Publications
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2017. Indexing Geolocated Time Series Data. Proceedings of the 25th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, GIS 2017, Redondo Beach, CA, USA, November 7-10, 2017. :19:1–19:10.
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2018. FML-kNN: scalable machine learning on Big Data using \emphk-nearest neighbor joins. J. Big Data. 5:4.
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2019. SciTo trends: visualising scientific topic trends. Proceedings of the 23rd International Conference on Theory and Practice of Digital Libraries (TPDL).
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2018. Unsupervised Disaggregation of Low Granularity Resource Consumption Time Series. Advances in Knowledge Discovery and Data Mining - 22nd Pacific-Asia Conference, PAKDD 2018, Melbourne, VIC, Australia, June 3-6, 2018, Proceedings, Part II. :558–570.
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2010. A Reasoning System of Ternary Projective Relations. IEEE Trans. Knowl. Data Eng.. 22:161–178.
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2008. A Drupal CMS Module for Managing Museum Collections. International Symposium on Information & communication technologies in cultural heritage.
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2008. WhereRU: GPS position reporting and a personal ontology as a virtual community utility. Proceedings of the 2nd International Conference on Research Challenges in Information Science, RCIS 2008. :141-146.
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2005. Conceptual Modeling - ER 2005, 24th International Conference on Conceptual Modeling, Klagenfurt, Austria, October 24-28, 2005, Proceedings. Lecture Notes in Computer Science. 3716
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2023. EnQuest: A Cloud Datalake Infrastructure for Heterogeneous Analytics in Maritime and Tourism Domains. DATA 2023 (demo).
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2020. Hydria: An Online Data Lake for Multi-Faceted Analytics in the Cultural Heritage Domain. Big Data and Cognitive Computing. 4:7.
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2025. A Machine Learning Framework for Harvesting and Harmonizing Cultural and Touristic Data. Information. 16:1038.
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2024. Predicting Agricultural Product and Supplies Prices using Artificial Intelligence. Proceedings of the 16th International Conference on Knowledge Management and Information Systems.
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2010. Spreading Activation Over Ontologies: From Personal Context To Web Scale Reasoning. International Journal of Semantic Computing. Special issue on Web Scale Reasoning:59–102.
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2010. From the web of data to a world of action. Journal of Web Semantics. 8 issue 4:394-408.
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2025. Fine-Tuning Large Language Models for Ontology Engineering: A Comparative Analysis of GPT-4 and Mistral. Applied Sciences. 15:2146.
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2025. Stitching History into Semantics: LLM-Supported Knowledge Graph Engineering for 19th-Century Greek Bookbinding. Machine Learning and Knowledge Extraction. 7:59.
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2025. PROVATO: A Data-Centric Edge-AI Architecture forPrecision Livestock Monitoring Using IoT. Hellenic Data Management Symposium (HDMS).
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2014. GRAMI: Frequent Subgraph and Pattern Mining in a Single Large Graph. PVLDB. 7:517–528.
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2002. SmartGov: A Knowledge-Based Platform for Transactional Electronic Services. Lecture Notes in Computer Science. :362-369.
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2007. PRIVE: anonymous location-based queries in distributed mobile systems. Proceedings of the 16th International Conference on World Wide Web, WWW 2007, Banff, Alberta, Canada, May 8-12, 2007. :371–380.
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2007. MobiHide: A Mobilea Peer-to-Peer System for Anonymous Location-Based Queries. Advances in Spatial and Temporal Databases, 10th International Symposium, SSTD 2007, Boston, MA, USA, July 16-18, 2007, Proceedings. :221–238.
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2012. A distributed recommender system architecture. International Journal of Web Engineering and Technology. 7:203–227.
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2015. PViz: Visualising P2P Multi-Agent Simulations. Proceedings of the International Conference on Autonomous Agents and Multiagent Systems (AAMAS). :1945–1946.
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