fgeo2023

Home Page of Giorgos Flouris

 

General information

I am a Research Director (Grade A') in FORTH-ICS. My research interests lie mainly in the broad areas of Knowledge Representation and Reasoning, (Symbolic) Artificial Intelligence, Semantic Technologies and Knowledge Graphs. I have been involved in several projects (mostly European) and published more than 150 papers in various venues. I have received awards for co-authored publications in various conferences (including STAIRS-06, ISWC-09, ISWC-15, ISWC-24, SSWS-18, CLAR-21, SEMAPRO-22 and others), and a best PC member award in ISWC-24. I am the coordinator of the Symbolic AI Group (SymbAI) of the Information Systems Laboratory of FORTH-ICS.

For more info, you may download a short bio (English, Greek), or a full CV (English, Greek).

Contact information

Foundation for Research and Technology - Hellas (FO.R.T.H.)
Institute of Computer Science (I.C.S.)
Information Systems Laboratory (I.S.L.)
Vassilika Vouton
P.O. Box 1385, GR-70013, Heraklion, Crete
Greece
Office: Ã146
Telephone: +30 2810 391674
Email: fgeo “AT” ics “DOT” forth “DOT” gr
ORCID ID: 0000-0002-8937-4118

Publications

A complete and up-to-date list of my publications appears below. A similar list can be found in google scholar and DBLP. A list maintained by the ICS staff appears here.

Journal Publications

[1]                Zubaria Asma, Daniel Hernández, Luis Galárraga, Giorgos Flouris, Irini Fundulaki, Katja Hose. Native provenance computation for federated and non-federated SPARQL queries. Transactions on Graph Data and Knowledge (TGDK), Volume 4, Issue 1, Part 2, 2026.
[download (pdf)]

[2]                Ioannis Chrysakis, David Chaves-Fraga, Giorgos Flouris, Erik Mannens, Anastasia Dimou. Exploring cutting-edge data ecosystems: A comprehensive analysis. Data & Knowledge Engineering, 162, 102539, 2026.
[download (pdf)]

[3]                Konstantinos Varsos, Merkouris Papamichail, Giorgos Flouris, Marina Bitsaki. Adaptation Procedure in Misinformation Games. Autonomous Agents and Multi-Agent Systems Journal (JAAMAS), Volume 39, article 22, 2025.
[download (pdf)]

[4]                Giorgos Flouris, Theodore Patkos, Antonis Bikakis, Alexandros Vassiliades, Nick Bassiliades, Dimitris Plexousakis. Theoretical Analysis and Implementation of Abstract Argumentation Frameworks with Domain Assignments. International Journal of Approximate Reasoning (IJAR), 161C, 2023.
[download (pdf)]

[5]                Antonis Bikakis, Giorgos Flouris, Theodore Patkos, Dimitris Plexousakis. Sketching the vision of the Web of Debates. Journal of the Frontiers of AI, research topic on “Computational Argumentation: a foundation for Human-centric AI”, Volume 6, 2023.
[download (pdf)]

[6]               Alexandros Vassiliades, Giorgos Flouris, Theodore Patkos, Antonis Bikakis, Nick Bassiliades, Dimitris Plexousakis. Argumentation frameworks with attack classification. Journal of Logic and Computation, special issue devoted to extended versions of papers presented at CLAR-21, 33(2):192-229, 2023.
[download (pdf)]

[7]               Katerina Papantoniou, Panagiotis Papadakos, Theodore Patkos, Giorgos Flouris, Ion Androutsopoulos, Dimitris Plexousakis. Deception detection in text and its relation to the cultural dimension of individualism/collectivism. Natural Language Engineering, 28(5), 545-606, 2021. Also appeared as an arXiv preprint, under number 2105.12530, 2021.
[download NLE version (pdf)] [download ArXiV version (pdf)]

[8]               Benjamin Canuel, Sven Abend, Pau Amaro-Seoane, Francesca Badaracco, Quentin Beaufils, Andrea Bertoldi, Kai Bongs, Philippe Bouyer, Claus Braxmaier, Walid Chaibi, Nelson Christensen, Florian Fitzek, Giorgos Flouris, Naceur Gaaloul, Stephane Gaffet, Carlos L. Garrido Alzar, Remi Geiger, Saida Guellati-Khelifa, Klemens Hammerer, Jan Harms, Jacques Hinderer, Michael Holynski, Joseph Junca, Stavros Katsanevas, Carsten Klempt, Christos Kozanitis, Markus Krutzik, Arnaud Landragin, Ignacio Lazaro Roche, Bastian Leykauf, Yu-Hung Lien, Sina Loriani, Sebastien Merlet, Mourad Merzougui, Miquel Nofrarias, Panagiotis Papadakos, Franck Pereira dos Santos, Achim Peters, Dimitris Plexousakis, Marco Prevedelli, Ernst M. Rasel, Yves Rogister, Severine Rosat, Albert Roura, Dylan Sabulsky, Vladimir Schkolnik, Dennis Schlippert, Christian Schubert, Leonid Sidorenkov, Jan-Niclas Siemss, Carlos Sopuerta, Fiodor Sorrentino, Christian Struckmann, Guglielmo M. Tino, Greg Tsagkatakis, Andrea Vicere, Wolf von Klitzing, Lisa Woerner, Xinhao Zou. ELGAR - a European Laboratory for Gravitation and Atom-interferometric Research. Classical and Quantum Gravity, DOI: 10.1088/1361-6382/aba80e, 2020.
[download (pdf)]

[9]                Nikoleta Tsampanaki, Theodore Patkos, Giorgos Flouris, Dimitris Plexousakis. Revising Event Calculus Theories to Recover from Unexpected Observations. Annals of Mathematics and Artificial Intelligence (AMAI), 2019.
[download (pdf)]

[10]             Giorgos Flouris, Antonis Bikakis. A Comprehensive Study of Argumentation Frameworks with Sets of Attacking Arguments. International Journal of Approximate Reasoning (IJAR), 109, 2019.
[download (pdf)]

[11]             Evaggelia Pitoura, Panayiotis Tsaparas, Giorgos Flouris, Irini Fundulaki, Panagiotis Papadakos, Serge Abiteboul, Gerhard Weikum. On Measuring Bias in Online Information. In SIGMOD Record, 46(4), pages 16-21, 2017. Also published in arXiv:1704.05730, 2017.
[download SIGMOD version (pdf)], [download arXiv version (pdf)]

[12]             Eva Daskalaki, Giorgos Flouris, Irini Fundulaki, Tzanina Saveta. Instance Matching Benchmarks in the Era of Linked Data. Journal of Web Semantics: Science, Services and Agents on the World Wide Web, 39, 2016.
Also appeared in the Journal Track of the 16th International Semantic Web Conference (ISWC-17), 2017.
[download (pdf)]

[13]             Yannis Marketakis, Nikos Minadakis, Haridimos Kondylakis, Konstantina Konsolaki, Georgios Samaritakis, Maria Theodoridou, Giorgos Flouris, Martin Doerr. X3ML Mapping Framework for Information Integration in Cultural Heritage and Beyond. International Journal on Digital Libraries (IJDL), Special Issue on “Extending, Mapping and Focusing the CIDOC CRM”, pages 1-19, 2016
[download (pdf)]

[14]             Martin Homola, Theodore Patkos, Giorgos Flouris, Josef Frtus, Alexander Simko, Jan Sefranek, Dimitra Zografistou, Martin Balaz. Resolving Conflicts in Knowledge for Ambient Intelligence. The Knowledge Engineering Review (KER), 30(05):455-513, 2015.
[download (pdf)]

[15]             Fouad Zablith, Grigoris Antoniou, Mathieu d’ Aquin, Giorgos Flouris, Haridimos Kondylakis, Enrico Motta, Dimitris Plexousakis, Marta Sabou. Ontology Evolution: A Process Centric Survey. Knowledge Engineering Review (KER), 30(01):45-75, 2015.
[download (pdf)]

[16]             Christos Strubulis, Giorgos Flouris, Yannis Tzitzikas, Martin Doerr. A Case Study on Propagating and Updating Provenance Information Using the CIDOC CRM. International Journal on Digital Libraries (IJDL), 15(1):27-51, 2014.
[download (pdf)]

[17]             Marcio M. Ribeiro, Renata Wassermann, Giorgos Flouris, Grigoris Antoniou. Minimal Change: Relevance and Recovery Revisited. Artificial Intelligence (AI) Journal, 201:59-80, 2013.
[download (pdf)]

[18]             Vicky Papavasileiou, Giorgos Flouris, Irini Fundulaki, Dimitris Kotzinos, Vassilis Christophides. High-Level Change Detection in RDF(S) KBs. Transactions on Database Systems (TODS), 38(1), 2013.
[download (pdf)]

[19]             Giorgos Flouris, George Konstantinidis, Grigoris Antoniou, Vassilis Christophides. Formal Foundations for RDF/S KB Evolution. International Journal on Knowledge and Information Systems (KAIS), 35(1), pages 153-191, 2013.
[download (pdf)]

