• Share
  • Email
  • Embed
  • Like
  • Save
  • Private Content
RDF and the Semantic Web -- Joanna Pszenicyn
 

RDF and the Semantic Web -- Joanna Pszenicyn

on

  • 245 views

 

Statistics

Views

Total Views
245
Views on SlideShare
245
Embed Views
0

Actions

Likes
0
Downloads
1
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via as OpenOffice

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

    RDF and the Semantic Web -- Joanna Pszenicyn RDF and the Semantic Web -- Joanna Pszenicyn Presentation Transcript

    • RDF and the Semantic WebRDF and the Semantic WebJoanna PszenicynJoanna Pszenicyn
    • What we already know● RDF is a resource description that computerscan “understand”● RDF uses XML● Like XML, it is a metalanguage(defines syntax only, not semantics)● RDF & OWL (Web Ontology Language)are building blocks for the Semantic Web
    • Semantic Web
    • Semantic Web“The Semantic Web is a mesh of informationlinked up in such a way as to be easilyprocessable by machines, on a global scale.You can think of it as being an efficient way ofrepresenting data on the WWW, or as a globallylinked database.”Sean Palmer, The Semantic Web: an Introduction
    • Semantic Web and AI● Now:● Specialized programs“wise” only in a narrowfield● Someday maybe:● Global net ofinterlinked data● Programs which“hope to make sense”of any data theyencounter
    • RDF TriplesSubject – Predicate – ObjectorEntity – Attribute – ValueExample:Sky – has the color – blue
    • Namespaces● One RDF document can contain data in severalschemes● It is possible to combine Dublin Core withMarcXML● Or FOAF (Friend of a Friend)
    • Examples● VIAF – Virtual Authority File:http://viaf.org/● LoC Linked Data Service:http://id.loc.gov/
    • Pros & ConsPros: Anything that facilitates the interchangeof metadata is a good thing. RDF is a flexibleand extensible framework that could potentiallybe used in a wide variety of applications. Itfacilitates interoperability between Web-basedapplications involving the exchange ofmachine-readable information.
    • Pros & ConsCons: Some have described the syntax asclunky, and physically ugly to look at. There isrelatively limited tool support at this time,compared to what is available for, say, plainvanilla XML. At least one XML guru feels that thelevel of abstraction is so high that RDF is all butunusable by the vast majority of developers. (See"RDF and other monkey wrenches" by SeanMcGrath, http://www.itworld.com/nl/ebiz%5fent/03182003.)Kennedy, Shirl. 2004. RDF. Computers in Libraries
    • BibliographyBerners-Lee, Tim; James Hendler, and Ora Lassila. 2001.The Semantic Web. Scientific American 2001 (5).Gradmann, Stefan. 2005. rdfs:frbr--Towards an Implementation Model for Library Catalogs Using Semantic Web Technology.Cataloging & Classification Quarterly. 2005, Vol. 39 Issue 3/4, p. 63–75.Jul, Erik. MARC and Mark-Up. Cataloging & Classification Quarterly.2003, Vol. 36 Issue 3/4, p.141.Kennedy, Shirl. 2004. RDF. Computers in Libraries, 2004, Vol. 24,Issue 2.McGrath, Sean. 2003. RDF and other monkey wrenches. ITworld.Available at:http://www.itworld.com/nl/ebiz_ent/03182003Singer, Ross. Linked Library Data Now! Journal of ElectronicResources Librarianship. 2009, Vol. 21, Issue 2, p. 114–126.
    • Thank YouThank YouFor Your AttentionFor Your AttentionJoanna PszenicynJoanna Pszenicynj.pszenicyn@student.uw.edu.plj.pszenicyn@student.uw.edu.pl