方差是描述随机变量分布情况的指标，本文用方差来描述特征词在类间的分布情况。
Variance is an index that can describe distribution of random variables, and is used to describe inter-category distribution of feature term .
本文对随机变量分布函数两种不同定义进行了比较，指出了不同定义的分布函数其性质上的差异。
This article the compares the two kinds of different definitions of random variable distribution function and shows nature differences of distribution function in different definitions.
利用室内测试数据，对随机变量进行统计分析，得到其数字特征，进而得到服从随机变量分布的随机数。
According to the data of test, the numeral characteristics of variables are acquired by statistic analysis, and then random Numbers which are as same distribution as the variables are generated.
我们经常在金融学中假设随机变量，比如回报，是正态分布的。
We often assume in finance that random variables, such as returns, are normally distributed.
金融学中我们常假设随机变量,例如收益率,是服从正态分布的
We often assume in finance that random variables, such as returns,are normally distributed.
随机变量是一个根据概率分布取值的函数。
A random variable is a function that takes values based on a probability distribution.
取代单个值，随机变量拥有描述估计值可能性的函数，该函数称为变量的概率分布。
Instead of this single value, a random variable has a function that describes the likelihood of values for the estimate and is called the variable's probability distribution.
3对于许多随机变量来说，一个好的选择是正态分布，常常表现为一个钟型曲线，如图1所示。
3 For many random variables, a good choice is the normal distribution, often represented as a bell-shaped curve, shown in Figure 1.
是x的连续型随机变量的概率分布。
求随机变量函数的分布是概率论中的一个重要课题，无论是在理论还是在应用上都有着十分重要的意义。
Solving the distribution of random variable function which is of great significance whether in theory or in application is an important question in probability theory.
奇异函数是一极为重要的奇异型随机变量的分布函数，被广泛研究。
Singular function is an important distribution function of the singular random variable. It is studied widely.
本文研究了离散型随机变量次序统计量的分布矩阵的对称性，获得了二个定理。
In this paper, we study the symmetry on distribution matrix of order statistic of discrete type random variable.
本文论述了离散型随机变量的次序统计量的分布律及其有关推论。
In this paper, we study the distribution law of order statistic of discrete type random variable.
随机变量的分布函数及其反函数在概率论中占有重要地位。
Random variable distribution functions and their inverse functions take an important role in probability theory.
本文研究了离散型随机变量次序统计量的分布矩阵的对称性，获得了二个定理。
In this paper, we study the symmetry on distribution matrix of order statistic of discrete type random variable. Therefore, we obtain two theorems.
对于功能函数中含有模糊分布参数(FDP)的随机变量问题，如何准确且简便地评估其可靠性，是十分重要的。
For a problem with performance functions which include random variables with fuzzy distribution parameters (FDP), it is important to evaluate their reliability accurately and rapidly.
本文提出了类条件概率密度随机变量（特征）空间离散化及类条件概率分布估计方法。
A discrete method for stochastic variable (features) space of class-conditional-probability density and estimation method for class-conditional -probability distribution is proposed.
轨道几何不平顺为平稳的正态分布和各态历经的随机变量。
The track geometry irregularity is a stable normal distribution and state-history random variable.
未来时间机组可用率和预测负荷不确定性等因素导致电价是一个随机变量，因此，从概率角度考察电力市场中的电价分布规律是合理、必要的。
It is reasonable and necessary to acquire the rational price distribution pattern, because the price is a random variable due to the uncertainty of load forecast in the future.
设为随机变量序列，文章在较弱的混合速度且非同分布的条件下证明了其完全收敛性的一个结果。
Let be a -mixing random variable sequence, and it is proved to be a theorem of complete convergence under the condition of slow mixing speed and non-identity distribution.
当单调函数的反函数不能显性表示时，连续型随机变量的分布密度曲线仍可通过参数方程的形式获得。
When a inverse function of monotone function can not show the explicit formula, the distribution density curve of continuous randon variable can be gained with a parametric equation.
本文章主要介绍二维曲线型随机变量及其分布。
This paper contributes to the discussion of the two dimension curve random variable and the distribution.
随机变量的极值分布可以通过对水位监测数据进行频谱分析获得。
The extremum distribution of stochastic variable can be obtained by spectral analysis.
论文通过分析船公司在港口的月集装箱需求量得出其在港口的年集装箱需求量是一个符合正态分布的随机变量。
This essay deduces that the demanded container number in one port in a year is a normal school stochastic variable by analyzing the data.
针对换热器的失效分析，考虑几种主要参数的不确定性和随机性，应用蒙特卡罗模拟法抽样计算了服从某种特定分布的随机变量。
Through failure analysis of heat exchangers and in consideration of uncertainty and randomness of several main parameters, the random variables are calculated by Mote-Carlo modeling.
本文推导了两个正态随机变量商的分布，并着重讨论了它在环境因子分析中的应用，给出了实例。
In this paper, the distribution of quotient of normal variable was derived, its application in analysis of environment factors was emphatically discussed, and an example was given.
并且将它推广到任意具有可数无限分布列的离散型随机变量和随机向量。
That could be extended to all discrete random variable and vector with the infinited countable distribution series.
将未来现金流量视为具有一定概率分布、且概率随时间而转移的随机变量更为恰当，但对这方面的研究却鲜有介绍。
It is more reasonable to regard future cash flow as random variable which has certain probability distribution, which shifts with time.
按照给定的分布，这一随机变量能由(0,1)均匀分布的随机变量加以变换得到。
This random variable can be derived from a (0, 1) uniformly distributed random variable according to a given distribution.
按照给定的分布，这一随机变量能由(0,1)均匀分布的随机变量加以变换得到。
This random variable can be derived from a (0, 1) uniformly distributed random variable according to a given distribution.
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