[20]             Giorgos Flouris, Dimitris Manakanatas, Haridimos Kondylakis, Dimitris Plexousakis, Grigoris Antoniou. Ontology Change: Classification and Survey. The Knowledge Engineering Review (KER), 23(2), pages 117-152, 2008.
[download (pdf)]

[21]             Yannis Tzitzikas, Vassilis Christophides, Giorgos Flouris, Dimitris Kotzinos, Hannu Markkanen, Dimitris Plexousakis, Nicolas Spyratos. Emergent Knowledge Artefacts for Supporting Trialogical E-Learning. International Journal of Web-Based Learning and Teaching Technologies (IJWLTT), 2(3), pages 16-38, 2007.
[download (pdf)]

[22]             Giorgos Flouris. On Belief Change in Ontology Evolution. AI Communications Journal (AI-Com), 19(4), pages 395-397, PhD Thesis Summary, 2006.
[download (pdf)]

Peer-reviewed Conference and Workshop Publications

[1]                Sophia Sideri, Iosif Oikonomakis, Petros Tsirmakos, Giorgos Flouris, Vasilis Efthymiou, Dimitrios Rompogiannakis, Elias Kyritsis, Ioanna Leonidaki, Andreas Zezas. HECATE at the Crossroads: Guiding Astrophysics into the Semantic Web. In Proceedings of the 14th International Joint Conference on Knowledge Graphs (IJCKG-25), 2025.
[download (pdf)]

[2]                Ines Akaichi, Giorgos Flouris, Irini Fundulaki, Sabrina Kirrane. Implementing Usage Control Policies Using Reification with RDF-Star and SPARQL-Star. In poster Proceedings of the 23rd International Semantic Web Conference (ISWC-24), 2024. Best Poster Award.
[download paper (pdf)] [download poster (pdf)]

[3]                Zubaria Asma, Daniel Hernández, Luis Galárraga, Giorgos Flouris, Irini Fundulaki, Katja Hose. NPCS: Native Provenance Computation for SPARQL. In Proceedings of the 2024 Web Conference (WWW-24), 2024.
[download (pdf)] [video (youtube link)] [download poster (pdf)]

[4]                Ines Akaichi, Giorgos Flouris, Irini Fundulaki, Sabrina Kirrane. GUCON: A Generic Graph Pattern based Policy Framework for Usage Control Enforcement. In Proceedings of the 7th International Joint Conference on Rules and Reasoning (RULEML+RR 2023), 2023.
[download (pdf)]

[5]                Yannis Roussakis, Giorgos Flouris, Dimitra Zografistou, Elisjana Ymeralli. Extending the ArgQL Specification. In Proceedings of the 6th International Joint Conference on Rules and Reasoning (RuleML+RR-22), 16th International Rule Challenge session, 2022.
[download (pdf)]

[6]                Elisjana Ymeralli, Giorgos Flouris, Vasilis Efthymiou, Katerina Papantoniou, Theodore Patkos, Georgios Petasis, Nikiforos Pittaras, Giannis Roussakis, Elias Tzortzakakis. Representing Online Debates in the Context of E-Journalism. In Proceedings of the 16th International Conference on Advances in Semantic Processing (SEMAPRO-22), 2022. Best Paper Award.
[download (pdf)]

[7]                Ioannis Chrysakis, Panagiotis Papadakos, Theodore Patkos, Giorgos Flouris, Georgios Samaritakis, Dimitris Angelakis, Nikoleta Tsampanaki, Nena Basina, Pavlos Baritakis, Ariadne Pratikaki, Ilias Loulakakis, Bart Lyrarakis. Towards creating a customized wine story for engagement and transparency. In Proceedings of the 10th International Conference on ICT in Agriculture, Food & Environment (HAICTA-22), 2022.
[download (pdf)]

[8]                Ioannis Chrysakis, Panagiotis Papadakos, Theodore Patkos, Giorgos Flouris, Georgios Samaritakis, Dimitris Angelakis, Nikoleta Tsampanaki, Nena Basina, Pavlos Baritakis, Ariadne Pratikaki, Ilias Loulakakis, Bart Lyrarakis. The MiB System: An interactive storytelling experience in the wine industry. In Proceedings of the 13th International Conference on Information, Intelligence, Systems and Applications (IISA-22), 2022.
[download (pdf)]

[9]                Merkouris Papamichail, Constantinos Varsos, Giorgos Flouris. Implementing the adaptation procedure in misinformation games. In Proceedings of the 12th Hellenic Conference on Artificial Intelligence (SETN-22), 2022.
[download (pdf)]

[10]             Giorgos Flouris, Vasilis Efthymiou, Katerina Papantoniou, Theodore Patkos, Georgios Petasis, Nikiforos Pittaras, Dimitris Plexousakis, Giannis Roussakis, Elias Tzortzakakis, Elisjana Ymeralli. DebateLab Tools for E-journalism and Informed Citizenship. In the 4th Summit on Gender Equality in Computing (GEC-22), 2022.
[download (pdf)] [download poster (pdf)]

[11]             Constantinos Varsos, Michail Fasoulakis, Giorgos Flouris, Marina Bitsaki. Coordination mechanisms with misinformation. In Proceedings of the 14th International Conference on Agents and Artificial Intelligence (ICAART-22), 2022.
[download (pdf)]

[12]             Katerina Papantoniou, Panagiotis Papadakos, Giorgos Flouris, Dimitris Plexousakis. Linguistic Cues of Deception in a Multilingual April Fools’ Day Context. In Proceedings of the 8th Italian Conference on Computational Linguistics (CLIC-it-2021), 2021. Also appeared as an arXiv preprint, under number 2111.03913, 2021.
[download CLIC-it version (pdf)] [download arXiv version (pdf)]

[13]             Haridimos Kondylakis, Dimitrios G. Katehakis, Angelina Kouroubali, Kostas Marias, Giorgos Flouris, Theodoros Patkos, Irini Fundulaki, Dimitris Plexousakis. CareKeeper: Á Platform for Intelligent Care Coordination. In Proceedings of the 21st IEEE International Conference on BioInformatics and BioEngineering (BIBE-21), 2021.
[download (pdf)]

[14]             Constantinos Varsos, Giorgos Flouris, Marina Bitsaki, Michail Fasoulakis. A Study of Misinformation Games. In Proceedings of the 18th Pacific Rim International Conference on Artificial Intelligence (PRICAI-21), 2021.
[download (pdf)]

[15]             Katerina Papantoniou, Vasilis Efthymiou, Giorgos Flouris. EL-NEL: Entity Linking for Greek News Articles. In poster Proceedings of the 20th International Semantic Web Conference (ISWC-21), 2021. Candidate for Best Poster Award.
[download (pdf)] [download poster (pdf)] [video (youtube link)]

[16]             Alexandros Vassiliades, Giorgos Flouris, Theodore Patkos, Antonis Bikakis, Nick Bassiliades, Dimitris Plexousakis. A Multi Attack Argumentation Framework. In Proceedings of the 4th International Conference on Logic and Argumentation (CLAR-21), 2021. Best Paper Award.
[download (pdf)]

[17]             Alexandros Vassiliades, Theodore Patkos, Giorgos Flouris, Antonis Bikakis, Nick Bassiliades, Dimitris Plexousakis. Abstract Argumentation Frameworks with Domain Assignments. In Proceedings of the 30th International Joint Conference on Artificial Intelligence (IJCAI-21), 2021.
[download (pdf)] [download poster (pdf)]

[18]             Argyro Avgoustaki, Giorgos Flouris, Dimitris Plexousakis. A Declarative Query Language for Data Provenance. In Proceedings of the 13th Workshop on the Theory and Practice of Provenance (TaPP-21), 2021.
[download (pdf)]

[19]             Ioannis Chrysakis, Giorgos Flouris, Maria Makridaki, Theodore Patkos, Yannis Roussakis, Georgios Samaritakis, Nikoleta Tsampanaki, Elias Tzortzakakis, Elisjana Ymeralli, Tom Seymoens, Anastasia Dimou, Ruben Verborgh. A Rewarding Framework for Crowdsourcing to Increase Privacy Awareness. In Proceedings of the 35th Annual IFIP WG 11.3 Conference on Data and Applications Security and Privacy (DBSec-21), 2021. Best Paper Award.
[download (pdf)]

[20]             Ioannis Chrysakis, Giorgos Flouris, George Ioannidis, Maria Makridaki, Theodore Patkos, Yannis Roussakis, Georgios Samaritakis, Alexandru Stan, Nikoleta Tsampanaki, Elias Tzortzakakis, Elisjana Ymeralli. Evaluating the data privacy of mobile applications through crowdsourcing. In Proceedings of the 33rd International Conference on Legal Knowledge and Information Systems (JURIX-20), Short Paper, 2020.
[download (pdf)]

