Publications

A Comparative Study of State-of-The-Art Linked Data Visualization Tools. Federico Desimoni, Nikos Bikakis, Laura Po, George Papastefanatos. In VOILA Workshop, jointly with ISWC 2020, 2020 

Exposing Points of Interest as Linked Geospatial Data. Kostas Patroumpas, Dimitrios Skoutas, Georgios Mandilaras, Giorgos Giannopoulos, Spiros Athanasiou. Symposium on Spatial and Temporal Databases (SSTD 2019), 2019 

Towards Automatic Structuring and Semantic Indexing of Legal Documents. M. Koniaris, G. Papastefanatos, Y. Vassiliou. In 20th Panhellenic Conference on Informatics (PCI’16), Patras Greece, 10 – 12 November 2016, 2016 

graphVizdb: A Scalable Platform for Interactive Large Graph Visualization. N. Bikakis, J. Liagouris, M. Krommyda, G. Papastefanatos, T.Sellis. In 32nd IEEE International Conference on Data Engineering(ICDE 2016) - Demo, Helsinki, Finland, May 2016, 2016 

Learning to Classify Spatiotextual Entities in Maps. Giorgos Giannopoulos, Nikos Karagiannakis, Dimitrios Skoutas, Spiros Athanasiou. Extending Semantic Web Conference 2016 (ESWC 2016), 2016 

OpenAIRE LOD services: Scholarly Communication Data as Linked Data. Giorgos Alexiou, Sahar Vahdati, Christoph Lange, George Papastefanatos, Steffen Lohmann. Semantics, Analytics, Visualisation: Enhancing Scholarly Data Workshop (SAVE-SD 2016) co-located with the 25th International World Wide Web Conference (WWW 2016) April 11, 2016 - Montreal, Canada, 2016 

Exploration and Visualization in the Web of Big Linked Data: A Survey of the State of the Art. Nikos Bikakis and Timos Sellis. 6th International Workshop on Linked Web Data Management (LWDM), 2016 

Towards Scalable Visual Exploration of Very Large RDF Graphs. Nikos Bikakis, John Liagouris, Maria Kromida, George Papastefanatos, and Timos Sellis. 12th Extended Semantic Web Conference (ESWC 2015), 2015 

FAGI-gis: A Tool for Fusing Geospatial RDF Data. Giorgos Giannopoulos, Nick Vitsas, Nikos Karagiannakis, Dimitrios Skoutas, Spiros Athanasiou. The 12th Extended Semantic Web Conference, Demo Track, 2015, 2015 

OSMRec tool for automatic recommendation of categories on spatial entities in OpenStreetMap. Giorgos Giannopoulos, Nikos Karagiannakis, Dimitrios Skoutas, Spiros Athanasiou. 9th ACM Conference on Recommender Systems, Demo and Posters Track, 2015 (RecSys 2015), 2015 

Automatic Recommendations of Categories for Geospatial Entities. Giorgos Giannopoulos, Nikos Karagiannakis, Dimitrios Skoutas, Spiros Athanasiou. ACM RecSys Workshop on Location-Aware Recommendations (LocalRec 2015), 2015 

Supporting Complex Changes in RDF(S) Knowledge Bases. Theodora Galani, Yannis Stavrakas, George Papastefanatos, and Giorgos Flouris. MEPDaW First Diachron Workshop (hosted by ESWC 2015), June 2015, 2015 

Keywords-To-SPARQL translation for RDF data search and exploration. Katerina Gkirtzou, Kostis Karozos, Vassilis Vassalos and Theodore Dalamagas. TPDL 2015, 2015

TripleGeo-CSW: A Middleware for Exposing Geospatial Catalogue Services on the Semantic Web. Spiros Athanasiou, Nikos Georgomanolis, Kostas Patroumpas, Michail Alexakis, and Thodoris Stratiotis. 5th International Workshop on Linked Web Data Management (LWDM), Brussels, 2015, 2015 

Towards a methodology for publishing Linked Open Statistical Data. Irene Petrou, Marios Meimaris, George Papastefanatos. Samos 2014 Summit on ICT-enabled Governance, June 30 – July 5, 2014, Samos, Greece. , 2014 

Supporting SPARQL Update Queries in RDF-XML Integration. Bikakis Nikos, Tsinaraki Chrisa, Stavrakantonakis Ioannis, Christodoulakis Stavros. 13th International Semantic Web Conference (ISWC '14), 2014 

The GeoKnow Generator: Managing Geospatial Data in the Linked Data Web. Jon Jay Le Grange, Jens Lehmann, Spiros Athanasiou, Alejandra Garcia Rojas, Giorgos Giannopoulos, Daniel Hladky, Robert Isele, Axel-Cyrille Ngonga Ngomo, Mohamed Sherif, Claus Stadler. Linking Geospatial Data Workshop, 2014, 2014 

Publishing Diachronic Life Science Linked Data. Katerina Gkirtzou, Thanasis Vergoulis, Artemis Hatzigeorgiou, Timos Sellis, Theodore Dalamagas. SWAT4LS 2014, 2014 

