If We May De-Presuppose: Robustly Verifying Claims through
  Presupposition-Free Question Decomposition
Authors: name: Shubhashis Roy Dipta; name: Francis Ferraro
Published: 2025-08-22 23:34:24

Abstract: Prior work has shown that presupposition in generated questions can introduce
unverified assumptions, leading to inconsistencies in claim verification.
Additionally, prompt sensitivity remains a significant challenge for large
language models (LLMs), resulting in performance variance as high as 3-6%.
While recent advancements have reduced this gap, our study demonstrates that
prompt sensitivity remains a persistent issue. To address this, we propose a
structured and robust claim verification framework that reasons through
presupposition-free, decomposed questions. Extensive experiments across
multiple prompts, datasets, and LLMs reveal that even state-of-the-art models
remain susceptible to prompt variance and presupposition. Our method
consistently mitigates these issues, achieving up to a 2-5% improvement.