Re: VRA RDF Ontology

>From the specifications we know that

vra:Continent is defined to be co-extensive with schema:Continent.
vra:Place is defined to be co-extensive with schema:Place.
schema:Continent is a sub-class of schema:Place.
vra:Continent is a sub-class of vra:Place.

Thus, every instance of vra:Continent is an instance of schema:LandForm.

Simon



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
>
>