Sciweavers

Share
CHI
2001
ACM

Accuracy measures for evaluating computer pointing devices

11 years 6 days ago
Accuracy measures for evaluating computer pointing devices
In view of the difficulties in evaluating computer pointing devices across different tasks within dynamic and complex systems, new performance measures are needed. This paper proposes seven new accuracy measures to elicit (sometimes subtle) differences among devices in precision pointing tasks. The measures are target re-entry, task axis crossing, movement direction change, orthogonal direction change, movement variability, movement error, and movement offset. Unlike movement time, error rate, and throughput, which are based on a single measurement per trial, the new measures capture aspects of movement behaviour during a trial. The theoretical basis and computational techniques for the measures are described, with examples given. An evaluation with four pointing devices was conducted to validate the measures. A causal relationship to pointing device efficiency (viz. throughput) was found, as was an ability to discriminate among devices in situations where differences did not otherwis...
I. Scott MacKenzie, Tatu Kauppinen, Miika Silfverb
Added 01 Dec 2009
Updated 01 Dec 2009
Type Conference
Year 2001
Where CHI
Authors I. Scott MacKenzie, Tatu Kauppinen, Miika Silfverberg
Comments (0)
books