Changyang He

schoolMax Planck Institutebar_chart#1400 Global Rank

Total Papers

HCI Rank

#1400

Research Areas

Years Active

Recent Publications

``What If My Face Gets Scanned Without Consent'': Older Adults' Experiences with Biometric Payment

Biometric payment, i.e., biometric authentication implemented in digital payment systems, can reduce memory demands and streamline payment for older adults. However, older adults' perceptions and practices regarding biometric payment remain underexplored. We conducted semi-structured interviews with 22 Chinese older a…

CHI '261st AuthorAI Ethics, Fairness & Accountability +2

When Feasibility of Fairness Audits Relies on Willingness to Share Data: Examining User Acceptance of Multi-Party Computation Protocols for Fairness Monitoring

Fairness monitoring is critical for detecting algorithmic bias, as mandated by the EU AI Act. Since such monitoring requires sensitive user data (e.g., ethnicity), the AI Act permits its processing only with strict privacy measures, such as multi-party computation (MPC), in compliance with the GDPR. However, the effec…

CSCW '255th+ AuthorDeaf and Hard-of-Hearing Research

EchoAid: Enhancing Livestream Shopping Accessibility for the DHH Community

Livestream shopping platforms often overlook the accessibility needs of the Deaf and Hard of Hearing (DHH) community, leading to barriers such as information inaccessibility and overload. To tackle these challenges, we developed EchoAid, a mobile app designed to improve the livestream shopping experience for DHH users…

CHI '255th+ AuthorAI Ethics, Fairness & Accountability +3

'Even When Success Seems Impossible, I Keep Streaming': How Do Chinese Elderly Streamers Interact with Platform Algorithmic (In)visibility

Recent research within the HCI community has illuminated the challenges faced by marginalized groups on algorithm-driven livestreaming platforms. However, there is a notable gap in understanding how elderly livestreamers interact with the platform content moderation and algorithmic (in)visibility. This study investiga…

CHI '252nd AuthorHuman-LLM Collaboration +2

RemiHaven: Integrating "In-Town" and "Out-of-Town" Peers to Provide Personalized Reminiscence Support for Older Drifters

With increasing social mobility and an aging society, more older adults in China are migrating to new cities, known as “older drifters”. Due to fewer social connections and cultural adaptation, they face negative emotions such as loneliness and depression. While reminiscence-based interventions have been used to impro…

CHI '252nd AuthorUniversal & Inclusive Design +1

"Auntie, Please Don't Fall for Those Smooth Talkers": How Chinese Younger Family Members Safeguard Seniors from Online Fraud

Online fraud substantially harms individuals and seniors are disproportionately targeted. While family is crucial for seniors, little research has empirically examined how they protect seniors against fraud. To address this gap, we employed an inductive thematic analysis of 124 posts and 16,872 comments on RedNote (Xi…

CHI '254th AuthorOnline Learning & MOOC Platforms +1

CoKnowledge: Supporting Assimilation of Time-synced Collective Knowledge in Online Science Videos

Danmaku, a system of scene-aligned, time-synced, floating comments, can augment video content to create `collective knowledge'. However, its chaotic nature often hinders viewers from effectively assimilating the collective knowledge, especially in knowledge-intensive science videos. With a formative study, we examined…

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