Domain-Shift-Aware Conformal Prediction for Large Language Models
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Abstract (arXiv)
Large language models have achieved impressive performance across diverse tasks. However, their tendency to produce overconfident and factually incorrect outputs, known as hallucinations, poses risks in real-world applications. Conformal prediction provides finite-sample, distribution-free coverage guarantees, but standard conformal prediction breaks down under domain shift, often leading to under-coverage and unreliable prediction sets. We propose a new framework called Domain-Shift-Aware Conformal Prediction (DS-CP). Our framework adapts conformal prediction to large language models under domain shift, by systematically reweighting calibration samples based on their proximity to the test prompt, thereby preserving validity while enhancing adaptivity. Our theoretical analysis and experiments on the MMLU benchmark demonstrate that the proposed method delivers more reliable coverage than standard conformal prediction, especially under substantial distribution shifts, while maintaining efficiency. This provides a practical step toward trustworthy uncertainty quantification for large language models in real-world deployment.
Key facts. Cited by 6 papers in the map (data through 14 Oct 2026). Builds on 32 of its 40 references that are in the map. First posted on arXiv 7 Oct 2025.
Builds on
32 of 40 references.
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20 more
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Built on by
Citing papers per year: 2025: 1; 2026: 5.
6 papers.
- 2026CAOS: Conformal Aggregation of One-Shot Predictorscited by 1
- 2026Adaptive Conformal Prediction for Improving Factuality of Generations by Large Language Modelscited by 1
- 2026Beyond Surface Statistics: Robust Conformal Prediction for LLMs via Internal Representationscited by 1
- 2025CoFineLLM: Conformal Finetuning of LLMs for Language-Instructed Robot Planningcited by 0
- 2026Continual Calibration: Coverage Can Collapse Before Accuracy in Lifelong LLM Fine-Tuningcited by 0
- 2026Can VLMs Reliably Assess Sidewalk Accessibility Attributes from Pedestrian-Level Imagery?cited by 0
- 2026Can VLMs Reliably Assess Sidewalk Accessibility Attributes from Pedestrian-Level Imagery?15 Sep 2026
- 2026Continual Calibration: Coverage Can Collapse Before Accuracy in Lifelong LLM Fine-Tuning27 Apr 2026
- 2026Beyond Surface Statistics: Robust Conformal Prediction for LLMs via Internal Representations17 Apr 2026
- 2026Adaptive Conformal Prediction for Improving Factuality of Generations by Large Language Models15 Apr 2026
- 2026CAOS: Conformal Aggregation of One-Shot Predictors8 Jan 2026
- 2025CoFineLLM: Conformal Finetuning of LLMs for Language-Instructed Robot Planning9 Nov 2025