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主成分分析の目的<br />

� もとのデータの情報の損失ができるだけ小さくなる<br />

ような軸を探したい。<br />

A<br />

B<br />

C<br />

D<br />

E<br />

A’ B’ C’ D’ E’<br />

C’<br />

E’<br />

A’<br />

D’<br />

B’<br />

情報の損失が少ない 情報の損失が多い<br />

射影したデータの分散が最大となる軸を探す<br />

A<br />

B<br />

C<br />

D<br />

E<br />

8

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