variance of distribution
英 [ˈveəriəns ɒv ˌdɪstrɪˈbjuːʃn]
美 [ˈveriəns əv ˌdɪstrɪˈbjuːʃn]
分布方差
双语例句
- The practice showed that this method was simply practical and overcome the variance of load distribution.
实践证明，该方法简单易行，解决了控制系统中负荷分配不均的问题。 - This article tells us how to use probability generating function to find the expectation and variance of super geometry distribution.
运用概率论知识对索赔总额服从几何分布模型导出了最终破产概率的表达式，并得到其渐进估计。 - Reliability index is influenced by the variance of basic parameters, resistance distribution, and ratio of live load to dead load.
可靠指标与极限状态方程中的各基本变量的变异性、抗力的概型分布、以及活荷恒荷效应比有关。 - It is suggested also that the extracting periodic terms are regarded as the influence factor in the error motion, and the mean& value and variance of Rayleigh distribution as the evaluating the rotation accuracy of shafting.
并建议将提取的周期函数项作为诊断影响精度的因素，而以瑞利分布的均值和方差来评价轴系回转轴心漂移的平均距离。 - The cause is that the unit weight estimation variance and the generality variance of the distribution don't equal with each other.
产生的原因在于单位权方差与分布的总体方差不相等。 - After analyzing variance coefficients and features of surface distribution for all elements, it finds that the abundance distribution of all major elements and rare earth elements from Changjiang Estuary and its adjacent sea area are more mean than others.
对多元素进行变异系数和含量平面分布特征分析后，得出长江口及其邻近海域表层沉积物中的常量元素和稀土元素的分布相对较为均匀，受温度、盐度等环境因素的影响较小； - This paper gives the probability nature of multivariate normal distribution and distribution. Also discussed is how to test variance of 2-dimensional normal distribution.
给出了多维正态分布与x~2分布的概率性质，讨论了在小样本检验中如何检验同方差的二维正态分布的方差问题。 - Density weighted distance based FCM neuroid caters for variance of different data in general distribution and after suitable selection of density distribution function, it makes contribution to constraining the influence of stray specimen with larger error on neuroid's learning.
基于密度加权距离的FCM神经元网络适应了不同数据对总体分布的差异性，在适当选择密度分布函数以后可抑制误差比较大的离群样本对神经元网络的学习的影响，提高了系统学习的正确率。 - Minimax estimation of the variance of a normal distribution when parameter space is restricted
正态分布方差在限制参数空间中的极小极大估计 - Conclusion An apparent multi-joints coordination was employed to compensate the variance of mass distribution due to the loading on the back.
结论为了有效补偿由于背部负重所引起的总质心变化，人体利用多关节协调运动来进行补偿。 - And finally, this tool-the generating function-can be used to get some expectation and variance of random variable of continual-type non-negative distribution.
最后利用母函数这一工具求得一些连续型非负分布随机变量的数学期望及方差。 - Influence of the Variance of Water Depth on the Joint Distribution of the Wave Heights and Periods
水深变化对波高与周期联合概率密度分布影响的分析 - Empirical analysis of hypothesis of market efficiency always is tested by random walk, coefficiency and ARCH class models. ARCH class models can expose conditional time varying variance, clustering and fat tail of distribution of high frequency financial time series.
资本市场有效性假说的实证分析主要有随机游走检验、相关性检验和ARCH类模型检验，而ARCH类模型较好地揭示高频金融时间序列的条件方差时变性、波动集束和宽尾分布现象。 - Hypothesis testing for variance change-point of normal distribution when the mean known
均值已知时，正态分布方差变点的假设检验 - Researching on the means, variance and distributing function of mixture distribution, the formula for the ARL of EWMA in the mixture distribution sample space S is given.
在研究混合分布的均值、方差和密度函数的基础上，推导了基于混合分布样本空间S的EWMA控制图平均运行链长（ARL）公式； - The mode of the distribution was found to be mainly related with the control sample size while the variance of the distribution largely determined by the case sample size.
而分布的方差则主要取决于患病者样本量大小。 - A new method for the expectation and variance of super geometry distribution
超几何分布的期望和方差的一种新求法 - For each p, the variance of bounded distribution increased with the distribution's boundary, the variance of P-norm distribution is the supreme of the bounded distribution.
对每一p，有界分布的方差随有界分布的边界单调增加，以P-范分布的方差作为上界。 - Study on Minimum Length of Confidence Interval for Variance of Normal Distribution
正态总体方差最短置信区间的研究 - Experimental results show that within the range of R_a 2.2 μ m, there is a good correlation between the variance(σ) of scattered light distribution and the standardized roughness parameter R_a.
实验结果表明，在Ra≤2.2μm的范围内，远场归一化散射光分布的标准偏差（σ）与标准粗糙度参数Ra之间有很好的相关关系。 - The Uniformly Minimum Variance Unbiased Estimator of the Parameter in Negative Binomial Distribution and Its Asymptotic Efficiency
负二项分布参数的UMVU估计及其渐近有效性 - The highly significant b was mainly caused by the variance of asymmetry of gene distribution ( b_2) and gene interaction effect of some crosses ( b_3), the direct heterosis ( b_1) was not significant.
其中b极显著主要是基因分布不对称方差（b2）和个别组合的基因互作（b3）所引起，二者的直接杂种优势（b1）均不显著。 - A Calculation of Variance of the Approximate Distribution of an Instrumental Variable Estimator of the Parameter
参数仪器变量估计近似分布方差的一种算法 - In this paper, we concretely design a fixed-width confidence interval for the variance σ 2 of a normal distribution N(μ,σ 2) by two-stage procedures and provide the optimal sample size of the first stage by numerical computations.
利用两阶段抽样，我们具体给出了正态总体方差的一个置信区间，它同时满足可靠度与精度，利用数值计算的方法，我们计算出第一阶段的最优抽样量。 - Some valuable statistical parameters, such as the mean length and variance of the dry-wet spell, the mean length and variance of the dry-wet cycle and the limit distribution probability of the dry-wet day evolution, are calculated.
文中计算了各站干湿日游程的平均长度和方差、干湿周期的平均长度和方差、干湿日演变的极限分布概率等统计参数，所得结果较好地反映了我国季风气候所特有的干湿特征。 - We wish extend the theory of multiple mean variance ratio test to the sample of any distribution family and more multiple mean variance ratio test, in order to obtain the evaluation of more performance of portfolio.
希望在以后的研究中将多元均值方差比检验扩充到适合非正态分布和更多元均值方差比的检验，来获得更多的投资组合表现的评价。 - On the contrary, when the ratio of neutrals to ions and the variance of Gaussion distribution increase, the groove becomes shallow.
中性粒子和离子数的比率越大以及高斯分布的方差越大，刻蚀深度越浅。 - The paper proposed the method that used Variance as parameter to evaluate the uniformity of energy distribution, and used the analysis methods of the energy balance as the main and the mode as secondary to analyze the weak links of machine tools.
提出了用均方差为参数来评价机床能量分布均匀度的方法，并以能量平衡为主、振型分析为辅的分析方法对机床进行薄弱环节分析。 - In addition, based on moving the seismic window, it is to calculate the variance of subsection which is the distribution of wave impedance.
此外，在地震分层的基础上通过窗口移动的办法，求取分段的方差，即波阻抗可能的分布范围。