Performance Optimizations of Virtual Keyboards for Stroke-Based Text Entry on a Touch-Based Tabletop
Authors: Jochen Rick - The Open University, Milton Keynes, United Kingdom
location: UIST’10, October 3–6, 2010, New York, New York, USA
Hypothesis:
The Author wants to find a better way to write on touch pad technology. To better recognize, and use the human hand on tablet like user interfaces. He thinks that shape writing would be better then using the conventional Qwerty keyboards on tablets and cellphones, since there's no places for the hand to rest, and properly type the speed the user is used too.
Methods:
Testing began with 8 Participants s (6 right-handed, 2 left-handed) to determine speed and efficantcy using different strokes. Participants completed a series of stroke sequences through four points, in order from 1 to 4. A four-point sequence was chosen so that each stroke sequence included a beginning (beginning a stroke), a middle (continuing an existing stroke), and an end (completing the stroke by stopping at the end point and lifting the finger). They were evaluated on the tasks to see the differences in the strokes, and accuracy. The Authors then calculated the speed at witch the users would be typing on known existing layouts for cellphone keyboards.
Results:
From calculating all data gaind from the users, he showed a chart in wich using existing layouts for cellphone and tablet keyboard deal with input. It turns out, that using the Qwerty keyboard really isn't as fast as we thought, because others would be faster. (Compare Qwerty to all the others in tapping speed). The model introduced in this paper predicts that a switch from tapping keys on Qwerty to stroking them will bring a speed improvement of 17.%. While that is a large improvement as far as keyboard performance goes, a substantially larger gain can be achieved by simultaneously switching to a different layout. Stroking with OPTI-II is predicted to be over 50% faster than tapping with Qwerty.
Discussion:
The model of stroke timing introduced in this paper provides a useful tool for comparing the performance of different keyboard layouts for stroke-based text entry. And it gives enough evidence that there is other tools in the tech world that may increase the speed of using Cellphone/Tablet keyboards.
I thought it was intresting to know that i could use a different keyboard and type faster... But i really dont want to learn how to type on a new surface. In WWII they changed the keyboard to the QWERTY system for a reason, or slowing the typing down. I knew that qwerty wasn't the best, but i also know that it was men to create accuracy (and not to jam the type writers). Maybe going back to the old system prior to WWII could become advantages to use, or even some of the keyboards listed above in the picture.
Testing began with 8 Participants s (6 right-handed, 2 left-handed) to determine speed and efficantcy using different strokes. Participants completed a series of stroke sequences through four points, in order from 1 to 4. A four-point sequence was chosen so that each stroke sequence included a beginning (beginning a stroke), a middle (continuing an existing stroke), and an end (completing the stroke by stopping at the end point and lifting the finger). They were evaluated on the tasks to see the differences in the strokes, and accuracy. The Authors then calculated the speed at witch the users would be typing on known existing layouts for cellphone keyboards.
Results:
From calculating all data gaind from the users, he showed a chart in wich using existing layouts for cellphone and tablet keyboard deal with input. It turns out, that using the Qwerty keyboard really isn't as fast as we thought, because others would be faster. (Compare Qwerty to all the others in tapping speed). The model introduced in this paper predicts that a switch from tapping keys on Qwerty to stroking them will bring a speed improvement of 17.%. While that is a large improvement as far as keyboard performance goes, a substantially larger gain can be achieved by simultaneously switching to a different layout. Stroking with OPTI-II is predicted to be over 50% faster than tapping with Qwerty.
Discussion:
The model of stroke timing introduced in this paper provides a useful tool for comparing the performance of different keyboard layouts for stroke-based text entry. And it gives enough evidence that there is other tools in the tech world that may increase the speed of using Cellphone/Tablet keyboards.
I thought it was intresting to know that i could use a different keyboard and type faster... But i really dont want to learn how to type on a new surface. In WWII they changed the keyboard to the QWERTY system for a reason, or slowing the typing down. I knew that qwerty wasn't the best, but i also know that it was men to create accuracy (and not to jam the type writers). Maybe going back to the old system prior to WWII could become advantages to use, or even some of the keyboards listed above in the picture.
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