FAGI-tr: A tool for aligning geospatial RDF vocabularies. Giorgos Giannopoulos, Thomas Maroulis, Dimitrios Skoutas, Nikos Karagiannakis, Spiros Athanasiou. The 11th Extended Semantic Web Conference, Demo Track, 2014 (ESWC 2014), 2014 

TripleGeo: an ETL Tool for Transforming Geospatial Data into RDF Triples. Kostas Patroumpas, Michalis Alexakis, Giorgos Giannopoulos, Spiros Athanasiou. EDBT/ICDT Workshops 2014: 275-278, 2014 

FAGI: A framework for fusing geospatial RDF data. Giorgos Giannopoulos, Dimitrios Skoutas, Thomas Maroulis, Nikos Karagiannakis, Spiros Athanasiou. The 13th International Conference on Ontologies, DataBases, and Applications of Semantics, 2014 (ODBASE 2014), 2014 

Towards GeoSpatial Semantic Data Management: Strengths, Weaknesses, and Challenges Ahead. Kostas Patroumpas, Giorgos Giannopoulos, Spiros Athanasiou. ACM SIGSPATIAL 2014, 2014 

rdf:SynopsViz: A Framework for Hierarchical Linked Data Visual Exploration and Analysis. Nikos Bikakis, Melina Skourla, George Papastefanatos. 11th Extended Semantic Web Conference (ESWC2014) – Demo Track, Anissaras, Crete, Greece, May 2014, 2014 

LinkZoo: A linked data platform for collaborative management of heterogeneous resources. Marios Meimaris, George Alexiou, George Papastefanatos. 11th Extended Semantic Web Conference (ESWC2014) – Demo Track, Anissaras, Crete, Greece, May 2014, 2014 

Towards a Framework for Managing Evolving Information Resources on the Data Web. Marios Meimaris, George Papastefanatos, Christos Pateritsas, Theodora Galani, Yannis Stavrakas. 1st International Workshop on Dataset PROFIling & fEderated Search for Linked Data (PROFILES) 2014, collocated with ESWC 2014, electronic proceedings in CEUR-WS vol. 1151, 2014 

Containment and Complementarity Relationships in Multidimensional Linked Open Data. Marios Meimaris, George Papastefanatos. In Semantic Statistics (SEMSTATS) 2014, collocated with ISWC 2014, electronic proceedings in CEUR-WS.org, 2014 

Insights in Global Public Spending. Michalis Vafopoulos, Marios Meimaris, Jose Maria Alvarez Rodriguez, Ioannis Xidias, Michalis Klonaras, Giorgos Vafeiadis. In I-SEMANTICS 2013 Proceedings of the 9th International Conference on Semantic Systems, pp. 135-139, 2014 

Challenges and Opportunities in the Evolving Data web. George Papastefanatos. 1st International Workshop on Modeling and Management of Big Data (MoBiD ), November 13, 2013, Hong Kong, 2013

Charting the digital library evaluation domain with a semantically enhanced mining methodology. Eleni Afiontzi, Giannis Kazadeis, Leonidas Papachristopoulos, Michalis Sfakakis, Giannis Tsakonas, Christos Papatheodorou . Proceedings of the 13th ACM/IEE-CS joint conference on Digital libraries, JCDL \'13, Indianapolis, Indiana, USA, July 2013, Pages: 125-134, 2013 

Achieving Interoperability between the CARARE schema for Monuments and Sites and the Europeana Data Model. Antoine Isaac, Valentine Charles, Kate Fernie, Costis Dallas, Dimitris Gavrilis, Stavros Angelis . Proceedings of the International Conference on Dublin Core and Metadata Applications, DC-2013, Lisbon, Portugal, September 2013, Pages: 115-125, 2013 

RDivF: Diversifying Keyword Search on RDF Graphs. • Nikos Bikakis, Giorgos Giannopoulos, John Liagouris, Dimitrios Skoutas, Theodore Dalamagas, and Timos Sellis. 17th International Conference on Theory and Practice of Digital Libraries (TPDL '13), 2013 

Publishing Census as Linked Open Data. A Case Study. Irene Petrou , George Papastefanatos, Theodore Dalamagas . 2nd International Workshop on Open Data (WOD13), 2013

GeoKnow: Leveraging Geospatial Data in the Web of Data. Alejandra Garcia-Rojas, Spiros Athanasiou, Jens Lehmann, Daniel Hladky. Open Data on the Web (ODW) Workshop, Shoreditch, London, 2013, 2013 

Preservation of Social Web Content based on Entity Extraction and Consolidation. Stefan Dietze, Diana Maynard, Elena Demidova, Thomas Risse, Wim Peters, Katerina Doka, and Yannis Stavrakas. International Workshop on Semantic Digital Archives (SDA 2012), Paphos, Cyprus, September 2012, 2012 

Diachronic Linked Data: Towards Long-Term Preservation of Structured Interrelated Information. Yannis Stavrakas, George Papastefanatos, Theodore Dalamagas and Vassilis Christophides. International Workshop on Open Data (WOD 2012), Nantes, France, May 25 2012, 2012

