Investigating UI Displacements in an Adaptive Mobile Homescreen

Lauren Norrie and Roderick Murray-Smith
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Lauren Norrie: School of Computing Science, University of Glasgow, Glasgow, Scotland
Roderick Murray-Smith: School of Computing Science, University of Glasgow, Glasgow, Scotland

International Journal of Mobile Human Computer Interaction (IJMHCI), 2016, vol. 8, issue 3, 1-17

Abstract: The authors present a system that adapts application shortcuts (apps) on the homescreen of an Android smartphone, and investigate the effect of UI displacements that are caused by the choice of adaptive model and the order of apps in the homescreen layout. They define UI displacements to be the distance that items move between adaptations, and they use this as a measure of stability. An experiment with 12 participants is performed to evaluate the impact of UI displacements on the homescreen. To make the distribution of apps in the experiment task less contrived, naturally generated data from a pilot study is used. The authors’ results show that selection time is correlated to the magnitude of the previous UI displacement. Additionally, selection time and subjective rating improve significantly when the model is easy to understand and an alphabetical order is used, conditions that increase stability. However, rank order is preferred when the model updates frequently and is less easy to understand. The authors present their approach to adapting apps on the homescreen, and initial insights into UI displacements.

Date: 2016
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