Education

• Carnegie Mellon University

  M.S. in Artificial Intelligence Engineering, Electrical and Computer Engineering
  Aug 2026 – Present | Pittsburgh, PA

• Yonsei University

  B.S. in Computer Science and Engineering (GPA: 3.72 / 4.3)
  Mar 2021 – Feb 2026 | Seoul, South Korea

Publications

• 

  Anchoring and Rescaling Attention for Semantically Coherent Inbetweening CVPR 2026 Highlight

  Paper

  Tae Eun Choi*, Sumin Shim*, Junhyeok Kim, Seong Jae Hwang

• 

  Do MLLMs Capture How Interfaces Guide User Behavior? A Benchmark for Multimodal UI/UX Design Understanding ACL 2026

  Paper

  Jaehyun Jeon, Minsoo Kim, Janghan Yoon, Sumin Shim, Yejin Choi, Hanbin Kim, Youngjae Yu

• 

  Towards Visual Text Design Transfer Across Languages NeurIPS 2024

  Paper

  Yejin Choi*, Jiwan Chung*, Sumin Shim, Giyeong Oh, Youngjae Yu

* Equal contribution

Experience

• OptAI

  Research Intern — LLM Optimization Team | Jul 2025 – Aug 2025

  • Finetuned a ~1B-parameter Korean language model for the LG U+ call summarization project.
  • Deployed the finetuned model on-device and built the company's demo mobile app.
  • Demonstrated the on-device LLM demo to external partners at the 2025 K-ICT exhibition.

• Multimodal AI Laboratory, Yonsei University

  Undergraduate Researcher | Sep 2023 – Jun 2025

  • Conducted research on Vision-Language Models (VLMs) and Large Language Models (LLMs).
  • Collaborated on projects including visual text design transfer and multimodal UI/UX understanding.

• Prometheus AI Student Club

  President (Mar 2024 – Feb 2025) & Development Team Lead (Mar 2023 – Feb 2024)

  • Led an intercollegiate AI club, coordinating project teams building AI apps and research prototypes.
  • Organized a 200-participant AI hackathon (KRW 4M prize pool) and two demo days with industry sponsors.

• HuemoneLab

  Coding Instructor | Dec 2023 – Jul 2024

  • Taught Python, Java, and basic algorithms to beginner and intermediate students.

Projects

• AkaLlama: Educational Korean LLM for Yonsei Students

  Multimodal AI Lab, Yonsei University | Sep 2024 – Feb 2025

  Built a large-scale Korean LLM dataset and deployed an ELO ranking-based pairwise evaluation system.

• Know Yourself: Building an LLM with Strong Knowledge of AI

  Prometheus AI Student Club | Sep 2024 – Feb 2025

  Developed an AI-knowledge QA benchmark and fine-tuned a small language model on a domain-specific corpus.

• WorkMate: AI Legal Chatbot for Foreign Workers

  Yonsei University Workstation Project | Sep 2024 – Dec 2024

  Developed the database and Retrieval-Augmented Generation (RAG) system for a legal chatbot.

• Detective Game with LLM Persona Agents

  GitHub Repository

  Interactive detective game utilizing custom LLM persona agents.

Awards & Scholarships

Honors & Awards

• 2nd Place AI Challenge Season 2: Innovating the World with AI (2025)
• 3rd Place AI Convergence Policy Hackathon (2025)
• 3rd Place 3rd KRX Financial Language Model Performance Competition (2024)
• 4th Place DOB Deep Learning Challenge (Face Swapping Task) (2023)
• 3rd Place 4th Korea Red Cross Sharing & Service Hackathon (2023)

Scholarships

• • Internship Excellence Scholarship, Yonsei University (Oct 2025)
• • University Innovation Scholarship, Yonsei University (Oct 2025; Apr 2023)
• • SW/AI Activity Excellence Scholarship, Yonsei University (Feb 2025)
• • Industry-Academia Project Excellence Scholarship, Yonsei University (Jul 2024)