Since January 2018, Ricky Maulana Fajri is a PhD candidate in the data mining group, Eindhoven University of Technology, Netherlands. He received MSc in Computer Science (2011) at University of Technology Sydney, Australia. Since 2015, he works as a lecturer and researcher in Department of Information Technology, Faculty of Computer Science, at University of Indo Global Mandiri. Palembang Indonesia. His research interests including Machine Learning, Active Learning and Fairness for Active Learning. Currently, he conducts research on the Practical Batch Mode Active Learning for Imbalanced Data under supervision of Prof. dr. Mykola Pechenizkiy.