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データ形式変換

Posted at

#エラー内容
DataConversionWarning: A column-vector y was passed when a 1d array was expected. Please change the shape of y to (n_samples,), for example using ravel().

自前のCSVを学習に用いたときに目的変数の型が少し違っていて警告されました。
これでも結果が出ているので大丈夫ですが、念のため警告が出ないように(500,1)→(500,)
のように変換してあげます。

#コード

np.ravel(data[:, 0:1])
簡単ですがnumpyのravelを使用して[]を外してあげました。
これで警告は出なくなります。

初歩的ですがメモとして書かせていただきました。

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