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The Semantic Web Command Line

Ever have wondered if there is something around like a command line for the Semantic Web? An online tool that allows you load and query a range of data sources? Well, peradventure Benjamin Nowack has developed a tool, called SPARQLBot, that does all this. It is really great. You launch your favourite IRC client (I use Hydra IRC) and then you (or a SPARQL geek near to you) defines a command that does something useful. Pull in some data, query it, smush it, etc.

Check it out! Play around with it. Experience how to instant-integrate data source on an RDF-basis. You will enjoy it. An example may better illustrate it: Imagine you've joined the #sparqlbot channel at irc:irc.freenode.net; you query for news (from an RSS channel):

mhausenblas>sparqlbot, load <FEEDURI>

mhausenblas>sparqlbot, news about XXX

What happens in the background is that the feed gets loaded into the store, and the command triggers a SPARQL query:

SELECT DISTINCT ?item ?o WHERE {
  ?item a rss:item ; ?p ?o .
  FILTER REGEX(?o, "$1", "i")
}

Isn't that great? I experienced it today. It really rocks :) You can add your own commands (given some basic SPARQL knowledge) and extend the bot's intelligence. Not to mention that this nice tool (being based on ARC2) even understands RDFa - very nice, indeed (try also the 'sw faq command'). However, the name SPARQLBot is to modest, IMHO. It is THE Semantic Web command line!

riese launched!

So finally we did it: Today we released the alpha version of riese, the 'RDFizing and Interlinking the EuroStat Data Set Effort'. Deploying linked-data using XHTML+RDFa is quite a new idea. We combined it with what we call User Contributed Interlinking, i.e. let user add semantic links in a Wiki-style manner. Check it out!

 

Btw, thanks Danny for your nice post on riese :)

RDFa news

As Mark pointed it out on his blog: RDFa is about to lift-off! Quick links:

Take a look at it and start playing around ;) 

 

GRDDL is a Recommendation!

Congrats to Dan Connolly and the GRDDL WG. Today the Semantic Web Activity News announced the GRDDL Recommendation status; see also:

An RDFa browser

Did you know that the Zitgist RDF browser actually supports RDFa? This is to say you can feed the browser with XHTML+RDFa (see example) and it will render it! 

Ok. It has some minor hiccups (seems to duplicate each prop) ... but hey ... it's a start.

RDFa applications

Two new RDFa applications are available:

Check it out ;)

RDFa news

Mark Birbek explains how to use RDFa in XHTML 1 - STOP - The RDFa specification (incl. Primer, Syntax, Use Cases, and Test Suite) is on its way - STOP - Bob DuCharme has a nice article that introduces RDFa step by step - STOP - Benjamin Nowack wrote a form-based, semi-automatic comparison matrix for RDFa, eRDF and microformats.

Another good news: Generating RDFa from Movable Type

Enjoy reading Bob DuCharme's blog post on how to generate RDFa from Movable Type.

RDF in HTML and Microformats

When Seth states that "[...] Microformats have succeeded here, allowing me to very easily embed metadata into XHTML.", I'd like to reply: You can virtually embed RDF into (X)HTML using RDFa; just as easy as that + you get: multiple Vocs in one place via namespaces, one-tool-for-all-formats, etc.

Want to try out? Go have a look at RDFa bookmarklets

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