the sum of the values of a random variable divided by the number of values 同义词:arithmetic mean, first moment, expected value expectation例句 She ate a light lunch inexpectationof a good dinner. 她午饭吃得很少,期待晚饭时饱餐一顿。
3、Mathematical expectation is one of the important digital features of random variable. 数学期望是随机变量的重要数字特征之一。 4、The job failed to measure up to her expectations. 这项工作没有满足她的期望。 5、In the end you have to readjust your expectations. 最后你得调整你的期望值。
Let g(x) = E(Y |X = x). Then the conditional expectation of Y given X, denoted E(Y |X), is defined to be the random variable g(X). In other words, if after doing the experiment X crystallizes into x, then E(Y |X) crystallizes into g(x). 换言之,E(Y|X)事实上是一个关...
This chapter deals with the important concepts of random variables and expectation. When a random experiment is performed, the interest lies only in the value of some numerical quantity determined by the result. The quantities of interest th...
例句：The expectation of a random variable is its average value.（随机变量的期望值是它的平均值。）3.期望的结果：例句：The team had high expectations for the upcoming competition.（团队对即将到来的比赛寄予厚望。）4.文化和社会期望：例句：There are certain societal expectations regarding behavior in ...
expectation - the sum of the values of a random variable divided by the number of values arithmetic mean, expected value, first moment statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate pop...
The conditional expectation (or conditional expected value, or conditional mean) is the expected value of a random variable, computed with respect to a conditional probability distribution. A pragmatic approachAs in the case of the expected value, a completely rigorous definition of the conditional ...
theta_A=np.random.rand()theta_B=np.random.rand()# 观测值 observations=[1,0,1,1,0,0,1,0,1,1]#EM算法迭代过程for_inrange(10):#E步 hidden_vars=[]forobsinobservations:p_A=theta_A # 硬币A正面朝上的概率 p_B=theta_B # 硬币B正面朝上的概率 ...
For a random variablexon a probability space (Ω,P), the integral ofxwith respect to the probability measureP. (systems engineering) In decision theory, a measure of the value or utility expected to result from a given strategy, equal to the sum over states of nature of the product of th...
RegisterLog in Sign up with one click: Facebook Twitter Google Share on Facebook expected value (redirected fromExpectation (mathematics)) Thesaurus Financial Encyclopedia ex·pect·ed value (ĭk-spĕk′tĭd) n. 1.A quantity expressing a typical or average value of a random variable. ...