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AW: Schema.org/CreativeWork: why "about" and "mentions" are Thing, but "keywords" isn't?

From: Michael Steidl \(IPTC\) <mdirector@iptc.org>
Date: Fri, 14 Jun 2013 11:04:17 +0200
To: 'Stéphane Corlosquet' <scorlosquet@gmail.com>, "'Chilly_Bang'" <chilly_bang@yahoo.de>
Cc: <public-vocabs@w3.org>
Message-ID: <001401ce68de$29383160$7ba89420$@iptc.org>
Hi Stephane, Chilly and all


The IPTC is working in the area of news (news agencies, newspapers,
broadcaster, online news), we have crated rNews (www.rnews.org
<http://www.rnews.org> ) and we are trying to replace the old Keyword by
about and mentions. The major reason is: keyword does not establish a clear
and unambiguous relationship between the subject and the object in the RDF
triple, while about and mentions do this. In many cases the Keyword is a
kind of grab bag for all things with an unclear relationship to the subject
– and that’s not of help for adding useful metadata. We are in favour of
keeping the Keyword as a string.





Michael Steidl

Managing Director of the IPTC [mdirector@iptc.org]

International Press Telecommunications Council 
Web:  <http://www.iptc.org/> www.iptc.org - on Twitter
<http://www.twitter.com/IPTC> @IPTC

Business office address: 

25 Southampton Buildings, London WC2A 1AL, United Kingdom

Registered in England, company no 101096




Von: Stéphane Corlosquet [mailto:scorlosquet@gmail.com] 
Gesendet: Freitag, 14. Juni 2013 04:13
An: Chilly_Bang
Cc: public-vocabs@w3.org
Betreff: Re: Schema.org/CreativeWork: why "about" and "mentions" are Thing,
but "keywords" isn't?



On Wed, Jun 12, 2013 at 9:40 AM, Chilly_Bang < <mailto:chilly_bang@yahoo.de>
chilly_bang@yahoo.de> wrote:

Hello to all!

Why are properties "about" and "mentions" allowed to be a Thing, but
"keywords" only a text?


Thanks for raising this point, I was going to ask the same question. Many
systems natively exposes keywords / tags as entities. In the case of Drupal
for example, each keyword has a page which lists all the content on the site
tagged with that same keyword. See example [1] showing all content tagged
with the "non-profit" keyword.


The current description of keywords reads "The keywords/tags used to
describe this content.". To me it feels like we're encouraging authors to
put all keywords into one single plain text value. How are the keywords
separated? comma, space, tab? Each keyword is text, no way to identify each
with a URI. As pointed out by evgeniy, a lot of other properties of
<http://schema.org> schema.org are allowed to be a Thing, Person,


Could we update the range (expected type) of 'keywords' to be 'Thing'? Could
we make 'keywords' singular, and also update its description to "A keyword
or tag used to describe this content.". I've added this proposal to the list
of pending singularity proposals [2].




[1]  <http://buytaert.net/tag/non-profit> http://buytaert.net/tag/non-profit

Received on Friday, 14 June 2013 09:04:40 UTC

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