1. Department of Computer Science, University of São Paulo, São Paulo 05508-090, SP, Brazil
2. Department of Information and Technology, Kennesaw State University, Marietta, GA 30152, USA
3. Decentralized Science Lab, Kennesaw State University, Marietta, GA 30144, USA
4. School of Computing, Macquarie University, Sydney, NSW 2109, Australia
5. Binjiang Institute, Zhejiang University, Hangzhou 310027, China
6. Institute of High Performance Computing and Networking (ICAR), National Research Council (CNR), 80131 Naples, Italy
7. Institute of Mathematical and Computer Sciences, University of São Paulo, São Carlos 13566-590, SP, Brazil