1. COPELABS, Universidade Lusófona, Lisbon, Portugal
2. INESC-ID, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
3. Department of Applied Artificial Intelligence, Visual Analytics for Knowledge Laboratory (VIS2KNOW Laboratory), School of Convergence, College of Computing and Informatics, Sungkyunkwan University, Seoul, Republic of Korea
4. TECNALIA, Derio, Biscay, Spain
5. Department of Teleinformatics Engineering, Federal University of Ceará, Fortaleza, Ceará, Brazil