Alexander Bigerl

Research Staff

alexander.bigerl@uni-paderborn.de

Matrix (Chat)

@bigerl:chat.dice-research.org

Phone

+49 5251 603342

Office

FU.323

Publications

Ontolearn---A Framework for Large-scale OWL Class Expression Learning in Python

By Caglar Demir, Alkid Baci, N'Dah Jean Kouagou, Leonie Nora Sieger, Stefan Heindorf, Simon Bin, Lukas Blübaum, Alexander Bigerl, Axel-Cyrille Ngonga Ngomo

Journal of Machine Learning Research, JMLR, 2025, #article

Evaluating Negation with Multi-way Joins Accelerates Class Expression Learning

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

Machine Learning and Knowledge Discovery in Databases. Research Track - European Conference, ECML PKDD 2024, Vilnius, Lithuania, September 9-13, 2024, Proceedings, Part VI, 2024, #inproceedings

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

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

ESWC, 2024, #inproceedings

Efficient Updates for Worst-Case Optimal Join Triple Stores

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

The Semantic Web -- ISWC 2024, 2024, #inproceedings

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

By Nikolaos Karalis, Alexander Bigerl, Axel-Cyrille Ngonga Ngomo

SEMANTiCS, 2023, #inproceedings

Hashing the Hypertrie: Space- and Time-Efficient Indexing for SPARQL in Tensors

By Alexander Bigerl, Lixi Conrads, Charlotte Behning, Muhammad Saleem, Axel-Cyrille Ngonga Ngomo

The Semantic Web -- ISWC 2022, 2022, #inproceedings

Efficient RDF Knowledge Graph Partitioning Using Querying Workload

By Adnan Akhter, Muhammad Saleem, Alexander Bigerl, Axel-Cyrille Ngonga Ngomo

Proceedings of the 11th on Knowledge Capture Conference, 2021, #inproceedings

Tentris -- A Tensor-Based Triple Store