Metadata’s Next Top Model RDF and Its Impact on Digital Library Technology Juliet L. Hardesty, Metadata Analyst Digital Library Brown Bag February 18, 2015
What makes a good model? image
What makes a good model? Resource Description Framework (RDF)
Linked data/Semantic Web XML Vocabularies What isn’t RDF?
Conceptual Model Literally a framework for how to explicitly describe things and relate them to other explicitly-described things RDF Primer from W3C RDF Primer Rdfabout (readable tutorial) on Github by Josh Tauberer Rdfabout RDF for Librarians by Jenn Riley – Fall 2010 DLBB (handout) RDF for Librarianshandout What is RDF?
IU’s Digital Collections, ca present XML File (MODS) XML File (Fedora DC) XML File (RELS-EXT) XML File (other) Digital File (.mp3) Digital File (.mp4) Digital File (other) Fedora Object Digital File (.jpg)
Wylie House Museum photograph /datastreams /datastreams Sample Digital Object in Fedora 3
Relationships between objects in Fedora 3 IU’s use of RDF avalon:2368 avalon:2360 isPartOf Avalon Example predicate (property) subjectobject
Relationships between objects in Fedora 3 IU’s use of RDF iudl: iudl: isMemberOfCollection Finding Aid Example iudl: (199 page PDF) iudl: (page 1 JPG) isPartOf (folder of items) (finding aid)
Fedora 4
SPARQL image Allows for immediate changes to current resource Other namespaces can be added to extend properties of object Possibilities… flickr
MODS RDF Added modsrdf namespace Changed subjects from DC to MODS
Descriptive PREFIX modsrdf: Structural PREFIX ebucore: ?? PREFIX fobj: ?? PREFIX somethingElse: ?? Structural and Descriptive RDF
Data Store So what is RDF? at least, that’s where we seem to be heading now…
RDF in a lunchbox image
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