The Sun BabelFish Blog
Don't panic !
twinkle, twinkle little star
Twinkle is a beautiful little java GUI for playing with Sparql. Load a little RDF file, write out a little query and see what results you get. This is an excellent tool for prototyping an ontology as well as for learning Sparql. Many thanks to Leigh Dodds .
Anyone playing with the semantic web should of course have the python cwm installed on their computer. With this one can convert any rdf/xml file into the much easier to read N3 format. The latest version of cwm 1.1.0rc2 also allows one to query a file using Sparql. Just use the command line:
cwm --n3 somerdf.n3 --sparql=simple.sparql
where simple.sparql is a file containing a Sparql query such as
SELECT ?a ?c
WHERE { ?a a ?c . }
One can do a lot more with cwm. The CVS repository has loads of interesting examples.
Anyway it is great to have these tools to play with, and compare. At present Twinkle a lot faster that cwm, but cwm can do inferencing. On the inferencing side I am sure Twinkle will soon catch up.
Posted at 11:23AM Mar 08, 2006 [permalink/trackback] by Henry Story in SemWeb |
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