单选题
应用PCA后，以下哪项可以是前两个主成分？(D)(1).(0.5,0.5,...
发布于 2022-03-03 17:18:21
应用PCA后，以下哪项可以是前两个主成分？(D)
(1).(0.5,0.5,0.5,0.5)和(0.71,0.71,0,0)
(2).(0.5,0.5,0.5,0.5)和(0,0，-0.71,0.71)
(3).(0.5,0.5,0.5,0.5)和(0.5,0.5,-0.5,-0.5)
(4).(0.5,0.5,0.5,0.5)和(-0.5,-0.5,0.5,0.5)
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