Re: Definition of Shape

On 1/23/15 10:34 PM, Jose Emilio Labra Gayo wrote:
> On Fri, Jan 23, 2015 at 8:30 PM, Peter F. Patel-Schneider
> <pfpschneider@gmail.com <mailto:pfpschneider@gmail.com>> wrote:
>
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>     The glossary already contains a stab as this:
>     https://www.w3.org/2014/data-shapes/wiki/Glossary#Unscoped_Constraint.2FShape
>
>
> Yes, but I think we should have a simple definition of what a Shape is
> and I think this definition could be it.

+1 for simple definition

  I also think that in the
> context of this group we can differentiate between a constraint and a
> shape, saying that a shape is a set of constraints on some RDF node.

Does the shape constrain? or does it define? In the Dublin Core work the 
"shape" was called a "description" -- it describes the graph and the 
desired rules for the graph. Whether one uses those rules to constrain, 
or to inform, or to reject, or to simply shake one's head in dismay is a 
matter for the application that applies the rules. "Shape expressions" 
is very close to this meaning, and is looked on favorably within the DC 
community.

kc


>
> Apart from that, we can maintain the definitions of "constraint",
> "scoped constraint" and "unscoped constraint" which I also think they
> make sense.
>
> Best regards, Jose Labra
>
>     peter
>
>
>     On 01/23/2015 10:10 AM, Jose Emilio Labra Gayo wrote:
>      > I edited the Glossary page to add a possible definition of shape as:
>      >
>      > "A Shape is a set of constraints over the properties and objects
>     of an
>      > RDF node"
>      >
>      > I think it is in accordance with the use of the term in the WG
>     and does
>      > not enter in conflict with other terms.
>      >
>      > -- Saludos, Labra
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>
> --
> Saludos, Labra

-- 
Karen Coyle
kcoyle@kcoyle.net http://kcoyle.net
m: 1-510-435-8234
skype: kcoylenet/+1-510-984-3600

Received on Saturday, 24 January 2015 16:08:43 UTC