Re: bringing ShEx and Shacl closer

Thanks Iovka for looking into this. I think everybody has to gain from a 
reconciliation of the two languages and, for that reason, I strongly 
support such efforts and I'm prepared to push for compromises in that 
direction.
--
Arnaud  Le Hors - Senior Technical Staff Member, Open Web Technologies - 
IBM Software Group


Iovka Boneva <iovka.boneva@univ-lille1.fr> wrote on 03/03/2016 09:15:29 
AM:

> From: Iovka Boneva <iovka.boneva@univ-lille1.fr>
> To: public-data-shapes-wg@w3.org
> Date: 03/03/2016 09:16 AM
> Subject: bringing ShEx and Shacl closer
> 
> Dear all,
> 
> I am currently studying what restrictions should be made to ShEx so that 

> it can be compiled to SHACL. My hope is to manage to bring the two 
> languages closer, or even make them converge. Such convergence however 
> might require some changes to SHACL.
> 
> The problem of repeated properties has been around for a while, and my 
> idea is to change the way we treat repeated properties in ShEx and adopt 

> something similar to qualified cardinalities in SHACL.
> 
> Another difference is the disjunction. Considering this concrete 
example:
> 
> "A person has either a foaf:name, or a foaf:givenName and a 
foaf:familyName"
> 
> This is easily written in ShEx, but not in SHACL. I however think that 
> it would not require a big change to SHACL to be able to easily handle 
> such use cases.
> 
> I hope to be able to make a concrete proposal of modified ShEx and SHACL 

> with the perspective of getting the two languages closer (there are 
> still some corner cases that I do not know how to deal with). Hopefully 
> it is possible to achieve this with modifications of the two languages 
> that are acceptable for the two communities.
> 
> 
> -- 
> Iovka Boneva
> Associate professor (MdC) Université de Lille
> http://www.cristal.univ-lille.fr/~boneva/
> +33 6 95 75 70 25
> 
>