5-Fold train/valid set

Uploaded: https://drive.google.com/drive/folders/1Cv__c0GauDN_bDARhhkFP8jw_tykv3sj?usp=sharing

• col 추가해서 → fold 0, 1, 2, 3, 4

  • multi-label stratified

  • https://github.com/trent-b/iterative-stratification