JISC CETIS Semantic Technologies 2007-11-21

676 views
656 views

Published on

--


Plus ça change, plus c'est la même chose

Published in: Technology, Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
676
On SlideShare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
9
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

JISC CETIS Semantic Technologies 2007-11-21

  1. 1. Architecture Matters! Semantic Structures for Teaching and Learning JISC CETIS Conference 2007 Mikael Nilsson <mikael@nilsson.name> Royal Institute of Technology, Stockholm Uppsala University 1 The Knowledge Management Research Group
  2. 2. Semantic application support – a high-level view Implementing semantics requires high degree of ● system maturity Top-down: ● What processes do we want to support? – What key pieces of information are we processing? – What are the user roles and functions in the system? – Bottom-up: ● architectural stability and completeness – Web Architecture support for semantics is still ● being defined.... 2 The Knowledge Management Research Group
  3. 3. The Web Architecture perspective Web architecture now supports novel methods of ● getting at the data: SPARQL endpoints – REST-based services that emit RDF – Content-negotiation (“Linked Data” web) – Accepts: application/rdf+xml ● HTTP redirects ● GRDDL for automatic RDF views of XML data – Requires well-designed Web applications & URIs ● Part of Semantic Web is just well-designed Web ● presence (“follow your nose”)! 3 The Knowledge Management Research Group
  4. 4. Stabilising the architecture Microformat Semantics Ubiquitous semantics: GRDDL Linked Data Exposing semantics: Vocabulary Web presence (SKOS) RDF in HTML (RDFa) REST Services Services in the Web: Getting raw data: Content Negotiation SPARQL Descriptions: Domain vocabulary RDF RDF Schema OWL Identity & location: HTTP URIs 4 The Knowledge Management Research Group
  5. 5. Evolving the domain vocabularies ??? IEEE LOM in RDF Library Data (RDA) (March 2008) in RDF (2009) Dublin Core in Dublin Core in Dublin Core Terms HTML (Dec 2007) XML (2008) (Dec 2007) Dublin Core in RDF (June 2007) Microformat Semantics Dublin Core Abstract GRDDL Linked Data Vocabulary Web presence (SKOS) RDF in HTML (RDFa) Model (June 2007) REST Services Content Negotiation SPARQL HTTP URIs RDF RDF Schema OWL 5 The Knowledge Management Research Group
  6. 6. Comments? 6 The Knowledge Management Research Group

×