Hwan Chang

I am a M.S. student in Department of AI at Chung-Ang University, Seoul, Korea.

News

Publications

International Conference

• Keep Security! Benchmarking Security Policy Preservation in Large Language Model Contexts Against Indirect Attacks in Question Answering,
  Hwan Chang*, Yumin Kim*, Yonghyun Jun, Hwanhee Lee✝
  EMNLP 2025
• How Do Large Vision-Language Models See Text in Image? Unveiling the Distinctive Role of OCR Heads,
  Ingeol Baek, Hwan Chang, Sunghyun Ryu, Hwanhee Lee✝
  EMNLP 2025 (Oral)
• Which Retain Set Matters for LLM Unlearning? A Case Study on Entity Unlearning,
  Hwan Chang, Hwanhee Lee✝
  ACL 2025 Findings
• Probing-RAG: Self-Probing to Guide Language Models in Selective Document Retrieval,
  Ingeol Baek, Hwan Chang, Byeongjeong Kim, Jimin Lee, Hwanhee Lee✝
  NAACL 2025 Findings

Preprints

• ChatInject: Abusing Chat Templates for Prompt Injection in LLM Agents,
  Hwan Chang*, Yonghyun Jun*, Hwanhee Lee✝
  Arxiv, 2025
• Hallucinate at the Last in Long Response Generation: A Case Study on Long Document Summarization,
  Joonho Yang, Seunghyun Yoon, Hwan Chang, Byeongjeong Kim, Hwanhee Lee✝
  Arxiv, 2025
• Leveraging Fine-grained Error Correction in Korean Speech Recognition for Consultation Services,
  Yonghyun Jun, Jimin Lee, Hwan Chang, Dongho Shin, Seolah Kim, Hwanhee Lee✝
  2025

Work Experience

• LG AI Research Seoul, Korea
  Research Intern @ EXAONE Lab
  Sep 2025 - Present

Education

• M.S. in Department of Artificial Intelligence
• Advisor: Prof. Hwanhee Lee

• B.S. in Computer Science and Engineering

Academic Services

• Reviewer
  ICLR: 2026
  EMNLP: 2025
  AAAI: 2026
  EACL: 2026
  

Teaching Experience

• Object-Oriented Programming
  Spring 2025


• Artificial Intelligence Design
  Fall 2024

Research Projects

• Improvement of Speech Recognition Rate Using LLMs _{(Seoul 120 Dasan Call Center)} Detecting and Correcting Errors of ASR System for Dialogue Data with Large Language Models