About Me

Hello! Welcome to my page 👋

I completed my Master’s degree in Computer Science and Engineering at Korea University in February, where I was advised by Prof. Jaewoo Kang at the DMIS Lab. My research interests lie in natural language processing (NLP), large language models (LLMs), information retrieval (IR), and agents.

I collaborate with Yale University’s Gerstein Lab, working on medical multi-agent systems for clinical decision support under the guidance of Prof. Mark Gerstein and Xiangru Tang.

I also collaborate with Yale University’s Qingyu Chen’s Lab, working on systematic validation of medical retrieval-augmented generation systems under the guidance of Prof. Qingyu Chen and Dr. Hyunjae Kim.

You can find my CV here.

Research Interests

My research focuses on:

Information Retrieval [NAACL’25, ISMB’24]

• Novel dense retrieval architectures
• Knowledge grounding
• Factual verification

Multi-Agent Systems

• Process-level reward modeling
• Agentic retrieval-augmented generation
• Optimization of agent workflows

Publications & Preprints

• MedAgentsBench: Benchmarking Thinking Models and Agent Frameworks for Complex Medical Reasoning
  Xiangru Tang†, Daniel Shao†, Jiwoong Sohn†, Jiapeng Chen, Jiayi Zhang, Jinyu Xiang, Fang Wu, Yilun Zhao, Chenglin Wu, Wenqi Shi, Arman Cohan, Mark Gerstein
  arXiv:2503.07459 - Under Review

• Rationale-Guided Retrieval Augmented Generation for Medical Question Answering
  Jiwoong Sohn, Yein Park, Chanwoong Yoon, Sihyun Park, Mujeen Sung, Hyunjae Kim, Jaewoo Kang
  NAACL 2025 (Oral)

• Small Language Models Learn Enhanced Reasoning Skills from Medical Textbooks
  Hyunjae Kim, Hyeon Hwang, Jiwoo Lee, Sihyeon Park, Dain Kim, Taewhoo Lee, Chanwoong Yoon, Jiwoong Sohn, Donghee Choi, Jaewoo Kang
  arXiv:2404.00376 - Under Review

• Improving Medical Reasoning through Retrieval and Self-Reflection with Retrieval-Augmented Large Language Models
  Minbyul Jeong, Jiwoong Sohn, Mujeen Sung, Jaewoo Kang
  ISMB 2024 (Oral and Poster), Bioinformatics 2024

• KU AIGEN ICL EDI@BC8 Track 3: Advancing Phenotype Named Entity Recognition and Normalization for Dysmorphology Physical Examination Reports
  Hajung Kim, Chanhwi Kim, Jiwoong Sohn, Tim Beck, Marek Rei, Sunkyu Kim, T. Ian Simpson, Joram M. Posma, Antoine Lain, Mujeen Sung, Jaewoo Kang
  AMIA 2023, Proceedings of the BioCreative VIII Challenge and Workshop

• Multi-Agent Systems Optimization
  Jiwoong Sohn†, Xiangru Tang†, Yanjun Shao†, Hyungsoon Hwang†, Nikhil Khandekar, Sihyun Park, Jiwoo Lee, Mark Gerstein, Mujeen Sung, Jaewoo Kang
  Manuscript in Preparation

• Medical Agentic RAG
  Jiwoong Sohn†, Xiangru Tang†, Yanjun Shao†, Jaewoo Kang, Mark Gerstein
  Manuscript in Preparation

• Medical Retrieval-Augmented Generation Verification
  Hyunjae Kim, Jiwoong Sohn, Qingyu Chen
  Manuscript in Preparation

• Process-Level Reward Modeling
  Yoon Jae Hoon†, Jiwoong Sohn†, Xiangru Tang, Yanjun Shao, Hyunjae Kim, Mark Gerstein, Jaewoo Kang
  Manuscript in Preparation

Honors and Awards

• Integrated Bachelor’s and Master’s Scholarship (50% Tuition) (Sep 2023 - Feb 2025)
  Awarded based on GPA of 4.0 or above in both Bachelor’s and Master’s degrees
• Early Completion (Sep 2023 - Feb 2025)
  Awarded based on GPA of 4.0 or above in both Bachelor’s and Master’s degrees
• ACL 2024 BioNLP Workshop Shared Task on Clinical Text Generation (May 2024)
  Top Performing Teams
• LG Electronics iPBL Competition (Feb 2024)
  2nd Prize, 5,000 USD (Monetary Award and Prizes)
• Biocreative VIII Track 3 Genetic Phenotype Extraction and Normalization (Sep 2023)
  3rd Prize
• Semester High Honors (Fall 2020, Fall 2019) Awarded for academic excellence
• SDGs Innovation Arduino-based Technology Competition (Dec 2020)
  2nd Prize

Education

• Korea University (Sep 2023 - Feb 2025, Early Completion)
  M.S. in Computer Science and Engineering
  GPA: 4.44/4.5 (Merit-based Scholarship)
  Advisor: Prof. Jaewoo Kang

• Korea University (Mar 2016 - Aug 2023) B.E. in Artificial Intelligence
  B.S. in Health and Environmental Science
  Minor in Computer Science and Engineering
  GPA: 4.0/4.5

Contact

• Email: jw_sohn@korea.ac.kr
• Office: 501B, Woojung Hall of Informatics, Korea University
• Address: 145 Anam-ro, Seongbuk-gu, Seoul, South Korea