[XESAM] RDF vs .Desktop

[Gunnar Aastrand Grimnes]

Oh, the "a" element is just a shortcut for rdf:type, because you end
up typing it so often. You can of course use the full form instead...
or you can make up a xesam subPropertyOf rdf:type which you use
instead.

- Gunnar

On 18/05/07, Gunnar Aastrand Grimnes <gromgull at gmail.com> wrote:
> The characters are not redudant, the format doesn't care about
> whitespace, so you can't use the initial tab/spaces to know that all
> the triples belong to the first subject. The . character is used to
> terminate triple about a subject, ; is used introduce more (property,
> values) with the same subject and ',' (comma) can be used to have more
> values for the current subject and property.
>
> Of course you can come up with your own version where whitespace DOES
> matter, and these characters are removed, but that feels quite
> counter-productive to me.
>
> At the end of the day not so many people will write this format by
> hand. It's not hard to write a simple ontology editor that can
> serialize to proper N3 (I sent around some machine-generated examples
> in the irc meeting that still look nice)
>
> - Gunnar
>
> On 18/05/07, Mikkel Kamstrup Erlandsen <mikkel.kamstrup at gmail.com> wrote:
> > 2007/5/17, Evgeny Egorochkin <phreedom.stdin at gmail.com>:
> >
> > > Just realized that I KISSed examples too much and didn't notice a mistake.
> > > Need to sleep more :( and stop talking to myself...
> > >
> > > Anyway, resource has to have a prefix: or has to be included in <>
> > brackets.
> > >
> > > Also, I changed field naming to xesam:Audio.composer. This seems to be
> > better
> > > due to Jamie's wish to explicitly link DC and other external ontologies. I
> > > don't object this either.
> > >
> > > These two examples now look like this:
> > >
> > > =========    #1      ======================
> > > =====================================
> > > @prefix DC:
> > <http://freedesktop.org/standards/DC#>
> > > @prefix xesam:  <
> > http://freedesktop.org/standards/xesam#>
> > > @prefix :
> > <http://freedesktop.org/standards/xesam_base# >
> > >
> > > xesam:Audio.Composer
> > >         a                       :field;
> > >         :of_type                :string;
> > >         :has_parent     DC:Creator;
> > >         :name           "Composer"@EN;
> > >         :name           "Композитор"@RU;
> > >         :description    "Audio composer".
> > > =====================================
> > >
> > > =========     #2    =======================
> > > You can map rdf:Property to something other like file:Property
> > > not sure which is better. Any ideas for the prefix since xesam: is now
> > used?
> > > I still strongly advise to use #2 an not #1.
> > > =====================================
> > > @prefix rdf:
> > <http://www.w3.org/1999/02/22-rdf-syntax-ns# >.
> > > @prefix DC:
> > <http://freedesktop.org/standards/DC#>
> > > @prefix type:
> > <http://freedesktop.org/standards/xesam_base# >
> > > @prefix xesam:  <http://freedesktop.org/standards/xesam#>
> > > @prefix :
> > <http://www.w3.org/2000/01/rdf-schema# >
> > >
> > > xesam:Audio.Composer
> > >         a                               rdf:Property;
> > >         :range                  type:string;
> > >         :subPropertyOf          DC:Creator;
> > >         :label                  "Composer"@EN;
> > >         :label                  "Композитор"@RU;
> > >         :comment                "Audio composer".
> > > =====================================
> > >
> > > Will re-check this when I wake up once more :)
> > >
> > > Sorry for confusion.
> >
> > Thanks the examples.  I think it looks unintuitive that the "a" entry does
> > not have a :-prefix while the others don't. Also this format clearly contain
> > superfluous characters, like the leading :'s and trailing ;'s. If you write
> > a .desktop file it is pretty hard getting syntax errors...
> >
> > I liked the first example in your first mail the best, but I'm a bit
> > confused now... Was it valid or invalid? - And why did your prefer the one
> > with redundant characters?
> >
> > Cheers,
> > Mikkel
> >
> >
> >
>