Re: VRA RDF Ontology

Thanks for the comments. The issue of OWL reasoning has been brought up in
a few other conversations. Simon's analysis is correct. This issue of
reasoning and its implications has lead to an idea to simply strip out most
of the OWL components and follow the Schema.org model, using just RDFS and
RDF in the ontology. OWL is very particular and to me at least the
connection to Schema.org in the ontology outweighs any reasoning problems.
This leads me to the assumption that we should just strip out the OWL terms
that would allow for reasoning in the first place.

The other concern is what is the likelihood that anyone would actually use
the reasoning? Not sure but if the concerns around reasoning oddities it a
major hangup, then we can just strip them out.

I went ahead and made a GitHub issue about getting better human readable
labels integrated into the ontology.

Here is the link to the GitHub Issues page if you or others want to keep up
on the conversation or add other issues:
https://github.com/mixterj/VRA-RDF-Project/issues

Jeff

On Wed, Oct 14, 2015 at 12:32 PM, Karen Coyle <kcoyle@kcoyle.net> wrote:

> I note that you make equivalencies between VRA classes and properties to
> schema.org classes and properties. To some extent that makes good sense,
> connecting up to a highly-used vocabulary. But at the same time,
> schema.org is known for being a bit quirky in its interpretation of RDF,
> which could have an effect on your semantics. I also don't know what the
> implications are when you make equivalencies between, for example,
> vra:Continent and schema:Continent since they are subclassed differently:
>
> schema:Continent
>   owl:Thing > schema:Thing > schema:Place > schema:Landform >
> schema:Continent
>
> vra:Continent
>   owl:Thing > vra:Place > vra:Continent
>
> It's quite possible that in the end these differences don't matter, but
> I'm curious as to your thinking about them.
>
> Also, it would be great to have human-readable definitions for the terms.
> For example, schema:landform is defined as "A landform or physical feature.
> Landform elements include mountains, plains, lakes, rivers, seascape and
> oceanic waterbody interface features such as bays, peninsulas, seas and so
> forth, including sub-aqueous terrain features such as submersed mountain
> ranges, volcanoes, and the great ocean basins." and schema:place is
> "Entities that have a somewhat fixed, physical extension." (Note that
> "somewhat" ;-))
>
> Thanks,
> kc
>
>
>
> On 10/13/15 2:15 PM, Jeff Mixter wrote:
>
>>
>>       VRA Core RDF Ontology Available for Review____
>>
>> October 7, 2015
>> <
>> https://urldefense.proofpoint.com/v2/url?u=http-3A__vraweb.org_vra-2Dcore-2Drdf-2Dontology-2Davailable-2Dfor-2Dreview_&d=BQMFaQ&c=JL-fUnQvtjNLb7dA39cQUcqmjBVITE8MbOdX7Lx6ge8&r=fa9R0Li9Dg4jcJRFMbtqw7fgKP67tmzu4icBDL4K_N0&m=79ZhZQczvgC_-fopKkJzHmD3tYjsN2zGH76bTEwnX54&s=Udr9vKPqe48WaRjutDL1dFSqMKDbxZzvVdPhAkWleto&e=
>> >
>> VRA Core
>> <
>> https://urldefense.proofpoint.com/v2/url?u=http-3A__vraweb.org_author_vra-2Dcore_&d=BQMFaQ&c=JL-fUnQvtjNLb7dA39cQUcqmjBVITE8MbOdX7Lx6ge8&r=fa9R0Li9Dg4jcJRFMbtqw7fgKP67tmzu4icBDL4K_N0&m=79ZhZQczvgC_-fopKkJzHmD3tYjsN2zGH76bTEwnX54&s=yfIJaXCo8M8czit4gXyNJsDmBpZdptk8XCpx52mVU5Y&e=
>> >____
>>
>> A taskforce setup through the VRA Core Oversight Committee (Core OC)
>> <
