On the mean square error of the Smarandache LCM function;
关于Smarandache LCM函数的一类均方差问题
The target of this model is to minimize the sum of the weighted mean square error of all the indexes.
针对产品质量多指标优化问题,提出了综合多个质量指标的优化模型,该模型以各质量指标的加权均方差之和最小为目标,加权系数通过熵权系数法确定。
The objection function is defined as the mean square errors between the given digitized curve and the approximated polygonal.
首先对 3D数字曲线进行简单的数据压缩 通过对该曲线上的点列进行二进制编码定义来表示数字曲线的染色体 二进制串中的每一个位称为基因 ,每一个逼近多边形和染色体形成 1 1映射 目标函数使给定曲线和逼近多边形之间的均方差最小 构造了解决该问题的选择、交叉、变异三个算子 所得最优染色体中基因值为 1的基因对应数字曲线的分界点 实验结果表明 ,该方法能够得到精确的逼近结
The criterion is that the location with according to the maximal mean square deviation of the AE signals is the height level of fluidized bed.
利用颗粒运动碰撞壁面产生声波的机理以及声波信号随流化床高的规律性变化,根据料位处的声信号能量及声信号均方差均达到最大的状态,提出了声信号测定料位高度的判据,即声信号的均方差比达到最大时的床高即为料位高度。
The reason is that the formula of calculating mean square deviation .
研究发现其根本原因是回归分析中均方差计算公式不合适。
A linear relation is proved to exist between the average gas consumption and mean square deviation.
本文通过对运输车队每天油耗数据的收集整理 ,采用回归分析方法 ,得出运输车队平均油耗与均方差之间存在显著的线性关系 ,从而可考虑通过缩小一个车队油耗的均方差来降低平均油耗 ,达到节约用油提高经济效益的目的 。
Five major variances affecting the mean-square deviation of automatically reeled raw silk are derived from the formation of a batch of raw silk, i.
通过一档丝的形成，推导出影响自动缫生丝均方差的五项主要因素，即绪内方差、绪间方差、组间方差、车间间方差、天间方差，同时着重对后三种方差的形成进行分析，找出了减小这种方差的方法。
Based on the fact that testing times are limited in manufacturing of weapon systems,this paper introduces a method for verifying the mean-square deviation in experiments based on Grubbs.
针对武器装备研制过程中试验次数有限的情况,阐述了一种基于格拉布斯法的均方差指标校验方法,给出了一般计算步骤。
A new data processing method for white light interference spectrum based on the minimum mean-square deviation was proposed to overcome the poor anti-noise capability of extremum method.
为了克服用极值法从白光干涉谱数据求解光程差存在的抗噪声能力差的缺点,提出了一种基于均方差最小意义下新的处理方法。
Testing shows that the standard deviation of the reference voltage is 3 mV, the temperature coefficient is 20 ppm/ °C over -40~100 °C and the supply rejection ratio is 80 μV/V for 2 V to 3.
2V,实测结果表明,在不使用修正技术的情况下,基准电压值的均方差达3mV,温度系数(从-40°C～100°C)为20ppm/°C,电源抑制比(从2～3。
The monthly standard deviation of outgoing longwave radiation(OLR) was obtained in terms of the data around 75°S-75°N and 0°-360° in 1980-2001.
运用1980～2001年75°S～75°N,0°～360°向外长波辐射(OLR)资料,计算获得各月OLR的均方差。
By processing the standard deviation of test parameters,designing the resistance of the battery circuit,calculating the preliminary charging flow and further experiments revealed the correlation between the test res.
通过对测试参数均方差处理,蓄电池内阻测试电路设计以及初充电流估算和进一步实验,揭示了各测试结果与故障之间的关联度,验证了分析结论与实验结果的一致性。
unbias(s)ed variance
无偏方差, 均方差
ex post facto rms forecast error
事后均方根预测误差
root - mean - square error
均方根[有效值]误差
Interval Estimation of Mean Square Error for Linerar Statistic Model;
统计模型中误差方差的均方误差的区间估计
The method focuses on minimizing the ensemble mean square error of the estimation.
该方法可以估计的总体均方误差最小。
The variance is simply the average squared difference of all numbers from their mean or average value.
方差就是各个数的中值（或平均值）与各个数的差值的平方的平均值。
Channel equalization of orthogonal frequency division multi-plexing underwater communication based on linear minimum mean square error
OFDM水声通信线性最小均方误差算法信道均衡
Ensemble particle swarm algorithm based on mean squared error for adaptive equalization
基于均方误差的集粒子云自适应均衡算法(英文)
Simulation of the constant modulus blind equilibrium algorithm with variable step-size based on the mean square error
基于均方误差的变步长恒模盲均衡算法仿真
Returns covariance, the average of the products of paired deviations
返回协方差，即每对变量的偏差乘积的均值。
Returns covariance, the average of the products of deviations for each data point pair in two data sets
返回协方差，即每对变量的偏差乘积的均值
Averages, standard deviations, and variances are not supported when a PivotTable has calculated items.
在使用计算项时，不支持均值、标准差和方差计算。
Optimal Reinsurance under Standard Deviation Calculation Principle and Mean Square Error Risk Measure
标准差保费原理均方误差风险下的最优再保险
Detection of Differential Item Functioning Using the Mean and Covariance Structure Analysis Model
运用均数与协方差结构模型侦查项目功能差异
The results reveal that the combined forecasting model is more effective.
结果表明，此组合预测平均误差和预测平方根误差均较小。
linear-minimum-mean-square-error estimator
线性最小均方误差估计量
The Study on Mean-Variance Investment Problems in Incomplete Markets;
不完全市场中均值—方差投资问题研究
The Average Value-variance Model on the Basis of MATLAB and EXCEL Tool;
基于MATLAB与EXCEL工具的均值-方差模型