[21]             Ioannis Chrysakis, Giorgos Flouris, George Ioannidis, Maria Makridaki, Theodore Patkos, Yannis Roussakis, Georgios Samaritakis, Alexandru Stan, Nikoleta Tsampanaki, Elias Tzortzakakis, Elisjana Ymerall. CAP-A: A Suite of Tools for Data Privacy Evaluation of Mobile Applications. In Proceedings of the 33rd International Conference on Legal Knowledge and Information Systems (JURIX-20), Demo Paper, 2020.
[download (pdf)]

[22]             Alexandros Vassiliades, Theodore Patkos, Antonis Bikakis, Giorgos Flouris, Nick Bassiliades, Dimitris Plexousakis. Preliminary notions of arguments from commonsense knowledge. In Proceedings of the 11th Hellenic Conference on Artificial Intelligence (SETN-20), 2020.
[download (pdf)]

[23]             Alexandru Stan, Konstantina Geramani, George Ioannidis, Ioannis Chrysakis, Giorgos Flouris, Maria Makridaki, Theodore Patkos, Yannis Roussakis, Georgios Samaritakis, Nikoleta Tsampanaki, Elias Tzortzakakis, Elisjana Ymeralli. CAP-A: A community-driven approach to privacy awareness. In Proceedings of the NEM Summit 2020, B’ Smart – European Media Science and Technology Meets Arts, Application, Experimental and Business Track, 2020.
[download (pdf)]

[24]             Ioannis Chrysakis, Giorgos Flouris, Theodore Patkos, Anastasia Dimou, Ruben Verborgh. REWARD: Ontology for reward schemes. In Poster Proceedings of the 17th Extended Semantic Web Conference (ESWC-20), 2020.
[download paper (pdf)], [download poster (pdf)]

[25]             Giorgos Flouris, Theodore Patkos, Ioannis Chrysakis, Ioulia Konstantinou, Nikolay Nikolov, Panagiotis Papadakos, Jeremy Pitt, Dimitru Roman, Alexandru Stan, Chrysostomos Zeginis. Towards a collective awareness platform for privacy concerns and expectations. In Proceedings of the 26th International Conference on Cooperative Information Systems (CoopIS-18), part of the OTM Confederated International Conferences: On the Move to Meaningful Internet Systems, pages 135-152, 2018.
[download (pdf)]

[26]             Vassilis Papakonstantinou, Irini Fundulaki, Giorgos Flouris. Assessing Linked Data Versioning Systems: The Semantic Publishing Versioning Benchmark. In Proceedings of the 12th International Workshop on Scalable Semantic Web Knowledge Base Systems (SSWS-18), chosen as a Best Workshop Paper and selected for inclusion also in E. Demidova, A.J. Zaveri, E. Simperl (Eds.), Emerging Topics in Semantic Technologies, ISWC 2018 Satellite Events, ISBN: 978-3-89838-736-1, AKA Verlag Berlin, 2018.
[download (pdf)]

[27]             Dimitra Zografistou, Giorgos Flouris, Theodore Patkos, Dimitris Plexousakis. Implementing the ArgQL Query Language. In Proceedings of the 7th International Conference on Computational Models of Argument (COMMA-18), short paper, 2018.
[download (pdf)]

[28]             Tzanina Saveta, Irini Fundulaki, Giorgos Flouris, Axel-Cyrille Ngonga Ngomo. SPgen: A Benchmark Generator for Spatial Link Discovery Tools. In Proceedings of the 17th International Semantic Web Conference (ISWC-18), 2018.
[download (pdf)]

[29]             Prodromos Lilitsis, Theodore Patkos, Giorgos Flouris, Dimitris Plexousakis. Travel Companion: A mobile system for trip assistance relying on Artificial Intelligence and Augmented Reality. In Proceedings of the 10th Hellenic Conference on Artificial Intelligence (SETN-18), poster presentation, 2018.
[download (pdf)]

[30]             Filippos Gouidis, Theodoros Patkos, Giorgos Flouris, Dimitris Plexousakis. Dynamic Repairing A*: a Plan-Repairing Algorithm for Dynamic Domains. In Proceedings of the 10th International Conference on Agents and Artificial Intelligence (ICAART-18), Short Paper, 2018.
[download (pdf)]

[31]             Nikoleta Tsampanaki, Giorgos Flouris, Theodore Patkos. Steps Towards Commonsense-Driven Belief Revision in the Event Calculus. In Proceedings of the 13th International Symposium on Logical Formalizations of Commonsense Reasoning (Commonsense-17), 2017.
[download (pdf)]

[32]             Elisjana Ymeralli, Giorgos Flouris, Theodore Patkos, Dimitris Plexousakis. APOPSIS: A Web-based Platform for the Analysis of Structured Dialogues. In Proceedings of the 16th International Conference on Ontologies, DataBases, and Applications of Semantics (ODBASE-17), 2017
[download (pdf)]

[33]             Vassilis Papakonstantinou, Giorgos Flouris, Irini Fundulaki, Kostas Stefanidis, Yannis Roussakis. SPBv: Benchmarking Linked Data Archiving Systems. In Proceedings of the 2nd Workshop on Benchmarking Linked Data (BLINK-17), 2017.
[download (pdf)]

[34]             Tzanina Saveta, Giorgos Flouris, Irini Fundulaki, Axel-Cyrille Ngonga Ngomo. Benchmarking Link Discovery Systems for Geo-Spatial Data. In Proceedings of the 2nd Workshop on Benchmarking Linked Data (BLINK-17), 2017.
[download (pdf)]

[35]             Ioannis Chrysakis, Emmanouil Dermitzakis, Giorgos Flouris, Theodore Patkos, Dimitris Plexousakis. PRESS: A Publication REpository Semantic System. In Poster/Demo Proceedings of the 13th International Conference on Semantic Systems (SEMANTiCS-17), 2017.
[download paper (pdf)], [download poster (pdf)]

[36]             Giorgos Flouris, Theodore Patkos, Ilia Adami, Antonis Bikakis, Manos Dimitrakis, George Mathioudakis, Yannis Roussakis, Dimitris Plexousakis. Methinks: Enabling Sophisticated Comment Management in the Social Web. In Poster/Demo Proceedings of the 13th International Conference on Semantic Systems (SEMANTiCS-17), 2017.
[download paper (pdf)], [download poster (pdf)]

[37]             Dimitra Zografistou, Giorgos Flouris, Dimitris Plexousakis. ArgQL: A Declarative Language for Querying Argumentative Dialogues. In Proceedings of the International Joint Conference on Rules and Reasoning 2017 (RuleML+RR), as the Best Paper of the Doctoral Consortium, 2017.
[download (pdf)]

[38]             Argyro Avgoustaki, Giorgos Flouris, Irini Fundulaki, Dimitris Plexousakis. Provenance Management for Evolving RDF Datasets. In Proceedings of the ACM-W Europe womENcourage 2016 Celebration of Women in Computing, 2016.
[download paper (pdf)], [download poster (pdf)]

[39]             Tzanina Saveta, Eva Daskalaki, Giorgos Flouris, Irini Fundulaki, Axel-Cyrille Ngonga Ngomo. How well does your Instance Matching System Perform? Experimental Evaluation with LANCE. In Proceedings of the 1st Workshop on Benchmarking Linked Data (BLINK-16), 2016.
[download (pdf)]

[40]             Vassilis Papakonstantinou, Giorgos Flouris, Irini Fundulaki, Kostas Stefanidis, Yannis Roussakis. Versioning for Linked Data: Archiving Systems and Benchmarks. In Proceedings of the 1st Workshop on Benchmarking Linked Data (BLINK-16), 2016.
[download (pdf)]

[41]             Theodore Patkos, Giorgos Flouris, Antonis Bikakis. Symmetric Multi-Aspect Evaluation of Comments (Extended Abstract). In Proceedings of the 22nd European Conference on Artificial Intelligence (ECAI-16), Short Paper, 2016.
[download (pdf)]

[42]             Vassilis Papakonstantinou, Giorgos Flouris, Irini Fundulaki, Andrey Gubichev. Some Thoughts on OWL-Empowered SPARQL Query Optimization. In Poster Proceedings of the 13th Extended Semantic Web Conference (ESWC-16), 2016.
[download (pdf)]

[43]             Argyro Avgoustaki, Giorgos Flouris, Irini Fundulaki, Dimitris Plexousakis. Provenance Management for Evolving RDF Datasets. In Proceedings of the 13th Extended Semantic Web Conference (ESWC-16), 2016.
Also appeared in Proceedings of the 14th Hellenic Data Management Symposium (HDMS-16), 2016.
[download (pdf)]

[44]             Theodore Patkos, Antonis Bikakis, Giorgos Flouris. A Multi-Aspect Evaluation Framework for Comments on the Social Web. In Proceedings of the 15th International Conference on Principles of Knowledge Representation and Reasoning (KR-16), Short Paper, 2016.
[download (pdf)]

