數據集是指數據的集合,[1]而且數據集應該能被電腦處理[2]。數據集中的值可以是數字,例如實數整數,比如用厘米表示人的身高,但也可以是標稱數據(即並非數值的數據),例如人的種族資訊。數據集中的數據也可能存在缺失值,此時必須以某種方式指出數據存在缺失。

參考文獻

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