Hypertext functionality: A theoretical framework

Fourth generation hypermedia: some missing links for the World Wide Web

“…The hypermedia research literature has produced other link taxonomies designed purely for the benefit of researchers and system developers, which systems will never display to readers (DeRose, 1989;Rao & Turoff, 1990;Parunak, 1991a;. These include categories such as extensional, inclusive, intensional, implicit and isomorphic (DeRose, 1989).…”

“…A single link type defining a conceptual relationship between nodes can have multiple labels representing the type tailored for different contexts (Rao & Turoff, 1990). The keywords attached to a link can include its type and labels.…”

A case study in systematic hypermedia design

“…This led us, for example, not only to include additional entities and attributes, but also to capture additional relationships facilitating navigation (e.g., for the sake of adding a navigational relationship, identifying an Event item as within a publication). The power of RMM also lies in the fact that the E-R model is directly reflected at the presentation layer thereby reducing both functional opacity (mismatch between the reader's mental model and the interface) [53] and system opacity (mismatch between the implementation model and the interface) [54].…”

Some hypermedia ideas for the WWW

“…Other link taxonomies are designed purely for the benefit of researchers and system developers, which systems will never display to readers (De Rose 1989) (Parunak 1991) (Rao and Turoff 1990). These include categories such as extensional, inclusive, intensional, implicit and isomorphic (De Rose 1989).…”

“…System developers can use these taxonomies in determining appropriate navigation strategies and ways of conveying context for different categories of links underlying sophisticated hypermedia environments. Rao et al (1990) also include a theoretical node taxonomy for the same purpose.…”