[45]             Georgia Troullinou, Yannis Roussakis, Haridimos Kondylakis, Kostas Stefanidis, Giorgos Flouris. Understanding Ontology Evolution Beyond Deltas. In Proceedings of the 2nd International Workshop on Preservation of Evolving Big Data (DIACHRON-16), also available as CEUR-WS, Vol. 1518, 2016.
[download (pdf)]

[46]             Haridimos Kondylakis, Giorgos Flouris, Irini Fundulaki, Vassilis Papakonstantinou, Manolis Tsiknakis. Flexible Access to Patient Data through e-Consent. In Proceedings of the 5th EAI International Conference on Wireless Mobile Communication and Healthcare, “Transforming healthcare through innovations in mobile and wireless technologies” (MOBIHEALTH-15), 2015.
[download (pdf)]

[47]             Yannis Roussakis, Ioannis Chrysakis, Kostas Stefanidis, Giorgos Flouris, Yannis Stavrakas. A Flexible Framework for Understanding the Dynamics of Evolving RDF Datasets. In Proceedings of the 14th International Semantic Web Conference (ISWC-15), 2015. Best Student Paper Award.
Also appeared in Proceedings of the 14th Hellenic Data Management Symposium (HDMS-16), 2016.
[download (pdf)]

[48]             Tzanina Saveta, Eva Daskalaki, Giorgos Flouris, Irini Fundulaki, Melanie Herschel, Axel-Cyrille Ngonga-Ngomo. LANCE: Piercing to the Heart of Instance Matching Tools. In Proceedings of the 14th International Semantic Web Conference (ISWC-15), 2015.
[download (pdf)]

[49]             Yannis Roussakis, Ioannis Chrysakis, Kostas Stefanidis, Giorgos Flouris. D2V: A Tool for Defining, Detecting and Visualizing Changes on the Data Web. In Proceedings of the 14th International Semantic Web Conference, Posters and Demonstrations Track (ISWC-15), 2015.
[download paper (pdf)], [download poster (pdf)]

[50]             Tzanina Saveta, Eva Daskalaki, Giorgos Flouris, Irini Fundulaki, Axel-Cyrille Ngonga-Ngomo. LANCE: A Generic Benchmark Generator for Linked Data. In Proceedings of the 14th International Semantic Web Conference, Posters and Demonstrations Track (ISWC-15), 2015.
[download paper (pdf)], [download poster (pdf)]

[51]             Theodore Patkos, Giorgos Flouris, Panagiotis Papadakos, Antonis Bikakis, Pompeu Casanovas, Jorge Gonzalez-Conejero, Rebeca Varela Figueroa, Anthony Hunter, Gudjon Idir, George Ioannidis, Marta Kacprzyk-Murawska, Andrzej Nowak, Jeremy Pitt, Dimitris Plexousakis, Agnieszka Rychwalska, Alexandru Stan. Privacy-by-Norms Privacy Expectations in Online Interactions. In Proceedings of the 3rd International Workshop on Self-Adaptive and Self-Organising Socio-Technical Systems (SASO-ST-15), 2015.
[download (pdf)]

[52]             Nikos Minadakis, Yannis Marketakis, Haridimos Kondylakis, Giorgos Flouris, Maria Theodoridou, Martin Doerr, and Gerald de Jong. X3ML Framework: An effective suite for supporting data mappings. In Proceedings of the workshop on Extending, Mapping and Focusing the CRM (EMF-CRM-15), 2015.
[download (pdf)]

[53]             Theodora Galani, Yannis Stavrakas, George Papastefanatos, Giorgos Flouris. Supporting Complex Changes in RDF(S) Knowledge Bases. In Proceedings of the 1st DIACHRON Workshop: Managing the Evolution and Preservation of the Data Web (MEPDaW-15), published in CEUR vol-1377, 2015.
[download (pdf)]

[54]             Michalis Chortis, Giorgos Flouris. A Diagnosis and Repair Framework for DL-LiteA KBs. In Proceedings of the 1st DIACHRON Workshop: Managing the Evolution and Preservation of the Data Web (MEPDaW-15), published in CEUR vol-1377, 2015.
A slightly revised version appeared in the Post Proceedings of the ESWC-15 Workshops (selected papers), 2015.
[download the MEPDaW-15 version (pdf)], [download the ESWC-15 workshops post proceedings version (pdf)]

[55]             Tzanina Saveta, Eva Daskalaki, Giorgos Flouris, Irini Fundulaki, Melanie Herschel, Axel-Cyrille Ngonga-Ngomo. Pushing the Limits of Instance Matching Systems. A Semantics-Aware Benchmark for Linked Data. In Proceedings of the Poster Session of the 24th International World Wide Web Conference (WWW-15), 2015.
[download (pdf)]

[56]             Dimitra Zografistou, Giorgos Flouris, Theodore Patkos, Dimitris Plexousakis, Martin Balaz, Martin Homola, Alexander Simko. A Dialogical Model for Collaborative Decision Making based on Compromises. In Proceedings of the 12th European Conference on Multi-Agent Systems (EUMAS-14), Short paper, 2014.
[download (pdf)]

[57]             Martin Balaz, Josef Frtus, Giorgos Flouris, Martin Homola, Jan Sefranek. Conflict Resolution in Assumption-Based Frameworks. In Proceedings of the 12th European Conference on Multi-Agent Systems (EUMAS-14), Short paper, 2014.
[download (pdf)]

[58]             Kostas Stefanidis, Ioannis Chrysakis, Giorgos Flouris. On Designing Archiving Policies for Evolving RDF Datasets on the Web. In Proceedings of the 33rd International Conference on Conceptual Modelling (ER-14), 2014.
[download (pdf)]

[59]             Martin Balaz, Josef Frtus, Martin Homola, Jan Sefranek, Giorgos Flouris. Embedding Defeasible Logic Programs into Generalized Logic Programs. In Proceedings of the 28th Workshop on (Constraint) Logic Programming (WLP-14), 2014.
[download (pdf)]

[60]             Filippos Gouidis, Giorgos Flouris, Dimitris Plexousakis. A Demo for Smart City Operation Center. In Proceedings of the 8th International Rule Challenge, part of the 8th International Web Rule Symposium (RuleML-14), demo paper, 2014.
[download (pdf)]

[61]             Vassilis Papakonstantinou, Giorgos Flouris, Irini Fundulaki and Haridimos Kondylakis. Securing Access to Sensitive RDF Data. In Proceedings of the 11th Extended Semantic Web Conference (Poster and Demo Track), 2014.
[download paper (pdf)], [download poster (pdf)]

[62]             Filippos Gouidis, Theodore Patkos, Giorgos Flouris, Dimitris Plexousakis. Declarative Reasoning Approaches for Agent Coordination. In Proceedings of the 8th Hellenic Conference on Artificial Intelligence, 2014.
[download (pdf)]

[63]             Soren Auer, Theodore Dalamagas, Helen Parkinson, Francois Bancilhon, Giorgos Flouris, Dimitris Sacharidis, Peter Buneman, Dimitris Kotzinos, Yannis Stavrakas, Vassilis Christophides, George Papastefanatos, Kostas Thiveos. Diachronic Linked Data: Towards Long-term Preservation of Structured Interrelated Information. In post-proceedings of the 1st International Workshop on Open Data (WOD-12), 2012.
[download (pdf)]

[64]             Giorgos Flouris, Yannis Roussakis, Maria Poveda-Villalon, Pablo N. Mendes, Irini Fundulaki. Using Provenance for Quality Assessment and Repair in Linked Open Data. In Proceedings of the 2nd Joint Workshop on Knowledge Evolution and Ontology Dynamics (EvoDyn-12), 2012.
[download (pdf)]

[65]             Ilias Tachmazidis, Grigoris Antoniou, Giorgos Flouris, Spyros Kotoulas. Scalable Nonmonotonic Reasoning over RDF Data Using MapReduce. In Proceedings of the Joint Workshop on Scalable and High-Performance Semantic Web Systems (SSWS+HPCSW-12), 2012.
[download (pdf)]

[66]             Ilias Tachmazidis, Grigoris Antoniou, Giorgos Flouris, Spyros Kotoulas, Lee McCluskey. Large-scale Parallel Stratified Defeasible Reasoning. In Proceedings of the 20th European Conference on Artificial Intelligence (ECAI-12), 2012.
[download (pdf)]

[67]             Vassilis Papakonstantinou, Maria Michou, Irini Fundulaki, Giorgos Flouris, Grigoris Antoniou. Access Control for RDF Graphs Using Abstract Models. In Proceedings of the 17th ACM Symposium on Access Control Models and Technologies (SACMAT-12), 2012.
[download (pdf)]

[68]             Ilias Tachmazidis, Grigoris Antoniou, Giorgos Flouris, Spyros Kotoulas. Towards Parallel Nonmonotonic Reasoning with Billions of Facts. In Proceedings of the 13th International Conference on Principles of Knowledge Representation and Reasoning (KR-12), Short Paper and Poster, 2012.
[download paper (pdf)], [download poster (pdf)]

