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TRYFONOPOULOS CHRISTOS
PROFESSOR
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
Ε-mail: trifon (at) uop (dot) gr
Phone: 2710-230-175
Website: http://users.uop.gr/~trifon/
Short CVDr. Christos Tryfonopoulos is a Professor in the Department of Informatics and Telecommunications at the University of the Peloponnese and a member of the Software Systems and Databases (SoDa) Lab. In the past, he has served as Department Chair, Director of the MSc program "Space Science, Technologies and Applications", and Head of the P2P and Information Management research area at the Max-Planck Institute for Informatics in Germany. His research interests focus on the areas of internet technologies, artificial intelligence applications, data/information management, distributed systems (grid/cloud/p2p/agent computing), and digital libraries. He has published more than 100 research papers in the fields of his research interests and has coordinated/participated in 16 European and national R&D projects. He has served as a reviewer for top international scientific journals and conferences, as an evaluator of research proposals and projects for the European Commission and the General Secretariat for Research and Innovation, and has received two national scholarships and three awards/distinctions for his research work at international scientific conferences.
Scientific Interests: Internet applications (web information systems, grid/cloud/p2p computing, social networks, digital libraries)Information management (information retrieval/filtering, machine learning and data mining applications, data science, personal information management, user and data anonymity)Distributed systems (distributed social networks, distributed computing, peer-to-peer networks, multi-agent systems)Digital libraries (research analytics, digital library architectures, content retrieval/filtering/archival)Databases (big data streams, indexing & query processing, distributed databases, cultural & biomedical databases)
Selected publications:
- Christos Tryfonopoulos and Nicholas Kolokotronis. Cybersecurity in the IoT. In Future Internet 18(3), 127, 2026.
- Kimon Deligiannis, Christos Tryfonopoulos, Paraskevi Raftopoulou, Costas Vassilakis, Vassilis Kaffes and Spiros Skiadopoulos. A Machine Learning Framework for Harvesting and Harmonizing Cultural and Touristic Data. In Information, 2025.
- Vassiliki Stouraiti, Giorgos Mpardis, Konstantinos Roumeliotis, Costas Vassilakis, Christos Tryfonopoulos, and Dimitris Spiliotopoulos. Optimizing Collaborative Filtering in Very Sparse Datasets: a Confidence-based Approach. In Proceedings of the 17th International Conference on Information, Intelligence, Systems and Applications (IISA 2026), Rodos, Greece, July 2026.
- Konstantinos Roumeliotis, Dionisis Margaris, Dimitris Spiliotopoulos, Giorgos Mpardis, Christos Tryfonopoulos, and Costas Vassilakis. A Comparative Study of Qwen and Gemma Large Language Models for Social Media Slang and Emoji Sentiment Analysis for Business Recommender Systems. In Proceedings of the 17th International Conference on Information, Intelligence, Systems and Applications (IISA 2026), Rodos, Greece, July 2026.
- Maria Karatsoli, Ioanna Pagoni, Kimon Deligiannis, Christos Tryfonopoulos, Paraskevi Raftopoulou, and Amalia Polydoropoulou. Mobility in the Feed: Assessing Facebook Communication and Public Engagement in European Cities. In Proceedings of the 8th Conference on Sustainable Mobility (CSuM), Skyros, Greece, July 2026.
- Paris Koloveas, Serafeim Chatzopoulos, Thanasis Vergoulis, and Christos Tryfonopoulos. InsightGUIDE: An Opinionated AI Assistant for Guided Critical Reading of Scientific Literature. In Proceedings of the 37th IEEE International Conference on Tools with Artificial Intelligence (ICTAI), Athens, Greece, November 2025.
- Maria Karatsoli, Ioanna Pagoni, Kimon Deligiannis, Stefanos Vlachos, Christos Tryfonopoulos, Paraskevi Raftopoulou, and Amalia Polydoropoulou. Social Media Metrics for Urban Mobility: Engagement Insights from X (formerly Twitter) in European Cities. In Proceedings of the 12th International Congress on Tranportation Research (ICTR), Thessaloniki, Greece, October 2025.
- Paris Koloveas, Serafeim Chatzopoulos, Thanasis Vergoulis, and Christos Tryfonopoulos. Can LLMs Predict Citation Intent? An Experimental Analysis of In-context Learning and Fine-tuning on Open LLMs. In Proceedings of the 29th International Conference on Theory and Practice of Digital Libraries (TPDL), Tampere, Finland, September 2025.
- Charis Kotsiopoulos, Nikos Dimitrakopoulos, and Christos Tryfonopoulos. DinoAI - An interactive self-playing retro game/display for exploring Machine Learning concepts. In Proceedings of the 10th Central and Eastern European Game Studies (CEEGS), Nafplio, Greece, October 2024.