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Chaeyoung Oh

3 accepted papers

2026

Group-Normalized Implicit Value Optimization for Language Models

ICLR 2026poster

Fine-tuning Large Language Models (LLMs) with reinforcement learning (RL) has become a key technique for enhancing performance on a wide range of tasks, from user alignment to complex reasoning. However, this approach is often hindered by the difficulty of fine-grained credit assignment, as it typic…

Cited by 0SourceScholar
2026

Inference Time Concept Removal Guidance for Text-to-Image Diffusion Models

ICML 2026spotlight

Text-to-image diffusion models remain vulnerable to adversarial prompts that elicit disallowed content, motivating reliable inference-time controls. A popular approach is negative guidance, which subtracts a negative-prompt direction with a fixed weight. However, it often forces a safety–fidelity tr…

Cited by 0SourceScholar
2024

Korean Bio-Medical Corpus (KBMC) for Medical Named Entity Recognition

COLING 2024main

Named Entity Recognition (NER) plays a pivotal role in medical Natural Language Processing (NLP). Yet, there has not been an open-source medical NER dataset specifically for the Korean language. To address this, we utilized ChatGPT to assist in constructing the KBMC (Korean Bio-Medical Corpus), whic…