| Conference |
| Type of Publication |
| A Study on User Acceptance of Error Visualization
Techniques |
| Title |
|
|
| Authors |
| Proc. of the International Workshop on Human Control
of Ubiquitous Systems (HUCUBIS 2008), Dublin, Ireland, 25. July 2008 |
| Published in |
| Location-based services in general require
information about the position of certain objects. For instance,
for a navigation service the position of the user needs to be
known. This position is usually provided by a positioning system.
However, it is typical for all positioning systems that they are
not perfect. This means that the positions they produce inherit
position errors. Nowadays, usually only the position estimate is
shown to the user even though a quality measure for the position
error is provided by most positioning systems. To increase the
user’s trust in location-based services and the usefulness of
these services, the user should be informed about the uncertainty
of position estimates as well. Thus, in this paper we investigate
different visualization methods for the position and the position
error. We carried out a user study to obtain information about
the usefulness of the different methods. For this, we developed a
questionnaire that contains nine different position and position
error visualization methods. Furthermore, the questionnaire
covers four typical application scenarios to be able to
investigate whether users prefer different visualization methods
for different applications. The results indicate that users are
indeed interested in the position error they have to face.
Further, they prefer a simple in-map representation of the
position and the position error. These results are constant over
different applications. |
| Abstract |
|
context-aware computing
pervasive computing
location-based services
positioning error
information visualization
user study
|
| Keywords |
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