Publications

2018


Dionisis Margaris and Costas Vassilakis. Exploiting Rating Abstention Intervals for Addressing Concept Drift in Social Network Recommender Systems. Informatics, 5(21): Special Issue “Advances in Recommender Systems”, 2018.

Costas Vassilakis, Vassilis Poulopoulos, Angeliki Antoniou, Manolis Wallace, George Lepouras, and Martín Lopez Nores. exhiSTORY: Smart Exhibits That Tell Their Own Stories. Future Generation of Computer Systems, Elsevier, vol. 81, pp. 542-556, April 2018.

Georgios Chatzigeorgakidis, Sophia Karagiorgou, Spiros Athanasiou, and Spiros Skiadopoulos. FML-kNN: scalable machine learning on Big Data using k-nearest neighbor joins. Journal of Big Data, 5(4), 2018.

Fuad Jamour, Spiros Skiadopoulos, and Panos Kalnis. Parallel Algorithm for Incremental Betweenness Centrality on Large Graphs. IEEE Transactions of Parallel Distributed Systems, 29(3), pp. 659-672, 2018.

Georgios Chatzigeorgakidis, Dimitrios Skoutas, Kostas Patroumpas, Spiros Athanasiou, and Spiros Skiadopoulos. Map-Based Visual Exploration of Geolocated Time Series. In EDBT/ICDT Workshops, pp. 92-99, 2018.

Christos Tryfonopoulos. Efficient and Expressive Semantic Information Push for Cultural Heritage Applications. In Proceedings of the International Workshop on Semantic Web for Cultural Heritage (SW4CH @ ESWC), Crete, Greece, 2018.

Christos Tryfonopoulos. A Methodology for the Automatic Creation of Massive Continuous Query Datasets from Real-Life Corpora. In Proceedings of the 7th International Conference on Advanced Computer Science and Information Technology (ICAIT), Vienna, Austria, April 2018.

Christos Tryfonopoulos. The Effect of Introducing Content Price in Distributed Social Networks. In Proceedings of the 23rd Conference on Information Technologies (IT), Kaunas, Lithuania, March 2018.

Dionisis Margaris and Costas Vassilakis. Using Time Clusters for Following Users’ Shifts in Rating Practices. Complex Systems Informatics and Modeling Quarterly, 75(13), pp. 22–42, December 2017/January 2018.

2017


Costas Vassilakis, Angeliki Antoniou, George Lepouras, Vassilis Poulopoulos, Manolis Wallace, Stavroula Bampatzia, and Ioannis Bourlakos. Stimulation of Reflection and Discussion in Museum Visits through the use of Social Media. Social Networks Analysis and Mining, Springer, 7(40), December 2017.

Dionisis Margaris and Costas Vassilakis. Exploiting Internet of Things Information to Enhance Venues' Recommendation Accuracy. Service Oriented Computing and Applications, Springer, 11(4), pp. 393–409, December 2017.

Lefteris Zervakis, Christos Tryfonopoulos, Spiros Skiadopoulos, and Manolis Koubarakis. Query Reorganisation Algorithms for Efficient Boolean Information Filtering. IEEE Transactions on Knowledge and Data Engineering (TKDE), 29(2), pp. 418-432, 2017.

Konstantinos Zagganas, Thanasis Vergoulis, Maria D. Paraskevopoulou, Ioannis S. Vlachos, Spiros Skiadopoulos, and Theodore Dalamagas. BUFET: boosting the unbiased miRNA functional enrichment analysis using bitsets. BMC Bioinformatics, 18(1), pp. 399:1-399:8, 2017.

Giorgos Poulis, Grigorios Loukides, Spiros Skiadopoulos, and Aris Gkoulalas-Divanis. Anonymizing datasets with demographics and diagnosis codes in the presence of utility constraints. Journal of Biomedical Informatics, vol. 65, pp. 76-96, 2017.

Manolis Terrovitis, Giorgos Poulis, Nikos Mamoulis, and Spiros Skiadopoulos. Local Suppression and Splitting Techniques for Privacy Preserving Publication of Trajectories. IEEE Transactions of Knowledge and Data Engineering (TKDE), 29(7), pp. 1466-1479, 2017.

Georgios Chatzigeorgakidis, Dimitrios Skoutas, Kostas Patroumpas, Spiros Athanasiou, and Spiros Skiadopoulos. Indexing Geolocated Time Series Data. SIGSPATIAL/GIS, vol. 19, pp. 1-10, 2017.

Ziyad AlGhamdi, Fuad Jamour, Spiros Skiadopoulos, and Panos Kalnis. A Benchmark for Betweenness Centrality Approximation Algorithms on Large Graphs. SSDBM, vol. 6, pp. 1-12, 2017.

Spiros Skiadopoulos. Directional Relations. Encyclopedia of GIS, pp. 476-482, 2017.

2016


Dionisis Margaris, Costas Vassilakis, and Panagiotis Georgiadis. Recommendation Information Diffusion in Social Networks Considering User Influence and Semantics. Social Network Analysis and Mining, Springer, 6(1), pp. 1-22, 2016.

Dionisis Margaris, Costas Vassilakis, and Panayiotis Georgiadis. Improving QoS Delivered by WS-BPEL Scenario Adaptation through Service Execution Parallelization. In Proceedings of the ACM Symposium on Applied Computing (SAC), 2016.

Dionisis Margaris and Costas Vassilakis. Pruning and Aging for User Histories in Collaborative Filtering. In Proceedings of the IEEE Symposium Series on Computational Intelligence, 2016.

