Re: Schema.org and OWL

Richard

Watch out for uppercase/lowercase :

<owl:class> must be <owl:Class>
<owl:unionof> must be <owl:unionOf>
<owl:objectproperty> must be <owl:ObjectProperty>
<owl:datatypeProperty> must be <owl:datatypeProperty> (only 2 of them ?
exchangeRate and interactionCount - strange)
namedindividual must be NamedIndividual
rdf:description must be rdf:Description
"rdf:Description rdf:resource=" must be "rdf:Description rdf:about="


Why is "http://schema.org/DataType" subclassOf rdfs:Class ? It seems it
should be somehow connected to schema:Boolean, etc, but it is not.

<rdfs:subPropertyOf rdf:resource="rdfs:label"/> : you can't use a QNAME
here, it must be the full URI of rdfs:label

additionalType subPropertyOf rdf:type : looks surprising to me;


<owl:ObjectProperty rdf:about="http://schema.org/repeatFrequency">
        <rdfs:subPropertyOf rdf:resource="
http://health-lifesci.schema.org/frequency"/> : SDO really have a property
from the core defined as a subproperty from a property in an extension ?!




2018-06-06 14:05 GMT+02:00 Richard Wallis <richard.wallis@dataliberate.com>:

> Calling folks with more OWL experience than me!
>
> The schema.org site has an OWL definition file that has not been
> maintained since April 2014: http://schema.org/docs/schemaorg.owl. Also
> the structure and syntax of the file needs some attention.
>
> To help with the occasional questions about accessing processable
> representations of the vocabulary; to attempt to close an issue (#1611
> <https://github.com/schemaorg/schemaorg/issues/1611>); and to help with a
> personal project, I have had a look at producing an up to date, improved,
> maintainable version of the file.
>
> My first attempt can be downloaded/viewed here: https://s3.amazonaws.
> com/rjwPublicData/public/schemaorg.owl
>
> I am looking for comments, suggestions, and help around a few aspects of
> this work in progress:
>
>    - Is it generally ‘a good owl file’
>
>    - Should it contain more/less info about the vocabulary and its terms
>
>    - Specifically with reference to domainIncludes and rangeInclude -
>    mapped to rdfs:domain & rdfs:range with owl:unionOf collections:
>
>    - Is this the best/only way to represent multiple domain & ranges for
>       an objectproperty?
>
> The only I know of, I would love to know alternatives.

>
>    -
>       - Have I got the syntax correct?
>
>       - Several people use Protégé <https://protege.stanford.edu/> as a
>    tool for this kind of effort - I am trying to identify what syntax, will
>    enable this tool to recognise the multiple domain/ranges when importing
>    this file.
>
>
I can confirm that, after fixing the lowercase/uppercase error, the file
can be opened in Protégé, with class Unions properly displayed.





Best
Thomas



> If anyone out there with more OWL experience than me (not difficult),
> could spend a few minutes taking a look at this and commenting, it would be
> greatly appreciated.
>
> ~Richard
>
> Richard Wallis
> Founder, Data Liberate
> http://dataliberate.com
> Linkedin: http://www.linkedin.com/in/richardwallis
> Twitter: @rjw
>



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