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Re: Some interesting things that show up when using a reasoner to classify schema.org

From: Martin Hepp <martin.hepp@unibw.de>
Date: Wed, 21 Jan 2015 17:21:08 +0100
Cc: Simon Spero <sesuncedu@gmail.com>, W3C Web Schemas Task Force <public-vocabs@w3.org>
Message-Id: <EF6D5945-1EA9-40BB-99B3-D6E5436E41F4@unibw.de>
To: Dan Brickley <danbri@google.com>
Hi Dan,
A hands-on solution would be to add two internal "annotation" properties "rangeHint" and "domainHint" that allow explicitly triggering the display of certain schema.org types in the documentation.


    <div typeof="rdf:Property" resource="http://schema.org/purpose">
...
      <span>Range: <a property="http://schema.org/rangeHint" href="http://schema.org/MedicalDevicePurpose">MedicalDevicePurpose</a></span>
      <span>Range: <a property="http://schema.org/rangeIncludes" href="http://schema.org/Thing">Thing</a></span>
    </div>


The documentation could then list the formal range (Thing) and popular types for the range (e.g. MedicalDevicePurpose)

This requires just ten lines in the RDFa and tweaking the Python code and Jinja templates that generate the documentation.

Martin

--------------------------------------------------------
martin hepp
e-business & web science research group
universitaet der bundeswehr muenchen

e-mail:  martin.hepp@unibw.de
phone:   +49-(0)89-6004-4217
fax:     +49-(0)89-6004-4620
www:     http://www.unibw.de/ebusiness/ (group)
         http://www.heppnetz.de/ (personal)
skype:   mfhepp 
twitter: mfhepp





On 19 Jan 2015, at 18:18, Dan Brickley <danbri@google.com> wrote:

> Hi Simon,
> 
> Thanks for these! I've opened Github issues for most of them, though I
> take your point that there are more out there.
> 
> On 18 January 2015 at 17:54, Simon Spero <sesuncedu@gmail.com> wrote:
>> 1:  The range of schema:purpose has no purpose.
>>     MedicalDevicePurpose OR Thing  = Thing
> 
> https://github.com/schemaorg/schemaorg/issues/233
> 
>> 2: The range for schema:trailer includes MovieGameSeries
> 
> https://github.com/schemaorg/schemaorg/issues/234
> 
>> 3: schema:musicBy has a much smaller domain than actor or director
> 
> https://github.com/schemaorg/schemaorg/issues/235
> 
>> 4: The range of foodEstablishment is  FoodEstablishment or Place;
>>  but: FoodEstablishment is a subclass of LocalBusiness
>>         LocalBusiness is a subclass of Place,
> 
> On this one I'm more sympathetic to Martin Hepp's point. Many local
> businesses have foody aspects to them but it isn't always feasible to
> make that explicit. However I'm wary of slipping into using
> rangeIncludes and domainIncludes assertions purely as a UI
> configuration language  for the Web site.
> 
>> Lots, lots more.
> 
> Feel free to fwd or bug-file the entire horror!
> 
> We have some very basic unit tests expressed in SPARQL -
> https://github.com/schemaorg/schemaorg/blob/master/tests/test_graphs.py#L97
> etc. which ought to catch more of these (e.g. mentions of types that
> don't have definitions should help avoid types). This currently
> requires Python RDFLib for the SPARQL tests, and I have had no success
> making SPARQL 1.1 property paths work as advertised, which I hoped
> might allow some basic matching against hierarchy.
> 
> cheers,
> 
> Dan
> 
>> + The number of children (and adults) for which a Lodging reservations can be made can be a floating point number.
> https://github.com/schemaorg/schemaorg/issues/232
> 
Received on Wednesday, 21 January 2015 16:21:44 UTC

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