JB is currently a PhD student at KAIST AI, advised by Jinwoo Shin, and an AI resident at NAVER Cloud. He delves into the nature of deep learning through the lens of human cognitive systems, with a particular focus on how humans acquire, process, and apply world knowledge. Before joining KAIST, JB led AI research for patent analysis and retrieval at Tanalysis. He obtained a Master’s Degree in Artificial Intelligence from Yonsei University, where he studied neural architectures and their foundations in formal language under the guidance of Yo-Sub Han. Prior to his journey into AI research, JB worked as a software engineer at Samsung Electronics.

Selected Publications

• HyperCLOVA X 8B Omni. [arXiv] [model]
  NAVER Cloud HyperCLOVA X Team
  Technical report. 2026

• ATHENA: Mathematical Reasoning with Thought Expansion. [arXiv] [code]
  JB Kim, Hazel Kim, Joonghyuk Hahn, Yo-Sub Han.
  In Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing (EMNLP 2023), 16315–16327, 2023

Experience

• Ph.D. in Artificial Intelligence, KAIST. ‘25 ~ Present
  (Advisor: Jinwoo Shin)

• AI Resident, NAVER Cloud. ‘25 ~ Present

• AI Research Lead, Tanalysis. ‘23 ~ ‘24

• M.S. in Artificial Intelligence, Yonsei University. ‘21 ~ ‘23
  (Advisor: Yo-Sub Han)

• Software Engineer, Samsung Electronics. ‘17 ~ ‘19