12 Nov 2010 mhausenblas   » (Journeyer)

Linked Open Data star scheme by example

I like TimBL’s 5-star deployment scheme for Linked Open Data. However, every time I use it to explain the migration path from ‘no-data-on-the-Web’ to the ‘Full Monty’, no matter if to students, in training sessions or to industry partners, there comes a point where it would be very handy to refer to a concrete example that demonstrates the entire scheme.

Well, there we go. At

http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/

you can find the examples for the 5-star scheme, ranging from a PDF to full-blown Linked Data (in RDFa).

Now, just for fun – what will the minimal temperature tomorrow be in Galway? See the power of Linked Open Data in action

… and in case you wanna play around with the data yourself, here is the SPARQL query for the previous answer:


PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX meteo: <http://purl.org/ns/meteo#>
PREFIX : <http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/gtd-5.html#>
SELECT ?tempC from <http://any23.org/rdfxml/http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/gtd-5.html>
WHERE {
:Galway meteo:forecast ?forecast .
?forecast meteo:predicted "2010-11-13T00:00:00Z"^^xsd:dateTime ;
meteo:temperature ?temp .
?temp meteo:celsius ?tempC .
}

Note: to execute the SPARQL query, paste it for example into http://sparql.org/sparql.html and toy around with the patterns.


Filed under: demo, Linked Data

Syndicated 2010-11-12 09:22:10 from Web of Data

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