Charalampos Nikolaou

According to our database, Charalampos Nikolaou authored at least 33 papers between 2010 and 2019.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2019

Linked Geospatial Data.

Manolis Koubarakis, Konstantina Bereta, Charalampos Nikolaou, George Stamoulis

Proceedings of the Encyclopedia of Big Data Technologies., 2019

An ontology-mediated analytics-aware approach to support monitoring and diagnostics of static and streaming data.

Evgeny Kharlamov, Yannis Kotidis, Theofilos Mailis, Christian Neuenstadt, Charalampos Nikolaou, Özgür L. Özçep, Christoforos Svingos, Dmitriy Zheleznyakov, Yannis E. Ioannidis, Steffen Lamparter, Ralf Möller, Arild Waaler

J. Web Semant., 2019

Foundations of ontology-based data access under bag semantics.

Charalampos Nikolaou, Egor V. Kostylev, George Konstantinidis, Mark Kaminski, Bernardo Cuenca Grau, Ian Horrocks

Artif. Intell., 2019

Towards a Decentralized, Trusted, Intelligent and Linked Public Sector: A Report from the Greek Trenches.

Themis Beris, Iosif Angelidis, Ilias Chalkidis, Charalampos Nikolaou, Christos Papaloukas, Panagiotis Soursos, Manolis Koubarakis

Proceedings of the Companion of The 2019 World Wide Web Conference, 2019

Bag Semantics of DL-Lite with Functionality Axioms.

Gianluca Cima, Charalampos Nikolaou, Egor V. Kostylev, Mark Kaminski, Bernardo Cuenca Grau, Ian Horrocks

Proceedings of the Semantic Web - ISWC 2019, 2019

Satisfaction and Implication of Integrity Constraints in Ontology-based Data Access.

Charalampos Nikolaou, Bernardo Cuenca Grau, Egor V. Kostylev, Mark Kaminski, Ian Horrocks

Proceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence, 2019

Bagging the DL-Lite Family Further.

Gianluca Cima, Charalampos Nikolaou, Egor V. Kostylev, Mark Kaminski, Bernardo Cuenca Grau, Ian Horrocks

Proceedings of the 32nd International Workshop on Description Logics, 2019

2017

The Bag Semantics of Ontology-Based Data Access.

Charalampos Nikolaou, Egor V. Kostylev, George Konstantinidis, Mark Kaminski, Bernardo Cuenca Grau, Ian Horrocks

Proceedings of the Twenty-Sixth International Joint Conference on Artificial Intelligence, 2017

Modeling and Querying Greek Legislation Using Semantic Web Technologies.

Ilias Chalkidis, Charalampos Nikolaou, Panagiotis Soursos, Manolis Koubarakis

Proceedings of the Semantic Web - 14th International Conference, 2017

2016

Towards Analytics Aware Ontology Based Access to Static and Streaming Data (Extended Version).

Evgeny Kharlamov, Yannis Kotidis, Theofilos Mailis, Christian Neuenstadt, Charalampos Nikolaou, Özgür L. Özçep, Christoforos Svingos, Dmitriy Zheleznyakov, Steffen Lamparter, Ian Horrocks, Yannis E. Ioannidis, Ralf Möller

CoRR, 2016

Querying incomplete information in RDF with SPARQL.

Charalampos Nikolaou, Manolis Koubarakis

Artif. Intell., 2016

Towards Analytics Aware Ontology Based Access to Static and Streaming Data.

Evgeny Kharlamov, Yannis Kotidis, Theofilos Mailis, Christian Neuenstadt, Charalampos Nikolaou, Özgür L. Özçep, Christoforos Svingos, Dmitriy Zheleznyakov, Sebastian Brandt, Ian Horrocks, Yannis E. Ioannidis, Steffen Lamparter, Ralf Möller

Proceedings of the Semantic Web - ISWC 2016, 2016

2015

Incomplete information in RDF databases with an emphasis on the geospatial domain

Charalampos Nikolaou

PhD thesis, 2015

Sextant: Visualizing time-evolving linked geospatial data.

Charalampos Nikolaou, Kallirroi Dogani, Konstantina Bereta, George Garbis, Manos Karpathiotakis, Kostis Kyzirakos, Manolis Koubarakis

J. Web Semant., 2015

Very-High-Resolution SAR Images and Linked Open Data Analytics Based on Ontologies.

Daniela Espinoza-Molina, Charalampos Nikolaou, Corneliu Octavian Dumitru, Konstantina Bereta, Manolis Koubarakis, Gottfried Schwarz, Mihai Datcu

IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2015

2014

Wildfire monitoring using satellite images, ontologies and linked geospatial data.

Kostis Kyzirakos, Manos Karpathiotakis, George Garbis, Charalampos Nikolaou, Konstantina Bereta, Ioannis Papoutsis, Themos Herekakis, Dimitrios Michail, Manolis Koubarakis, Charalambos Kontoes

J. Web Semant., 2014

Building Virtual Earth Observatories Using Scientific Database and Semantic Web Technologies.

Kostis Kyzirakos, Stefan Manegold, Charalampos Nikolaou, Manolis Koubarakis

ERCIM News, 2014

Big, Linked and Open Data: Applications in the German Aerospace Center.

Charalampos Nikolaou, Kostis Kyzirakos, Konstantina Bereta, Kallirroi Dogani, Stella Giannakopoulou, Panayiotis Smeros, George Garbis, Manolis Koubarakis, Daniela Espinoza-Molina, Corneliu Octavian Dumitru, Gottfried Schwarz, Mihai Datcu

Proceedings of the Semantic Web: ESWC 2014 Satellite Events, 2014

Fast Consistency Checking of Very Large Real-World RCC-8 Constraint Networks Using Graph Partitioning.

