background image
have defined presentation definitions and saved them at www.myresearch.org/displaydef.xml.
They can then send users to their data, displayed according to their criteria, through a hyperlink
to: http://emblems.let.uu.nl/emblems/pif/showindex.php?
subset= http://www.myresearch.org/myindex.xml
&pres= http://www.myresearch.org/displaydef.xml
The presentation file here is optional.Without the presentation file, default display definitions
will be used.
As a starting point for building an index, the EPU provides the option of saving search results
as an index.
Clicking on the option results in generation of an RDF file (ill.2).
The file contains Dublin Core metadata to describe the index (ill. 3),
11
and then lists the
emblems named in the index.The ontology of classes and properties used in the index definition
(index, book, emblem) has been defined in an RDF schema.
12
Researchers can save the XML file
on their own machine and manipulate it manually, or alternatively, they can put the file on their
11
Dublin Core is a popular RDF
application, used for the exchange
of metadata in many (digital) libraries
and comparable institutions. See
Dublin Core Metadata Element Set,
Version 1.1: Reference Description,
http://dublincore.org/documents/
dces/.
12
Available at
http://emblems.let.uu.nl/emblems/
pif/pifontology.rdf.
Illustration 2: List of search results at the EPU
site, with the option of saving the set of search
results as an index to the site.
Illustration 3:The index file generated
from the search results window shown in
illustration 2.
125
DC_Emblemsbook_180204 19.02.2004 11:26 Uhr Seite 125