Hardman, Bulterman, van Rosum: pages (v37/n02/HARD94)
The Amsterdam Hypermedia Model: Adding Time and Context to the Dexter Model
On the surface, hypermedia is a simple and natural extension of multimedia and hypertext: multimedia provides a richness in data types
that facilitates flexibility in expressing information, while hypertext provides a control structure that supports an elegant way
of navigating through this data in a content based manner.
Unfortunately, the concepts that apply to collections of static information do not all translate well to complex collections of dynamic
informatlon. What does it mean, for example, to follow a Iink in a
hypermedia presentation when the source node consists of nonpersistent data? Does the source presentation freeze, does it go away,
do parts of it go away? Similarly, how should the synchronizatlon
relationships within and among elements in a composite component
be defined? Is this part of the hypermedia model or part of a data
storage or data presentation model? In our view, a general hypermedia model needs to he able to specify both the conventional Iink
based navigation elements oF hypertext and the complex timing and
presentation relationships found in multimedia presentations. Such
a model is presented here.
Copyright 1996 Edward A. Fox