About Me

Hello! I am an incoming Ph.D. student in Computer Science and Engineering at the University of Michigan, where I will be advised by Prof. Lu Wang. Currently, I am a research intern at the Vision & Learning Lab at Seoul National University, advised by Prof. Gunhee Kim.

My primary research interests lie in natural language processing and machine learning, with a focus on building sustainable, general-purpose AI systems that can adapt to dynamic and evolving environments.

Publications

• GradNormIR: When Should We Update the Dense Retriever in Evolving Corpora?

  Dayoon Ko, Jinyoung Kim, Sohyeon Kim, Jinhyuk Kim, Jaehoon Lee, Seonghak Song, Minyoung Lee, Gunhee Kim
  ACL 2025 Findings
  [paper] [code]

• DynamicER: Resolving Emerging Mentions to Dynamic Entities for RAG

  Jinyoung Kim, Dayoon Ko, Gunhee Kim
  EMNLP 2024
  [paper] [code]

• GrowOVER: How Can LLMs Adapt to Growing Real-World Knowledge?

  Dayoon Ko, Jinyoung Kim, Hahyeon Choi, Gunhee Kim
  ACL 2024
  [paper] [code]

Education

• Seoul National University (Mar. 2018 - Aug. 2024)

  Leave of absence for military service: Jul. 2020 - Jan. 2022
  B.S. in Computer Science and Engineering & B.A. in Economics
  Graduated with Summa Cum Laude

Experiences

• Vision & Learning Lab, SNU (Sep. 2023 - Present)

  Research Intern

  • Conducted research on evolving knowledge and retrieval-augmented generation
  • Published 3 papers in top-tier conferences

• CLOVA Voice & Avatar Team, NAVER (Jan. 2023 - Feb. 2023)

  Machine Learning Researcher

  • Topic: Unified Accent Estimation for Speech Synthesis
  • Achieved 7.8% improvement in Accent Phrase (AP) prediction accuracy by unifying estimation for AP and Accent Nucleus (AN) boundaries
  • Designed and implemented novel AN decoder framework to address challenges in the long-tail distribution of accent estimation

• Music & Audio Research Group, SNU (Jul. 2022 - Aug. 2022)

  Research Intern

  • Conducted research on personalized symbolic music generation
  • Developed contrastive learning-based encoder and holistic frameworks for emotion and style conditioning in music generation

Leadership Experiences

• Squad Leader, Korean Augmentation to the US Army (Jul. 2020 - Jan. 2022)

  Sergeant, 176th Financial Management Support Unit, Eight Army