TY - GEN
T1 - Optimizing touchscreen keyboards for gesture typing
AU - Smith, Brian A.
AU - Bi, Xiaojun
AU - Zhai, Shumin
N1 - Publisher Copyright:
© Copyright 2015 ACM.
PY - 2015/4/18
Y1 - 2015/4/18
N2 - Despite its growing popularity, gesture typing suffers from a major problem not present in touch typing: Gesture ambiguity on the Qwerty keyboard. By applying rigorous mathematical optimization methods, this paper systematically investigates the optimization space related to the accuracy, speed, and Qwerty similarity of a gesture typing keyboard. Our investigation shows that optimizing the layout for gesture clarity (a metric measuring how unique word gestures are on a keyboard) drastically improves the accuracy of gesture typing. Moreover, if we also accommodate gesture speed, or both gesture speed and Qwerty similarity, we can still reduce error rates by 52% and 37% over Qwerty, respectively. In addition to investigating the optimization space, this work contributes a set of optimized layouts such as GK-D and GK-T that can immediately benefit mobile device users.
AB - Despite its growing popularity, gesture typing suffers from a major problem not present in touch typing: Gesture ambiguity on the Qwerty keyboard. By applying rigorous mathematical optimization methods, this paper systematically investigates the optimization space related to the accuracy, speed, and Qwerty similarity of a gesture typing keyboard. Our investigation shows that optimizing the layout for gesture clarity (a metric measuring how unique word gestures are on a keyboard) drastically improves the accuracy of gesture typing. Moreover, if we also accommodate gesture speed, or both gesture speed and Qwerty similarity, we can still reduce error rates by 52% and 37% over Qwerty, respectively. In addition to investigating the optimization space, this work contributes a set of optimized layouts such as GK-D and GK-T that can immediately benefit mobile device users.
KW - Gesture typing
KW - Shape writing
KW - Text entry
KW - Touchscreen keyboard optimization
KW - Word-gesture keyboard
UR - https://www.scopus.com/pages/publications/84950994528
U2 - 10.1145/2702123.2702357
DO - 10.1145/2702123.2702357
M3 - Conference contribution
AN - SCOPUS:84950994528
T3 - Conference on Human Factors in Computing Systems - Proceedings
SP - 3365
EP - 3374
BT - CHI 2015 - Proceedings of the 33rd Annual CHI Conference on Human Factors in Computing Systems
PB - Association for Computing Machinery
T2 - 33rd Annual CHI Conference on Human Factors in Computing Systems, CHI 2015
Y2 - 18 April 2015 through 23 April 2015
ER -