Xiaojun Bi
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| title | conference | date |
|---|---|---|
| Modeling Touch Point Distribution with Rotational Dual Gaussian Model | UIST 2021 | 2021-10-10 |
Proposes the Rotational Dual Gaussian (RDG) model that orients the bivariate Gaussian major axis along finger movement and uses projected width and height (via… | ||
| Voice and Touch Based Error-tolerant Multimodal Text Editing and Correction for Smartphones | UIST 2021 | 2021-10-10 |
A smartphone system called VT combines touch plus speech so users tap approximate location then speak insertions or editing commands; it generates substitution… | ||
| Variance and Distribution Models for Steering Tasks | UIST 2021 | 2021-10-10 |
Proposes a quadratic variance model that predicts movement-time variance as a quadratic function of index of difficulty with effectively zero linear term and… | ||
| TipText: Eyes-Free Text Entry on a Fingertip Keyboard | UIST 2019 | 2019-10-20 |
An invisible QWERTY-derived keyboard sits on the first segment of the index finger and accepts thumb‑tip taps; layout search simulates a probabilistic decoder… | ||
| Ultra-Low-Power Mode for Screenless Mobile Interaction | UIST 2018 | 2018-10-14 |
A working Ultra-Low-Power Mode modifies Android 7 on Nexus 5 and 6P to keep selected apps active, patches the modified hardware composer, and renders a… | ||
| WrisText: One-handed Text Entry on Smartwatch using Wrist Gestures | CHI 2018 | 2018-04-21 |
WrisText uses joystick-like wrist motion to select among six circular keys and implements a prototype watchband augmented with 12 proximity sensors plus a… | ||
| CommandBoard: Creating a General-purpose Command Gesture Input Space for Soft Keyboards | UIST 2017 | 2017-10-22 |
CommandBoard converts the area above a soft keyboard into an integrated command gesture space that recognizes freeform gestures and typed command names… | ||
| COMPASS: Rotational Keyboard on Non-Touch Smartwatches | CHI 2017 | 2017-05-06 |
COMPASS implements a circular 26-letter keyboard controlled by a rotational bezel and a physical select button, placing multiple cursors that the system… | ||
| Word Clarity as a Metric in Sampling Keyboard Test Sets | CHI 2017 | 2017-05-06 |
Defines a probabilistic per-word word clarity metric derived from Gaussian touch noise and key geometry, shows clarity explains up to 26.4% difference in error… | ||
| Predicting Finger-Touch Accuracy Based on the Dual Gaussian Distribution Model | UIST 2016 | 2016-10-16 |
Derives a predictive model from the Dual Gaussian Distribution Model that computes finger-touch success probability from target size alone, using two variance… | ||
| IJQwerty: What Difference Does One Key Change Make? Gesture Typing Keyboard Optimization Bounded ... | CHI 2016 | 2016-05-07 |
Optimization constrains (Qwerty1, QwertyH1, one-swap) produce IJQwerty by swapping I and J; layout generation uses a gesture-character metric and a speed… | ||
| Investigating Effects of Post-Selection Feedback for Acquiring Ultra-Small Targets on Touchscreen | CHI 2016 | 2016-05-07 |
Three staged experiments on smartphones and a smartwatch test a ripple post-selection visualization that shows the finger’s contact point after lift for 2–4 mm… | ||
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