Hi Leen,
you can find a short example about sioc:topic in the SIOC Specs
(http://rdfs.org/sioc/spec/#term_topic ), i.e.:
:post_123 a sioc:Post ;
sioc:topic <http://dmoz.org/Business/Publishing_and_Printing/> .
<http://dmoz.org/Business/Publishing_and_Printing/> rdfs:label
"Publishing and Printing" .
In this example a general categorisation system such as DMOZ is used,
but you can use SKOS in the same way.
"On specialised sites, which may have a very specific category
hierarchy, generic categorisation systems are not suitable... For
these sites, the category hierarchy may be defined in the SKOS
framework and mappings between these concepts and a common category
system may be created. "
Another example is provided by the SIOC-Mediawiki exporter.
If you export in RDF a Wikipedia page (e.g. the 'SIOC' page) you will
get something like this:
http://ws.sioc-project.org/mediawiki/mediawiki.php?wiki=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FSemantically-Interlinked_Online_Communities
There you will see that sioc:topic is used to link a sioct:WikiArticle
to a sioct:Category , e.g.:
<sioct:WikiArticle rdf:about="http://en.wikipedia.org/wiki/
Semantically-Interlinked_Online_Communities">
<sioc:topic>
<sioct:Category rdf:about="http://en.wikipedia.org/wiki/
Category:Semantic_Web">
<rdfs:seeAlso [...] />
</sioct:Category>
</sioc:topic>
[...]
</sioct:WikiArticle>
And here it's important to note that sioct:Category is subclass of
skos:Concept.
Hope that helps.
Best,
Fabrizio
On Feb 14, 4:31 am, leen <[email protected]> wrote:
> hi there.
> what i understood sioc:topic is to link to skos: concept
> when i created an instance using protege under sioc:post class
> i cannot link this instance using object property (sioc:topic) to
> one of the instance of skos:concept
> how to make this link
> am i doing it wrongly
>
> another question, do u have any sample ontology which having an
> instance to show the connection between skos and sioc
>
> need help
> leen
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