Re: SPARQL-friendly alternative to rdf:Lists?

Dear David,
I apologize I just realized I replied to you only. I resend my email to the
group.

We experimented with ordering many years ago because of the needs we had in
several software projects.

One of the needs was the representation of the ordering of authors of
publications, but we had many others including representation of the flow
of the scientific discourse in publications.

The results are summarized in Collections Ontology (already mentioned by
Micheal):

The paper explain many of the principles and features:
http://www.semantic-web-journal.net/content/collections-ontology-creating-and-handling-collections-owl-2-dl-frameworks-0

Wiki/Ontology
http://code.google.com/p/collections-ontology/w/list

Best,
Paolo


On Sat, Oct 12, 2013 at 11:40 AM, Michael Brunnbauer <brunni@netestate.de>wrote:

>
> Hello David,
>
> I use the Collections Ontology: http://purl.org/co
>
> rdf:Lists should also be avoided because they cannot be used with OWL.
>
> Regards,
>
> Michael Brunnbauer
>
> On Fri, Oct 11, 2013 at 10:02:29AM -0400, David Booth wrote:
> > rdf:Lists are notoriously difficult to use in SPARQL if one wishes to
> > retain the *order* of the items in the list.  James Leigh and David Wood
> > made a nice proposal a few years ago to address this problem directly at
> > the RDF level,
> > http://www.w3.org/2009/12/rdf-ws/papers/ws14
> > but for whatever reasons, that work was not included in the charter of
> > the current RDF working group.  As a result people often use some other
> > means of representing ordered lists in RDF, such as by [item, index]
> pairs.
> >
> > For those who use an alternate way to represent an *ordered* list of
> > items in RDF (instead of rdf:List), I am wondering:
> >
> > 1. What *ordered* list representation do you prefer, and why?
> >
> > 2. Have there been any efforts toward standardizing alternative
> > *ordered* list representations in RDF?  E.g., has anyone written up a
> > spec on how they prefer to do it?
> >
> > Thanks,
> > David
>
> --
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-- 
Dr. Paolo Ciccarese
http://www.paolociccarese.info/
Biomedical Informatics Research & Development
Instructor of Neurology at Harvard Medical School
Assistant in Neuroscience at Mass General Hospital
Member of the MGH Biomedical Informatics Core
+1-857-366-1524 (mobile)   +1-617-768-8744 (office)

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