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Shuhao Guan

11 accepted papers

2026

Bayesian-LoRA: Probabilistic Low-Rank Adaptation of Large Language Models

ICML 2026poster

Large Language Models usually put more emphasis on accuracy and therefore, will guess even when not certain about the prediction, which is especially severe when fine-tuned on small datasets due to the inherent tendency toward miscalibration. In this work, we introduce Bayesian-LoRA, which reformula…

Cited by 0SourceScholar
2026

Teaching VLMs to Admit Uncertainty in OCR from Lossy Visual Inputs

ICLR 2026poster

Vision-language models (VLMs) are increasingly replacing traditional OCR pipelines. However, they often hallucinate on lossy visual inputs, such as visually degraded document images, producing fluent yet incorrect text without signaling uncertainty. This occurs because current post-training emphasiz…

Cited by 0SourceScholar
2025

CLEAR: A Framework Enabling Large Language Models to Discern Confusing Legal Paragraphs

EMNLP 2025

Most of the existing work focuses on enabling LLMs to leverage legal rules (, law articles) to tackle complex legal reasoning tasks, but ignores their ability to understand legal rules. To better evaluate the LLMs’ capabilities on the task, in this work, we propose a new challenge task: Legal Paragr

2025

DCR: Quantifying Data Contamination in LLMs Evaluation

EMNLP 2025

The rapid advancement of large language models (LLMs) has heightened concerns about benchmark data contamination (BDC), where models inadvertently memorize evaluation data during the training process, inflating performance metrics, and undermining genuine generalization assessment. This paper introd

2025

PreP-OCR: A Complete Pipeline for Document Image Restoration and Enhanced OCR Accuracy

ACL 2025long

This paper introduces PreP-OCR, a two-stage pipeline that combines document image restoration with semantic-aware post-OCR correction to enhance both visual clarity and textual consistency, thereby improving text extraction from degraded historical documents.First, we synthesize document-image pairs…

2025

SSA: Semantic Contamination of LLM-Driven Fake News Detection

EMNLP 2025

Benchmark data contamination (BDC) silently inflate the evaluation performance of large language models (LLMs), yet current work on BDC has centered on direct token overlap (data/label level), leaving the subtler and equally harmful semantic level BDC largely unexplored. This gap is critical in fake

2025

Stochastic Weight Sharing for Bayesian Neural Networks

AISTATS 2025poster

While offering a principled framework for uncertainty quantification in deep learning, the employment of Bayesian Neural Networks (BNNs) is still constrained by their increased computational requirements and the convergence difficulties when training very deep, state-of-the-art architectures. In thi…

Cited by 0SourceScholar
2025

UORA: Uniform Orthogonal Reinitialization Adaptation in Parameter Efficient Fine-Tuning of Large Models

ACL 2025long

This paper introduces UoRA, a novel parameter-efficient fine-tuning (PEFT) approach for large language models (LLMs). UoRA achieves state-of-the-art efficiency by leveraging a low-rank approximation method that reduces the number of trainable parameters without compromising performance. Unlike exist…

Cited by 0SourcePDFScholar
2024

Effective Synthetic Data and Test-Time Adaptation for OCR Correction

EMNLP 2024main

Post-OCR technology is used to correct errors in the text produced by OCR systems. This study introduces a method for constructing post-OCR synthetic data with different noise levels using weak supervision. We define Character Error Rate (CER) thresholds for “effective” and “ineffective” synthetic d…

Cited by 1SourcePDFScholar