The results showed that the image analysis method can obtain the average value and distribution curve of ratio of length to diameter for vilnite powder with needle shape.
研究表明图像分析方法可以直接给出硅灰石针状粉末的平均长径比及不同长径比的分布情况。
Here, we use the singular value decomposition and principal component analysis for facial feature extraction, using the average distance category as discrimination on the basis of authentication.
其中人脸特征提取采用了奇异值分解和主分量分析法，身份验证则采用了以类内平均距离为判据的算法。
The author tests and studies the validity of IPO price seeking system in China by means of empirical analysis instruments like average value test and gradual regression.
本文运用均值检验与逐步回归等实证分析工具，对我国IPO询价制度的实施效果进行了检验与研究。
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