FW: SHACL (RDF Shapes) coming up for Candidate Recommendation

From: Dave McComb
Sent: Sunday, March 05, 2017 11:13 AM
To: 'Dean Allemang'
Subject: RE: SHACL (RDF Shapes) coming up for Candidate Recommendation

A slightly deeper problem:

If I try to make a shape (in Protégé) the editor expects the target of sh:targetClass to be an individual (even though the definition has range rdfs:Class)

If I make the change in an exported ttl file, and then reimport it to Protégé, it infers that sh:targetClass is an annotation.

I would recommend making all the properties that attach to Classes and Properties be annotation properties.

This is what we are doing.  At the moment we are just starting on a prototype, inspired by SHACL, but I can’t import SHACL because of issues like this.



From: deanallemang@gmail.com<mailto:deanallemang@gmail.com> [mailto:deanallemang@gmail.com] On Behalf Of Dean Allemang
Sent: Sunday, March 05, 2017 10:23 AM
To: Pete Rivett; Elisa Kendall; Cory Casanave; Michael Uschold; Dave McComb; Phil Ashworth; Elvio Sadun; Scuffell Derek GBJH; Peter Lawrence; Sidney Bailin; Rick Spates; Juan Sequeda; Terence R Smith; Wei-yeh Lee; Gregor Wobbe; Terry Roach; jans; John Snelson; Andreas Blumauer; Shaun Rolls; Max Gillmore; Jeff Stein; Jeff Braswell; Kurt Cagle; Andrea Splendiani; Bera, Sunanda
Subject: SHACL (RDF Shapes) coming up for Candidate Recommendation

The RDF Shapes Working Group has finished a draft of SHACL, the RDF constraints language.  For a number of reasons, the committee has come very near its deadline for submission for Candidate Recommendation (that's the required step before Recommendation) so the final review is a bit rushed; the deadline for comments is March 17.  All the details are available at the SHACL proposal page:

http://w3c.github.io/data-shapes/shacl/



Many people I have spoken to (and even read) seem to be under the impression that SHACL is a sure thing; that some decent recommendation is going to come out of this in due course.  This is not necessarily the case; in fact, the W3C needs to see strong evidence of interest in SHACL for it to go forward.  Therefore, I strongly encourage you to make comments (including your affiliation if you can), even if you think your comment is obvious or trivial.  It is often things that seem "obvious" to someone that reveals the real depth of an important use case.  This is especially important if you have been standing on the sidelines so far, and have not made any comments on earlier drafts.

The March 17 deadline might be extended if there are substantive comments that will require further work, but for now, that is it.  Please take some time to look it over and make a comment.  The instructions for comments are in the draft.

If you can think of any other colleagues who should see this announcement, please feel free to forward this to them.



Thanks,


Dean