The 5th ETRI Human Understanding AI Paper Challenge

접근
라이프로그 12종 센서 → 371 피처 → LightGBM 8 seeds × 5 folds × 7 타겟                                                                          
                                                                  
 피처                                                                                                                                                                   
  - Daytime: 12종 센서 × 시간대별(아침/오후/저녁/심야) 집계       
  - Sleep(00~09시): wHr(RMSSD·spike), wPedo, activity, screen, light                                                                                                            
  - 파생: lag1/2, roll3/7/14, subject z-score, target encoding(shift로 leakage 방지)

성능 
OOF 0.5834 / Public 0.6003                            
Q1 0.60 · Q2 0.60 · Q3 0.60 · S1 0.54 · S2 0.56 · S3 0.55 · S4 0.63   

파이팅입니다.