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Christian Heumann

6 accepted papers

2026

Beyond Temperature: Hyperfitting as a Late-Stage Geometric Expansion

ICML 2026poster

Recent work has identified a counterintuitive phenomenon termed “Hyperfitting", where fine-tuning Large Language Models (LLMs) to near-zero training loss on small datasets surprisingly enhances open-ended generation quality and mitigates repetition in greedy decoding. While effective, the underlying…

Cited by 0SourceScholar
2025

Decoding Decoded: Understanding Hyperparameter Effects in Open-Ended Text Generation

COLING 2025main

Decoding strategies for generative large language models (LLMs) are a critical but often underexplored aspect of text generation tasks. Guided by specific hyperparameters, these strategies aim to transform the raw probability distributions produced by language models into coherent, fluent text. In t…

2025

GUARD: Glocal Uncertainty-Aware Robust Decoding for Effective and Efficient Open-Ended Text Generation

EMNLP 2025

Open-ended text generation faces a critical challenge: balancing coherence with diversity in LLM outputs. While contrastive search-based decoding strategies have emerged to address this trade-off, their practical utility is often limited by hyperparameter dependence and high computational costs. We

2025

taz2024full: Analysing German Newspapers for Gender Bias and Discrimination across Decades

ACL 2025finding

Open-access corpora are essential for advancing natural language processing (NLP) and computational social science (CSS). However,large-scale resources for German remain limited, restricting research on linguistic trends and societal issues such as gender bias. Wepresent taz2024full, the largest pub…

2024

Adaptive Contrastive Search: Uncertainty-Guided Decoding for Open-Ended Text Generation

EMNLP 2024finding

Despite the remarkable capabilities of large language models, generating high-quality text remains a challenging task. Numerous decoding strategies—such as beam search, sampling with temperature, top‐k sampling, nucleus (top‐p) sampling, typical decoding, contrastive decoding, and contrastive search…

2023

Automatic Transcription of Handwritten Old Occitan Language

EMNLP 2023long main

While existing neural network-based approaches have shown promising results in Handwritten Text Recognition (HTR) for high-resource languages and standardized/machine-written text, their application to low-resource languages often presents challenges, resulting in reduced effectiveness. In this pape…

Cited by 0SourceScholar