Hybrid learning method based on feature clustering and scoring for enhanced COVID-19 breath analysis by an electronic nose. - Shidiq Nur Hidayat; Trisna Julian; Agus Budi Dharmawan; Mayumi Puspita; Lily Chandra; Abdul Rohman; Madarina Julia; Aditya Rianjanu; Dian Kesumapramudya Nurputra; Kuwat Triyana; Hutomo Suryo Wasisto (Artif. Intell. Medicine, 2022)