Information about

Research

My research interests are mainly focused in the areas of Information Retrieval and Exploratory Search.

Journals

  1. K. Papantoniou, P. Papadakos, T. Patkos, G. Flouris, I. Androutsopoulos, and D. Plexousakis. Deception detection in text and its relation to the cultural dimension of individualism/collectivism. In Natural Language Engineering (to appear).
  2. E. Pitoura, P. Tsaparas, G. Flouris, I. Fundulaki, P. Papadakos, S. Abiteboul, and G. Weikum. On Measuring Bias in Online Information.. In SIGMOD Record, 46 (4), pp 16-21, 2017.
  3. Y. Tzitzikas, N. Manolis and P. Papadakos. Faceted Exploration of RDF/S Datasets: A Survey. In Journal of Intelligent Information Systems (JIIS), 48 (2), pp 329-364, 2017.
  4. C. Lantzaki, P. Papadakos, A. Analyti, and Y. Tzitzikas. Radius-aware Approximate Blank Node Matching using Signatures. In Knowledge and Information Systems, 50 (2), pp 505-542, Springer, 2017.
  5. N. Minadakis, Y. Marketakis, M. Doerr, C. Bekiari, P. Papadakos, A. Gougousis, N. Bailly and Christos Arvanitidis. LifeWatch Greece data-services: Discovering Biodiversity Data using Semantic Web Technologies In Biodiversity Data Journal, 2016.
  6. Y. Tzitzikas, N. Bailly, P. Papadakos, N. Minadakis and G. Nikitakis. Using preference-enriched faceted search for species identification In International Journal of Metadata, Semantics and Ontologies, 11 (3), pp 165-179, 2016.
  7. P. Papadakos, and Y. Tzitzikas. Comparing the Effectiveness of Intentional Preferences versus Preferences over Specific Choices: A User Study. In International Journal of Information and Decision Sciences , 8 (4), pp 378-403, Interscience Publishers, 2016.
  8. P. Fafalios, P. Papadakos, and Y. Tzitzikas. Enriching Textual Search Results at Query Time using Entity Mining, Linked Data and Link Analysis. In International Journal of Semantic Computing, 8 (4), 515-, World Scientific Publishing Company, 2015.
  9. P. Fafalios and P. Papadakos. Theophrastus: On Demand and Real-Time Automatic Annotation and Exploration of (Web) Documents using Open Linked Data. In Web Semantics: Science, Services and Agents on the World Wide Web, 29, pp31-38, Elsevier (ISSN: 1570-8268), 2014.
  10. Y. Tzitzikas and P. Papadakos. Interactive Exploration of Multidimensional and Hierarchical Information Spaces with Real-Time Preference Elicitation. In Journal FUNDAMENTA INFORMATICAE, 122 (4), pp 357-399, 2013.
  11. P. Papadakos, S. Kopidaki, N. Armenatzoglou and Y. Tzitzikas. On Exploiting Static and Dynamically Mined Metadata for Exploratory Web Searching. In KAIS Journal, 30 (3), pp 493-525, March 2012.

Conference Proceedings

  1. G. Kadilierakis, P. Fafalios, P. Papadakos and Y. Tzitzikas. Keyword Search over RDF using Document-centric Information Retrieval Systems. In ESWC: 17th European Semantic Web Conference, 31 May - 4 June 2020, Heraklion, Greece.
  2. P. Papadakos and G. Konstantakis. bias goggles - Graph-based Computation of the Bias of Web Domains through the Eyes of Users. In ECIR: 42th European Conference on Information Retrieval, 14-17 April 2020, Lisbon, Portugal (Best Long Paper Award).
  3. P. Papadakos and O. Kalipolitis. Dualism in Topical Relevance. Short paper, In ECIR: 42th European Conference on Information Retrieval, 14-17 April 2020, Lisbon, Portugal.
  4. N. Braunschweiler, P. Papadakos, M. Kotti, Y. Marketakis, and Y. Tzitzikas. Crowd-sourced Collection of Task-Oriented Human-Human Dialogues in a Multi-Domain Scenario. In TSD 2019: 22th International Conference on TEXT, SPEECH and DIALOGUE, 10-13 September 2019, Ljubljana, Slovenia.
  5. G. Flouris, T. Patkos, I. Chrysakis, I. Konstantinou, N. Nikolov, P. Papadakos, J. Pitt, D. Roman, A. Stan, and C. Zeginis. Towards A Collective Awareness Platform for Privacy Concerns and Expectations. In In CoopIS 2018: 26th International Conference on Cooperative Information Systems, 24-26 October 2018, Valletta, Malta.
  6. A. Papangelis, P. Papadakos, Y. Stylianou and Y. Tzitzikas. Spoken Dialogue for Information Navigation. Short paper, In Proceedings of the 19th Annual Meeting of the Special Interest Group on Discourse and Dialogue (SIGDIAL 2018), Melbourne, Australia, July 2018.
  7. Y. Tzitzikas, N. Bailly, P. Papadakos, N. Minadakis and G. Nikitakis. Species Identification through Preference-enriched Faceted Search. In Proceedings of the 9th Metadata and Semantics Research Conference (MTSR '15), Manchester, UK, September 2015.
  8. S. Kopidaki, P. Papadakos and Y. Tzitzikas. STC+ and NM-STC: Two Novel Online Results Clustering Methods for Web Searching. In Proceedings of the 10th International Conference on Web Information Systems Engineering (WISE '09), Poznan, Poland, October 2009.
  9. P. Papadakos, S. Kopidaki, N. Armenatzoglou and Y. Tzitzikas. Exploratory Web Searching with Dynamic Taxonomies and Results Clustering. In Proceedings of the 13th European Conference on Digital Libraries (ECDL '09), Corfu Island, Greece, September 2009.
  10. A. Savidis, P. Papadakos, and G. Zargianakis. Immersive 3D Visualizations for Software-Design Prototyping and Inspection. In Proceedings of the 4th International Symposium on Visual Computing (ISVC '08), Las Vegas, Nevada, USA, December 2008.
  11. P. Papadakos, Y. Theoharis, Y. Marketakis, N. Armenatzoglou and Y. Tzitzikas. Mitos: Design and Evaluation of a DBMS-based Web Search Engine. In Procs of the 12th Pan-Hellenic Conference on Informatics, Samos Island, Greece, August 2008.
  12. A. Mourouzis, D. Grammenos, M. Filou, P. Papadakos, and C. Stephanidis. Virtual Prints: An Empowering Tool for Virtual Environments. In Proceedings of the Tenth International Conference on Human-Computer Interaction, volume 3 of Human-centred computing : cognitive, social and ergonomic aspects , pages 1426-1430, Crete Island, Greece, 2003.

