FactSelfCheck: Fact-Level Black-Box Hallucination Detection for LLMs
Albert K. Sawczyn, Jakub Binkowski, Denis P Janiak, Tomasz Kajdanowicz, Bogdan Gabrys
EACL 2026
2026
Profile
Denis Janiak
PhD Student
Research groups
Denis is working towards a PhD in the area of Bayesian representation learning. His interests covers mostly Bayesian, generative and probabilistic methods and their connection to neuroscience and cognition. He received MSc in Computer Science (specialty: Artificial Intelligence) from Wrocław University of Science and Technology in 2021. His has both academia and industry background; currently working in CLARIN project at WUST.
Education
2021
MsC in Computer Science (Artificial Intelligence)
Wroclaw University of Science and Technology
Publications(10)
Rethinking the Evaluation of Alignment Methods: Insights into Diversity, Generalisation, and Safety
Denis P. Janiak, Julia A Moska, Dawid Motyka, Paweł T Walkowiak, Arkadiusz Janz, Karolina Seweryn, Bartosz Żuk
EACL 2026
2026
Factual state discovery benchmark: evaluating fact elicitation in Polish tax law
Mateusz Bystroński, Kamil Tagowski, Denis P Janiak, Julia Farganus, Łukasz M Augustyniak, Tomasz Kajdanowicz, Monika Kajdanowicz
Kerrville, TX : Association for Computational Linguistics, cop. 2026. s. 1262-1279.
2026
Hallucination Detection in LLMs Using Spectral Features of Attention Maps
Jakub Binkowski, Denis P Janiak, Albert K Sawczyn, Tomasz Kajdanowicz, Bogdan Gabrys
Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing
2025
The Illusion of Progress: Re-evaluating Hallucination Detection in LLMs
Denis P. Janiak, Jakub Binkowski, Albert K Sawczyn, Tomasz Kajdanowicz, Bogdan Gabrys, Ravid Shwartz-Ziv
Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing
2025
Enhancing out-of-distribution detection through stochastic embeddings in self-supervised learning
Denis P. Janiak, Jakub Binkowski, Piotr Bielak, Tomasz Kajdanowicz
Lecture notes in computer science
2024
Graph-level representations using ensemble-based readout functions
Jakub Binkowski, Albert K Sawczyn, Denis P Janiak, Piotr Bielak, Tomasz Kajdanowicz
Lecture notes in computer science
2023
This is the Way: Designing and Compiling LEPISZCZE, a Comprehensive NLP Benchmark for Polish
Łukasz M. Augustyniak, Kamil Tagowski, Albert K Sawczyn, Denis P Janiak, Roman D Bartusiak, Adrian Szymczak, Marcin Wątroba, Arkadiusz Janz, Piotr Szymański, Tomasz Kajdanowicz, Maciej Piasecki, Mikołaj Morzy
Advances in Neural Information Processing Systems
2022
Fact-checking: relevance assessment of references in the Polish political domain
Albert K. Sawczyn, Jakub Binkowski, Denis P Janiak, Łukasz M Augustyniak, Tomasz Kajdanowicz
Procedia Computer Science
2021
Fact-checking must go on!
Jakub Binkowski, Denis P Janiak, Albert K Sawczyn, Tomasz Kajdanowicz, Łukasz M Augustyniak
W: ML in PL Conference 2021, virtual-only, 5-7 November 2021. [B.m. : b.wyd., 2021]. s. 1-1.
2021