Yu-Jung Ko

schoolStony Brook Universitybar_chart#4384 Global Rank

Total Papers

HCI Rank

#4384

Research Areas

Years Active

Recent Publications

Modeling Touch-based Menu Selection Performance of Blind Users via Reinforcement Learning

Although menu selection has been extensively studied in HCI, most existing studies have focused on sighted users, leaving blind users' menu selection under-studied. In this paper, we propose a computational model that can simulate blind users’ menu selection performance and strategies, including the way they use techn…

UIST '201st AuthorForce Feedback & Pseudo-Haptic Weight +2

Modeling Two Dimensional Touch Pointing

Modeling touch pointing is essential to touchscreen interface development and research, as pointing is one of the most basic and common touch actions users perform on touchscreen devices. Finger-Fitts Law [4] revised the conventional Fitts’ law into a 1D (one-dimensional) pointing model for finger touch by explicitly…

CHI '192nd AuthorVisual Impairment Technologies (Screen Readers, Tactile Graphics, Braille) +2

Accessible Gesture Typing for Non-Visual Text Entry on Smartphones

Gesture typing--entering a word by gliding the finger sequentially over letter to letter-- has been widely supported on smartphones for sighted users. However, this input paradigm is currently inaccessible to blind users: it is difficult to draw shape gestures on a virtual keyboard without access to key visuals. This…

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