Semantic Mashup/linked data with Topic Maps and Subj3ct.com

Ravn Webveveriet, Networked Planet

Graham Moore, Networked Planet Reidar Bratsberg, Ravn Webveveriet

Semantic mashupGrep, NRK, Naturfag, Subj3ct

fredag 16. april 2010

W E B V E V E R I E T

Mission

• Present relevant educational videos from NRK at Naturfag.no, automatically

• Based on common connections with the curriculum (Grep)



Subj3ct.com

• Store subject identifiers, with names and descriptions

• Store equivalence between identifiers

• Stores links to data that contains statements about the subject



Players

• The curriculum (“Grep”); identifiers

• The national broadcasting service, NRK, educational television (nrk.no/skole); videos

• Learning resources in science (naturfag.no)

• Subj3ct; glue



Grep

• Official source for the curriculum is a topic map

• "Competence goals"

• PSIs: Published Subject Indicators



NRK

• National Broadcasting Corporation

• Educational videos

• Recently launched nrk.no/skole

• Topic Maps based

• Grep"competence goals"



Naturfag.no

• Norwegian Center for Science Education

• Learning resources for teachers


"gjøre rede for noen mulige konsekvenser av økt drivhuseffekt, blant annet i arktiske områder, og hvilke tiltak som settes i verk internasjonalt for å redusere økningen i drivhuseffekten"

The competence goal

http://psi.udir.no/7533d6f8-5ca7-42af-b7cc-fab4c1860a4d

The PSI



Subj3ct.comIdentifer resolution service

Atom feeds

Subj3ct.com

Grepnrk.no/skole (naturfag.no)




Atom feed



Atom feed entry, example from NRK



How to find related videos?

• Ask Subj3ct for representation URIs for the given subject

• Follow these URIs, and negotiate to find useful content

• Use the result as we please




?



Name, identifier, etc...[Representation, ...]

[Equivalence, ...]



From Subj3ct (from JSON)



TM-frag



Topic map fragment from NRK (JTM)



Demo



How easy was it?

• Time spent: 2 days

• Number of meetings: 1 conference call

• ~100 lines of code at Naturfag.no



Summary


Semantic Mashup/linked data with Topic Maps and Subj3ct.com

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