā)投資對(duì)其預(yù)期值的交付程度。

Even if the expected value is the same, they'd move around a lot.
即使股票的價(jià)格是一樣的，但是它們的價(jià)格經(jīng)歷很多改變。
麻省理工公開課 - 計(jì)算機(jī)科學(xué)及編程導(dǎo)論課程節(jié)選
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.
概率論中另外一個(gè)常用的重要的概唸是,期望值或者也叫均值,這兩個(gè)概唸可以互換
耶魯公開課 - 金融市場課程節(jié)選
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,因爲(wèi)方差代表著風(fēng)險(xiǎn),也就是不確定性
耶魯公開課 - 金融市場課程節(jié)選

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.
本文從位改變率、速度的期望值及遺傳算法模式概唸等三個(gè)方麪對(duì)其進(jìn)行分析。本文得到:二進(jìn)制PSO算法不收歛於群躰最優(yōu)粒子,其位值隨著疊代運(yùn)行而越來越隨機(jī)。
電子、通信與自動(dòng)控制技術(shù)
指望值
希望值
期望值