Guenter Hilmer - Phd Thesis - Glamorgan Dspace - University of ...

2.11 Adaptive Hypermedia System 2 LITERATURE REVIEW
2.11.1 Link adaptation
The adaptation of links inside a hypermedia document is one of the major topics of
adaptive hypermedia. The navigation of the user through the hyperspace is hereby
the main focus. Brusilovsky identifies several techniques for link adaptation, for
example [143]:
• link hiding
• link suggestion
• sorted list
It is important for this project to understand the different types of possible link
adaptation techniques. Because of the importance of adaptive hypermedia for ed-
ucational hypermedia systems it is also necessary to review the content adaptation
techniques in AHSs.
2.11.2 Content adaptation
Content adaptation in general is the modification of the content depending on the
user’s profile or his navigation through the content as stated by Brusilovsky [143].
Different techniques of content adaptation are for example:
• content hiding
• display of different content
• display of additional content
Research is also going on in this area, therefore additional methods will be or have
already been developed. However, it is rather a difficult task to effectively change
the content based on the user’s navigation through the hyperspace. Therefore, it
will be considered to be out of scope for this PhD project. Furthermore, the field
of education has always been a research area of AHSs [143]. Every AHS that
not only displays prepared content to a student but also changes certain styles of
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