Understanding Mahalanobis distance criterion for feature selection by Masnan, Maz Jamilah, Mahat, Nor Idayu, Md Shakaff, Ali Yeon, Abdullah, Abu Hassan, Zakaria, Nur Zawatil Ishqi, Yusuf, Nurlisa, Subari, Norazian, Zakaria, Ammar, Abdul Aziz, Abdul Hallis