Workshop Proceedings

  1. E. Dimitrakis, K. Sgontzos, P. Papadakos, Y. Marketakis, A. Papangelis, Y. Stylianou, and Y. Tzitzikas. On Finding the Relevant User Reviews for Advancing Conversational Faceted Search. In 4th Workshop on Sentic Computing, Sentiment Analysis, Opinion Mining, and Emotion Detection at ESWC2018, Heraklion, Crete, Greece, 2018.
  2. M.E. Papadaki, P. Papadakos, M. Mountantonakis, and Y. Tzitzikas. An Interactive 3D Visualization for the LOD Cloud. In International Workshop on Big Data Visual Exploration and Analytics (BigVis'2018 at EDBT/ICDT 2018), Vienna, Austria, March 2018, 2018 (system: http://www.ics.forth.gr/isl/3DLod/)
  3. A. Papangelis, P. Papadakos, M. Kotti, Y. Stylianou, Y. Tzitzikas, and D. Plexousakis. LD-SDS: Towards an Expressive Spoken Dialogue System based on Linked-Data. In Proceedings of the Search Oriented Conversational AI SCAI 17 Workshop, Co-located with ICTIR 17, 2017.
  4. T. Patkos, G. Flouris, P. Papadakos, A. Bikakis, P. Casanovas, J. Gonzalez-Conejero, R. V. Figueroa, A. Hunter, G. Idir, G. Ioannidis, M. Kacprzyk-Murawska, A. Nowak, J. Pitt, D. Plexousakis, A. Rychwalska, and A. 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 (SASOST -15), 2015.
  5. P. Papadakos, and Y. Tzitzikas. Hippalus: Preference-enriched Faceted Exploration . In ExploreDB '14: Proceedings of the 1st International Workshop on Exploratory Search in Databases and the Web Co-located with EDBT/ICDT 2014, Athens, Greece, March 2014.
  6. P. Papadakos. Exploratory Web Searching with Dynamic Taxonomies, Results Clustering and Visualization. In ECDL '09 DC: Proceedings of the 13th European Conference on Digital Libraries Doctoral Consortium, Corfu Island, Greece, September 2009.
  7. P. Papadakos, S. Kopidaki, N. Armenatzoglou and Y. Tzitzikas. Exploratory Web Searching with Dynamic Taxonomies and Results Clustering. In Procs of the 8th Hellenic Data Management Symposium (HDMS'2009), Athens, Greece, August 2009
  8. A. Savidis, P. Papadakos, and G. Zargianakis. Rapid Visual Design with Semantics Encoding Through 3D CRC Cards. In SoftVis '08: Proceedings of the 4th ACM Symposium on Software Visualization, pages 193-196, Ammersee, Germany, 2008. ACM
  9. Y. Tzitzikas, N. Armenatzoglou, and P. Papadakos. FleXplorer: A Framework for Providing Faceted and Dynamic Taxonomy-based Information Exploration. In Procs of FIND'2008 (at DEXA '08) , Turin, Italy, Sept. 2008.
  10. A. Mourouzis, D. Grammenos, M. Filou, P. Papadakos, and C. Stephanidis Case Study: Sequential Evaluation of the Virtual Prints Concept and Pilot Implementation. In the Proceedings of the Workshop on Virtual Reality Design and Evaluation Nottingham, United Kingdom, January 2004.
  11. D. Grammenos, M. Filou, P. Papadakos, and C. Stephanidis Virtual Prints: Leaving Trails in Virtual Environments. In S. Muller and W. Sturzlinger, editors, Eighth Eurographics Workshop on Virtual Environments , pages 131-138, Barcelona, Spain, 2002. Eurographics Association.

