Theodoros Chondrogiannis
Foto:
Kai T. Dragland / NTNU
309 IT-bygget Gløshaugen, Trondheim
About
Theodoros Chondrogiannis is an associate professor in the Department of Computer Science at NTNU. Previously, Theodoros studied computer science in Greece. He earned his 4-year BSc in Computer Science and Technology, with a focus on Software Systems, from the Department of Computer Science and Technology at the University of Peloponnesein 2009, and his MSc in Advanced Information Systems from the Department of Informatics and Telecommunications at the National Kapodistrian University of Athens in 2013. Afterward, Theodoros received a PhD fellowship from the Free University of Bozen-Bolzano and began his PhD in the Faculty of Computer Science. In June 2017, he completed his PhD and received his doctorate for his thesis, Efficient Algorithms for Route Planning Problems on Road Networks. After his PhD, Theodoros joined the Database and Information Systems group of the University of Konstanz in December 2017 as a postdoctoral researcher. He left Konstanz in December 2024 to join NTNU.
Research
Theodoros' research interests lie in managing graph and network data, route planning, and large-scale data analytics. His work mainly focuses on efficient algorithms for path planning problems in spatial and transportation networks, query processing over complex graph-structured data, and mobility analysis using trajectory data. More recently, his research has expanded toward machine learning techniques for database systems, including cardinality estimation and graph query optimization.
Publications
2026
-
Bornholdt, Johann;
Chondrogiannis, Theodoros;
Grossniklaus, Michael.
(2026)
Trajectory data management: A data model and predicate logic with operators for spatio-temporal query processing.
Information Systems
Academic article
2025
-
Aytimur, Mehmet;
Chondrogiannis, Theodoros;
Grossniklaus, Michael.
(2025)
SPACE: Cardinality Estimation for Path Queries Using Cardinality-Aware Sequence-based Learning.
Proceedings of the ACM on Management of Data (PACMMOD)
Academic article
Journal publications
-
Bornholdt, Johann;
Chondrogiannis, Theodoros;
Grossniklaus, Michael.
(2026)
Trajectory data management: A data model and predicate logic with operators for spatio-temporal query processing.
Information Systems
Academic article
-
Aytimur, Mehmet;
Chondrogiannis, Theodoros;
Grossniklaus, Michael.
(2025)
SPACE: Cardinality Estimation for Path Queries Using Cardinality-Aware Sequence-based Learning.
Proceedings of the ACM on Management of Data (PACMMOD)
Academic article