Re: on constraints

Thanks again for your feedback Peter,

I tried to incorporate your comments on the latest commits
https://github.com/w3c/data-shapes/commits/gh-pages

let me know if these editorial changes resolve your comments
(this is not an official WG response but will be tracked by the WG)

On Fri, Sep 30, 2016 at 4:48 PM, Peter F. Patel-Schneider <
pfpschneider@gmail.com> wrote:

> If you remember, it used to be that constraint parameters could not be
> directly attached to shapes.  Instead there had to be a "local constraint"
> atttached to the shape and then constraint parameters were attached to
> that.
>
> Now instead constraint parameters (*not* constraints) are attached
> directly to
> shapes and the shape itself takes the role that used to be played by the
> "local constraint".
>
> Even the use of "attach" is dodgy here.  Attached how?  It is better to
> talk
> about triples with a particular subject, object, and predicate.  Shorthand
> constructions may be easier to read as English, but it can easily turn out
> that they don't have the necessary precision.
>
>
> There has also been a terminology shift, again for precision.  The object
> of
> an sh:shape triple is a shape, which is now also a constraint.  So for
> sh:shape to group focus node constraints (not constraint parameters)
> something
> like
>
>   sh:shape [ sh:shape [....] ; sh:shape [...] ]
>
> is required.
>
>
> At least this is my understanding of the current mechanisms and
> terminology.
>
>
> Peter F. Patel-Schneider
> Nuance Communications
>
>
>
>
> On 09/30/2016 01:43 AM, Dimitris Kontokostas wrote:
> > Thank you for the feedback Peter,
> >
> > I tried to address some of your comments here:
> > https://github.com/w3c/data-shapes/commit/8d8df0e57361558674bd65492cebd9
> c7358140c7
> >
> > On Fri, Sep 30, 2016 at 3:46 AM, Peter F. Patel-Schneider
> > <pfpschneider@gmail.com <mailto:pfpschneider@gmail.com>> wrote:
> >
> >
> >     "Focus node constraints are attached directly to Shapes"
> >
> >     Not any more.
> >
> >     "sh:shape can be used to group focus node constraints."
> >
> >     Not any more, except by using sh:shape itself, I guess.
> >
> >
> > Can you please elaborate a bit further on these two comments?
> >
> > Best,
> > Dimitris
> >
> >
> >
> >
>
>


-- 
Dimitris Kontokostas
Department of Computer Science, University of Leipzig & DBpedia Association
Projects: http://dbpedia.org, http://rdfunit.aksw.org,
http://aligned-project.eu
Homepage: http://aksw.org/DimitrisKontokostas
Research Group: AKSW/KILT http://aksw.org/Groups/KILT