Nikolaos Karalis

According to our database, Nikolaos Karalis authored at least 10 papers between 2018 and 2024.

Collaborative distances:

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

2024

Evaluating Negation with Multi-way Joins Accelerates Class Expression Learning.

Nikolaos Karalis, Alexander Bigerl, Caglar Demir, Liss Heidrich, Axel-Cyrille Ngonga Ngomo

Proceedings of the Machine Learning and Knowledge Discovery in Databases. Research Track, 2024

Efficient Evaluation of Conjunctive Regular Path Queries Using Multi-way Joins.

Nikolaos Karalis, Alexander Bigerl, Liss Heidrich, Mohamed Ahmed Sherif, Axel-Cyrille Ngonga Ngomo

Proceedings of the Semantic Web - 21st International Conference, 2024

2023

Class Expression Learning with Multiple Representations.

Axel-Cyrille Ngonga Ngomo, Caglar Demir, N'Dah Jean Kouagou, Stefan Heindorf, Nikolaos Karalis, Alexander Bigerl

Proceedings of the Compendium of Neurosymbolic Artificial Intelligence, 2023

Native Execution of GraphQL Queries over RDF Graphs Using Multi-Way Joins.

Nikolaos Karalis, Alexander Bigerl, Axel-Cyrille Ngonga Ngomo

Proceedings of the Knowledge Graphs: Semantics, Machine Learning, and Languages, 2023

2022

Extending YAGO4 Knowledge Graph with Geospatial Knowledge.

Maria Despoina Siampou, Nikolaos Karalis, Manolis Koubarakis

Proceedings of the 5th International Workshop on Geospatial Linked Data, 2022

2020

Template-Based Question Answering over Linked Geospatial Data.

Dharmen Punjani, Markos Iliakis, Theodoros Stefou, Kuldeep Singh, Andreas Both, Manolis Koubarakis, Iosif Angelidis, Konstantina Bereta, Themis Beris, Dimitris Bilidas, Theofilos Ioannidis, Nikolaos Karalis, Christoph Lange, Despina-Athanasia Pantazi, Christos Papaloukas, Georgios Stamoulis

CoRR, 2020

2019

Extending the YAGO2 Knowledge Graph with Precise Geospatial Knowledge.

Nikolaos Karalis, Georgios M. Mandilaras, Manolis Koubarakis

Proceedings of the Semantic Web - ISWC 2019, 2019

2018

GeoTriples: Transforming geospatial data into RDF graphs using R2RML and RML mappings.

Kostis Kyzirakos, Dimitrianos Savva, Ioannis Vlachopoulos, Alexandros Vasileiou, Nikolaos Karalis, Manolis Koubarakis, Stefan Manegold

J. Web Semant., 2018

Template-Based Question Answering over Linked Geospatial Data.

Dharmen Punjani, Kuldeep Singh, Andreas Both, Manolis Koubarakis, Iosif Angelidis, Konstantina Bereta, Themis Beris, Dimitris Bilidas, Theofilos Ioannidis, Nikolaos Karalis, Christoph Lange, Despina-Athanasia Pantazi, Christos Papaloukas, George Stamoulis

Proceedings of the 12th Workshop on Geographic Information Retrieval, 2018

Distributed Execution of Spatial SQL Queries.

Konstantinos Giannousis, Konstantina Bereta, Nikolaos Karalis, Manolis Koubarakis

Proceedings of the IEEE International Conference on Big Data (IEEE BigData 2018), 2018