基于未确知理论，定义了系统不确定性的一个度量尺度——盲数方差。

Based on the uncertainty theory, a measurement scale of uncertainty - blind number variance is defined.

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基于尺度赋权方差法给出总体分布有偏并假定总体分布未知情况下休哈特均值控制图的控制限。

Reference 14 gives the control lines of shewhart mean control chart for skewed population which is unknown based on scaled weighted variance method.

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提出了利用边缘点集的协方差矩阵的特征值与特征矢量作为人脸图像尺度与方向的粗估计方法，从理论和实验上证明了该方法的可行性。

A new method for human face image scale and direction estimation is proposed using covariance matrix eigenvalue and eigenvector of edge set, which is proved by theory and experiments.

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