1. Department of Statistics and Applied Probability and Operations Research Cluster, National University of Singapore, Singapore, Singapore;
2. Department of Statistics, Chonbuk National University, Jeonju, Republic of Korea;
3. Department of Civil and Environmental Engineering and Operations Research Cluster, National University of Singapore, Singapore, Singapore;
4. Center for Uncertainty Quantification in Computational Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia