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Bartosz Piotrowski

3 accepted papers

2026

ProofOptimizer: Training Language Models to Simplify Proofs without Human Demonstrations

ICLR 2026poster

Neural theorem proving has advanced rapidly in the past year, reaching IMO gold-medalist capabilities and producing formal proofs that span thousands of lines. Although such proofs are mechanically verified by formal systems like Lean, their excessive length renders them difficult for humans to comp…

Cited by 0SourceScholar
2024

Magnushammer: A Transformer-Based Approach to Premise Selection

ICLR 2024poster

This paper presents a novel approach to premise selection, a crucial reasoning task in automated theorem proving. Traditionally, symbolic methods that rely on extensive domain knowledge and engineering effort are applied to this task. In contrast, this work demonstrates that contrastive training wit…

Cited by 44SourcePDFScholar
2024

Repurposing Language Models into Embedding Models: Finding the Compute-Optimal Recipe

NeurIPS 2024poster

Text embeddings are essential for tasks such as document retrieval, clustering, and semantic similarity assessment. In this paper, we study how to contrastively train text embedding models in a compute-optimal fashion, given a suite of pretrained decoder-only language models. Our innovation is an al…