As a general answer: we currently do not consider a feature for adding 
citations to semantic facts, and I think it is not yet clear how this should 
best be done in general. If some concrete plans for doing this emerge here, 
we could consider this after SMW1.0 (we will have to start gathering new 
feature requests after the release anyway :-). 

As S said, n-ary relations are currently the only (still experimental) way of 
binding multiple facts together in one annotation, but I don't think that 
n-aries were really tailored for *this* use! So I would not really recommend 
this unless you have some properties where the citation really is almost a 
fixed part of the annotation.

See further comments below (also relating to Jeff's initial request).

On Samstag, 29. September 2007, Dan Bolser wrote:

<snip>

>
> I would really like to see some 'proper' support for citations in MW
> (or SMW). I think the biggest current problem is that a citation is
> not an 'independent object', but is always found in ad-hoc
> associations with facts. I think the fact source (the citation) should
> exist in the wiki as a separate page (object) with several internal
> relations, such as 'is paper' and 'in journal' etc. etc.

Good idea. See my homepage korrekt.org for how this can be used to make a 
citation database with dynamic publication listings. An example of such a 
list is http://korrekt.org/index.php/Publications_by_type. I will probably 
write some tutorial about this when I am done. It turns out that publications 
can have quite a number of properties, and formatting them with MW templates 
is some work too. I will also implement some bibtex conversion for MW when I 
find the time.

>
> In this way a fact is linked to a citation object, possibly along with
> a comment describing the nature of the link.

I am somewhat uncertain what a "fact" in general would be. I guess a lot of 
the citations in current wikis do not refer to single semantic facts, but to 
more complex or informal statements. I also would like to know *why* one 
would want to annotate semantic facts with sources. Do you want to take this 
into account for searching or browsing? I mean, having data available is 
always nice, but which current functions of SMW would actually benefit from 
citations that are attached to semantic facts (note that SMW queries have no 
explanation feature: they cannot currently tell you, which facts an answer 
was based on)?

Cheers,

Markus

>
> I am still learning about SMW stuff, so please slap me if the above looks
> dumb.
>
> I am planning to integrate some 'deep' citation support here;
>
> http://introductome.org/
>
>
> But for the time being its just an advert for wish-list functionality.
>
> Dan.
>
> > Hope this helps,
> > --
> > =S Page
> >
> >
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-- 
Markus Krötzsch
Institut AIFB, Universät Karlsruhe (TH), 76128 Karlsruhe
phone +49 (0)721 608 7362        fax +49 (0)721 608 5998
[EMAIL PROTECTED]        www  http://korrekt.org

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