Xiaojun Bi

Xiaojun Bi

Xiaojun Bi is a Human-Computer Interaction research scientist at Google in Mountain View, California. His research focuses on building interactive systems, implementing interaction techniques, and studying fundamental issues of user interface design especially on mobile devices. He has pioneered a number of techniques for mobile text entry systems, pen and touch based interactive systems, and large display interaction. His recent innovations such as keyboard correction & completion algorithm (CHI 2013) , bimanual gesture typing (UIST 2012), personalizing language models for text entry (CHI 2015) have been integrated into the Android keyboard, used by more than 100 million users. The keyboard evaluation system, Octopus (CHI 2013) has been widely used in the product development. Mobile Interaction Research at Google, a Google Research blog article highlights some of his recent research integrated into the Google products. Xiaojun Bi has authored 20 publications in the premier HCI publication venues such as CHI, UIST, and Human Computer Interaction Journal, and 20 US patents (11 issued and 9 pending). His research papers have received awards at CHI, the flagship conference in HCI. His paper studying the speed-accuracy tradeoff of finger touch input (FFitts Law, CHI 2013) won the Google 2013 Influential Paper Award. Xiaojun Bi is active in the HCI academic community. He constantly serves as an Associate Chair on the CHI and UIST program committees, and organizes/co-organizes CHI workshops to prompt research in computational interaction design and text input technology. He is now co-editing the book Computational Interaction Design. He was a program co-chair for Chinese CHI 2015, and now is a general co-chair for Chinese CHI 2016. Xiaojun Bi earned his Ph.D. from the Department of Computer Science at the University of Toronto. He received his Master's and Bachelor's degrees from Tsinghua University. He won the first place in the National Mathematical Olympiad (China) in his home province when he was a high school student, recruited by Tsinghua University with national college entrance examinations waived. Here is his personal webpage.
Authored Publications
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    Google
M3 Gesture Menu: Design and Experimental Analyses of Marking Menus for Touchscreen Mobile Interaction
Kun Li
Proceedings of the 2018 CHI Conference on Human Factors in Computing Systems, ACM, New York, NY, USA, 249:1-249:14
Effects of Language Modeling and its Personalization on Touchscreen Typing Performance
Andrew Fowler
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI 2015), ACM, New York, NY, USA, pp. 649-658
Optimizing Touchscreen Keyboards for Gesture Typing
Brian Smith
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI 2015), ACM, New York, NY, USA, pp. 3365-3374
Both Complete and Correct? Multi-Objective Optimization of Touchscreen Keyboard
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI 2014), ACM, New York, NY, USA, pp. 2297-2306
Preview
Octopus: Evaluating Touchscreen Keyboard Correction and Recognition Algorithms via “Remulation”
Shiri Azenkot
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI 2013), ACM, New York, NY, USA, pp. 543-552
Bayesian Touch - A Statistic Criterion of Target Selection with Finger Touch
Proceedings of UIST 2013 – The ACM Symposium on User Interface Software and Technology, ACM, New York, NY, USA, pp. 51-60
FFitts Law: Modeling Finger Touch with Fitts’ Law
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI 2013), ACM, New York, NY, USA, pp. 1363-1372
Bimanual gesture keyboard
Proceeding of UIST 2012 – The ACM Symposium on User Interface Software and Technology, ACM, New York, NY, USA, pp. 137-146