W3C home > Mailing lists > Public > public-vocabs@w3.org > June 2012

Re: additionalType property, vs extending Microdata syntax for multiple types

From: Martin Hepp <martin.hepp@ebusiness-unibw.org>
Date: Mon, 18 Jun 2012 23:04:13 +0200
Cc: "public-vocabs@w3.org Vocabs" <public-vocabs@w3.org>, Egor Antonov <elderos@yandex-team.ru>, Guha Guha <guha@google.com>, Peter Mika <pmika@yahoo-inc.com>, Ivan Herman <ivan@w3.org>, Jeni Tennison <jeni@jenitennison.com>
Message-Id: <2B0E841F-5BBB-487B-81F7-67AEAE82BAE6@ebusiness-unibw.org>
To: Dan Brickley <danbri@danbri.org>
Hi Dan,

>> 7. The proposal can be easily handled in an RDF environment for consuming respective data.
> I'm with you until here...
Thanks ;-)

>> 8. Developers may use a broader range of lexical forms for identifiers of secondary types, e.g. Wikipedia URIs instead of www.productontology.org IDs, prefixed identifiers ("unspsc:11001123"),private URN schemes etc., which means we may need additional cleansing before translating respective markup into additional rdf:type statements.
> Not sure I buy this bit. Well, in general schema.org tolerates mess in
> lots of places, but I don't see a particular need to invite it here...
> Private URN schemes can still be legitimate URIs/IRIs here, and
> someone could make a unspsc scheme....

I did not want to "invite mess" in here, but I expect the data quality to be worse for secondary types then for the primary itemtype, simply because the space of choices will be bigger by orders of magnitude. Of course, it would be better if they all used http://www.productontology.org URIs ;-)

So I actually think we are also in agreement regarding #8 ;-)


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

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Received on Monday, 18 June 2012 21:04:43 UTC

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