Dr. Kostas Loumponias

Postdoctoral Research Associate

  • BSc Mathematics, AUTH (2009-2013)
  • MSc in Statistics and Modelling, Department of Mathematics, AUTH (2013-2015)
  • Ph.D. in Mathematics, Department of Mathematics, AUTH (2016-2020)

Kostas Loumponias joined the Information Technologies Institute (ITI) of the Center for Research and Technology, Hellas (CERTH) in 2020 as a postdoctoral research fellow.  He has previously worked as a research assistant at VC Lab /ITI-CERTH for three years (2016-2018). His main research interests include hidden states estimation with censored data, social network analysis, predictive analytics and deep learning.

Recent Publications

Show all (10)

  • K. Loumponias, A. Kosmatopoulos, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Modified SkipGram Negative Sampling Model for Faster Convergence of Graph Embedding.", Deep Learning Theory and Applications. DeLTA 2022. Communications in Computer and Information Science, vol 1858. Springer, Cham. https://doi.org/10.1007/978-3-031-37317-6_1
  • K. Loumponias, S. Raptis, E. Darra, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Forecasting Cyber-Attacks to Destination Ports Using Machine Learning", 9th International Conference on Information Systems Security and Privacy (ICISSP), 22-24 February, 2023, Lisbon, Portugal.
  • A. Kosmatopoulos, K. Loumponias, O. Theodosiadou, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Identification of Key Actor Nodes: A Centrality Measure Ranking Aggregation Approach.", In the Proceedings of the 2022 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM), 10-11 November, 2022, Istanbul, Turkey.
  • K. Loumponias, A. Kosmatopoulos, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "A Faster Converging Negative Sampling for the Graph Embedding Process in Community Detection and Link Prediction Tasks.", In Proceedings of the 3rd International Conference on Deep Learning Theory and Applications - DeLTA; ISBN 978-989-758-584-5; ISSN 2184-9277, SciTePress, pages 86-93. DOI: 10.5220/0011142000003277
  • A. Kosmatopoulos, K. Loumponias, D. Chatzakou, T. Tsikrika, S. Vrochidis, I. Kompatsiaris, "Random-Walk Graph Embeddings and the Influence of Edge Weighting Strategies in Community Detection Tasks.",In Proceedings of the 2021 Workshop on Open Challenges in Online Social Networks (OASIS ’21), August 30, 2021, Virtual Event, Ireland. ACM, New York, NY, USA. https://dl.acm.org/doi/abs/10.1145/3472720.3483621
Contact
Dr. Kostas Loumponias
Building D (Balkan Center)

Information Technologies Institute
Centre of Research & Technology - Hellas
9th km Thessaloniki - Thermi, 57001, Thessaloniki, Greece
Email: loumponias@iti.gr

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