1. Sejong University, Seoul 143-747, Republic of Korea
2. Insitute for Transport Studies, University of Leeds, Leeds, UK
3. Department of Electronic and Electrical Engineering, The University of Sheffield, Sheffield S10 2TN, South Yorkshire, UK
4. Visual Analytics for Knowledge Laboratory (VIS2KNOW Lab), Department of Applied Artificial Intelligence, School of Convergence, College of Computing and Informatics, Sungkyunkwan University, Seoul 03063, Republic of Korea
5. Department of Computer Science, College of Computer Engineering and Sciences, Prince Sattam Bin Abdulaziz University, AlKharj 16278, Saudi Arabia
6. COPELABS, Lusófona University, Campo Grande 376, Lisbon 1749-024, Portugal
7. Department of Teleinformatics Engineering, Federal University of Ceará, Fortaleza, Ceará, Brazil