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Adaptive Hypermedia on the Web: techniques and applications
Paul De Bra, Eindhoven University of Technology, The Netherlands
Monday, Nov. 9th, 10 - 11 AM
This presentation describes how to create adaptive information services for and
on the Web, and shows example applications, mostly for courseware. Adaptive systems rely
on the construction of a "user model", which is used to determine which
information items a user needs next, and how these items should be presented. Adaptivity
on the Web requires that all user actions be registered. Traditionally all actions are
logged on the Web server, where the user model is stored. Dynamic HTML opens up
possibilities for moving subtasks to the browser.
Adaptive hypermedia systems can user static information pages and place adaptive
link structures in separate frames, or they can adapt the information pages directly, as
well as the links embedded in these pages. Examples of the former are ELM-ART and
Interbook, while the courseware developed at the Eindhoven University of Technology (for a
hypermedia course known as 2L670) illustrates the second technique.
 Paul De Bra graduated from the University of Antwerp (Belgium),
with a degree in Mathematics in 1981, and a doctorate in Computer Science in 1987. He was
a post-doc at Bell Laboratories in Murray Hill (New Jersey). In December 1989 he became
associate professor in the Information Systems group at the Eindhoven University of
Technology (Eindhoven, The Netherlands). Since August 1996 he is a full professor at the
same university, and heading the Information Systems group. After doing his (doctoral)
research on relational database theory, he switched to the field of hypertext around 1990.
Apart from research on hypertext reference models (resulting in the "Tower"
model, published at the ACM hypertext conference in 1992) and on search tools (including
the "Fish Search", published at WWW conferences in 1994) the Paul De Bra is best
known as the author of the course "Hypermedia Structures and Systems" (course
2L670) which is offered entirely through WWW, using adaptive hypertext. This course is
offered at six universities in The Netherlands and Belgium.
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