PCA dimensionality reduction: feature reduction

https://nbviewer.jupyter.org/github/donggu26/donggu/blob/master/%E4%B8%BB%E6%88%90%E5%88%86%E9%99%8D%E7%BB%B4%E5%BA%94%E7%94%A8%E5%9C%A8%E7%89%B9%E5%BE%81%E9%99%8D%E7%BB%B4.ipynb

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Origin www.cnblogs.com/xiaodonggu/p/11592749.html