This paper proposes a face recognition algorithm based on the principle components analysis (PCA) reconstruction.

提出一种基于主向量分析(PCA)重建的人脸识别方法。

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The integrated quantitative evaluation on river water quality was made by principle components analysis and logarithm center method.

本文利用主成分分析和对数中心化的方法对江河水质进行综合定量评价。

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For improving forecast accuracy and the efficiency of network training, we USES principle components analysis method to reduce the dimensionality of the feature space.

为了进一步提高预测精度和网络训练的效率，对众多的预报因子采用主成分分析的方法进行降维处理。

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And there are three components to the Aufbau Principle.

构造原理,由三个部分组成。

麻省理工公开课 - 固态化学导论课程节选

In our health care bill, one of the most important components was the idea, the basic principle that nobody should have to go without health insurance because of a preexisting condition. (Applause.) Nobody should have to go after -- go without health insurance without -- because of a preexisting condition.

WHITEHOUSE: President Obama Holds a Town Hall in New Hampshire