As a measure of risk, mean absolute deviation is better than variance in a sense. 作为度量风险的标准,绝对离差比方差更为合适。
Consequently, it is also necessary to estimate the forecast error, which may be represented by the standard deviation or the Mean Absolute Deviation ( MAD). 所以,评估库存预测的错误性也是很有必要的。其可用标准偏差或平均绝对偏差(MAD)来表示。
The results show that the predicted boiling points are in good agreement with the experimental data, and the mean relative deviation is 0.77% and absolute deviation is 3. 29K for 190 kinds of alkyl benzenes, alkyl biphenyls ( C6-C42). 对190种烷基苯和烷基联苯(C6~C42)的计算结果表明。
The mean and standard deviation of the m_ ( o(?) A Computing Method for Solving Mean-absolute Deviation Portfolio Selection Model 本法的m(o(?)均值绝对偏差资产组合选择模型的算法
The asymptotic properties of a mean absolute deviation 一类平均绝对离差的渐近性
Portfolio choice model based on mean absolute deviation and it's simulated annealing algorithm 绝对离差证券组合投资模型及其模拟退火算法
Comparative Study between Mean Absolute Deviation Model and Mean-Variance Portfolio Selection Model 绝对离差风险测度模型与均值方差模型的比较研究
A mean-Absolute Deviation Portfolio Selection Model in a frictional market 摩擦市场的均值-离差证券组合选择模型
In this paper, based on the approach of a trade off between mean and absolute deviation, we investigate the portfolio performances of 169 A stocks in Shanghai stock market. Methods: 1. We obtained hMSCs with discontinuous gradient centrifugation on Percoll. 本文基于均值&绝对偏差的折中方法探讨了上海股票市场169种股票的投资组合分析,得到了一些有益的启示和结论。
The mean absolute deviation of the calculation results by this method from the experiment data was 14.9%. 该算法的预测值与实验数据相比,其平均绝对偏差为14.9%。
The empirical result shows that the absolute values of risk elasticity are more than 1 under various returns and it also indicates that the proposed model based on mean absolute deviation is better than mean variance model based on variance both in theory and in practice. 实证分析表明,在不同收益率水平下,风险弹性的绝对值都大于1.说明绝对离差模型比均值-方差模型无论在理论上还是在实际效果上都要更好。
The model uses mean absolute deviation of return as measure of the risk and gains a optimal portfolio by solving the linear programming. 该模型采用收益的平均绝对离差作为风险的尺度,可以通过求解线性规划获得最优证券投资组合。
Entropy, standard deviation, mean absolute deviation of the PD gray images are extracted and the acquired characteristics are analyzed for five types of discharge pattern recognition. 研究了根据局部放电灰度图像光谱特征提取熵、标准差和平均绝对误差等三个统计特征的方法,对五类放电图像的统计特征计算结果进行了分析;