Charalampos Nikolaou, Manolis Koubarakis

Proceedings of the Twenty-Eighth AAAI Conference on Artificial Intelligence, 2014

A Reasoner for the RCC-5 and RCC-8 Calculi Extended with Constants.

Stella Giannakopoulou, Charalampos Nikolaou, Manolis Koubarakis

Proceedings of the Twenty-Eighth AAAI Conference on Artificial Intelligence, 2014

2013

Querying Incomplete Geospatial Information in RDF.

Charalampos Nikolaou, Manolis Koubarakis

Proceedings of the Advances in Spatial and Temporal Databases, 2013

The Spatiotemporal RDF Store Strabon.

Kostis Kyzirakos, Manos Karpathiotakis, Konstantina Bereta, George Garbis, Charalampos Nikolaou, Panayiotis Smeros, Stella Giannakopoulou, Kallirroi Dogani, Manolis Koubarakis

Proceedings of the Advances in Spatial and Temporal Databases, 2013

SexTant: Visualizing Time-Evolving Linked Geospatial Data.

Konstantina Bereta, Charalampos Nikolaou, Manos Karpathiotakis, Kostis Kyzirakos, Manolis Koubarakis

Proceedings of the ISWC 2013 Posters & Demonstrations Track, 2013

Incomplete Information in RDF.

Charalampos Nikolaou, Manolis Koubarakis

Proceedings of the Web Reasoning and Rule Systems - 7th International Conference, 2013

Sextant: Browsing and Mapping the Ocean of Linked Geospatial Data.

Charalampos Nikolaou, Kallirroi Dogani, Kostis Kyzirakos, Manolis Koubarakis

Proceedings of the Semantic Web: ESWC 2013 Satellite Events, 2013

2012

TELEIOS: A Database-Powered Virtual Earth Observatory.

Manolis Koubarakis, Kostis Kyzirakos, Manos Karpathiotakis, Charalampos Nikolaou, Stavros Vassos, George Garbis, Michael Sioutis, Konstantina Bereta, Dimitrios Michail, Charalambos Kontoes, Ioannis Papoutsis, Themos Herekakis, Stefan Manegold, Martin L. Kersten, Milena Ivanova, Holger Pirk, Ying Zhang, Mihai Datcu, Gottfried Schwarz, Corneliu Octavian Dumitru, Daniela Espinoza-Molina, Katrin Molch, Ugo Di Giammatteo, Manuela Sagona, Sergio Perelli, Thorsten Reitz, Eva Klien, Robert Gregor

Proc. VLDB Endow., 2012

Querying Linked Geospatial Data with Incomplete Information.

Charalampos Nikolaou, Manolis Koubarakis

Proceedings of the Terra Cognita Workshop on Foundations, 2012

Real Time Fire Monitoring Using Semantic Web and Linked Data Technologies.

Kostis Kyzirakos, Manos Karpathiotakis, George Garbis, Charalampos Nikolaou, Konstantina Bereta, Michael Sioutis, Ioannis Papoutsis, Themistoklis Herekakis, Dimitrios Michail, Manolis Koubarakis, Charalambos Kontoes

Proceedings of the ISWC 2012 Posters & Demonstrations Track, 2012

Data Models and Query Languages for Linked Geospatial Data.

Manolis Koubarakis, Manos Karpathiotakis, Kostis Kyzirakos, Charalampos Nikolaou, Michael Sioutis

Proceedings of the Reasoning Web. Semantic Technologies for Advanced Query Answering, 2012

Building Virtual Earth Observatories Using Ontologies and Linked Geospatial Data.

Manolis Koubarakis, Manos Karpathiotakis, Kostis Kyzirakos, Charalampos Nikolaou, Stavros Vassos, George Garbis, Michael Sioutis, Konstantina Bereta, Stefan Manegold, Martin L. Kersten, Milena Ivanova, Holger Pirk, Ying Zhang, Charalambos Kontoes, Ioannis Papoutsis, Themistoklis Herekakis, Dimitrios Michail, Mihai Datcu, Gottfried Schwarz, Corneliu Octavian Dumitru, Daniela Espinoza-Molina, Katrin Molch, Ugo Di Giammatteo, Manuela Sagona, Sergio Perelli, Eva Klien, Thorsten Reitz, Robert Gregor

Proceedings of the Web Reasoning and Rule Systems - 6th International Conference, 2012

Building Virtual Earth Observatories Using Ontologies, Linked Geospatial Data and Knowledge Discovery Algorithms.

Manolis Koubarakis, Michael Sioutis, George Garbis, Manos Karpathiotakis, Kostis Kyzirakos, Charalampos Nikolaou, Konstantina Bereta, Stavros Vassos, Corneliu Octavian Dumitru, Daniela Espinoza-Molina, Katrin Molch, Gottfried Schwarz, Mihai Datcu

Proceedings of the On the Move to Meaningful Internet Systems: OTM 2012, 2012

2011

The Papyrus Digital Library: Discovering History in the News.

Akrivi Katifori, Charalampos Nikolaou, Manolis Platakis, Yannis E. Ioannidis, A. Tympas, Manolis Koubarakis, Nikos Sarris, V. Tountopoulos, Efstratios Tzoannos, Siarhei Bykau, Nadzeya Kiyavitskaya, Chrisa Tsinaraki, Yannis Velegrakis

Proceedings of the Research and Advanced Technology for Digital Libraries, 2011

2010

Browsing news archives from the perspective of history: The Papyrus Browser Historiographical Issues View.

Manolis Platakis, Charalampos Nikolaou, Akrivi Katifori, Manolis Koubarakis, Yannis E. Ioannidis

Proceedings of the 11th International Workshop on Image Analysis for Multimedia Interactive Services, 2010