Changhoon Oh

schoolYonsei Universitybar_chart#322 Global Rank

Total Papers

HCI Rank

#322

Research Areas

Years Active

Recent Publications

Seen but Ignored: Understanding User Disengagement from Emergency Alerts in High-Frequency Contexts — A Case Study of South Korea

Public Warning Systems (PWS) are critical infrastructures for protecting lives during emergencies, yet many users increasingly ignore or disable alerts. Prior research has focused on attentive recipients, overlooking those who disengage mentally or behaviorally. We examine disengagement as a gradual process of psychol…

CHI '254th AuthorConversational Chatbots +2

BleacherBot: AI Agent as a Sports Co-Viewing Partner

Co-viewing, traditionally defined as watching content together in the same physical space, enhances emotional connections through shared experiences. With the rise of remote viewing during the COVID-19 pandemic, existing solutions, such as second-screen platforms and rule-based AI companions, struggle to facilitate me…

CHI '255th+ AuthorConversational Chatbots +2

Cinema Multiverse Lounge: Enhancing Film Appreciation via Multi-Agent Conversations

Advancements in large language models (LLMs) enable the development of interactive systems that enhance user engagement with cinematic content. We introduce \textit{Cinema Multiverse Lounge}, a multi-agent conversational system where users interact with LLM-based agents embodying diverse film-related personas. We inve…

CHI '25CorrespondingGenerative AI (Text, Image, Music, Video) +1

Understanding the Dynamics in Deploying AI-Based Content Creation Support Tools in Broadcasting Systems - Benefits, Challenges, and Directions

Recent advancements in generative artificial intelligence (AI) are profoundly impacting the broadcasting industry. While generative AI shows promise in supporting broadcasting professionals, its practical workflow integration remains underexplored. In this study, we conducted a user-focused investigation to understand…

CHI '25CorrespondingElectrical Muscle Stimulation (EMS) +2

ID.EARS: One-Ear EEG Device with Biosignal Noise for Real-Time Gesture Recognition and Various Interactions

In-ear EEG research has traditionally treated biological signals other than brainwaves, such as electromyography (EMG) and electrooculography (EOG), as unwanted noise to be removed. However, instead of discarding these signals, we developed ID.EARS, a single-ear, dry electrode-based device that utilizes these signals…

CSCW '24CorrespondingSession 1c: Tech Adoption: From Delivery Robots to Dumbphones

Delivering the Future: Understanding User Perceptions of Delivery Robots

Delivery robots are increasingly becoming part of our urban landscape. However, the general public is divided about their presence in public spaces; some welcome their usefulness, while others see them as intrusive or even threatening. Our study aims to understand users' perceptions of these robots to provide concrete…

CHI '243rd AuthorRecommender System UX +1

“Is Text-Based Music Search Enough to Satisfy Your Needs?” A New Way to Discover Music with Images

Music is intrinsically connected to human experience, yet the plethora of choices often renders the search for the ideal piece perplexing, especially when the search terms are ambiguous. This study questions the viability of employing visual data, specifically images, in innovative queries for music search, and it aim…

CHI '245th+ AuthorMotor Impairment Assistive Input Technologies +3

AccessLens: Auto-detecting Inaccessibility of Everyday Objects

In our increasingly diverse society, everyday physical interfaces often present barriers, impacting individuals across various contexts. This oversight, from small cabinet knobs to identical wall switches that can pose different contextual challenges, highlights an imperative need for solutions. Leveraging low-cost 3D…

CHI '24CorrespondingAgent Personality & Anthropomorphism +1

CloChat: Understanding How People Customize, Interact, and Experience Personas in Large Language Models

Large language models (LLMs) have facilitated significant strides in generating conversational agents, enabling seamless, contextually relevant dialogues across diverse topics. However, the existing LLM-driven conversational agents have fixed personalities and functionalities, limiting their adaptability to individual…

DIS '232nd AuthorHonorable MentionGenerative AI (Text, Image, Music, Video) +2

Creating Design Resources to Scaffold the Ideation of AI Concepts

Advances in artificial intelligence have enabled unprecedented technical capabilities, yet making these advances useful in the real world remains challenging. We engaged in a Research through Design process to improve the ideation of AI products and services. We developed a design resource capturing AI capabilities ba…

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