Sometimes you get some badly formatted RDF (or N3/Turtle) that's on one single line or generally unreadable. If you ever experience this, the rapper utility comes to rescue:

 .
@prefix dc:  .
...]]>

Today I needed to check if a hand-crafted RDF .n3 file was valid. Since I'm not a particular fan of online services that use my private documents, I looked for a tool I can run on my own machine.

A site about RDF validators gave me a link to Eyeball, part of the Jena semantic web framework.

It was not really easy to get it running since it you need to compile it yourself and there is no script to run it - you need to setup the Java class path yourself. You need both the bin-build and all *.jar files in lib/ in your class path. Getting all files in a line, separated by a colon is easy if you know how:

Having that, we only need to add bin-build/ to the class path and run it:

My talk, Utilizing and building the Semantic Web with PHP at FrOSCon 2010 is over. The slides might be of interest for you.

During the weekend of 21-22nd August, I'll be visting our beloved FrOSCon. Like in the last years, there will be an own PHP track, and I will be giving the talk Utilizing and building the Semantic Web with PHP. It is on Saturday 21st at 14:00.

See you there!

Gerade habe ich einen kleinen Vortrag beim Leipzig Semantic Web Tag über LESS gehalten.

LESS ist eine semantische Templateengine, mit der man Daten aus RDFa- und SPARQL-Endpoints in HTML umwandeln und damit auf seiner Website, Blog oder sonstwo anzeigen kann.

Hauptteil des Vortrags war eine Demonstration, die Folien sind hier runterzuladen.