W3C home > Mailing lists > Public > public-bioschemas@w3.org > December 2017

Re: ShEX vs JSON schema

From: Petr Holub <petr.holub@bbmri-eric.eu>
Date: Wed, 13 Dec 2017 19:28:34 +0000
To: Franck Michel <franck.michel@cnrs.fr>, "public-bioschemas@w3.org" <public-bioschemas@w3.org>, "A.J.G.Gray@hw.ac.uk" <A.J.G.Gray@hw.ac.uk>
Message-ID: <VI1PR07MB3376CB20B6717D9775B52810C3350@VI1PR07MB3376.eurprd07.prod.outlook.com>
Dear all,


out of curiosity (not being specialist in this) - does not ShEx have also W3C endorsement? It seems to be hosted at W3C (https://www.w3.org/2001/sw/wiki/ShEx) and even its Primer is published uner W3C Community Group (http://shex.io/shex-primer/).


Cheers,

Petr



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________________________________
From: Franck Michel <franck.michel@cnrs.fr>
Sent: Wednesday, December 13, 2017 16:51
To: public-bioschemas@w3.org
Subject: Re: ShEX vs JSON schema

Dear all,

I agree that ShEx or SHACL are preferable to JSON schema: JSON schema obviously applies only to JSON, whereas we would rather have a mechanism that applies to RDF in general, whatever the serialization syntax.

As to the choice between ShEx and SHACL, I must admit I'm puzzled. Does any of you have a pointer to a comparison, their respective B's and C's, application fields etc.? A quick lookup did not bring much, and at this point I just feel like they are competitors. I assume/hope there is more than that.

Regards,
   Franck.

Le 13/12/2017 à 11:00, Gray, Alasdair J G a écrit :
Dear All,

Leyla, thanks for kicking of this conversation on the list. It is something that I have discussed with several people in face-to-face conversations.
On 12 Dec 2017, at 17:41, Leyla Garcia <ljgarcia@ebi.ac.uk<mailto:ljgarcia@ebi.ac.uk>> wrote:

Any thoughts on using ShEX [1] or SHACL [2] rather than JSON schema [3] for validation purposes?

ShEx and SHACL are both more expressive than JSON schema, and better capture the validation needs of the Bioschemas profiles. In particular, they allow for the capture of relationships between entities and also restrictions on the vocabulary terms used.

Between ShEx and SHACL it is a closer run thing and we are doing some experimentation with both. ShEx has a more concise notation than SHACL and I understand that it has more expressive power. However, the SHACL libraries and documentation are more professionally put together and of course it has the endorsement of the W3C working group.

There will be an ELIXIR implementation study in 2018 that has a focus on validation so hopefully some of these issues can be investigated in that.

Best regards

Alasdair

Alasdair J G Gray
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Assistant Professor in Computer Science,
School of Mathematical and Computer Sciences
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Heriot-Watt University, Edinburgh UK.

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