Re: [foaf-dev] FOAF-RDF-2-(X)HTML+RDFa-izer?

If you want manual control over that sort of thing, there's XSPARQL that
allows you to write SPARQL queries that return XHTML.

Also, more simply, I've been working on using RDFa as a templating /
data-binding language for a sort of web framework. [1]
The basic idea is that this:

<p xmlns:foaf="http://xmlns.com/foaf/0.1/">
   <span property="foaf:name"/>
   <a href="" rel="foaf:knows"><span property="foaf:name"/></a>
</p>
*
*
gets filled out to this:

<p xmlns:foaf="http://xmlns.com/foaf/0.1/">

 <span property="foaf:name">Leif</span>
 <a href="http://john.com" rel="foaf:knows"><span
property="foaf:name">John</span></a>
 <a href="http://bill.com" rel="foaf:knows"><span
property="foaf:name">Bill</span></a>
</p>

The idea is just that "property" lists properties of the current
subject, and "rel" traverses to a new subject, filling out an "href"
or "resource" or whatever along the way.  Runs against Jena right now,
but that could easily be changed.

It's quite similar to what's used in Callimachus, a well-developed project,
it turns out. [2]

-Leif Warner

[1]
https://github.com/LeifW/MusicPath/blob/scala_2.8/src/test/scala/org/musicpath/RDFaTemplateTest.scala
[2] http://code.google.com/p/callimachus/
<http://code.google.com/p/callimachus/>
On Sun, Feb 6, 2011 at 12:26 PM, Bob Ferris <zazi-o0kiOr3Ba/[email protected]> wrote:

> Am 06.02.2011 21:13, schrieb Bob Ferris:
> > Hi Michael,
> >
> > Your project idea sounds interesting and the example page looks really
> > good. However, I can't find any hypertext link that references your FOAF
> > profile in a RDF serialization format. With RDFa the content negotiation
> > step is primarily not necessary. This enables an easier deployment. No
> > configuration for content negotiation is necessary. Although, it could
> > still be deployed and the (X)HTML+RDFa lives side by side with the other
> > RDF serialization formats. Whereby, the (X)HTML+RDFa document has the
> > advantage that it is out-of-the-box usable by human and machine agents.
> > It enables me to serve processable views for both humans and machines in
> > one document.
> > I think (X)HTML+RDFa deployment is crucial for FOAF profiles and for
> > Linked Data deployment in general (see for example GoodRelations).
>
> Btw, I saw your weighted skills in the profile. I co-developed recently
> the Cognitive Characteristics Ontology[1] which should exactly address
> such a modelling. That means, it enables you to describe cognitive
> pattern e.g., skills, expertises or interests, simply in form of a
> triple or extended. An extended version can include for instance a
> weighting of the cognitive pattern (by utilizing the Weighting
> Ontology[2]). Please have a look at the examples in the Cognitive
> Characteristics Ontology specification documentation e.g., this one [3].
> When applying a weighting it is especially important that the scale
> should be no out-of-band knowledge. It should rather be possible to
> discover that knowledge as needed. Hence, it is useful to also provide
> scales in machine processable form.
>
> Cheers,
>
>
> Bob
>
>
> PS: If have further questions re. the Cognitive Characteristics
> Ontology, don't hesitate to ask me ;)
>
>
> [1] http://purl.org/ontology/cco/core#
> [2] http://purl.org/ontology/wo/core#
> [3]
>
> http://purl.org/ontology/cco/cognitivecharacteristics.html#sec-cognitive-patterns-example
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>

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