Validate, explore, clean and transpose data were the next activities where irrelevant columns were deleted (e.g. group, remark, individual activities points, registration number), translation from Slovene to English (columns title and content) was implemented and columns order were adjusted accordingly (logical order for success prediction, the last column was set as the predictable attribute: ‘‘Final grade’’). For more transparent prediction the different statuses were transformed (from several status lists to yes/no value). To avoid personal data problems, the student names were transformed into numbers.
Validate, explore, clean and transpose data were the next activities where irrelevant columns were deleted (e.g. group, remark, individual activities points, registration number), translation from Slovene to English (columns title and content) was implemented and columns order were adjusted accordingly (logical order for success prediction, the last column was set as the predictable attribute: ‘‘Final grade’’). For more transparent prediction the different statuses were transformed (from several status lists to yes/no value). To avoid personal data problems, the student names were transformed into numbers.
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