Martin Fajčík

Postdoctoral Researcher

prof_pic.jpg

Office no. L220.2

Božetěchova 1/2

612 66 Brno, Czech Republic

I am a posdoctoral researcher in Natural Language Processing from Knowledge Technology Research Group active at FIT-BUT in Brno, Czech Republic. My faculty webpage is available here.

My main research interests are problems related to Large Language Models, Information Retrieval, Question Answering and Fact-Checking. This includes topics such as latent variable models, document retrieval/re-ranking, machine comprehension, cross-lingual continued pretraining or methods for faithful explainability.

If you are a student looking for BSc/MSc thesis supervision in Natural Language Processing and you are not afraid of doing the challenging research, feel free to contact me.

news

Nov 11, 2025 Today, I gave talk about Arithmetic Intensity in the context of different attention mechanisms at Jiao Tong University in Shanghai. Recording available here.
Nov 7, 2025 Our work on BenCzechMark, the first Czech LLM benchmark with rigorous duel mechanism evaluation was accepted into TACL journal and presented on EMNLP today!
Jun 26, 2025 Today I was awarded with the Bronze the Commemorative Medal of FIT BUT. I am thankful to BUT, but does this mean I am getting old? :)
Apr 25, 2024 Today, I have defended my dissertation on Automated Factoid Question Answering and Fact-Checking in Natural Language (thesis here). The thesis was also awarded by Dean’s award!
Mar 13, 2024 We released BUT-FIT/csmpt7b, the first Czech-only 7b LLM, together with most of it’s training corpus and checkpoints. We also released BUT-FIT/CSTinyLlama-1.2B to complement our BUT-FIT model family.