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Yunseo Chang

Making room for human thought.

Hi, I'm Yunseo (you can also call me Sienna, my English name), an HCI researcher exploring how spatial and intelligent interfaces can support human memory, creativity, and agency.

I'm an M.S. student in Computer Science and Engineering at Korea University, working in the Digital eXPerience Lab with Prof. Gerard Jounghyun Kim.

My research is in human–computer interaction, focusing on extended reality, spatial memory, and context-aware, personalized interfaces.

My research asks how extended reality can work with people's memory and attention instead of competing for them.

I study how people perceive, remember, and revisit spatial information, and I design interfaces that adapt to the user, the task, and the environment while leaving the final judgment to the person. I build XR prototypes and evaluate them in controlled user studies.

I co-authored a CHI 2026 paper that uses Fitts' law to measure how emotion affects pointing performance.

I also work on two funded projects: metaverse interaction for passengers in autonomous vehicles, aimed at reducing motion sickness and improving usability, and XR prototypes that support health, empathy, and social engagement among older adults.

I came to HCI from business administration and service design engineering, which taught me to start from people's pain points and to treat each design as a hypothesis to test and revise.

  • #extended_reality
  • #spatial_memory
  • #context_aware_interfaces
  • #personalized_interfaces
  • The spaces we remember. How places shape memory, and how immersive technologies can help us revisit experiences, reconstruct familiar environments, and organize information in space.
  • When interfaces step back. How interfaces can respond to people's goals and surroundings while leaving room for their own judgment, creativity, and choices.

News

  • Sep 2026TeachingStarted TA for Data Structure at Korea University.
  • Apr 2026PaperA paper was accepted at ACM CHI 2026 (2nd Author).
  • Apr 2026TalkGave a special lecture on document skills for international students at Konyang University.
  • Mar 2026TeachingStarted TA for Introduction to HCI at Korea University.
Earlier news
  • Mar 2026EducationStarted my M.S. in Computer Science and Engineering at Korea University, in the DXP Lab.
  • Feb 2026EducationFinished my B.B.A. and B.E. at Sungshin Women's University. (B.B.A. Business Administration & B.E. Service and Design Engineering)
  • Jun 2025ResearchJoined the Digital eXPerience Lab at Korea University as an undergraduate research assistant.
  • Jun 2025LifeReturned to Korea after studying as an exchange student in the UK.

Projects

  • Illustration: a person selects a starting scene, then, wearing a VR headset, chooses each next remembered scene; a Memory Trail of scenes grows and is saved as a named episode.

    ReminiScenes: Episode authoring for multi-scene autobiographical revisiting in VR

    Yunseo Chang, Dongyun Joo, Hanseob Kim, Gerard Jounghyun Kim

    Under review · 2026 · Digital eXPerience Lab, Korea University

    When remembered places can be reconstructed and entered in VR, revisiting several of them raises a question that single-scene viewers never face: what comes next, and how do these scenes belong together?

    ReminiScenes frames this as episode authoring: shaping how remembered scenes are selected, sequenced, and related during a revisit. The revisitor chooses a starting scene, then decides each next scene without leaving the one they are in.

    As those choices accumulate, a Memory Trail keeps the resulting organization across scenes visible. The episode can be named, saved, and revisited alongside earlier episodes in an Episode Library.

Selected Publications

2026

  • Illustration: three people do a pointing task at their computers, moving to a target of width W at distance D, each with a thought bubble showing an angry, neutral or laughing face.

    Quantifying Low-Level Motor Effects of Emotion: Validating Fitts' Law in Affective Contexts

    Dongyun Joo, Yunseo Chang, JongChan Park, Kyungseo Jung, Minchae Kim, Gerard Jounghyun Kim

    CHI '26 · Proceedings of the 2026 CHI Conference on Human Factors in Computing Systems, ACM · Published

    PDF

    BibTeX

    @inproceedings{joo2026quantifying,
  title={Quantifying Low-Level Motor Effects of Emotion: Validating Fitts’ Law in Affective Contexts},
  author={Joo, Dongyun and Chang, Yunseo and Park, JongChan and Jung, Kyungseo and Kim, Minchae and Jounghyun Kim, Gerard},
  booktitle={Proceedings of the 2026 CHI Conference on Human Factors in Computing Systems},
  pages={1--20},
  year={2026}
}

All publications →

Experience

Education

  • Mar 2026 – Feb 2028 (expected)

    M.S. in Computer Science and Engineering

    Korea University, Seoul

    Advisor: Prof. Gerard Jounghyun Kim

    GPA 4.38 / 4.50

  • Sep 2024 – Jun 2025

    Exchange Student, full year

    York St John University, York, United Kingdom

  • Mar 2022 – Feb 2026

    B.B.A. in Business Administration and B.E. in Service Design Engineering

    Sungshin Women's University, Seoul

    Advisor: Prof. Hwan Kim

    GPA 4.09 / 4.50

Research

  • Mar 2026 – present

    Graduate Research Assistant

    Digital eXPerience Lab, Korea University

    Advisor: Prof. Gerard Jounghyun Kim

  • Jun 2025 – Feb 2026

    Undergraduate Research Assistant

    Digital eXPerience Lab, Korea University

    Advisor: Prof. Gerard Jounghyun Kim

  • Mar 2024 – Aug 2024

    Undergraduate Research Assistant

    HCI Lab, Sungshin Women's University

    Advisor: Prof. Hwan Kim

Teaching

  • Sep 2026 – Dec 2026

    Teaching Assistant, Data Structure

    Korea University. Lecturer: Prof. Chaeyong Park

  • Apr 2026

    Invited Instructor

    Konyang University. Special lecture on document authoring skills for international students

  • Mar 2026 – Jun 2026

    Teaching Assistant, Introduction to HCI

    Korea University. Lecturer: Prof. Chaeyong Park

Patents

  • Sep 2024

    Augment Reality Glass

    KR 10-2024-0127068

    Patent strategy for user interaction in augmented reality devices.

Before research

  • Mar – Aug 2024

    2024 Korea Campus Patent Strategy Universiade

    Samsung Electronics sponsor award, 3rd place. Hosted by KIPA

    Developed a patent strategy for user interaction in augmented reality devices.

  • Mar – Jun 2024

    LG Smart Farm product-service system design

    Industry–university linkage project

    Developed the Gruu System, a sub-branding concept extending the LG gram product family through three product lines, and detailed 3D models of smart farm spaces.

  • Mar – Aug 2024

    Crystalmine

    Startup project, Salty Lab. Project manager and service design lead

    A service for user solidarity and security in the Sungshin Women's University community, selected for the STARTUP021 Program three years running (2023–2025).

Honors

  • 2024 Spring

    Academic Scholarship (2nd place)

  • 2024

    Undergraduate Research Program (UROP) Scholarship

  • 2024

    Leadership Excellence Scholarship, University Mentoring Program

  • 2023 Fall

    Academic Improvement Scholarship

  • 2023 Spring

    Academic Improvement Scholarship

  • 2023

    Study Abroad Program Scholarship, University of Auckland

  • 2022 Fall

    Academic Scholarship (1st place)

  • 2022 Spring

    Academic Improvement Scholarship

Full details in my CV (PDF, updated October 2026).