Publishing Life Science Data as Linked Open Data: the Case Study of miRBase. Theodore Dalamagas, Nikos Bikakis, George Papastefanatos, Yannis Stavrakas and Artemis Hatzigeorgiou. International Workshop on Open Data (WOD 2012), Nantes, France, May 25 2012, 2012

SPARQL-RW: Transparent Query Access over Mapped RDF Data Sources. Makris Konstantinos, Bikakis Nikos, Gioldasis Nektarios, Christodoulakis Stavros. Proceedings of the 15th International Conference on Extending Database Technology (EDBT '12), 2012 

Blocking and Filtering Techniques for Entity Resolution: A Survey. George Papadakis, Dimitrios Skoutas, Emmanouil Thanos, Themis Palpanas. ACM Comput. Surv. 53(2): 31:1-31:42, 2020 

LinkZoo: A Collaborative Resource Management Tool Based on Linked Data. Giorgos Alexiou, Marios Meimaris, George Papastefanatos, Ioannis Anagnostopoulos. International Journal on Semantic Web and Information Systems (IJSWIS) Volume 16, Issue 3, 1-19 (2020)., 2020 

Solon: A Holistic Approach for Modelling, Managing and Mining Legal Sources. Marios Koniaris, George Papastefanatos, Ioannis Anagnostopoulos. Algorithms Journal, 11 (12), 196, 2018 

A Hierarchical Aggregation Framework for Efficient Multilevel Visual Exploration and Analysis. Nikos Bikakis, George Papastefanatos, Melina Skourla, Timos Sellis. Semantic Web Journal (SWJ) vol. Preprint, no. Preprint, pp. 1-41, 2016, 2016 

Exposing INSPIRE on the Semantic Web. Kostas Patroumpas, Nikos Georgomanolis, Thodoris Stratiotis, Michail Alexakis, Spiros Athanasiou,. Journal of Web Semantics, Special Issue on Geospatial Semantics, 2015 

Towards a methodology for publishing Linked Open Statistical Data. Irene Petrou, Marios Meimaris, George Papastefanatos. eJournal of eDemocracy and Open Government (JeDEM), Vol 6, No 1 (2014), 2014 

Publishing Greek Census Data as Linked Open Data. Irene Petrou, George Papastefanatos . ERCIM News 2014(96), 2014 

Public spending as LOD: the case of Greece. Michalis Vafopoulos, Marios Meimaris, Ioannis Anagnostopoulos, Agis Papantoniou, Ioannis Xidias, Giorgos Alexiou, Giorgos Vafeiadis, Michalis Klonaras, Vassili Loumos. In Semantic Web Journal, available at SSRN 2233998, 2014 

GeoKnow: Making the Web an Exploratory Place for Geospatial Knowledge. Spiros Athanasiou, Daniel Hladky, Giorgos Giannopoulos, Alejandra Garcia Rojas and Jens Lehmann. Ercim news 2014, 2014(96), 2014 

The SPARQL2XQuery Interoperability Framework. Bikakis Nikos, Tsinaraki Chrisa, Stavrakantonakis Ioannis, Gioldasis Nektarios, Christodoulakis Stavros. World Wide Web Journal (to appear), 2013 

A Query Language for Multi-version Data Web Archives. Marios Meimaris, George Papastefanatos, Stratis Viglas, Yannis Stavrakas and Christos Pateritsas. TR-IMIS-2015-2, 2015 

Personalized, Semantic and Exploratory Data Analysis / Εξατομικευμένη, Σημασιολογική και Διερευνητική Ανάλυση Δεδομένων. Nikos Bikakis . National Technical University of Athens, Greece, 2016 

Linked Data Visualization Book Techniques, Tools and Big Data . Laura Po, Nikos Bikakis, Federico Desimoni and George Papastefanatos. Series in Synthesis Lectures on the Semantic Web, In Morgan & Claypool Publishers, 2020. (ISBN: 9781681737256 (softcover) | 9781681737263 (ebook) ISBN: 9781681737270 (hardcover), 2020 

Managing Geospatial Linked Data in the GeoKnow Project. Jens Lehmann, Spiros Athanasiou, Andreas Both, Alejandra Garcia Rojas, Giorgos Giannopoulos, Daniel Hladky, Jon Jay Le Grange, Axel-Cyrille Ngonga-Ngomo, Mohamed Ahmed Sherif, Claus Stadler, Matthias Wauer, Patrick Westphal. The Semantic Web in Earth and Space Science. Current Status and Future Directions, Vol. 20 of Studies on the Semantic Web. IOS Press., 2015 

The XML and Semantic Web Worlds: Technologies, Interoperability and Integration. A survey of the State of the Art. Bikakis Nikos, Tsinaraki Chrisa, Gioldasis Nektarios, Stavrakantonakis Ioannis, Christodoulakis Stavros. Semantic Hyper/Multi-media Adaptation: Schemes and Applications, Springer 2013, 2013