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Changhun Lee

9 accepted papers

2025

AMQ: Enabling AutoML for Mixed-precision Weight-Only Quantization of Large Language Models

EMNLP 2025

To enable broader deployment of Large Language Models (LLMs), it is essential to identify the best-performing model under strict memory constraints. We present AMQ, Automated Mixed-Precision Weight-Only Quantization, a framework that assigns layer-wise quantization bit-widths to optimally balance mo

2025

PruneCD: Contrasting Pruned Self Model to Improve Decoding Factuality

EMNLP 2025

To mitigate the hallucination problem in large language models, DoLa exploits early exit logits from the same model as a contrastive prior. However, we found that these early exit logits tend to be flat, low in magnitude, and fail to reflect meaningful contrasts. To address this, we propose PruneCD,

2025

SEAL: Scaling to Emphasize Attention for Long-Context Retrieval

ACL 2025long

While many advanced LLMs are designed to handle long sequence data, we can still observe notable quality degradation even within the sequence limit. In this work, we introduce a novel approach called Scaling to Emphasize Attention for Long-context retrieval (SEAL), which enhances the retrieval perfo…

2024

OWQ: Outlier-Aware Weight Quantization for Efficient Fine-Tuning and Inference of Large Language Models

AAAI 2024technical

Large language models (LLMs) with hundreds of billions of parameters require powerful server-grade GPUs for inference, limiting their practical deployment. To address this challenge, we introduce the outlier-aware weight quantization (OWQ) method, which aims to minimize LLM's footprint through low-p…

2024

QEFT: Quantization for Efficient Fine-Tuning of LLMs

EMNLP 2024finding

With the rapid growth in the use of fine-tuning for large language models (LLMs), optimizing fine-tuning while keeping inference efficient has become highly important. However, this is a challenging task as it requires improvements in all aspects, including inference speed, fine-tuning speed, memory…

2024

Towards Pareto-Efficient RLHF: Paying Attention to a Few High-Reward Samples with Reward Dropout

EMNLP 2024finding

Recently, leveraging reinforcement learning (RL) to fine-tune language models (LMs), known as reinforcement learning from human feedback (RLHF), has become an important research topic. However, there is still a lack of theoretical understanding of how RLHF works, the conditions under which it succee…

Cited by 0SourcePDFScholar
2021

Improving Accuracy of Binary Neural Networks Using Unbalanced Activation Distribution

CVPR 2021poster

Binarization of neural network models is considered as one of the promising methods to deploy deep neural network models on resource-constrained environments such as mobile devices. However, Binary Neural Networks (BNNs) tend to suffer from severe accuracy degradation compared to the full-precision…

Cited by 49PDFScholar
2021

MIND dataset for diet planning and dietary healthcare with machine learning: Dataset creation using combinatorial optimization and controllable generation with domain experts

NeurIPS 2021poster

Diet planning, a basic and regular human activity, is important to all individuals. Children, adults, the healthy, and the infirm all profit from diet planning. Many recent attempts have been made to develop machine learning (ML) applications related to diet planning. However, given the complexity a…

Cited by 6SourceScholar