Dr. Jan Speller

Current affiliations

Junior professorship of practical computer science - modern aspects of data processing / data science (Prof. Braun)

Curriculum Vitae (CV)

Explainable Artificial Intelligence (XAI)
Hierarchical analysis of factor graphs
Statistical boosting algorithms
Methods for robust regression

Academic Education
2019 - 2023	Doctorate, University of Bonn
2016 - 2018	Studies Mathematics, University of Heidelberg, Degree M.Sc.
2012 - 2016	Studies Mathematics, University of Heidelberg, Degree B.Sc.

Publications

Approximate Lifted Model Construction Luttermann, Malte; Speller, Jan; Gehrke, Marcel; Braun, Tanya; Möller, Ralf; Hartwig, Mattis (2025) In: Kwok, James (eds.), IJCAI-25 Proceedings of the 34th International Joint Conference on Artificial Intelligence, 9077-9085. Montreal: / IJCAI Organization. doi:10.24963/ijcai.2025/1009 Research article in edited proceedings (conference) \| Peer reviewed \| Published
Compression versus Accuracy: A Hierarchy of Lifted Models Speller, Jan; Luttermann, Malte; Gehrke, Marcel; Braun, Tanya (2025) In: Lynce, I.; et al. (eds.), ECAI-25 Proceedings of the 28th European Conference on Artificial Intelligence, 5051-5058. Online: IOS Press. doi:10.3233/FAIA251420 Research article in edited proceedings (conference) \| Peer reviewed \| Published
Towards Explainability of Approximate Lifted Model Construction: A Geometric Perspective Speller, Jan; Luttermann, Malte; Gehrke, Marcel; Braun, Tanya (2025) In: Melzer, Sylvia; Peukert, Hagen; Thiemann, Stefan; Bender, Magnus; Özçep, Özgür L.; Russwinkel, Nele; Sauerwald, Kai; Wolter, Diedrich (eds.), Proceedings of the Joint Workshop on Humanities-Centred Artificial Intelligence and Formal & Cognitive Reasoning co-located with 48th German Conference on Artificial Intelligence. CEUR-WS. Research article in digital collection (conference) \| Peer reviewed \| Published
Robust gradient boosting for generalized additive models for location, scale and shape Speller, Jan; Staerk, Christian; Gude, Francisco; Mayr, Andreas; (2023) Other scientific publication \| Peer reviewed \| Published
Linear or smooth? Enhanced model choice in boosting via deselection of base-learners Mayr, Andreas; Wistuba, Tobias; Speller, Jan; Gude, Francisco; Hofner, Benjamin; (2023) In: Statistical Modelling, 23(5-6), 441-455. doi:10.1177/1471082X231170045 Research article (journal) \| Peer reviewed \| Published

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Projects

HAPPI - Human-aware PGMs and Probabilistic Inference via Lifted Model Reconciliation (HAPPI)

Duration: 15/03/2024 - 31/12/2026

Funded by: MKW - Förderlinie „Künstliche Intelligenz/Maschinelles Lernen“ - KI-Starter

Type of project: Individual project

Talks

Compression versus Accuracy: A Hierarchy of Lifted Models Speller, Jan; Luttermann, Malte; Gehrke, Marcel; Braun, Tanya (29/10/2025) 28th European Conference on Artificial Intelligence (ECAI 2025), Bologna Type of talk: scientific talk
Towards Explainability of Approximate Lifted Model Construction: A Geometric Perspective Speller, Jan (16/09/2025) Joint Workshop on Humanities-Centred Artificial Intelligence and Formal & Cognitive Reasoning co-located with 48th…, Potsdam Type of talk: scientific talk