utility function

基本解釋

It is possibleto develop the theory of consumer choice without supposing that a utility function exists at all.
即便不假設(shè)效用作用的存在，發(fā)展出關(guān)于消費(fèi)者的理論仍然是可能的。
In this type of learning, the goal is not to maximize a utility function, but simply to find similarities in the training data.
這類學(xué)習(xí)類型的目標(biāo)不是讓效用函數(shù)最大化，而是找到訓(xùn)練數(shù)據(jù)中的近似點(diǎn)。
At the outset, the decision-maker has a "utility function" or a "preference ordering" that ranks all sets of consequences from the most preferred to the least preferred.
在一開始，決策制定者就擁有一種“效用函數(shù)”或“偏好排序”把所有結(jié)果集合從最喜歡的到最不喜歡的排列起來。

But it's not a complete theory until we specify the utility function.
但我們還未詳細(xì)分析效應(yīng)函數(shù),這還不是完整的理論
耶魯公開課 - 金融市場課程節(jié)選
Of course, we will also be talking about behavioral finance in this course and we'll, at times, be saying that the utility function concept isn't always right-- the idea that people are actually maximizing expected utility might not be entirely accurate.
當(dāng)然我們還會,在這門課上討論行為金融學(xué),并且,我們會間或,討論到效用函數(shù)不總是正確的,人們希望最大化期望效用的觀點(diǎn),也許并不是完全準(zhǔn)確的
耶魯公開課 - 金融市場課程節(jié)選
The idea is that for any amount of money-- if this x is the amount of money that I receive-- utility as the function of the amount of money I receive is downwardly-concave.
這種觀點(diǎn)是對于任何數(shù)量的貨幣,假設(shè)我得到x數(shù)量的貨幣,隨著貨幣的增加,邊際效用呈,向下凹進(jìn)去的曲線
耶魯公開課 - 金融市場課程節(jié)選

No matter what the platform, function and utility, more than pretty and slick, is what works for consumers.
FORBES: Connect

a function relating specific goods and services in an economy to individual preferences

效用函數(shù)
Risk is independent of the utility function and relates to preference.
風(fēng)險(xiǎn)是獨(dú)立于效用函數(shù)與偏好相聯(lián)系的一個(gè)概念。
綜合效用
A utility function is established to evaluate the transportation models.
在此基礎(chǔ)上建立了不同時(shí)間價(jià)值和旅行距離下旅客對三種運(yùn)輸方式的綜合效用評價(jià)函數(shù)。
效益函數(shù)

效用函數(shù)
Lastly, we propose a QoS dynamic self-configuration method based on utility function.
最后,本文提出了基于效用函數(shù)的QoS動(dòng)態(tài)自配置方法。
效益函數(shù)
公用程式功能