Charalampos Nikolaou

36 papers A* 4B 4Journal 11Unranked 15
YearRankTypeTitle / Venue / Authors
2025 B conf
Developing a Cyber-Physical-Social Metaverse System for Interactive Cultural Heritage Experiences.
COMPSAC
Louis Nisiotis, Charalampos Nikolaou, Nikita Markov, Aimilios Hadjiliasi
2019 J jnl
An ontology-mediated analytics-aware approach to support monitoring and diagnostics of static and streaming data.
J. Web Semant.
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
2019 — conf
Bag Semantics of DL-Lite with Functionality Axioms.
ISWC (1)
Gianluca Cima, Charalampos Nikolaou, Egor V. Kostylev, Mark Kaminski, Bernardo Cuenca Grau, Ian Horrocks
2019 — conf
Bagging the DL-Lite Family Further.
Description Logics
Gianluca Cima, Charalampos Nikolaou, Egor V. Kostylev, Mark Kaminski, Bernardo Cuenca Grau, Ian Horrocks
2019 J jnl
Foundations of ontology-based data access under bag semantics.
Artif. Intell.
Charalampos Nikolaou, Egor V. Kostylev, George Konstantinidis, Mark Kaminski, Bernardo Cuenca Grau, Ian Horrocks
2019 — ch.
Linked Geospatial Data.
Encyclopedia of Big Data Technologies
Manolis Koubarakis, Konstantina Bereta, Charalampos Nikolaou, George Stamoulis
2019 A* conf
Satisfaction and Implication of Integrity Constraints in Ontology-based Data Access.
IJCAI
Charalampos Nikolaou, Bernardo Cuenca Grau, Egor V. Kostylev, Mark Kaminski, Ian Horrocks
2019 — conf
Towards a Decentralized, Trusted, Intelligent and Linked Public Sector: A Report from the Greek Trenches.
WWW (Companion Volume)
Themis Beris, Iosif Angelidis, Ilias Chalkidis, Charalampos Nikolaou, Christos Papaloukas, Panagiotis Soursos, Manolis Koubarakis
2017 — conf
Modeling and Querying Greek Legislation Using Semantic Web Technologies.
ESWC (1)
Ilias Chalkidis, Charalampos Nikolaou, Panagiotis Soursos, Manolis Koubarakis
2017 A* conf
The Bag Semantics of Ontology-Based Data Access.
IJCAI
Charalampos Nikolaou, Egor V. Kostylev, George Konstantinidis, Mark Kaminski, Bernardo Cuenca Grau, Ian Horrocks
2017 J jnl
The Bag Semantics of Ontology-Based Data Access.
CoRR
Charalampos Nikolaou, Egor V. Kostylev, George Konstantinidis, Mark Kaminski, Bernardo Cuenca Grau, Ian Horrocks
2016 J jnl
Querying incomplete information in RDF with SPARQL.
Artif. Intell.
Charalampos Nikolaou, Manolis Koubarakis
2016 J jnl
Towards Analytics Aware Ontology Based Access to Static and Streaming Data (Extended Version).
CoRR
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
2016 — conf
Towards Analytics Aware Ontology Based Access to Static and Streaming Data.
ISWC (2)
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
2015 — —
Incomplete information in RDF databases with an emphasis on the geospatial domain
Charalampos Nikolaou
2015 J jnl
Sextant: Visualizing time-evolving linked geospatial data.
J. Web Semant.
Charalampos Nikolaou, Kallirroi Dogani, Konstantina Bereta, George Garbis, Manos Karpathiotakis, Kostis Kyzirakos, Manolis Koubarakis
2015 J jnl
Very-High-Resolution SAR Images and Linked Open Data Analytics Based on Ontologies.
IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens.
Daniela Espinoza-Molina, Charalampos Nikolaou, Corneliu Octavian Dumitru, Konstantina Bereta, Manolis Koubarakis, Gottfried Schwarz, Mihai Datcu
2014 A* conf
A Reasoner for the RCC-5 and RCC-8 Calculi Extended with Constants.