>> https://urldefense.proofpoint.com/v2/url?u=http-3A__vraweb.org_about_committees_vra-2Dcore-2Doversight_&d=BQMFaQ&c=JL-fUnQvtjNLb7dA39cQUcqmjBVITE8MbOdX7Lx6ge8&r=fa9R0Li9Dg4jcJRFMbtqw7fgKP67tmzu4icBDL4K_N0&m=79ZhZQczvgC_-fopKkJzHmD3tYjsN2zGH76bTEwnX54&s=5AwUn8N8PjVio2TH6nTO_MqWWkor2_BD1ETgrdcPD6Y&e=>
>> has
>> released an initial draft of a VRA Core RDF Ontology. The RDF Ontology
>> is based on the Core 4.0 XML Schema and is available along with an XLST
>> stylesheet that will convert VRA Core 4.0 compliant XML in RDF.
>> Representing a VRA Core description in RDF allows for exposing rich VRA
>> Core metadata as Linked Data, so that the descriptions may be widely
>> shared and interact with other Linked Data resources on the Web, such as
>> the ongoing project to release the Getty Vocabularies as linked open
>> data
>> <
>> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.getty.edu_research_tools_vocabularies_lod_&d=BQMFaQ&c=JL-fUnQvtjNLb7dA39cQUcqmjBVITE8MbOdX7Lx6ge8&r=fa9R0Li9Dg4jcJRFMbtqw7fgKP67tmzu4icBDL4K_N0&m=79ZhZQczvgC_-fopKkJzHmD3tYjsN2zGH76bTEwnX54&s=23IWID4UMyeJIMMVpKLaRVpf7FkNakOUqeovZyA_hxg&e=
>> >.
>> Together, these tools will allow museums, libraries and archives to
>> increase exposure of their content online, allowing people to more
>> easily find relevant images of cultural heritage objects, sites, and
>> subjects.____
>>
>> __ __
>>
>> The Ontology, XSLT conversion stylesheet as well as example records can
>> be found on GitHub at the following link
>> https://github.com/mixterj/VRA-RDF-Project
>> <
>> https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_mixterj_VRA-2DRDF-2DProject&d=BQMFaQ&c=JL-fUnQvtjNLb7dA39cQUcqmjBVITE8MbOdX7Lx6ge8&r=fa9R0Li9Dg4jcJRFMbtqw7fgKP67tmzu4icBDL4K_N0&m=79ZhZQczvgC_-fopKkJzHmD3tYjsN2zGH76bTEwnX54&s=mwzbWMJRSPaDMfLA79rCUBN412HTCLPvTTjN7KyEDUg&e=
>> >).
>> The Ontology can be viewed herehttp://purl.org/vra/
>> <
>> https://urldefense.proofpoint.com/v2/url?u=http-3A__purl.org_vra_&d=BQMFaQ&c=JL-fUnQvtjNLb7dA39cQUcqmjBVITE8MbOdX7Lx6ge8&r=fa9R0Li9Dg4jcJRFMbtqw7fgKP67tmzu4icBDL4K_N0&m=79ZhZQczvgC_-fopKkJzHmD3tYjsN2zGH76bTEwnX54&s=Ds_3WMbZ8vkBqtqW2hQTbpSYKI4jJZERi7xNHeP8e1k&e=
>> >.____
>>
>> Comments and questions are welcomed. Please feel free to submit them
>> over the VRA Core listserv, which you can join at this link
>> http://listserv.loc.gov/listarch/vracore.html
>> <
>> https://urldefense.proofpoint.com/v2/url?u=http-3A__listserv.loc.gov_listarch_vracore.html&d=BQMFaQ&c=JL-fUnQvtjNLb7dA39cQUcqmjBVITE8MbOdX7Lx6ge8&r=fa9R0Li9Dg4jcJRFMbtqw7fgKP67tmzu4icBDL4K_N0&m=79ZhZQczvgC_-fopKkJzHmD3tYjsN2zGH76bTEwnX54&s=ShzNUMpHlICOLC9P9cFEIOA-LM8xhpnVty-2WmKFGzU&e=
>> >,
>> on the GitHub repo page or email them directly to Jeff Mixter
>> (mixterj@oclc.org <mailto:mixterj@oclc.org>).____
>>
>> __ __
>>
>> *Taskforce members:*
>> Jeff Mixter, Software Engineer, OCLC
>> Rebecca Guenther, Metadata Specialist at Rebecca Guenther Consulting
>> Trish Rose-Sandler, Data Analyst, Center for Biodiversity Informatics,
>> Missouri Botanical Garden
>> Michael Dulock, Metadata Librarian, University of Colorado Boulder
>> Libraries
>> Esme Cowles, Software Engineer, UC San Diego Libraries
>>
>>
>> --
>> Jeff Mixter
>> jeffmixter@gmail.com <mailto:jeffmixter@gmail.com>
>> 440-773-9079
>>
>
> --
> Karen Coyle
> kcoyle@kcoyle.net http://kcoyle.net
> m: 1-510-435-8234
> skype: kcoylenet/+1-510-984-3600
>
>


-- 
Jeff Mixter
jeffmixter@gmail.com
440-773-9079