首先给出em算法的抽象形式，然后研究EM参数估计方法的一个应用：求高斯混合密度的参数。
First we introduce the abstract form of the EM algorithm. Then we develop the EM parameter estimation procedure for one application: finding the parameters of a mixture of Gaussian densities.
这仍然只是一个默认的行为，但现在用户能够使用任何参数来替代密度设定。
This is still the default behavior, but you can now specify any parameter to override density.
采样速度和绘图密度是由samples和isosamples决定的，标题是由title参数为图形提供的。
The sampling rate and density of the plot are determined by samples and isosamples, and a title is provided for the graph with the title parameter.
超导体的转变温度和临界电流密度是两个经常要测量的参数。
A superconductor's transition temperature and critical current density are two commonly measured parameters.
分析了功率超声波对电化学抛光过程的促进作用及电流密度对抛光效果的影响，获得了较为合理的工艺参数。
The promotion effect of intensity ultrasonic wave on electropolishing process and the influence of ultrasonic wave on polishing quality were analyzed, and better processing parameters were obtained.
我们的画点画参数创造不同密度的噪音模拟的期待。
Our Stipple params create varying densities of noise to simulate that look.
通过水分特征曲线方程对试验数据的拟合，研究了拟合参数随干密度的变化情况。
A equation was used to fit the data of SWCC, and the relation between fitting parameters and dry density was studied.
林龄单因变量的蓄积量生长模型决定系数低，引入地位指数和密度指数再次参数化的生长模型可显著提高模型拟合度。
Single age variable stock volume growth model had low coefficient of determination, but it was improved a lot by introducing site index and stand density index in reparameterization.
本文推导了采用不同孔径参数的实验结果，以及波前斜率的功率谱密度。
The experimental results of the different aperture parameters and the power spectral density of wavefront slope are derived in the paper.
原始样品稀释过标准曲线上限的能力应用准确度和精密度参数在验证中证明。
The ability to dilute samples originally above the upper limit of the standard curve should be demonstrated by accuracy and precision parameters in the validation.
结果扫描参数，受检体的体积及密度均影响CT图像噪声。
Results Each of scanning parameter, volume and density affected the noise on ct imaging.
PD C切削齿尺寸、后倾角和布齿密度是影响PD C钻头性能的重要设计参数。
PDC cutter size, back rake and density are very important design parameters affecting the performance of PDC bit.
本文提出一种定量无损估计超薄弹性层声速、厚度和密度参数的低频超声波频域定征方法。
A frequency domain characterization method using low frequency ultrasound is put forward to estimate parameters of ultra thin elastic layers, such as: the sound velocity, thickness and density.
正态混合模型还可以用来对那些不能用标准的参数分布族来拟和的总体进行密度估计或近似。
The normal mixed distribution model can be used to get probability density or to simulate population which can not be fitted by standard parameters distribution classes.
展馆的初始参数包括其大小、选用的材料类型及其应用的密度。
The initial parameters of the pavilion included its size, type of material to be used and the density of its application.
根据三种经典的基于密度的交通流参数模型，分别推导了三种占有率速度模型和占有率流量模型。
In accordance with three classical traffic flow parameter models based on density, three kinds of occupancy-speed models and occupancy-flow models are deduced in this paper.
为此提出了一种从地震资料中提取地层密度参数的方法，以提高油气预测效果。
This paper presents a method that extract formation density from seismic data to improve the prediction effect for oil and gas.
并对制备过程中的压制压力、烧结温度和烧结时间等工艺参数对材料密度、硬度和组织的影响进行了研究。
We studied the effect of suppress pressure, sinter temperature and sinter times on density, hardness and structure of the materials in the course of preparation.
利用岩心分析、测井、地震、薄片分析等静态描述手段测试并计算了基质的孔隙度和渗透率，得到裂缝的宽度、密度和方位等参数。
The porosity and permeability of matrix, and the width, density and direction parameters of fractures were obtained by core analysis, well logging, seism and thin section observation methods.
以TNT为例进行了计算，给出了其爆轰波内压力、密度、流速和声速等参数的分布。
As an example, the distribution of the detonation pressure, density, particle and sound velocity along the detonation profile are given for TNT.
沉积岩的物性参数包括速度、密度和电阻率等，它们与孔隙度是有联系的。
Physical property parameters including velocity, density and resistivity have relations to the porosity of the sedimentary rock.
试验证明，试样台上的离子流密度及离子与中性粒子的比例是重要的试验参数。
The test proves that the density of ion flowing and the ratio of ions to neutral particles are important testing coefficients.
跳汰机床层某一位置的散密度、真密度、灰分、各密度级含量等床层参数之间存在着一定的相互关系。
At a specific layer of a jig bed, its parameters as bulk density, true density, ash content, and density fractions bear a certain relationship.
这还取决于，比方说，液体或气体的密度，分子的大小，它们改变了模拟程序中的参数，它们在一个时间单元内运行的距离，或者之类的。
And, depending upon, say the density of the gas or the liquid, the size of the molecules, they change parameters in the simulation, how far it, say, goes in each unit time and things like that.
磁流体密封压力主要由间隙的磁通密度决定，结构参数对密封压力也有影响。
The magnetic fluid sealing pressure is mainly related to the magnetic flux density of the magnetic gap, and also related to the structure.
给出确定利用最大熵原理建立的功能函数概率分布密度的待定参数时由高斯积分表达的离散化公式。
Discrete formulas expressed by Gauss-quadrature are presented when determine the parameter of probability density function which is established based on maximum entropy theory.
此外，还对密度曲线的极限状态作了深入研究，证明了当第二个参数趋于无穷大时密度曲线的变化具有一定的稳定性。
Besides, this paper studies the limit state of density curve deeply, proves a certain stability of the changes of density curve when the second parameter tends to infinitely great.
电流密度和能量密度是设计玻璃电熔炉最重要的参数之一。
Current density and energy density is one of the most important parameters for designing the glass electric melting furnace.
电流密度和能量密度是设计玻璃电熔炉最重要的参数之一。
Current density and energy density is one of the most important parameters for designing the glass electric melting furnace.
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