Modelling Learning of New Keyboard Layouts

  • Posted on: 14 March 2017
  • By: Lan Chunyuan
Monday, March 13, 2017
Dr. Jussi Jokinen,Aalto University, Finland
Predicting how users learn new or changed interfaces is a long-standing objective in HCI research. This paper contributes to understanding of visual search and learning in text entry. With a goal of explaining variance in novices' typing performance that is attributable to visual search, a model was designed to predict how users learn to locate keys on a keyboard: initially relying on visual short-term memory but then transitioning to recall-based search. This allows predicting search times and visual search patterns for completely and partially new layouts. The model complements models of motor performance and learning in text entry by predicting change in visual search patterns over time. Practitioners can use it for estimating how long it takes to reach the desired level of performance with a given layout.

 Jussi Jokinen, PhD, is a postdoc in User Interfaces Laboratory, Aalto University, Finland.. From his doctoral studies, conducted in cognitive science in University of Jyväskylä, he has extensive experience on studying emotion in HCI, especially from the perspective of appraisal theory. Since 1.10.2015, he has been in prof. Antti Oulasvirta's User Interfaces Laboratory, Aalto University. There he has worked on studying the effect of age on the use of mobile devices, his work mainly consisting of controlled experiments and modelling. The modelling work involves him programming in Common Lisp, Python, and R, in order to implement computational user models and fit them to human data. Jokinen's work has been cited 138 times (Google Scholar h-index 7) since 2011, when he became an active researcher.