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【Python】主成分分析

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主成分分析は、説明変数を元の次元数(列数)と同じか、それよりも少ない次元数に変換します。少ない次元数に変換することを次元削減と呼びます。なお、変換後の次元数が同じ場合も、データは主成分が計算されて変換されます。

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