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Florian Buettner

2 papers indexed

arxivcs.LG2026-07-09

Eigenvalue Calibration for Semantic Embeddings of Large Language Models

Sebastian G. Gruber, Nassim Walha, Francis Bach, Florian Buettner

Uncertainty quantification is central to the reliable deployment of large language models (LLMs), and eigenvalues of semantic embeddings have recently emerged as a key tool in state-of-the-art methods. However, conventional calibration results developed for classification probabi…

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arxivcs.CVcs.AI2026-07-01

LeVLJEPA: End-to-End Vision-Language Pretraining Without Negatives

Lukas Kuhn, Giuseppe Serra, Randall Balestriero, Florian Buettner

Vision-language pretraining remains dominated by contrastive objectives, whereas vision-only self-supervised learning has largely adopted non-contrastive methods. At the same time, the role of vision-language encoders has shifted: they are increasingly deployed not as zero-shot c…

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