AHA! Version 2.0, More adaptation flexibility for authors

AHA! is a simple Web-based adaptive hypermedia system. Because of this simplicity it has been studied and experimented with in several research groups, see e.g. (Cini & Valdeni de Lima, 2002), (Calvi & Cristea, 2002), (Romero et al., 2002). This paper identifies shortcomings in AHA! and presents AHA! version 2.0 which tries to overcome the known problems with AHA! while maintaining its biggest asset: simplicity. We illustrate how different user modeling and adaptation aspects can be expressed in the new AHA! system (that would be difficult in the old system, and impossible in most other systems).