IdeAmigos: Comparing User-Orchestrated and System-Orchestrated Multi-Agent Brainstorming
In preparation
Hajun Kim, Jeongeon Park
Technology for a Better World
Publication
Generative AI as a Mediator in Creator Collaboration: Challenges, Design Opportunities, and Concerns
CSCW 2026 Paper
Hajun Kim*, Jini Kim* (co-first author), Yunjae Choi
Unlocking Creator-AI Synergy: Challenges, Requirements, and Design Opportunities in AI-Powered Short-Form Video Production
CHI 2024 Paper
Hajun Kim*, Jini Kim* (co-first author)
Usability Comparison between 2D and 3D Control Methods for the Operation of Hovering Objects
Drones 2023 (IF 4.8)
Daesung Lee, Hajun Kim, Heesoo Yoon, Wonsup Lee
Harmonionz, Rescue The Planet: A Voice Visualizing Game that Match Pitch with Color
CHI PLAY 21: Extended Abstracts
Hajun Kim*, Eunjin Choi*, Byeoli Choi* (co-first author)
Generational Empathy through Game Design Strategy: A Case Study on the Development of the Mobile Game <Ghost>
Korean Game Society 2021
Saeyeon Lee, Hajun Kim, Yougim Do, Haein Kim, Hyunah Jo, Kyunghyun Lee, Minsuck Do, Byungjoo Lee
Comparative Analysis of Controlling Drone
AHFE 2019
Hajun Kim, Seunchan Lim, Wonsup Lee
Connecting Generations: Game Design Guide for Adults in Their 50s and Older
Book funded by Ministry of Culture, Sports and Tourism and Korea Creative Content Agency
Byungjoo Lee, Youngim Do, Kyungmyun Lee, Junyoung Shin, Minseok Do, Seyun Lee, Injung Lee, Seokbeom Park, Hajun Kim, Jinyoung Lee, Hyunwook Lee, Taeun Kim, Haein Kim, Jongchang Park, Kyunghyun Lee, Hyunah Cho
Selected Research
IdeAmigos: Comparing User-Orchestrated and System-Orchestrated Multi-Agent Brainstorming
(Under review at CHI 2027)
, Jeongeon Park
- Compared user-orchestrated and system-orchestrated brainstorming with the same four AI agents to examine creative outcomes, agency, intent alignment, psychological ownership, and coordination burden.
- Conducted a within-subjects study with 16 students with HCI or UX coursework experience, using two counterbalanced 30-minute brainstorming sessions.
- User orchestration received higher average user-experience ratings, without statistically significant differences; creative outcomes varied by task, with broadly similar semantic diversity.
- Identified design implications for balancing orchestration control with attention, adapting support to tasks and stages, revisiting ideas, and encouraging critical engagement.
Generative AI as a Mediator in Creator Collaboration: Challenges, Design Opportunities, and Concerns
CSCW 2026 Paper
, Jini Kim* (co-first author), Yunjae Choi
- Examined how differences in expertise, expressive modalities, and creative priorities complicate common ground between game narrative writers and visual designers.
- Conducted a multi-method study with 10 narrative writers and 10 visual designers in South Korea, combining preliminary interviews, creative prompting, and participatory design.
- Identified opportunities for GenAI to translate creative intent, maintain shared context, and mediate communication, alongside concerns about reputation, trust, and reduced human communication.
- Proposed Dual-Space GenAI: a Personal Studio and Shared Workshop that connect individual creative work with collaboration while preserving control over contextual sharing.
Unlocking Creator-AI Synergy: Challenges, Requirements, and Design Opportunities in AI-Powered Short-Form Video Production
CHI 2024 Paper
, Jini Kim* (co-first author)
- Explored AI-powered Short-form Video Generators (ASVG) as creator collaboration tools via interviews (N=17) and design workshops (N=12).
- Analyzed participation workshops, defining three distinct creator types and their challenges.
- Conducted participatory workshops, using four distinct stimuli to help creators envision collaborative AI tools.
- Identified design opportunities (e.g., inspiration) tailored to the distinct creator workflows and key creator concerns (e.g., identity dilution) for collaborating with AI.
Image Generation Tool for Game IP Consistency & 1.5-Year Longitudinal Study
Project Lead, NEOWIZ
- Developed an image generation tool to support IP-consistent art creation across game studios.
- Conducted formative interviews with concept artists from eight in-house studios to analyze their needs.
- Built web-based tools integrating customized ComfyUI pipelines and fine-tuned models, and conducted a 1.5-year longitudinal study to analyze usage patterns and propose a next-generation tool.
A Multi-Character Dialogue System for Interactive Game Storytelling
Project Lead, NEOWIZ
- Developed an interactive multi-character dialogue system that allows users to create evolving stories through dynamic conversations.
- Designed an architecture that integrates each character’s unique persona and long-term memory into the dialogue flow.
- Implemented an algorithm that determines the most likely responding agent based on user input, ensuring coherent and context-aware interactions.
Personalizing Game Spaces Based on Individual Visual-Motor Skills
Master Thesis, Paper, Book
- Developed a novel difficulty balancing technique that personalizes game design from the start, based on user-skill and mental models.
- This technique adjusts game parameters by using a player’s pre-measured visual-motor skill (MTA model) to reach a target error rate.
- Conducted a comparative user study across three distinct games (SMG) (personal vs. average design), demonstrating personalization achieved designer-intended performance but yielded unexpected player experience results.