When making a modelling guide for starting modellers I don’t want to
bother them with many options and under the hood issues, pref. just
the one best practice so with or without # in imports.
thx
Dr. ir. H.M. (Michel) Böhms
Senior Data Scientist
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*From:*topbraid-users@googlegroups.com
<topbraid-users@googlegroups.com> *On Behalf Of *Holger Knublauch
*Sent:* vrijdag 18 januari 2019 01:08
*To:* topbraid-users@googlegroups.com
*Subject:* Re: [topbraid-users] shacl import?
On 18/01/2019 7:15 am, Rob Atkinson wrote:
its an area where URIs are not "opaque" - because when
dereferencing a server never sees the # or trailing fragments
after that.
If you use a # in your URI you are saying that architecturally a
client must always load the entire namespace when referencing a
single term - which is appropriate for models but not instance
data usually. clients need the ability to choose how many
instances they are dealing with, and some other mechanism should
be provided to access lists of instances.
Arguably TBC should fully simulate HTTP dereferencing - and be
willing to match with or without trailing # ?
TopBraid will have no problems resolving either with or without # from
the web, but if you have owl:imports in an RDF model then the
interpretation should IMHO be that it refers to the URI (usually an
owl:Ontology) in that location to resolve further recursive
owl:imports. In other words, if you have a union graph with all
sub-graphs, you can use the SPARQL path owl:imports* to find all
imported sub-graphs. That's also how SHACL interprets them. Just
pretending they are the same is creating complications wherever such
references (in the RDF model) are followed, e.g. you'd need to make
SPARQL queries look for either case too. For this reason, the mapping
of URIs to local files only accepts exact matches.
Holger
On Thu, 17 Jan 2019 at 19:38, Holger Knublauch
<hol...@topquadrant.com <mailto:hol...@topquadrant.com>> wrote:
Using # or not does/can impact how further owl:imports are
understood. So if shacl# had an owl:import and you just import
without the # then the owl:import would not be picked up
because it's a different owl:Ontology.
This is one of these never-ending topics where the semantic
web stack is unfortunately too complex and almost everybody
gets this wrong.
Holger
On 17/01/2019 6:32 pm, 'Bohms, H.M. (Michel)' via TopBraid
Suite Users wrote:
Ok
Is there any special reason why the ‘importing with #’is
different from usual (without #, # only in prefix)?
Dr. ir. H.M. (Michel) Böhms
Senior Data Scientist
T +31888663107
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E michel.bo...@tno.nl <mailto:michel.bo...@tno.nl>
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*From:*topbraid-users@googlegroups.com
<mailto:topbraid-users@googlegroups.com>
<topbraid-users@googlegroups.com>
<mailto:topbraid-users@googlegroups.com> *On Behalf Of
*Holger Knublauch
*Sent:* donderdag 17 januari 2019 09:30
*To:* topbraid-users@googlegroups.com
<mailto:topbraid-users@googlegroups.com>
*Subject:* Re: [topbraid-users] shacl import?
Only importing will add the triples from that namespace.
Simply using the URIs does not.
Holger
Sent from my iPad
On 17 Jan 2019, at 18:26, 'Bohms, H.M. (Michel)' via
TopBraid Suite Users <topbraid-users@googlegroups.com
<mailto:topbraid-users@googlegroups.com>> wrote:
Ok
But when it is deref. that way…why still need to
import it (at all)?
Dr. ir. H.M. (Michel) Böhms
Senior Data Scientist
T +31888663107
M +31630381220
E michel.bo...@tno.nl <mailto:michel.bo...@tno.nl>
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*From:*topbraid-users@googlegroups.com
<mailto:topbraid-users@googlegroups.com>
<topbraid-users@googlegroups.com
<mailto:topbraid-users@googlegroups.com>> *On Behalf
Of *Holger Knublauch
*Sent:* donderdag 17 januari 2019 00:05
*To:* topbraid-users@googlegroups.com
<mailto:topbraid-users@googlegroups.com>
*Subject:* Re: [topbraid-users] shacl import?
The correct URI to import is
http://www.w3.org/ns/shacl#
<http://www.w3.org/ns/shacl> (including the #) and
this should be dereferenceable. In TopBraid, this will
redirect to the local copy in the
TopBraid/SHACL/shacl.ttl file.
Holger
On 16/01/2019 10:34 pm, 'Bohms, H.M. (Michel)' via
TopBraid Suite Users wrote:
Can someone help me remember:
Do I need
<https://w3id.org/example1>
<https://w3id.org/example1>
rdf:type owl:Ontology ;
owl:imports dct: ;
owl:imports
<http://www.w3.org/2004/02/skos/core>
<http://www.w3.org/2004/02/skos/core> ;
owl:imports <http://www.w3.org/ns/shacl>
<http://www.w3.org/ns/shacl> .
or is it dereferenceable
thx a lot, Michel
Dr. ir. H.M. (Michel) Böhms
Senior Data Scientist
T +31888663107
M +31630381220
E michel.bo...@tno.nl <mailto:michel.bo...@tno.nl>
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