Spectral Feature Selection Optimization for Water Quality Estimation by Manh Van Nguyen 1,2,Chao-Hung Lin 1,Hone-Jay Chu 1,*,Lalu Muhamad Jaelani 3 andMuhammad Aldila Syariz 1,3 1Department of Geomatics, National Cheng Kung University, Tainan City 701, Taiwan 2Institute of Geography, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Vietnam 3Department of Geomatics Engineering, Institut Teknologi Sepuluh Nopember, Jawa Timur 60111, Indonesia The…