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Pierre Erbacher

4 accepted papers

2026

Whatever Remains Must Be True: Filtering Drives Reasoning in LLMs, Shaping Diversity

ICLR 2026poster

Reinforcement Learning (RL) has become the _de facto_ standard for tuning LLMs to solve tasks involving reasoning. However, growing evidence shows that such models often suffer from a significant loss in diversity. We argue that this arises because RL implicitly optimizes the Reverse KL to a target…

Cited by 0SourcecodeScholar
2025

ACCO: Accumulate While You Communicate for Communication-Overlapped Sharded LLM Training

NeurIPS 2025poster

Training LLMs relies on distributed implementations using multiple GPUs to compute gradients in parallel with sharded optimizers. However, synchronizing gradients in data parallel setups introduces communication overhead that grows with the number of workers, limiting parallelization efficiency. Loc…

Cited by 0SourcecodeScholar
2025

FaST: Feature-aware Sampling and Tuning for Personalized Preference Alignment with Limited Data

EMNLP 2025

LLM-powered conversational assistants are often deployed in a one-size-fits-all manner, which fails to accommodate individual user preferences. Recently, LLM personalization – tailoring models to align with specific user preferences – has gained increasing attention as a way to bridge this gap. In t

2025

Zebra: In-Context Generative Pretraining for Solving Parametric PDEs

ICML 2025poster

Solving time-dependent parametric partial differential equations (PDEs) is challenging for data-driven methods, as these models must adapt to variations in parameters such as coefficients, forcing terms, and initial conditions. State-of-the-art neural surrogates perform adaptation through gradient-b…

Cited by 2SourcePDFScholar