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- probability density operator 概率密度算符
- Since it is the probability density, it must be single-valued. 因为它是几率密度，因此必须是单值的。
- We get a buildup of electronic probability density between the nuclei. 我们得到在两个核间的电子几率密度的堆积。
- Sample Percentage Presentation of Joint Probability Density of Two Random Variables. 二维随机变数联合机率密度之取样百分比。
- The analytic solutions of the probability density of the steady-state responses of Coulomb sliding systems with gradually strong springs to Gaussian white noise are derived. 利用等效线性化方法推导了具有渐硬非线性复位弹簧的滑动系统的高斯白噪声激励稳态随机响应概率分布的解析解。
- If cumulative is TRUE, EXPONDIST returns the cumulative distribution function; if FALSE, it returns the probability density function. 如果cumulative为TRUE,函数EXPONDIST返回累积分布函数;如果cumulative为FALSE,返回概率密度函数。
- In this paper, the method of generating random number with given probability density function is proposed by using vertical density representation. 摘要本文首先介绍基于垂直概率密度表示的，给定密度函数的随机数生成的通用方法；
- The structure of PMN is a four layer feedforward neural networks(FNN), where the Gaussian probability density function is realized as an internal node. PMN网为一个四层前馈网，它构成一个贝叶斯分类器，实现多类分类的贝叶斯判别，把输入的说话人语音数据模型参数通过网络变换为输出的说话人判定。
- Based on the diffusion equation, the transition probability density of stock prices is calculated by means of the Monte-Carlo method. 摘要在扩散方程对股价运行描述的基础上，用蒙特卡罗方法得出未来某一时刻股价转移概率密度的数值解。
- For the accident assessment probability density function can be used to solve the uncertainties of estimation of the source intensities. 应用几率密度函数可解决事故预测时源强估算的不确定性问题。
- The binned kernel density estimators were exploited to estimate the probability density function of background intensity in training sequence. 该模型采用分箱核密度估计算法从训练图像序列中得到背景的密度函数。
- Based on probability density approximation, a novel unsupervised feature ranking approach was proposed and could be applied to feature selection. 摘要依据概率密度逼近提出了一种新的无监督特征排序，应用于特征选择降维。
- Weibull probability density function (pdf) is used to describe the diameter of breast height (dbh) distribution for stand structure. 以韦伯机率密度函数来描述直径分布，表示其林分结构，性态值分布状况。
- However, the better such a representation, the higher its dimensionality, the more difficult it is to estimate a probability density function. 然而，这种表示方法表示得越全面，所需要的维数就越高，估计概率密度函数也就越困难。
- According to the properties for convolution of transformation of Laplace, this paper gives a simple and easy Laplace solution for probability density of Z=X+Y in some case. 本文根据拉氏变换的卷积性质 ,给出了某些情形下 ,随机变量 Z=X+Y概率密度的一种简易的拉氏解法
- From this expression, the Peak Probability Density Function (PDF)of echoes in the time gate is conducted by using statistical theory, and has been strong proved by field data. 然后从该式出发,应用统计学原理导出了在整个取样门持续时间内,回波峰值的概率密度函数(PDF),并给出和讨论了现场的骓证结果。
- By employing the modified probability density function of Cox and Munk’s, and Pierson’s empirical sea spectrum , the bistatic scattering coefficient of sea surfaces is derived . 利用半经验的Pierson海洋波高谱以及修正的Cox和Munk大尺度坡度分布的概率密度函数，推导了白帽泡沫覆盖的随机双尺度粗糙海面的双站散射系数。
- Besides, with the Hamiltonian of the interaction between the field and the atom with Kerr medium, the evolution operator and the reduced density operator of the field are derived, then the other basic work model is obtained. 其次，从光场与原子附加克尔介质相互作用哈密顿量出发，得出非线性J-C模型系统的一般时间演化算符和光场的约化密度算符，得出了本文的基本工作模型之二。
