[{"title":"( 2 个子文件 881B ) pca-主成分分析.zip","children":[{"title":"pcalearn.py <span style='color:#111;'> 713B </span>","children":null,"spread":false},{"title":"pcaproj.py <span style='color:#111;'> 402B </span>","children":null,"spread":false}],"spread":true}]