Demo Papers

  1. E. Smyrnakis, K. Papantoniou, P. Papadakos and Y. Tzitzikas. Chattack: A Gamified Crowd-sourcing Platform for Tagging Deceptive & Abusive Behaviour. In ECIR 2021: 43rd European Conference on IR, 28 March - 1 April 2021, Lucca, Tuscany, Italy.
  2. G. Kadilierakis, C. Nikas, P. Fafalios, P. Papadakos and Y. Tzitzikas. Elas4RDF: Multi-perspective Triple-centered Keyword Search over RDF using Elasticsearch. In ESWC: 17th European Semantic Web Conference, 31 May - 4 June 2020, Heraklion, Greece.
  3. G. Konstantakis, G. Promponas, M. Dretakis and P. Papadakos. bias goggles: Exploring the Bias of Web Domains through the Eyes of Users. In International Workshop on Algorithmic Bias in Search and Recommendation (Bias 2020), to be held as part of the 42nd European Conference on Information Retrieval (ECIR 2020), 14-17 April 2020, Lisbon, Portugal.
  4. N. Fanourakis and P. Papadakos. Speleothem - An Information System for Caves Based on Semantic Web Technologies. Demo paper, In European Semantic Web Conference 2018 (ESWC'2018), Heraklion, Greece, June 2018.
  5. A. Papangelis, P. Papadakos, N. Braunschweiler, Y. Stylianou, Y. Marketakis, Y. Tzitzikas. Information Navigation via Spoken Dialogue and Linked Data. Demo paper, In IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP 2018, Calgary, Alberta, Canada, April 2018.
  6. P. Papadakos. Y. Tzitzikas and D. Zafeiri. An Interactive Exploratory System with Real-Time Preference Elicitation. Demo paper, In Web Information Systems Engineering - WISE 2012, Pafos, Cyprus, Volume 7651, p. 817-820, November 2012.

Demo Video

  1. Hippalus - A Preference Enriched Faceted Exploratory System Video on Youtube.

Technical Reports

  1. 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. Lazaro 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. Vicere, W. von Klitzing, L. Woerner, X. Zou. ELGAR -- a European Laboratory for Gravitation and Atom-interferometric Research. In CoRR, Information Retrieval, abs/1911.03701, Nov. 2019.
  2. E. Pitoura, P. Tsaparas, G. Flouris, I. Fundulaki, P. Papadakos, S. Abiteboul, G. Weikum. On Measuring Bias in Online Information. In CoRR, Information Retrieval, abs/1704.05730, Oct. 2017.
  3. P. Papadakos, Y. Theoharis, Y. Marketakis, N. Armenatzoglou, and Y. Tzitzikas. Object-Relational Database Representations for Text Indexing. In CoRR, Information Retrieval, abs/0906.3112, June 2009.
  4. P. Papadakos, G. Vasiliadis, Y. Theoharis, N. Armenatzoglou, S. Kopidaki, Y. Marketakis, M. Daskalakis, K. Karamaroudis, G. Linardakis, G. Makrydakis, V. Papathanasiou, L. Sardis, P. Tsialiamanis, G. Troullinou, K. Vandikas, D. Velegrakis and Y. Tzitzikas. The Anatomy of Mitos Web Search Engine. In CoRR, Information Retrieval, abs/0803.2220, March 2008.

Theses

  1. P. Papadakos. Interactive Exploration of Multi-Dimensional Information Spaces with Preference Support . PhD Dissertation, University of Crete, November 2013.
  2. P. Papadakos. Very Rapid Software-Design Prototyping With Interactive 3D CRC Cards . Master Thesis, University of Crete, November 2007.

Awards

  1. Best Long Paper Award in ECIR 2020. P. Papadakos and G. Konstantakis. bias goggles - Graph-based Computation of the Bias of Web Domains through the Eyes of Users. In ECIR: 42th European Conference on Information Retrieval, 14-17 April 2020, Lisbon, Portugal.
  2. Won the 1st prize with Pavlos Fafalios in the Blue Hackathon 2013 . We presented Theophrastus: A Semantic Exploration Tool for Marine Taxonomists. Presentation available.

Presentations

  1. Species Identification through Preference-enriched Faceted Search. MTSR 2015 - 9th Metadata and Semantics Research Conference. 9-11 September 2015, Manchester, UK. Available presentation
  2. Interactive Exploration of Multi-Dimensional Information Spaces with Preference Support. PhD Presentation, 25 November 2013, Heraklion, Crete. Available presentation
  3. Interactive Exploration of Multi-Dimensional Information Spaces with Real-Time Preference Elicitation. Hrakleitos II Workshop, 4-5 December 2012, Heraklion, Crete. Available presentation
  4. Apache Spark - 3 hour Tutorial presented twice at FORTH, 2016, Heraklion, Crete. Available presentation, code, cheatsheet

Non-research Presentations

  1. git - A little tale
    A small tutorial about git. Available presentation
    The presentation uses impress.js and is available in github. Please contribute!