The Language, Computation, and Cognition Lab (LaCoCo)
<https://lacoco-lab.github.io/home/> at Saarland Informatics Campus
<https://saarland-informatics-campus.de/en/> (Saarbrücken, Germany),
directed by Michael Hahn <https://mhahn.info/>, invites applications for
fully funded PhD and postdoc positions, with a flexible start date.
*
RESEARCH AREAS
*
We’re especially excited about projects on:
* Mathematical foundations of large language models (LLMs), e.g.,
computational complexity, learning theory
* New architectures and efficient reasoning for LLMs
* Mechanistic interpretability
* Theoretical foundations for AI safety
You’ll have substantial freedom to shape your topic within the lab’s scope.
Some representative publications from the past 3 years:
*
Why are Sensitive Functions Hard for Transformers? (ACL 2024,
https://aclanthology.org/2024.acl-long.800/)
*
InversionView: A General-Purpose Method for Reading Information from
Neural Activations (NeurIPS 2024,
https://openreview.net/forum?id=clDGHpx2la)
*
Contextualize-then-Aggregate: Circuits for In-Context Learning in
Gemma-2 2B (COLM 2025, https://openreview.net/forum?id=rGNAyHReSg)
*
Discovering Interpretable Algorithms by Decompiling Transformers to
RASP (ICML 2026, https://arxiv.org/abs/2602.08857)
*
On the Ability of Transformers to Verify Plans (ICML 2026,
https://arxiv.org/pdf/2603.19954)
*ABOUT THE LAB*
Our research has been awarded an Emmy Noether grant (DFG), the Heinz
Maier-Leibnitz Preis (DFG), and paper awards at ACL 2024 and Mechanistic
Interpretability Workshop 2024. We regularly publish at top venues
(e.g., 11 NeurIPS/ICML/ICLR papers over the past year).
Learn more about the lab at https://lacoco-lab.github.io/
<https://lacoco-lab.github.io/><https://lacoco-lab.github.io/>
*HOW TO APPLY
*
Please follow the procedure here: https://lacoco-lab.github.io/joining/
<https://lacoco-lab.github.io/joining/><https://lacoco-lab.github.io/joining/>
For questions, please contact Michael Hahn at [email protected]
--
Michael Hahn
Tenure-Track Professor
Saarland Informatics Campus
Saarland University
Group: https://lacoco-lab.github.io/
Personal: https://www.mhahn.info/
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