[69]             Christos Strubulis, Yannis Tzitzikas, Martin Doerr, Giorgos Flouris. Evolution of Workflow Provenance Information in the Presence of Custom Inference Rules. In Proceedings of the 3rd International Workshop on the Role of Semantic Web in Provenance Management (SWPM-12), 2012.
[download (pdf)]

[70]             Max Ostrowski, Giorgos Flouris, Torsten Schaub, Grigoris Antoniou. Evolution of Ontologies using ASP. In Proceedings of the 27th International Conference on Logic Programming (ICLP-11), Technical Communications, 2011.
[download (pdf)]

[71]             Yannis Roussakis, Giorgos Flouris, Vassilis Christophides. Declarative Repairing Policies for Curated KBs. In Proceedings of the 10th Hellenic Data Management Symposium (HDMS-11), 2011.
[download (pdf)]

[72]             Giorgos Flouris, Irini Fundulaki, Maria Michou, Grigoris Antoniou. Controlling Access to RDF Graphs. In Proceedings of the 3rd Future Internet Symposium (FIS-10), 2010.
[download (pdf)]

[73]             Giorgos Flouris, Irini Fundulaki, Maria Michou, Grigoris Antoniou. Access Control for RDF: Experimental Results. In the Poster Session of the 3rd Future Internet Symposium (FIS-10), 2010.
[download (pdf)]

[74]             Haridimos Kondylakis, Giorgos Flouris, Dimitris Plexousakis. Ontology and Schema Evolution in Data Integration: Review and Assessment. In Proceedings of the 8th International Conference on Ontologies, DataBases, and Applications of Semantics (ODBASE-09), 2009.
[download (pdf)]

[75]             Marcio M. Ribeiro, Renata Wassermann, Grigoris Antoniou, Giorgos Flouris, Jeff Pan. Belief Contraction in Web-Ontology Languages. In Proceedings of the 3rd International Workshop on Ontology Dynamics (IWOD-09), Short Paper, 2009.
[download (pdf)]

[76]             Giorgos Flouris, Irini Fundulaki, Panagiotis Pediaditis, Yannis Theoharis, Vassilis Christophides. Colouring RDF Triples to Capture Provenance. In Proceedings of the 8th International Semantic Web Conference (ISWC-09), 2009.
[download (pdf)]

[77]             Vicky Papavassiliou, Giorgos Flouris, Irini Fundulaki, Dimitris Kotzinos, Vassilis Christophides. On Detecting High-Level Changes in RDF/S KBs. In Proceedings of the 8th International Semantic Web Conference (ISWC-09), 2009. Best Student Paper Award.
[download (pdf)]

[78]             Giorgos Flouris, Irini Fundulaki, Panagiotis Pediaditis, Yannis Theoharis, Vassilis Christophides. Capturing Provenance of RDF Triples through Colours. In Proceedings of the 8th Hellenic Data Management Symposium (HDMS-09), 2009.
[download (pdf)]

[79]             Panagiotis Pediaditis, Giorgos Flouris, Irini Fundulaki, Vassilis Christophides. On Explicit Provenance Management in RDF/S Graphs. In Proceedings of the 1st Workshop on the Theory and Practice of Provenance (TAPP-09), Short Paper, 2009.
[download (pdf)]

[80]             George Konstantinidis, Giorgos Flouris, Grigoris Antoniou, Vassilis Christophides. A Formal Approach for RDF/S Ontology Evolution. In Proceedings of the 18th European Conference on Artificial Intelligence (ECAI-08), pages 405-409, 2008.
[download (pdf)]

[81]             George Konstantinidis, Giorgos Flouris, Grigoris Antoniou, Vassilis Christophides. On RDF/S Ontology Evolution. In the post-proceedings of the Joint SWDB-ODBIS Workshop on Semantic Web, Ontologies, Databases, pages 21-42, 2008.
[download (pdf)]

[82]             George Konstantinidis, Giorgos Flouris, Grigoris Antoniou, Vassilis Christophides. Ontology Evolution: A Framework and its Application to RDF. In Proceedings of the Joint SWDB-ODBIS Workshop on Semantic Web, Ontologies, Databases (SWDB-ODBIS-07), 2007.
[download (pdf)]

[83]             Giorgos Flouris, Carlo Meghini. Terminology and Wish List for a Formal Theory of Preservation. In Proceedings of PV-2007: Ensuring the Long-Term Preservation and Value Adding to Scientific and Technical Data (PV-07), 2007.
[download paper (pdf)], [download extended abstract (pdf)]

[84]             Yannis Tzitzikas, Giorgos Flouris. Mind the (Intelligibility) Gap. In Proceedings of the 11th European Conference on Research and Advanced Technology for Digital Libraries (ECDL-07), pages 87-99, 2007.
[download (pdf)]

[85]             Giorgos Flouris, Carlo Meghini. Some Preliminary Ideas Towards a Theory of Digital Preservation. In Proceedings of the 1st International Workshop on Digital Libraries Foundations (DLF-07), 2007.
[download (pdf)]

[86]             Giorgos Flouris. On the Evolution of Ontological Signatures. In Proceedings of the Workshop on Ontology Evolution (OnE-07), 2007.
[download (pdf)]

[87]             Giorgos Flouris, Zhisheng Huang, Jeff Z. Pan, Dimitris Plexousakis, Holger Wache. Inconsistencies, Negations and Changes in Ontologies (Extended Abstract). In Proceedings of the 19th Belgian-Dutch Conference on Artificial Intelligence (BNAIC-07), 2007.
[download (pdf)]

[88]             Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou. A Classification of Ontology Change. In the Poster Session of the 3rd Italian Semantic Web Workshop, Semantic Web Applications and Perspectives (SWAP-06), 2006.
[download (pdf)]

[89]             Yannis Tzitzikas, Vassilis Christophides, Giorgos Flouris, Dimitris Kotzinos, Hannu Markkanen, Dimitris Plexousakis, Nicolas Spyratos. Emergent Knowledge Artefacts for Supporting Trialogical E-Learning. In Proceedings of the 1st International Workshop on Building Technology Enhanced Learning solutions for Communities of Practice (TELCoPs-06), 2006.
[download (pdf)]

[90]             Yannis Tzitzikas, Vassilis Christophides, Giorgos Flouris, Dimitris Kotzinos, Hannu Markkanen, Dimitris Plexousakis, Nicolas Spyratos. Trialogical E-Learning and Emergent Knowledge Artefacts. In the Poster Session of the 1st European Conference on Technology Enhanced Learning (ECTEL-06), 2006.
[download (pdf)]

[91]             Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou. On Generalizing the AGM Postulates. In Proceedings of the 3rd European Starting AI Researcher Symposium (STAIRS-06), pages 132-143, 2006. Best Paper Award.
[download (pdf)]

[92]             Giorgos Flouris, Zhisheng Huang, Jeff Z. Pan, Dimitris Plexousakis, Holger Wache. Inconsistencies, Negations and Changes in Ontologies. In Proceedings of the 21st National Conference on Artificial Intelligence (AAAI-06), pages 1295-1300, 2006.
[download (pdf)]

[93]             Giorgos Flouris, Dimitris Plexousakis. Bridging Ontology Evolution and Belief Change. Short Paper. In Proceedings of the 4th Hellenic Conference on Artificial Intelligence (SETN-06), pages 486-489, 2006.
[download (pdf)]

[94]             Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou. On Applying the AGM Theory to DLs and OWL. In Proceedings of the 4th International Semantic Web Conference (ISWC-05), pages 216-231, 2005.
[download (pdf)]

[95]             Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou. Ontology Evolution Using Belief Change and the AGM Theory. In the Poster Session of the 4th International Semantic Web Conference (ISWC-05), A0-sized poster, 2005.
[download (pdf)]

[96]             Giorgos Flouris. Applying Belief Change to Ontology Evolution. In Proceedings of the 1st International Semantic Web Doctoral Symposium (ISWDS-05), Research Thesis Summary, pages 9-12, 2005.
[download (pdf)]

[97]             Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou. Updating Description Logics Using the AGM Theory. In Proceedings of the 7th International Symposium on Logical Formalizations of Commonsense Reasoning (Commonsense-05), pages 69-76, 2005.
[download (pdf)]

[98]             Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou. Updating DLs Using the AGM Theory: A Preliminary Study. In Proceedings of the Poster Session of the 2005 Description Logic Workshop (DL-05), 2005.
[download (pdf)]

[99]             Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou. Generalizing the AGM Postulates: Preliminary Results and Applications. In Proceedings of the 10th International Workshop on Non-Monotonic Reasoning (NMR-04), pages 171-179, 2004.
[download (pdf)]

[100]          Giorgos Flouris. Belief Change in Arbitrary Logics. In Proceedings of the 3rd Hellenic Data Management Symposium (HDMS-04), PhD Presentations Session, pages 217-219, 2004.
[download (pdf)]

[101]          Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou. On a Unifying Framework for Comparing Knowledge Representation Schemes. In Proceedings of the 10th International Workshop on Knowledge Representation meets Databases (KRDB-03), 2003.
[download (pdf)]

