1. Department of Statistics, Faculty of Arts and Science, Marmara University, Göztepe Campus, Kadikoy, 34700 Istanbul, Turkey
2. Department of Industrial Engineering, Faculty of Science, Isfahan University of Technology (IUT), Isfahan 84156-83111, Iran
3. Knowledge/Intelligence Systems Laboratory, Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, ON, Canada M5S 3G8
4. Department of Statistics, Faculty of Science, Ankara University, 06100 Ankara, Turkey