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    KNOW Job Recommandation Algorithm Competition

    Algorithm | Structured | Classification | Recommandation | Macro f1 score

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    Data leakage 문의

    큄미
    2022.01.15 16:46 4,187 Views
    comments 1

    테스트셋에 나이나 임금과 같은 값이 결측치가 있을 경우,

    1) 트레인셋의 통계치를 이용하여 테스트셋 결측치 대체

    2) 테스트셋의 통계치를 이용하여 테스트셋 결측치 대체

    위 1번과 2번의 방법이 가능한지 궁금합니다.

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    장어
    2022.01.15 22:37

    1번의 경우 train set만의 통계치를 활용하는 것은 문제가 되지 않습니다. 하지만, 2번의 경우 우리가 알 수 없는 데이터인 테스트 데이터를 활용한 것이기 때문에 Data Leakage에 해당합니다. 

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