A random variable is a function that takes values based on a probability distribution.
随机变量是一个根据概率分布取值的函数。
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.
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。
First we compare rough sets and random sets, and derive the relationship between belief function and lower probability.
首先将粗糙集与随机集作了比较，并由此得出了信任函数与下概率的关系。
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.
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。
By comparing rough sets and random sets, we derive the relation between belief function and lower probability.
首先将粗糙集与随机集作了比较，并由此得出了信任函数与下概率的关系。
The probability density function of partial strain loading of product is defined in accordance with the relevant theory of random vibration test.
根据随机振动试验的有关理论，确定产品局部应变载荷的概率密度函数。
The safe probability of ship navigation in random beam wave is studied by the probability density function.
应用概率密度函数研究随机横浪中船舶航行的安全概率。
Then, three safety modeling methods of human-machine system are introduced: probability logic method, Markov process method and random parameter function method.
然后介绍了用于人机一体化系统安全性建模的三种数据方法：概率逻辑法、马尔柯夫过程法和随即参数函数法。
The result showed that the root-mean-square of Phase function fitted by random probability sampling method is smaller.
结果显示随机概率抽样方法拟合的相函数与散射相函数间的方均根差更小。
When the probability density function of the random series is unknown, the order of the model and the unknown parameters are estimated to make possible the solution for an actual case.
在不知道随机序列的概率密度函数的情况下估计出模型阶次及未知参数，使实际问题的解决成为可能；
In this paper, multidimensional probability model of random fatigue failure was established and the random simulating formula of failure distribution function was deduced.
本文建立随机疲劳失效的多维概率模型。论述推导机械零件疲劳失效分布的随机模拟公式。
In this paper, the analysis model of structural fuzzy-random reliability of considering human error probability possibility distribution function is derived.
由此给出了人误概率的可能性分布函数，建立了基于人误概率可能性分布的结构模糊随机可靠度分析模型。
For continuous random variables the area under the probability density function corresponds to probability...
连续随机变量下的面积概率密度函数对应的概率。
Through the probability density evolution method, the instantaneous probability density function of response of double random vibration systems is numerically obtained.
将股市上扬的天数转化为随机游程的长度，利用密度演化方法求得了股市上扬天数的分布以及均值和方差。
By using stochastic average method, the probability distribution function of the rolling amplitude of a ship with S-type static curves in random waves was put fowavd.
本文应用随机平均法，提出了用5阶多项式表示稳性曲线的非线性横摇运动的统计分布。
By using stochastic average method, the probability distribution function of the rolling amplitude of a ship with S-type static curves in random waves was put fowavd.
本文应用随机平均法，提出了用5阶多项式表示稳性曲线的非线性横摇运动的统计分布。
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