Joanna Asia Biega, Krishna P. Gummadi, Ida Mele, Dragan Milchevski, Christos Tryfonopoulos, and Gerhard Weikum. R-Susceptibility: An IR-Centric Approach to Assessing Privacy Risks for Users in Online Communities. In Proceedings of the 39th International ACM SIGIR Conference, Pisa, Italy, July 2016.

Lefteris Zervakis, Christos Tryfonopoulos, Spiros Skiadopoulos, and Manolis Koubarakis. Full-Text Support for Publish/Subscribe Ontology Systems. In European Semantic Web Conference (ESWC), pp. 233-249, 2016.

Lefteris Zervakis, Christos Tryfonopoulos, Vinay Setty, Stephan Seufert, and Spiros Skiadopoulos. Towards Publish/Subscribe Functionality on Graphs. In Proceedings of the International Workshop on Preservation of Evolving Big Data (DIACHRON @ EDBT), Bordeaux, France, March 2016.

Stavroula Bampatzia, Angeliki Antoniou, George Lepouras, Costas Vasilakis, and Manolis Wallace. Using Social media to stimulate history reflection in cultural heritage. In Proceedings of the International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP), 2016.

Costas Vassilakis, Angeliki Antoniou, George Lepouras, Manolis Wallace, Ioanna Lykourentzou, and Yannick Naudet. Interconnecting Objects, Visitors, Sites and (Hi)Stories across Cultural and Historical Concepts: the CrossCult project. In Proceedings of the 2nd International Conference on Digital Heritage (Euromed), 2016.

Stavroula Bampatzia, Omar Gustavo Bravo-Quezada, Angeliki Antoniou, Martin Lopez Nores, Manolis Wallace, George Lepouras, and Costas Vasilakis. The use of semantics in the CrossCult H2020 project. In Proceedings of the 2nd International Keystone Conference (IKC), 2016.

2015


Dionisis Margaris, Costas Vassilakis, and Panayiotis Georgiadis. An integrated framework for adapting WS-BPEL scenario execution using QoS and collaborative filtering techniques. Science of Computer Programming, Elsevier, vol. 98, pp. 707–734, 2015.

Dionisis Margaris, Costas Vassilakis, and Panayiotis Georgiadis. A Hybrid Framework for WS-BPEL Scenario Execution Adaptation, Using Monitoring and Feedback Data. In Proceedings of the ACM Symposium on Applied Computing (SAC), 2015.

Dimitris Maroulis and Costas Vassilakis. Real time systems, Tziolas Publications, ISBN: 978-960-418-457-6, 2015.

Dionisis Margaris, Panayiotis Georgiadis, and Costas Vassilakis. A Collaborative Filtering Algorithm with Clustering for Personalized Web Service Selection in Business Processes. In Proceedings of the IEEE International Conference on Research Challenges in Information Science (RCIS), 2015.

Akrivi Katifori, Costas Vassilakis, George Lepouras, and Elena Torou. Effectiveness of visualization for information retrieval through ontologies with entity evolution: the impact of ontology modelling. International Journal of Information Retrieval Research, 5(2), 2015.

Dionisis Margaris, Panayiotis Georgiadis, and Costas Vassilakis. On Replacement Service Selection in WS-BPEL Scenario Adaptation. In Proceedings of the 8th IEEE International Conference on Service Oriented Computing & Applications, 2015.

Giorgos Poulis, Aris Gkoulalas-Divanis, Grigorios Loukides, Spiros Skiadopoulos, and Christos Tryfonopoulos. Secreta: A Tool for Anonymizing Relational, Transaction and RT-datasets. In Medical Data Privacy Handbook, Aris Gkoulalas-Divanis and Grigorios Loukides (editors), Springer, pp. 83-109, 2015.

Georgios Chatzigeorgakidis, Sophia Karagiorgou, Spiros Athanasiou, and Spiros Skiadopoulos. A MapReduce based k-NN joins probabilistic classifier. Big Data, pp. 952-957, 2015.

Amalia Tsafara, Christos Tryfonopoulos, Spiros Skiadopoulos, and Lefteris Zervakis. Cloud-Based Data and Knowledge Management for Multi-Centre Biomedical Studies. In Proceedings of the International Conference on Knowledge Capture (K-CAP), Palisades NY, USA, October 2015. (short papers track)

Christos Tryfonopoulos, Paraskevi Raftopoulou, Vinay Setty, and Argiris Xiros. Towards Content-Based Publish/Subscribe for Distributed Social Networks. In Proceedings of the International Conference on Distributed Event-Based Systems (DEBS), Oslo, Norway, June 2015. (poster track)

Dimitris Giouroukis, Nikos Platis, and Christos Tryfonopoulos. PViz: Visualising P2P Multi-Agent Simulations. In Proceedings of the International Conference on Autonomous Agents and Multiagent Systems (AAMAS), Istanbul, Turkey, May 2015. (demo track)

Alexander Prohaska, Christos Tryfonopoulos, and Georgiana Ifrim. Constructing Subsumption Hierarchies of Web Queries. In Proceedings of the International Workshop on Dataset PROFIling and fEderated Search for Linked Data (PROFILES @ ESWC), Portoroz, Slovenia, May 2015.

Dionisis Margaris, Panayiotis Georgiadis, and Costas Vassilakis. Preprocessor transformations and adaptation operations for improving QoS delivered by WS-BPEL scenario adaptation through service execution parallelization. Software and Database Systems (SODA) Laboratory, University of the Peloponnese, 2015 (Technical Report SDBS-TR-15002).