AAAI
Stella Giannakopoulou, Charalampos Nikolaou, Manolis Koubarakis
2014 — conf
Big, Linked and Open Data: Applications in the German Aerospace Center.
ESWC (Satellite Events)
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
2014 J jnl
Building Virtual Earth Observatories Using Scientific Database and Semantic Web Technologies.
ERCIM News
Kostis Kyzirakos, Stefan Manegold, Charalampos Nikolaou, Manolis Koubarakis
2014 A* conf
Fast Consistency Checking of Very Large Real-World RCC-8 Constraint Networks Using Graph Partitioning.
AAAI
Charalampos Nikolaou, Manolis Koubarakis
2014 J jnl
Wildfire monitoring using satellite images, ontologies and linked geospatial data.
J. Web Semant.
Kostis Kyzirakos, Manos Karpathiotakis, George Garbis, Charalampos Nikolaou, Konstantina Bereta, Ioannis Papoutsis, Themos Herekakis, Dimitrios Michail, Manolis Koubarakis, Charalambos Kontoes
2013 — conf
Incomplete Information in RDF.
RR
Charalampos Nikolaou, Manolis Koubarakis
2013 B conf
Querying Incomplete Geospatial Information in RDF.
SSTD
Charalampos Nikolaou, Manolis Koubarakis
2013 — conf
SexTant: Visualizing Time-Evolving Linked Geospatial Data.
ISWC (Posters & Demos)
Konstantina Bereta, Charalampos Nikolaou, Manos Karpathiotakis, Kostis Kyzirakos, Manolis Koubarakis
2013 — conf
Sextant: Browsing and Mapping the Ocean of Linked Geospatial Data.
ESWC (Satellite Events)
Charalampos Nikolaou, Kallirroi Dogani, Kostis Kyzirakos, Manolis Koubarakis
2013 B conf
The Spatiotemporal RDF Store Strabon.
SSTD
Kostis Kyzirakos, Manos Karpathiotakis, Konstantina Bereta, George Garbis, Charalampos Nikolaou, Panayiotis Smeros, Stella Giannakopoulou, Kallirroi Dogani, Manolis Koubarakis
2012 — conf
Building Virtual Earth Observatories Using Ontologies and Linked Geospatial Data.
RR
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
2012 — conf
Building Virtual Earth Observatories Using Ontologies, Linked Geospatial Data and Knowledge Discovery Algorithms.
OTM Conferences (2)
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
2012 — conf
Data Models and Query Languages for Linked Geospatial Data.
Reasoning Web
Manolis Koubarakis, Manos Karpathiotakis, Kostis Kyzirakos, Charalampos Nikolaou, Michael Sioutis
2012 J jnl
Incomplete Information in RDF
CoRR
Charalampos Nikolaou, Manolis Koubarakis
2012 — conf
Querying Linked Geospatial Data with Incomplete Information.
Terra Cognita@ISWC
Charalampos Nikolaou, Manolis Koubarakis
2012 — conf
Real Time Fire Monitoring Using Semantic Web and Linked Data Technologies.
ISWC (Posters & Demos)
Kostis Kyzirakos, Manos Karpathiotakis, George Garbis, Charalampos Nikolaou, Konstantina Bereta, Michael Sioutis, Ioannis Papoutsis, Themistoklis Herekakis, Dimitrios Michail, Manolis Koubarakis, Charalambos Kontoes
2012 J jnl
TELEIOS: A Database-Powered Virtual Earth Observatory.
Proc. VLDB Endow.
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
2011 B conf
The Papyrus Digital Library: Discovering History in the News.
TPDL
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
2010 — conf
Browsing news archives from the perspective of history: The Papyrus Browser Historiographical Issues View.
WIAMIS
Manolis Platakis, Charalampos Nikolaou, Akrivi Katifori, Manolis Koubarakis, Yannis E. Ioannidis