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(wàn)億分之一，也可以是數(shù)百萬(wàn)。
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(guò)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(kāi)發(fā)治理實(shí)踐能夠讓組織決定開(kāi)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(kāi)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(kāi)課 - 金融市場(chǎng)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(kāi)課 - 金融市場(chǎng)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(lái)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