...式很容易扩展到随机变量(random variable),这时事件的概率应该变成是随机 变量的概率密度函数 均值和方差(mean and variance) x p 是随机变量x的概率密度函数 模式识别导论 武汉大学遥感信息工程学院 马洪超 它的均值和方差分别定义为 ...
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sample mean and variance 样本平均值与方差
Mean and Variance Normalization 均值方差规整
block mean and variance 块的平均和方差
Cepstral mean and variance normalization 和倒谱均值方差规整 ; 正规化法
Mean and Variance Normal ization 均值方差规整
the mean and variance 均值和方差
mean and variance shifts 均值方差的漂移
pooling mean and variance 合并均值与方差
possibilistic mean and variance 可能性均值和方差
We simulate the stochastic cycle time and get its mean and variance.
我们模拟随机的周期时间,得到平均值以及变异数。
Populations, random samples. Sample statistics, moments of the sample mean and variance.
母体, 随机样本。 样本统计, 样本平均数和变异数的动差。
Finally, it employs the mean and variance projection functions to validate retrenched eyes in order to precisely locate them.
最后用投影法对精简后的眼睛对进行验证,从而达到眼睛对精确定位的目的。
In fact, I have it--suppose we have three assets and we want to compute the efficient portfolio frontier, the mean and variance of the portfolio.
事实上,假如我们拥有三种资产,我们想计算有效边界,及投资组合的均值和方差。
But, in between, if some other number, it'll be some blend of the--mean and variance of--the portfolio will be some blend of the mean and variance of the two assets.
但如果是在0和1之间的其他数值,这个投资组合的均值和方差将会是,两项资产各自的均值和方差的综合结果。
What we want to do now is compute the mean and variance of the portfolio-- or the mean and standard deviation, since standard deviation is the square root of the variance-- for different combinations of the portfolios.
我们现在要做的是,计算这个投资组合的均值和方差-,或者均值和标准差,因为标准差的平方就等于方差-,这对任何投资组合都是一样的。
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