| Affiliation: | 1. Department of Statistics and Informatics Science, Providence University, Taichung 433, Taiwan;2. Department of Industrial Management, National Taiwan University of Science and Technology, Taipei 106, Taiwan;3. Department of Decision Sciences, Western Washington University, Bellingham, WA 98225-9077, USA;4. Department Beedie School of Business, Simon Fraser University, Burnaby, BC, Canada V5A 1S6;5. Department of Applied Statistics, National Taichung University of Science and Technology, Taichung 40401, Taiwan;6. Department of Industrial Engineering and Management, National Chin-Yi University of Technology, Taichung 41101, Taiwan |