[102]          Giorgos Flouris, Dimitris Plexousakis. On the Use of Matrices for Belief Revision. In post-proceedings of the 8th Panhellenic Conference in Informatics (selected papers), pages 100-117, 2003.
[download (pdf)]

[103]          Giorgos Flouris, Dimitris Plexousakis. Belief Revision in Propositional Knowledge Bases. In Proceedings of the 8th Panhellenic Conference on Informatics (PCI-01), pages 412-421, 2001.
[download (pdf)]

Book Chapters

[1]                Antonis Bikakis, Giorgos Flouris, Joao Leite, Theodore Patkos. Social Argumentation Systems. In Dov Gabbay, Gabriele Kern-Isberner, Guillermo Simari, Matthias Thimm (editors), Handbook of Formal Argumentation, volume 3. Chapter 1, 2025. Also, in Journal of Applied Logics - IfCoLog Journal, 12(3): 251-294, March 2025.
[download chapter (pdf)]

[2]                Giorgos Flouris, John Lawrence, Dimitra Zografistou. Searching, Navigating and Querying Arguments and Debate: Tools, Languages and Methodologies. In Dov Gabbay, Gabriele Kern-Isberner, Guillermo Simari, Matthias Thimm (editors), Handbook of Formal Argumentation, volume 3. Chapter 2, 2025. Also, in Journal of Applied Logics - IfCoLog Journal, 12(3): 295-322, March 2025.
[download chapter (pdf)]

[3]                Antonis Bikakis, Andrea Cohen, Wolfgang Dvorak, Giorgos Flouris, Simon Parsons. Joint Attacks and Accrual in Argumentation Frameworks. In Dov Gabbay, Massimiliano Giacomin, Guillermo Simari, Matthias Thimm (editors), Handbook of Formal Argumentation, volume 2: Current Trends in Formal Argumentation. Chapter 3, College Publications, 2021. Also, in Journal of Applied Logics - IfCoLog Journal, 8(6): 1437-1502, 2021.
[download chapter (pdf)]

[4]                Irini Fundulaki, Giorgos Flouris, Vassilis Papakonstantinou. On the Use of Abstract Models for RDF/S Provenance. In Andreas Harth, Katja Hose, Ralf Schenkel (editors), Linked Data Management: Principles and Techniques. Chapter 8.2, CRC Press, 2014.
[download chapter (pdf)]

[5]                Christoph Richter, Heidrun Allert, Vassiliy P. Tchoumatchenko, Ivan H. Furnadziev, Tania K. Vasileva, Dimitris Kotzinos, Giorgos Flouris, Vassilis Christophides, Juha Loytolainen. A Pragmatic Approach to Collaborative Semantic Modelling: The Visual Modelling (Language) Editor. In Anne Moen, Anders I. Morch, Sami Paavola (editors), Collaborative Knowledge Creation: Practices, Tools, Concepts. Sense Publishers. Chapter 5, pages 75-92, 2012.
[download chapter (pdf)]

[6]                Dimitris Kotzinos, Giorgos Flouris, Yannis Tzitzikas, Dimitris Andreou, Vassilis Christophides. Supporting Evolution of Knowledge Artefacts in Web Based Learning Environments. In Nikos Karacapilidis (editor), Solutions and Innovations in Web-Based Technologies for Augmented Learning: Improved Platforms, Tools, and Applications. Chapter IX, pages 142-167, 2009.
[download chapter (pdf)]

Edited Books, Journal Issues and Proceedings

[1]                Hideaki Takeda, Yannis Tzitzikas, Giorgos Flouris, Shizhu He, Dimitris Plexousakis, Sébastien Ferré, Ran Yu, Vasilis Efthymiou, Eleni Ilkou, Ernesto Jiménez-Ruiz, Xin Wang. Knowledge Graphs: 14th International Joint Conference, IJCKG 2025 Heraklion, Crete, Greece, October 15–17, 2025 Proceedings. 2026.
[download frontmatter (pdf)] [link to official proceedings]

[2]                Giorgos Flouris, Dominique Laurent, Dimitris Plexousakis, Nicolas Spyratos, Yuzuru Tanaka (editors). Information Search, Integration, and Personalization. Post-proceedings of the 13th International Workshop on Information Search, Integration, and Personalization (ISIP-2019), revised selected papers, Communications in Computer and Information Science (CCIS) 1197, Springer, 2020.
[download preface (pdf)]

[3]                Giorgos Flouris, Guilin Qi (editors). Proceedings of the 4th International Workshop on Ontology Dynamics (IWOD-10). 2010.
[CEUR, vol.651]

[4]                Giorgos Flouris, Mathieu d’ Aquin, Grigoris Antoniou, Jeff Pan, Dimitris Plexousakis (editors). Recent Advances in Ontology Dynamics. Journal of Logic and Computation (JLC), Special Issue, 19(5), 2009.
[download from Oxford Journals]

[5]                Dimitris Plexousakis, Jeff Pan, Giorgos Flouris, Mathieu d’ Aquin, Grigoris Antoniou (editors). Proceedings of the 2nd International Workshop on Ontology Dynamics (IWOD-08). 2008.
[download (pdf)]

[6]                Giorgos Flouris, Mathieu d’ Aquin (editors). Proceedings of the International Workshop on Ontology Dynamics (IWOD-07). 2007.
[download (pdf)]

Invited Talks and Non-peer-reviewed Publications

[1]                Merkouris Papamichail, Konstantinos Varsos, Giorgos Flouris, João Marques-Silva. The Cost of Relaxation: Evaluating the Error in Convex Neural Network Verification. In arXiv:2604.18728, 2026.
[download (pdf)]

[2]                Iosif Oikonomakis, Vasilis Efthymiou, Giorgos Flouris, Elikas Kiritsis, Ioanna Leonidaki, Michael Mavrommatis, Dimitrios Rompogiannakis, Andreas Zezas. Automated development of an astrophysical semantic catalogue in PARSEC. In Proceedings of the UniversAI symposium “Exploring the Universe with Artificial Intelligence”, IAUS 397, 2025.
[download abstract (txt)] [download (pdf)]

[3]                Giorgos Flouris. Ontology Evolution Using the AGM Theory. Invited poster for the celebration for the 40 years of the Computer Science Department, University of Crete (CSD40), 2025.
[download (pdf)]

[4]                Ines Akaichi, Giorgos Flouris, Irini Fundulaki, Sabrina Kirrane. Modeling and Managing Temporal Obligations in GUCON Using SPARQL-star and RDF-star. In arXiv:2510.04652, 2025.
[download (pdf)]

[5]                Konstantinos Varsos, Merkouris Papamichail, Giorgos Flouris, Marina Bitsaki. Adaptation Procedure in Misinformation Games. Preprint, appearing in ArXiV:2409.04854, 2024.
[download (pdf)]

[6]                Zubaria Asma, Daniel Hernández, Luis Galárraga, Giorgos Flouris, Irini Fundulaki and Katja Hose. NPCS: Native Provenance Computation for SPARQL. Invited Poster for the ITN KnowGraphs Winter School, 2024.
[download (pdf)]

[7]                Panagiotis Papadakos, Ioannis Chrysakis, Theodore Patkos, Giorgos Flouris, Giorgos Samaritakis, Dimitris Angelakis, Nena Basina, Nikoleta Tsampanaki, Ariadne Pratikaki, Pavlos Baritakis, Ilias Loulakakis, Maria Gouma, Akis Kioupakis, Christina Apostolidi, Bart Lyrarakis. Message-In-A-Bottle: Engaging Stories Around Sustainable and Safe Wine Products. Discover Sustainability Journal, 2023.
[download preprint (pdf)] [download final version (pdf)]

[8]                Constantinos Varsos, Giorgos Flouris, Marina Bitsaki. Noisy Games: A Study on the Effect of Noise on Game Specifications. Preprint, appearing in ArXiV:2307.01516, 2023.
[download (pdf)]

[9]                Ines Akaichi, Giorgos Flouris, Irini Fundulaki, Sabrina Kirrane. A policy framework for usage control. Invited presentation for the 2nd COST EU Workshop on Privacy Issues in Distributed Social Knowledge Graphs (PIDSKG-23), 2023.
[download (pdf)]

[10]             Giorgos Flouris. CAP-A: A Community-driven Approach to Privacy Awareness. Invited contribution for EmpoderaLIVE2022, Digital Citizen Sovereignty: Under Construction, 2022.
[download abstract (pdf)]

[11]             Giorgos Flouris. Belief Revision and Argumentation Approaches to Support Commonsense Reasoning. Keynote talk for the Workshop on Belief Revision at the 7th World Congress and School on Universal Logic (UNILOG-22), 2022.
[download abstract (pdf)] [download presentation (ppsx)] [video]

