????? sample data query? ??? ????. sample data? ?? ID? ?? 47715145949628700 ? ????? ?????. ??? pandas? sample code? ?? ???? sample_measurement_table? load? ?? 47715145949628715? ?? ????, ?? ?? ?? ?????.. ?? cohort ????, label??? pandas? ??? ?? ID? 00?? ??? ????. ?????? ??? ??? ? ?????, ?? ????? ?? ? ????? ?? ????? ???? ????? ?? ??? ???? ? ? ??? ?? ??????. ?????.

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?? ??? train, validation, test, sample ???? person_id, subject_id ? ???? ?? ?? ?? ??? ?? ??? ???????. ??? ?? ??? ???? ????? ?????. ?????!
?? ??????. sample data? ??? ??? 00?? ???? measure ???? 15? ??? ?? ?? ??? ????? ?? ???? ?????. ???? ? ?? ?? ? ????. ?????.
???? ??? ???? csv? numeric value ? ????? ? ???? rounding error ? ??? ?????. ????? ??? ?? ?? ??? ??? ??? ?? ???? ?? ?? ?? ???? ???? ?????. ``` ?? ??? Number precision 15 digits Largest allowed positive number 9.99999999999999E+307 ``` ?? ??? ???? ?? ????? ?? ?? ?? rounding ???? ???? ??? 00?? ?? ?? ??? ???? ???? ????. ?? ?? ?? ??? notepad++? ??? ????? ?? ?? ??? ?? ???? 47715145949628715? ?? ????. ?? ??? ????? ? ?? ?? ?? ??? ???? ??? ??? ??? ?? ???? ?? ?? ????????. ?? ? ?? ?? ?? ?????????. ??? ??? ?? ??? ??? ??? ????? unsigned int 64bit ? ????? ????? byte array ?? ??? ??? ? ??? ????. ?????. ``` ?? ??? ?? https://support.office.com/en-us/article/Excel-specifications-and-limits-1672b34d-7043-467e-8e27-269d656771c3#bmcalculation rounding error ?? https://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html ```

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