Jetpipattanapong, D., S. Mathulaprangsan, and S. Sateanpattanakul. “The Sort-One-Versus-All for Improving Human Activity Classification with Multi-Class Support Vector Machine”. Science and Engineering Connect, vol. 44, no. 1, Mar. 2021, pp. 81-102, https://ph04.tci-thaijo.org/index.php/SEC/article/view/10359.