机器学习算法pca 的相关内容

文章 2022-02-16 来自：开发者社区

【机器学习算法-python实现】PCA 主成分分析、降维

1.背景 PCA(Principal Component Analysis)，PAC的作用主要是降低数据集的维度，然后挑选出主要的特征。 PCA的主要思想是移动坐标轴，找到方差最大的方向上的特征值，什么叫方差最大的方向的特征值呢。就像下图中的曲线B，一样，它的覆盖范围最广。基本步骤：（...

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更新时间 2024-05-17 15:16:26

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