[12]             B. Canuel, S. Abend, P. Amaro-Seoane, F. Badaracco, Q. Beaufils, A. Bertoldi, K. Bongs, P. Bouyer, C. Braxmaier, W. Chaibi, N. Christensen, F. Fitzek, G. Flouris, N. Gaaloul, S. Gaffet, C. L. Garrido Alzar, R. Geiger, S. Guellati-Khelifa, K. Hammerer, J. Harms, J. Hinderer, J. Junca, S. Katsanevas, C. Klempt, C. Kozanitis, M. Krutzik, A. Landragin, I. Làzaro Roche, B. Leykauf, Y.-H. Lien, S. Loriani, S. Merlet, M. Merzougui, M. Nofrarias, P. Papadakos, F. Pereira, A. Peters, D. Plexousakis, M. Prevedelli, E. Rasel, Y. Rogister, S. Rosat, A. Roura, D. O. Sabulsky, V. Schkolnik, D. Schlippert, C. Schubert, L. Sidorenkov, J.-N. Siemß, C. F. Sopuerta, F. Sorrentino, C. Struckmann, G. M. Tino, G. Tsagkatakis, A. Viceré, W. von Klitzing, L. Woerner and X. Zou. ELGAR -- a European Laboratory for Gravitation and Atom-interferometric Research. In arXiv:1911.03701, November 2019.
[download (pdf)]

[13]             Argyro Avgoustaki, Giorgos Flouris, Irini Fundulaki, Dimitris Plexousakis. Querying Data Provenance in the Internet of Things. Invited poster for FORTH’s Research Summit, 2019
[download abstract (pdf)] [download poster (pdf)]

[14]             Giorgos Flouris. Reasoning Technologies for Theoretical and Applied AI. Invited presentation for FORTH’s Research Summit, 2019.
[download abstract (pdf)] [download presentation (pdf)]

[15]             Ioannis Chrysakis, Giorgos Flouris, Theodore Patkos. The CAPrice Initiative and the CAP-A project: A socio-technical approach to digital privacy. Invited poster for the Researchers Night, 2019.
[download poster (pdf)]

[16]             Elisjana Ymeralli, Giorgos Flouris, Theodore Patkos, Yannis Roussakis, Dimitris Plexousakis. APOPSIS: A Web-based Platform for the Analysis of Structured Dialogues. Invited poster for the Researchers Night, 2018.
[download (pdf)]

[17]             Giorgos Flouris. A Collective Awareness Platform for Privacy Concerns and Expectations: CAPrice in the Making. Invited Talk for the Artificial Cosmoi and the Law Conference, 2nd edition, 2018
[download (ppsx)]

[18]             Antonis Bikakis, Giorgos Flouris, Theodore Patkos, and Dimitris Plexousakis: Sketching the Vision of Debate Web. Invited paper for the birthday volume for the 50th birthday of Leon van der Torre, “Leon50 - Arguing about Logic, Debates in Individual and Collective Reasoning”, 2018.
[download (pdf)]

[19]             Ioannis Chrysakis, Korina Doerr, Giorgos Flouris, Yannis Marketakis, Nikos Minadakis, Panagiotis Papadakos, Theodore Patkos, Chrysostomos Zeginis. CAPrice: A Collective Awareness Platform for Privacy Concerns and Expectations. Invited poster for TEDx University of Crete Event, 2018.
[download (pdf)]

[20]             Giorgos Flouris. Towards Ensuring Privacy in the Digital World: an Approach based on Collective Awareness. Invited talk, UCL seminar, 2017
[download (ppsx)]

[21]             Vassilis Papakonstantinou, Tzanina Saveta, Giorgos Flouris, Irini Fundulaki, Axel-Cyrille Ngonga-Ngomo. HOBBIT: Holistic Benchmarking of Big Linked Data. Invited poster for the Researchers Night, 2017.
[download (pdf)]

[22]             Argyro Avgoustaki, Giorgos Flouris, Irini Fundulaki, Dimitris Plexousakis. Discovering the History of Data. Invited poster for the Researchers Night, 2017. Also appeared as an invited poster for FORTH’s Research Summit, 2017.
[download (pdf)]

[23]             Panagiotis Papadakos, Irini Fundulaki, Giorgos Flouris, Evaggelia Pitoura, Panayiotis Tsaparas. BiasMeter: On Measuring Bias in Online Information. Invited poster for the Researchers Night, 2017. Also appeared as an invited poster for FORTH’s Research Summit, 2017.
[download (pdf)]

[24]             Theodore Patkos, Giorgos Flouris, Panagiotis Papadakos, Ioannis Chrysakis. CAPrice: A Collective Awareness Platform for Privacy Concerns and Expectations. Invited poster for the Researchers Night, 2017. A slightly revised version appeared as an invited poster for FORTH’s Research Summit, 2017.
[download Poster for Researchers Night (in Greek) (pdf)], [download Poster for Research Summit (in Greek) (pdf)]

[25]             Elisjana Ymeralli, Giorgos Flouris, Theodore Patkos, Yannis Roussakis, Dimitris Plexousakis. APOPSIS: A Web-based Platform for the Analysis of Structured Dialogues. Invited poster for the Researchers Night, 2017. Also appeared as an invited poster for FORTH’s Research Summit, 2017.
[download (pdf)]

[26]             Prodromos Lilitsis, Theodore Patkos, Giorgos Flouris, Dimitris Plexousakis. Travel Companion: A Mobile System for Trip Assistance Relying on Artificial Intelligence and Augmented Reality. Invited poster for FORTH’s Research Summit, 2017.
[download (pdf)]

[27]             Giorgos Flouris. Challenges in a Highly Interconnected Digital World: the Cases of Privacy and Digital Bias. Invited Talk for the Artificial Cosmoi and the Law Conference, 2017
[download (ppsx)]

[28]             Giorgos Flouris. CAPrice: A Crowd-sourcing Approach to Digital Privacy. Panelist for the Educational Panel of Cybersecurity: Risks and Responses Conference, 2017
[No contribution available]

[29]             Manel Achichi, Michelle Cheatham, Zlatan Dragisic, Jerome Euzenat, Daniel Faria, Alfio Ferrara, Giorgos Flouris, Irini Fundulaki, Ian Harrow, Valentina Ivanova, Ernesto Jimenez-Ruiz, Elena Kuss, Patrick Lambrix, Henrik Leopold, Huanyu Li, Christian Meilicke, Stefano Montanelli, Catia Pesquita, Tzanina Saveta, Pavel Shvaiko, Andrea Splendiani, Heiner Stuckenschmidt, Konstantin Todorov, Cassia Trojahn, Ondrej Zamazal. Results of the Ontology Alignment Evaluation Initiative 2016. In Proceedings of the 11th Workshop on Ontology Matching (OM-16), also appearing in CEUR Workshop Proceedings 1766, 2016.
[download (pdf)]

[30]             Tzanina Saveta, Eva Daskalaki, Giorgos Flouris, Irini Fundulaki, Axel-Cyrille Ngonga Ngomo. LANCE: A Generic Benchmark Generator for Linked Data. In Proceedings of the European Data Forum (EDF-16), 2016.
[download (pdf)]

[31]             Giorgos Flouris, Antonis Bikakis, Theodore Patkos, Dimitris Plexousakis. Argument Extraction Challenges in a New Web Paradigm. Invited paper for the Dagstuhl Seminar 16161: Natural Language Argumentation: Mining, Processing, and Reasoning over Textual Arguments, 2016.
[download (pdf)]

[32]             Giorgos Flouris. Preservation Through Evolution Management: The DIACHRON Approach. Invited talk for the Final Dissemination Workshop of DIACHRON project, 2016.
[download (pps)]

[33]             Michelle Cheatham, Zlatan Dragisic, Jerome Euzenat, Daniel Faria, Alfio Ferrara, Giorgos Flouris, Irini Fundulaki, Roger Granada, Valentina Ivanova, Ernesto Jimenez-Ruiz, Patrick Lambrix, Stefano Montanelli, Catia Pesquita, Tzanina Saveta, Pavel Shvaiko, Alessandro Solimando, Cassia Trojahn, Ondrej Zamazal. Results of the Ontology Alignment Evaluation Initiative 2015. In Proceedings of the 10th Workshop on Ontology Matching (OM-15), also appearing in CEUR Workshop Proceedings 1545, 2016.
[download (pdf)]

[34]             Tzanina Saveta, Eva Daskalaki, Giorgos Flouris, Irini Fundulaki, Melanie Herschel, Axel-Cyrille Ngonga Ngomo. SPIMBENCH: A Scalable, Schema-Aware Instance Matching Benchmark for the Semantic Publishing Domain. Invited poster for the 3rd Workshop on Graph-based Technologies and Applications (Graph-TA-15), 2015.
[download (pdf)]

[35]             Yannis Roussakis, Ioannis Chrysakis, Kostas Stefanidis, Giorgos Flouris, Yannis Stavrakas. A Flexible Framework for Defining, Representing and Detecting Changes on the Data Web. In arXiv:1501.02652, 2015.
[download (pdf)]

[36]             Giorgos Flouris. Machine-Interpretable Online Debates for a New Web Paradigm. Invited Talk, TUWIEN-Comenius University workshop, November 2014.
[download (pps)]

