large language models, reasoning, fine-tuning, test-time computation, reinforcement learning with human feedback, world models
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News: new New Veda odpovedá (SOVVA) podcast episode, Prečo umelá inteligencia klame?, on AI hallucinations, model limits, and how to verify AI-generated information. Listen on Podbean, Spotify, Apple Podcasts.
News: new Interview with Denník N journalist Tomáš Hrivňák on AI existential-risk narratives, media framing, and concrete technical risks.
News: new Speaking at the ACE Talk Series at Microsoft Research Asia on September 17 (online)!
News: Interview in Denník N on recent AI-agent security incidents: Leading AI Labs Alarmed the World With Their Models... the key risk is how people deploy them.
News: Technical report: DiG-bench: Discovery in Games, paper a benchmark for scientific discovery through interaction and experimentation!
News: ASAI Stream features my AI Personality 2026 recognition for Social Impact of the Year: weekly Slovak AI ecosystem overview!
News: Invited talk at the Armenia LLM Summer School in Yerevan, Armenia (Aug 3-7)!
Bio
Michal is the Founding Researcher at Isara Labs, tenured researcher at Inria, and a lecturer at MVA at ENS Paris-Saclay. Michal is primarily interested in designing algorithms that would require as little human supervision as possible. He works on methods and settings that are able to deal with minimal feedback, such as deep reinforcement learning, bandit algorithms, self-supervised learning, or self play. Michal has recently worked on representation learning, world models and deep (reinforcement) learning algorithms that have some theoretical underpinning. In the past he has also worked on sequential algorithms with structured decisions where exploiting the structure leads to provably faster learning. Michal is now working on a new generation of large language models (LLMs), in addition to providing algorithmic solutions for their scalable test-time inference, fine-tuning and alignment. He received his PhD in 2011 from the University of Pittsburgh, before getting a tenure at Inria in 2012 and co-creating Google DeepMind Paris with R. Munos. In 2024, he became a Principal Llama Scientist at Meta, building online reinforcement learning stack and research for Llama 3. In 2025, he joined Isara Labs as a founding researcher.
Selected work
Research threads spanning frontier models, representation learning, bandits, and sparsification.
Nash-MD / NLHF
Preference learning as a two-player game, connecting LLM alignment, human feedback, and provable Nash-equilibrium algorithms.
NLHF · Nash-MD · preference learning
IX / implicit exploration
Implicit exploration replaces explicit exploration mixing with a biased loss estimator, giving sharp guarantees under partial and side-observation feedback.
side observations · data-dependent bounds · contextual bandits
Bandits & structured exploration
A long line on learning faster from structure: graphs, side observations, combinatorial actions, and Bayesian exploration.
Spectral · graph bandits · best-arm ID · semi-bandits · Thompson sampling
SQUEAK & sparsification
Single-pass sparsification of kernel matrices and graphs using ridge leverage scores, with scalable distributed variants.
Kernel approximation · ridge leverage scores · spectral sparsification
Coming up
Contact
Paris, France
40 avenue Halley
59650 Villeneuve d'Ascq, France
+33 3 59 57 78 01
4, avenue des Sciences
91190 Gif-sur-Yvette, France