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) ( 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)(MAD)来表示。
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(MAD)为14.9%。
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;
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。