On 29/09/2007, S Page <[EMAIL PROTECTED]> wrote:
> I'm responding, but I don't have the answers.
>
> Jeff Thompson wrote:
> > What are the plans in Semantic Mediawiki to capture citations?  I ask 
> > because,
> > for a "cited by" property, the subject is not the article, but a particular
> > assertion made within the article.
> >
> > For example the article for Germany:
> > http://ontoworld.org/wiki/Germany
> > says it has
> > [[area::357,050km²]]
> >
> > This might be followed by a citation link to the World Factbook, but the 
> > link is not
> > connected in a semantic way.
>
> N-ary relations in 1.0 pre-alpha let you create [[Property:Area]] with
> multiple types [[has type::Area; URI]] , and then you can say
>    has area  [[area::357,050km² ;
> https://www.cia.gov/library/publications/the-world-factbook/geos/gm.html]]
>
> The second value is optional.
>
> I made Property:Area_test Try it,
> http://ontoworld.org/wiki/Sandbox#Area_with_citation
>
> This currently exports in RDF as:,
>
>   <property:Area_test-23m-26sup2-3B-3B>
>    <smw:nary1
> rdf:datatype="http://www.w3.org/2001/XMLSchema#float";>357050000000</smw:nary1>
>    <smw:nary2
> rdf:datatype="">https://www.cia.gov/library/publications/the-world-factbook/geos/gm.html</smw:nary2>
>   </property:Area_test-23m-26sup2-3B-3B>
>
> The area type has units m², I think that's why they become an encoded
> part of the property name (#m&sup2;;).  Within this property, you just
> have to know that the second value is a citation.
>
> If you don't like the display format then you could use a template that
> provides alternate text after '|'.
>
> There might be a way to tie into Mediawiki's reference support
> (http://en.wikipedia.org/wiki/Wikipedia:Footnotes) so that the citation
>   appears in a footnote.  I think <ref> information is structural rather
> than semantic.

Can you expand on this a bit? I am not sure what you mean.


> > You might add a property inside the assertion like this:
> >
> > [[area::357,050km² [[cited 
> > by::https://www.cia.gov/library/publications/the-world-factbook/geos/gm.html]]
> >  ]]
>
> That won't work.  Nor can you have the citation in the alternate display
> text after '|'.  1.0 seems to better support wiki formatting in the
> displayed text, but not a nested property.
>
> > If not this, then are there plans to formally capture citations?
>
> I don't know.  People on this mailing list have discussed the
> limitations of n-ary relations as a collection of types rather than
> nested properties.

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.

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

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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