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Summary: ADAPTIVE WEB-BASED INSTRUCTIONAL SYSTEMS AN
OVERVIEW
Paris Avgeriou
National Technical University of Athens
Department of Electrical and Computer Engineering
Software Engineering Laboratory
15780 Zografou, Athens, Greece
TEL: ++3010 7722487, FAX: ++3010 7722519
{pavger}@softlab.ntua.gr
The purpose of this paper is to present an overview of the current status of the
discipline of Adaptive Web-based Instructional Systems, emphasizing on research trends and state-
of-the-art techniques.
1 Introduction
Adaptive Hypermedia is a relatively young research field, which has been established on
the intersection of hypermedia systems and adaptive user-interfaces [De Bra et al. 1999a]. In
adaptive hypermedia, as in every hypermedia application, there is a structure of nodes and links
that connect them. In contrast though to the rest of the hypermedia applications, an adaptive
hypermedia system maintains a user model and alters the content, as well as the presentation of the
information, contained within the nodes on the fly. Links are also adaptive, that is their
presentation and functionality is adjusted as well. The aforementioned sustainable and constantly
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