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Daryl Weir

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Publications by Daryl Weir (bibliography)

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2012
 
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Weir, Daryl, Rogers, Simon, Murray-Smith, Roderick and Lochtefeld, Markus (2012): A user-specific machine learning approach for improving touch accuracy on mobile devices. In: Proceedings of the 2012 ACM Symposium on User Interface Software and Technology 2012. pp. 465-476.

We present a flexible Machine Learning approach for learning user-specific touch input models to increase touch accuracy on mobile devices. The model is based on flexible, non-parametric Gaussian Process regression and is learned using recorded touch inputs. We demonstrate that significant touch accuracy improvements can be obtained when either raw sensor data is used as an input or when the device's reported touch location is used as an input, with the latter marginally outperforming the former. We show that learned offset functions are highly nonlinear and user-specific and that user-specific models outperform models trained on data pooled from several users. Crucially, significant performance improvements can be obtained with a small (≈200) number of training examples, easily obtained for a particular user through a calibration game or from keyboard entry data.

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Weir, Daryl (2012): Machine learning models for uncertain interaction. In: Adjunct Proceedings of the 2012 ACM Symposium on User Interface Software and Technology 2012. pp. 31-34.

As interaction methods beyond the static mouse and keyboard setup of the desktop era -- such as touch, gesture sensing, and visual tracking -- become more common, existing interaction paradigms are no longer good enough. These new modalities have high uncertainty, and conventional interfaces are not designed to reflect this. Research has shown that modelling uncertainty can improve the quality of interaction with these systems. Machine learning offers a rich set of tools to make probabilistic inferences in uncertain systems -- this is the focus of my thesis work. In particular, I'm interested in making inferences at the sensor level and propagating uncertainty forward appropriately to applications. In this paper I describe a probabilistic model for touch interaction, and discuss how I intend to use the uncertainty in this model to improve typing accuracy on a soft keyboard. The model described here lays the groundwork for a rich framework for interaction in the presence of uncertainty, incorporating data from multiple sensors to make more accurate inferences about the goals of users, and allowing systems to adapt smoothly and appropriately to their context of use.

© All rights reserved Weir and/or ACM Press

 
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Changes to this page (author)

23 Nov 2012: Modified
23 Nov 2012: Added

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Upcoming Courses

go to course
User-Centred Design - Module 3
70% booked. Starts in 25 days
 
 

Featured chapter

Marc Hassenzahl explains the fascinating concept of User Experience and Experience Design. Commentaries by Don Norman, Eric Reiss, Mark Blythe, and Whitney Hess

User Experience and Experience Design !

 
 

Our Latest Books

 
 
The Social Design of Technical Systems: Building technologies for communities. 2nd Edition
by Brian Whitworth and Adnan Ahmad
start reading
 
 
 
 
Gamification at Work: Designing Engaging Business Software
by Janaki Mythily Kumar and Mario Herger
start reading
 
 
 
 
The Social Design of Technical Systems: Building technologies for communities
by Brian Whitworth and Adnan Ahmad
start reading
 
 
 
 
The Encyclopedia of Human-Computer Interaction, 2nd Ed.
by Mads Soegaard and Rikke Friis Dam
start reading