1. Graduate Institute of Finance, National Cheng Kung University, Tainan City 70101, Taiwan
2. Faculty of Digital Finance, College of Management, Yuan Ze University, No. 135, Far-East Rd., Chung-Li, Taoyuan, Taiwan
3. Faculty of Industrial Engineering and Management, College of Management, No. 135, Far-East Rd., Chung-Li, Taoyuan, Yuan-Ze University, Taiwan