Re: SPIN prospects

Hi Holger

Very interesting discussion.

I am interested in current adoption of SPIN in linked data
vocabularies/ontologies you would be aware of. Looking at the 300+
vocabularies we have gathered so far in the LOV dataset, I have not met
unless I missed something any use of SPIN rules in any of them. There are a
few other vocabularies (quite confidential ones, actually) relying on SPIN
[1], but that's it. Any pointer welcome.

Bernard

[1] http://lov.okfn.org/dataset/lov/details/vocabulary_spin.html

2013/1/31 Holger Knublauch <holger@knublauch.com>

> My guess whether people want to use SPIN or not depends on their
> background. Clearly for many programmers it is better to take full control
> without having another execution engine in the middle. Also the complexity
> of the RDF syntax (which basically required the use of a tool) was a show
> stopper for some. The latter problem has been addressed though, see my
> email announcing the Turtle-friendly simplified SPIN syntax [1].
>
> However, not everyone is a programmer. SPIN addresses a different problem
> than executing a bunch of SPARQL queries. It provides a vocabulary for
> modeling and sharing the meaning and behavior of semantic web resources.
> SPIN definitions can be published as linked data, just like people share
> OWL restrictions to clarify the meaning of OWL classes.
>
> One benefit of using SPIN is that it defines standard properties and URIs
> that can limit the proliferation of ad-hoc mechanisms that would otherwise
> appear. Properties such as spin:rule and spin:constraint clarify the role
> of a SPARQL query within a model. Furthermore, the attachment of those
> rules and constraints to classes can create much more maintainable query
> libraries than plain lists of CONSTRUCTs. (As a side-bar, David: SPIN rules
> can also be INSERT/DELETE commands). This object-oriented attachment also
> allows execution engines to select which constraints and rules need to be
> executed for a given context resource.
>
> Another key feature of SPIN is the ability to define and share new SPARQL
> functions without programming them in Java [5]. Furthermore, SPIN provides
> a simple yet powerful template mechanism that allows anyone to make up
> their own domain-specific modeling language, even including visual
> notations like SPINMap [6].
>
> FWIW I have received confirmation from Kingsley that OpenLink Software is
> adding some form of SPIN support to their products. AllegroGraph already
> supports defining SPIN functions natively, similar to stored procedures.
> Needless to say, TopQuadrant has a whole technology stack built on top of
> SPIN [2], and some of this is available via free tools [3] or open source
> APIs [4]. I hope with the recent generalization of the SPIN syntax, more
> companies will adopt it.
>
> And yes, a full W3C process beyond the Member Submission is still a
> possibility. If only those processes were not so time consuming! Meanwhile
> I believe the market will decide, and SPIN is already a de-facto standard
> in certain areas.
>
> Regards,
> Holger
>
> [1] http://lists.w3.org/Archives/**Public/semantic-web/2013Jan/**0147.html<http://lists.w3.org/Archives/Public/semantic-web/2013Jan/0147.html>
> [2] http://composing-the-semantic-**web.blogspot.com/2010/04/spin-**
> technology-stack.html<http://composing-the-semantic-web.blogspot.com/2010/04/spin-technology-stack.html>
> [3] http://www.topquadrant.com/**products/TB_Composer.html<http://www.topquadrant.com/products/TB_Composer.html>
> [4] http://topbraid.org/spin/api/
> [5] http://composing-the-semantic-**web.blogspot.com/2009/01/**
> understanding-spin-functions.**html<http://composing-the-semantic-web.blogspot.com/2009/01/understanding-spin-functions.html>
> [6] http://composing-the-semantic-**web.blogspot.com/2011/04/**
> spinmap-sparql-based-ontology-**mapping.html<http://composing-the-semantic-web.blogspot.com/2011/04/spinmap-sparql-based-ontology-mapping.html>
>
>


-- 
*Bernard Vatant
*
Vocabularies & Data Engineering
Tel :  + 33 (0)9 71 48 84 59
 Skype : bernard.vatant
Blog : the wheel and the hub <http://blog.hubjects.com/>
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