[37]             Giorgos Flouris. Evolution Management for Preservation. Invited talk for the PRELIDA Consolidation and Dissemination workshop, 2014.
[download (ppsx)]

[38]             Tzanina Saveta, Eva Daskalaki, Giorgos Flouris, Irini Fundulaki, Melanie Herschel, Axel-Cyrille Ngonga-Ngomo, Dimitris Plexousakis. A Scalable Schema Aware Instance Matching Benchmark for Semantic Publishing. Invited poster for the 10th Reasoning Web Summer School, 2014.
[download (pdf)]

[39]             Dimitra Zografistou, Giorgos Flouris, Theodore Patkos, Dimitris Plexousakis. Group Decision Making Using Preferential Reasoning. Invited poster for the 10th Reasoning Web Summer School, 2014.
[download (pdf)]

[40]             Argyro Avgoustaki, Giorgos Flouris, Irini Fundulaki. Provenance Management for SPARQL Updates. Invited poster for the 10th Reasoning Web Summer School, 2014.
[download (pdf)]

[41]             Giorgos Flouris. Linked Open Data. Invited talk for the Workshop on the Provision and Use of Open Data, part of the Hack4MED of the HOMER project, 2014.
[download (ppsx)]

[42]             Giorgos Flouris, Vassilis Papakonstantinou, Irini Fundulaki. A Flexible and Powerful Access Control Model for Linked Open Data. Invited poster for the Research Summit of FORTH, 2013.
[download (pdf)]

[43]             Giorgos Flouris. Data and Knowledge Evolution. Tutorial in Open Data Tutorials, jointly organized with the 2nd International Workshop on Open Data (WOD-13), 2013.
[download (pps)]

[44]             Giorgos Flouris, Irini Fundulaki, Vassilis Papakonstantinou. Abstract Access Control Model for Dynamic RDF Datasets. In Proceedings of the European Data Forum (EDF-12), 2012.
[download (pdf)], [download (pps)]

[45]             Giorgos Flouris. High-Level Change Detection in the Semantic Web. Invited talk for the 10th anniversary of the W3C Greece Office, 2009.
[download (pps)]

[46]             Giorgos Flouris, George Konstantinidis. Formalizing the Evolution Process. In BOEMIE 2008 Workshop on Ontology Evolution and Multimedia Information Extraction (BOEMIE-08), Invited Talk, 2008.
[download paper (pdf)], [download presentation (pps)]

[47]             Giorgos Flouris, Carlo Meghini. Steps Towards a Theory of Information Preservation. In International Workshop on Database Preservation (PresDB-07), Invited Talk, 2007.
[download (pps)]

[48]             Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou. Evolving Ontology Evolution. In Proceedings of the 32nd International Conference on Current Trends in Theory and Practice of Computer Science (SOFSEM-06), Invited Talk, pages 14-29, 2006.
[download (pdf)]

Technical Reports

[1]                Zubaria Asma, Mrityunjoy Bhattacharya, Daniel Hernández, Luis Galárraga, Giorgos Flouris, Irini Fundulaki and Katja Hose. Explaining Federated SPARQL Queries with How-Provenance. In Proceedings of the COST Action DKG Workshop on Unlocking the Potential of Federated Querying and Knowledge Graph Technologies, 2024.
[download (pdf)]

[2]                Giorgos Flouris, Satoshi Nakamura, Wen Gu, Rafik Hadfi, Loizos Michael, Theodore Patkos, Seitaro Shinagawa, Katsuhito Sudoh, Hiroki Tanaka, Koichiro Yoshino. Report on the 4th Joint JST/ERCIM Workshop, Theme 1: Steps towards Trustworthy and Reliable Human-Machine Symbiotic Collaboration. In ERCIM News Magazine 136, 2024.
[original version (pdf)] [official version (html)]

[3]                Ioannis Chrysakis, Giorgos Flouris, Theodore Patkos, George Ioannidis. CAP-A – Raising Awareness Depends on Us! In ERCIM News Magazine 126, 2021.
[download (pdf)]

[4]                Dimitra Zografistou, Giorgos Flouris, Theodore Patkos, Dimitris Plexousakis. A Language for Graphs of Interlinked Arguments. In ERCIM News Magazine 118, 2019.
[download (pdf)]

[5]                Giorgos Flouris, Argyro Avgoustaki, Irini Fundulaki, Dimitris Plexousakis. ProvQL: Understanding the Provenance of your Data. In ERCIM News Magazine 117, 2019.
[download (pdf)]

[6]                Filippos Gouidis, Theodoros Patkos, Giorgos Flouris, Dimitris Plexousakis. The DRA* Algorithm. Technical Report FORTH-ICS/TR-468, July 2017.
[download (pdf)]

[7]                Kostas Stefanidis, Giorgos Flouris, Ioannis Chrysakis, Yannis Roussakis. D2V – Understanding the Dynamics of Evolving Data: A Case Study in the Life Sciences. In ERCIM News Magazine 105, 2016.
[download (pdf)]

[8]                Theodore Patkos, Antonis Bikakis, Giorgos Flouris. Rating Comments on the Social Web using a Multi-Aspect Evaluation Framework. Technical Report FORTH-ICS/TR-463, January 2016.
[download (pdf)]

[9]                Yannis Roussakis, Ioannis Chrysakis, Kostas Stefanidis, Giorgos Flouris, Yannis Stavrakas. A Flexible Framework for Understanding the Dynamics of Evolving RDF Datasets: Extended Version. Technical Report FORTH-ICS/TR-456, July 2015.
[download (pdf)]

[10]             Martin Balaz, Josef Frtus, Martin Homola, Jan Sefranek, Giorgos Flouris. Embedding Defeasible Logic Programs into Generalized Logic Programs (Extended Version). Technical Reports in Informatics TR-2014-043. Comenius University of Bratislava. 2014.
[download (pdf)]

[11]             Martin Homola, Theodore Patkos, Giorgos Flouris, Josef Frtus, Alexander Simko, Jan Sefranek, Dimitra Zografistou, Martin Balaz. Resolving Conflicts in Knowledge for Ambient Intelligence. Technical Reports in Informatics TR-2014-041. Comenius University of Bratislava. 2014.
[download (pdf)]

[12]             Filippos Gouidis, Theodore Patkos, Giorgos Flouris. Smart City Operation Center: A Platform to Optimize Urban Service Rendering. In ERCIM News Magazine 98, Special Theme: Smart Cities, 2014.
[download (pdf)]

[13]             Giorgos Flouris, Antonis Bikakis, Theodore Patkos, Dimitris Plexousakis. Globally Interconnecting Persuasive Arguments: The Vision of the Persuasive Web. Technical Report FORTH-ICS/TR-438, November 2013.
[download (pdf)]

[14]             Max Ostrowski, Giorgos Flouris, Torsten Schaub, Grigoris Antoniou. Evolution of Ontologies using ASP. Technical Report FORTH-ICS/TR-415, May 2011.
[download (pdf)]

[15]             Giorgos Flouris, Irini Fundulaki, Maria Michou, Grigoris Antoniou. Controlling Access to RDF Graphs. Technical Report FORTH-ICS/TR-405, May 2010.
[download (pdf)]

[16]             Vicky Papavassiliou, Giorgos Flouris, Irini Fundulaki, Dimitris Kotzinos, Vassilis Christophides. Formalizing High-Level Change Detection for RDF/S KBs. Technical Report FORTH-ICS/TR-398, August 2009.
[download (pdf)]

[17]             Fabio Nanni, Giorgos Flouris. Issues Related to a Soft Transition of Existing Archives to a Preservation Environment. Technical Report FORTH-ICS/TR-395, October 2008.
[download (pdf)]

[18]             Giorgos Flouris, Dimitris Plexousakis. Handling Ontology Change: Survey and Proposal for a Future Research Direction. Technical Report FORTH-ICS/TR-362, September 2005.
[download (pdf)]

[19]             Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou. AGM Postulates in Arbitrary Logics: Initial Results and Applications. Technical Report FORTH-ICS/TR-336, April 2004.
[download (pdf)]

[20]             Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou. Describing Knowledge Representation Schemes: a Formal Account. Technical Report FORTH-ICS/TR-320, April 2003.
[download (pdf)]

[21]             Giorgos Flouris, Dimitris Plexousakis. Belief Revision Using Table Transformation. Technical Report FORTH-ICS/TR-290, July 2001.
[download (pdf)]

Theses

[1]                Giorgos Flouris. On Belief Change and Ontology Evolution. Doctoral Dissertation, Department of Computer Science, University of Crete, February 2006.
[download (pdf)]

[2]                Giorgos Flouris. Belief Revision in Knowledge Bases. Master of Science Thesis, Department of Computer Science, University of Crete; also available as Technical Report FORTH-ICS/TR-292, October 2001 (in Greek).
[download full Greek thesis (pdf)], [download English abstract (pdf)]

 

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Last updated: 05/05/2026