Published numerous papers in the fields of large language models, information retrieval, and recommender systems. Some of the publications include:
- In Their Own Words: Reasoning Traces Tailored for Small Models Make Them Better Reasoners (2025)
- BESPOKE: Benchmark for Search-Augmented Large Language Model Personalization via Diagnostic Feedback (2025)
- BPL: Bias-adaptive Preference Distillation Learning for Recommender System (2025)
- Fast and Fluent Diffusion Language Models via Convolutional Decoding and Rejective Fine-tuning (2025, NeurIPS Spotlight)
- Can Large Language Models be Effective Online Opinion Miners? (2025)
- Towards Personalized Conversational Sales Agents: Contextual User Profiling for Strategic Action (2025)
- Stop Playing the Guessing Game! Target-free User Simulation for Evaluating Conversational Recommender Systems (2024)
- Can Code-Switched Texts Activate a Knowledge Switch in LLMs? A Case Study on English-Korean Code-Switching (2024)
- How Diversely Can Language Models Solve Problems? Exploring the Algorithmic Diversity of Model-Generated Code (2025)
- HIPPO-Video: Simulating Watch Histories with Large Language Models for Personalized Video Highlighting (2025)
- Imagine All The Relevance: Scenario-Profiled Indexing with Knowledge Expansion for Dense Retrieval (2025)
- LLMs Think, But Not In Your Flow: Reasoning-Level Personalization for Black-Box Large Language Models (2025)
- MT-RAIG: Novel Benchmark and Evaluation Framework for Retrieval-Augmented Insight Generation over Multiple Tables (2025)
- Rethinking Reward Model Evaluation Through the Lens of Reward Overoptimization (2025)
- Review-driven Personalized Preference Reasoning with Large Language Models for Recommendation (2025)
- Web Agents with World Models: Learning and Leveraging Environment Dynamics in Web Navigation (2025)
Research Experience
Holds faculty positions at Yonsei University and POSTECH, and conducted postdoctoral research at UIUC. His research areas include large language models, information retrieval, and recommender systems.
Education
Received a Ph.D. in Computer Science from POSTECH, advised by Prof. Hwanjo Yu. During his Ph.D., he worked as a visiting scholar at UT Health under the supervision of Prof. Xiaoqian Jiang. After completing his Ph.D., he worked as a postdoctoral research fellow at UIUC with Prof. Jiawei Han.
Background
An assistant professor in the Department of Artificial Intelligence at Yonsei University, and an adjunct professor at the Graduate School of Artificial Intelligence at POSTECH. Research interests include transforming real-world data into artificial intelligence, large language models, and information retrieval & recommender systems.