This thesis investigates the use of static, adaptive, adaptable and mixed-initiative
approaches to the personalisation of content and graphical user interfaces (GUIs).
This empirical study consisted of three experimental phases. The first examined the
use of static, adaptive, adaptable and mixed-initiative approaches to web content.
More specifically, it measured the usability (efficiency, frequency of error
occurrence, effectiveness and satisfaction) of an e-commerce website. The experiment
was conducted with 60 subjects and was tested empirically by four independent
groups (15 subjects each). The second experiment examined the use of adaptive,
adaptable and mixed-initiative approaches to GUIs. More specifically, it measured the
usability (efficiency, frequency of error occurrence, effectiveness and satisfaction) in
GUI control structures (menus). In addition, it investigated empirically the effects of
content size on five different personalised menu types. In order to carry out this
comparative investigation, two independent experiments were conducted, on small
menus (17 items) and large ones (29 items) respectively. The experiment was
conducted with 60 subjects and was tested empirically by four independent groups
(15 subjects each). The third experiment was conducted with 40 subjects and was
tested empirically by four dependent groups (5 subjects each). The aim of the third
experiment was to mitigate the drawbacks of the adaptive, adaptable and mixedinitiative
approaches, to improve their performance and to increase their usability by
using multimodal auditory solutions (speech, earcons and auditory icons). The results
indicate that the size of content affects the usability of personalised approaches. In
other words, as the size of content increases, so does the need of the adaptive and
mixed-initiative approaches, whereas that of the adaptable approach decreases. A set
of empirically derived guidelines were also produced to assist designers with the use
of adaptive, adaptable and mixed-initiative approaches to web content and GUI
control structure.
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/4879 |
| Date | January 2009 |
| Creators | Al Omar, Khalid H. |
| Contributors | Rigas, Dimitrios I. |
| Publisher | University of Bradford, School of Computing, Informatics and Media |
| Source Sets | Bradford Scholars |
| Language | English |
| Detected Language | English |
| Type | Thesis, doctoral, PhD |
| Rights | <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-nc-nd/3.0/88x31.png" /></a><br />The University of Bradford theses are licenced under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/">Creative Commons Licence</a>. |
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