[{"title":"(3个子文件43KB)PCA算法实例","children":[{"title":"PCATEST","children":[{"title":"pcaguopi.m <span style='color:#111;'>2.31KB</span>","children":null,"spread":false},{"title":"test.xlsx <span style='color:#111;'>36.95KB</span>","children":null,"spread":false},{"title":"apple1.xlsx <span style='color:#111;'>13.75KB</span>","children":null,"spread":false}],"spread":true}],"spread":true}]