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Re: URIs for properties at schema.org

From: Bernard Vatant <bernard.vatant@mondeca.com>
Date: Wed, 12 Oct 2011 09:45:02 +0200
Message-ID: <CAK4ZFVFNk+SR7j7V1SDeVpd54KCOGXN=F=ZAheUMDxGfAP3z+A@mail.gmail.com>
To: KANZAKI Masahide <mkanzaki@gmail.com>
Cc: Dan Brickley <danbri@danbri.org>, public-vocabs@w3.org
Thanks for the pointer to any23.org

An issue I clearly see with URIs such as http://schema.org/Person/name is
that some properties are used by more than one class. So we'll have for
example http://schema.org/Movie/duration and
http://schema.org/Event/duration potentially misleading to the idea that
they are different properties with specific domains, although the definition
found for "duration" is exactly the same at both http://schema.org/Movie and
http://schema.org/Event : "The duration of the item (movie, audio recording,
event, etc.) in ISO 8601 date format <http://en.wikipedia.org/wiki/ISO_8601>."
So it's another argument for having this definition clearly published at a
single place, under http://schema.org/duration - with expected range
http://www.schema.org/Duration. (which BTW would lead to the side issue of
having a property and its range just differing by one character case, not a
good practice in my opinion).


2011/10/12 KANZAKI Masahide <mkanzaki@gmail.com>

> Hi,
> Another interesting point is that any23.org generates RDF properties
> such as http://schema.org/Person/name instead of
> http://schema.org/name .
> This apparently conflicts with schemaorg.owl, but seems to be somewhat
> intuitive result from microdata spec "If the item is a typed item: a
> defined property name allowed in this situation according to the
> specification that defines the relevant type for the item".
> See any23 Issue 173 at
> http://code.google.com/p/any23/issues/detail?id=173 for some
> discussions. Also, G+ thread
> https://plus.google.com/115239936584020095918/posts/N2Wfiku19SS
> cheers,
> --
> @prefix : <http://www.kanzaki.com/ns/sig#> . <> :from [:name
> "KANZAKI Masahide"; :nick "masaka"; :email "mkanzaki@gmail.com"].

*Bernard Vatant
Vocabularies & Data Engineering
Tel :  + 33 (0)9 71 48 84 59
Skype : bernard.vatant


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Received on Wednesday, 12 October 2011 07:46:00 UTC

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