Ioannis Violos
Associate Professor
CV
Dr. John Violos is an Asst. Professor in the Dept. of Geography at Harokopio University of Athens, specializing in Geospatial Databases and Big Geospatial Data. He served as a member of the European Commission Digital Single Market working group on the code of conduct for switching and porting data between cloud service providers.
He has held research positions at École de Technologie Supérieure (ETS), Université du Québec, Canada; the Information Technologies Institute, Centre for Research and Technology Hellas (CERTH); and the Institute of Communication and Computer Systems (ICCS), Greece. He has participated in more than 18 internationally funded research projects (EU, Canada, and South Korea), serving as Work Package Leader and Task Leader.
He has taught more than 12 courses as an Adjunct Professor at the Department of Informatics and Telematics of Harokopio University of Athens, as well as in the MSc Program in Bioinformatics at National and Kapodistrian University of Athens. He has authored over 80 publications in journals and conference proceedings and has served as a guest editor and reviewer for more than 30 international journals, as well as a program committee member and reviewer for over 30 international conferences.
He holds a Diploma in Electrical and Computer Engineering from the National Technical University of Athens, during which he worked as an intern at the Hellenic Public Power Corporation (HPPC), and a PhD from the same university. His awards include the Best Paper Award at IEEE CISOSE 2023, Best Paper Award at IEEE iThings 2021, the Best Course Teaching Award (Adjunct Professor) in 2021, and the Thomaidion Award in 2017.
He has held research positions at École de Technologie Supérieure (ETS), Université du Québec, Canada; the Information Technologies Institute, Centre for Research and Technology Hellas (CERTH); and the Institute of Communication and Computer Systems (ICCS), Greece. He has participated in more than 18 internationally funded research projects (EU, Canada, and South Korea), serving as Work Package Leader and Task Leader.
He has taught more than 12 courses as an Adjunct Professor at the Department of Informatics and Telematics of Harokopio University of Athens, as well as in the MSc Program in Bioinformatics at National and Kapodistrian University of Athens. He has authored over 80 publications in journals and conference proceedings and has served as a guest editor and reviewer for more than 30 international journals, as well as a program committee member and reviewer for over 30 international conferences.
He holds a Diploma in Electrical and Computer Engineering from the National Technical University of Athens, during which he worked as an intern at the Hellenic Public Power Corporation (HPPC), and a PhD from the same university. His awards include the Best Paper Award at IEEE CISOSE 2023, Best Paper Award at IEEE iThings 2021, the Best Course Teaching Award (Adjunct Professor) in 2021, and the Thomaidion Award in 2017.
Selected Publications
Aroosa Hameed, John Violos, Aris Leivadeas, Nina Santi, Nathalie Mitton, “FeD-TST: Federated Temporal Sparse Transformers for QoS prediction in Dynamic IoT Networks”, IEEE Transactions on Network and Service Management, https://doi.org/10.1109/TNSM.2024.3493758
Aroosa Hameed, John Violos, Aris Leivadeas, Nina Santi, Remy Grunblatt, Nathalie Mitton, “Towards QoS Prediction based on Temporal Transformers for IoT Applications”, IEEE Transactions on Network and Service Management, Oct. 2022, https://doi.org/10.1109/TNSM.2022.3217170
Angelos-Christos Maroudis, Theodoros Theodoropoulos, John Violos, Aris Leivadeas, and Konstantinos. Tserpes,“Leveraging Graph Neural Networks for SLA Violation Prediction in Cloud Computing”, IEEE Transactions on Network and Service Management, https://doi.org/10.1109/TNSM.2023.3292392
John Violos, Fotios Voutsas, Aris Leivadeas, “Detecting application transitions and identifying application types for intent-based network assurance: A machine learning perspective”, Elsevier in Computer Networks, https://doi.org/10.1016/j.comnet.2025.111872
Athanasios Chourlias, John Violos, Aris Leivadeas, “Virtual Sensors for Smart Farming: An IoT- and AI-Enabled Approach”, Elsevier in Internet of Things, https://doi.org/10.1016/j.iot.2025.101611
Michail Kinnas, John Violos, Ioannis Kompatsiaris, and Symeon Papadopoulos, “Reducing Inference Energy Consumption Using Dual Complementary CNNs”, Elsevier in Future Generation Computer Systems, https://doi.org/10.1016/j.future.2024.107606
Aroosa Hameed, John Violos, Aris Leivadeas, Nina Santi, Remy Grunblatt, Nathalie Mitton, “Towards QoS Prediction based on Temporal Transformers for IoT Applications”, IEEE Transactions on Network and Service Management, Oct. 2022, https://doi.org/10.1109/TNSM.2022.3217170
Angelos-Christos Maroudis, Theodoros Theodoropoulos, John Violos, Aris Leivadeas, and Konstantinos. Tserpes,“Leveraging Graph Neural Networks for SLA Violation Prediction in Cloud Computing”, IEEE Transactions on Network and Service Management, https://doi.org/10.1109/TNSM.2023.3292392
John Violos, Fotios Voutsas, Aris Leivadeas, “Detecting application transitions and identifying application types for intent-based network assurance: A machine learning perspective”, Elsevier in Computer Networks, https://doi.org/10.1016/j.comnet.2025.111872
Athanasios Chourlias, John Violos, Aris Leivadeas, “Virtual Sensors for Smart Farming: An IoT- and AI-Enabled Approach”, Elsevier in Internet of Things, https://doi.org/10.1016/j.iot.2025.101611
Michail Kinnas, John Violos, Ioannis Kompatsiaris, and Symeon Papadopoulos, “Reducing Inference Energy Consumption Using Dual Complementary CNNs”, Elsevier in Future Generation Computer Systems, https://doi.org/10.1016/j.future.2024.107606