Re: Functions in N3 (was: Re: What Happened to the Semantic Web?)

* Jos De Roo <jos.deroo@agfa.com> [2017-12-02 12:36+0100]
> +1
> i.e. I would implement them and add them to
> https://github.com/josd/eye/blob/master/eye-builtins.n3
> well, at least try :-)

is this basically IRIs and an RDF grammar for the operators?
the functions already have IRIs from XPath and XML Schema.


> Kind regards,
> Jos
> 
> Jos De Roo   | Agfa HealthCare
> R&D engineer | Cognitive Computing Competence Center
> http://josd.github.io/
> 
> Agfa HealthCare NV, Moutstraat 100, B-9000 Gent, Belgium
> http://www.agfa.com/healthcare
> 
> -----Martynas Jusevi&#269;ius <martynas@atomgraph.com> wrote: -----
> 
> > To: Gregory Williams <greg@evilfunhouse.com>
> > From: Martynas Jusevi&#269;ius <martynas@atomgraph.com>
> > Date: 12/02/2017 01:18AM
> > Cc: Andreas Harth <andreas@harth.org>, "Sean B. Palmer"
> > <sean@miscoranda.com>, SW-forum Web <semantic-web@w3.org>,
> > public-lod <public-lod@w3.org>, www-archive <www-archive@w3.org>,
> > Ivan Herman <ivan@w3.org>
> > Subject: Re: Functions in N3 (was: Re: What Happened to the Semantic
> > Web?)
> > 
> > Gregory,
> > are you still planning to upload the vocabularies?
> > I have a use case for it :) To specify the function to apply in a
> > FILTER. I'd much rather use a function URI than a label literal.
> > 
> > Martynas
> > On Fri, Oct 13, 2017 at 5:30 PM, Gregory Williams
> > <greg@evilfunhouse.com> wrote:
> > /cc Ivan Herman
> > 
> > 
> > 
> > On Oct 13, 2017, at 8:14 AM, Andreas Harth <andreas@harth.org>
> > wrote:
> > 
> > >
> > 
> > > The lack of URIs for SPARQL functions has irked me for a while.
> > 
> > >
> > 
> > > We have been using N3 as rule syntax in our Linked Data-Fu system,
> > 
> > > and have found that the CWM builtins [1] are problematic.  Some
> > really
> > 
> > > useful functions are missing (such as isLiteral(), isURI,
> > datatype()),
> > 
> > > and some of the existing functions are underspecified concerning
> > the
> > 
> > > support for datatypes.
> > 
> > >
> > 
> > > SPARQL has a much more complete set of functions and it would be
> > nice to
> > 
> > > be able to use those in N3.  Defining a prefix for the SPARQL
> > builtin
> > 
> > > functions (and operators) should be easy.  I wonder why nobody has
> > done
> > 
> > > that already.
> > 
> > 
> > 
> > During the SPARQL 1.1 WG, it was always my intention to define IRIs
> > for all the built-in functions. We even set up a namespace for
> > it[1]. Alas, it seems it was never properly populated, as BOUND is
> > the only function with an assigned IRI. Maybe it would still be
> > possible to get those all assigned&#8212;I still have local working copies
> > of what I think should be in /ns/sparql.
> > 
> > 
> > 
> > Thanks,
> > 
> > Greg
> > 
> > 
> > 
> > [1] https://www.w3.org/ns/sparql
> > 
> >
> 

-- 
-ericP

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Received on Saturday, 2 December 2017 12:04:06 UTC