which extends the functionality of keyword-based
searching by browsing functionalities. The browsing,
however, is not based on hyperlinks but rather on the
relationships that occur in medicinal ontologies,
which model medicinal learning objects as well as
their relationships to other medicinal concepts. In this
paper we motivate the need of such information
retrieval systems, and illustrate the use of Semantic
Web-technologies in developing the medicinal
ontologies on which the browsing is based on.