Portrait of Yann Pernot

Yann Pernot

yann.pernot@mila.quebec
Master's Research - Polytechnique Montréal
Supervisor
Sarath Chandar
Research Topics
AI for Science
Computational Biology
Foundation Models
Reinforcement Learning

Publications

Drowning in Routine: Signal Dilution in Multi-Turn Agent Training
Yann Pernot
Vi Retault
Multi-turn agents interleave consequential decisions with routine execution: some actions change the downstream return distribution, while o… (see more)thers are necessary but reward-equivalent. The cost of trajectory-level credit assignment, often attributed to long horizons, is in fact governed by decision density
2026-06-19
arXiv (preprint)
doi.org
arxiv.org