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

Re: best practice RDF in HTML

From: Gannon Dick <gannon_dick@yahoo.com>
Date: Tue, 12 Jun 2012 09:14:02 -0700 (PDT)
Message-ID: <1339517642.56563.YahooMailNeo@web112614.mail.gq1.yahoo.com>
To: Sebastian Hellmann <hellmann@informatik.uni-leipzig.de>, John Erickson <olyerickson@gmail.com>
Cc: public-lod <public-lod@w3.org>, semantic-web <semantic-web@w3.org>
http://www.rustprivacy.org/compound_docs.zip
has some syntactically correct code.  Zotero <http://www.zotero.org/> outputs RDF, with some non-standard modifications (last I looked).
Overall, some component has to look a little like magic and meta data should not be it (my personal preference).



________________________________
 From: Sebastian Hellmann <hellmann@informatik.uni-leipzig.de>
To: John Erickson <olyerickson@gmail.com> 
Cc: public-lod <public-lod@w3.org>; semantic-web <semantic-web@w3.org> 
Sent: Tuesday, June 12, 2012 10:41 AM
Subject: Re: best practice RDF in HTML
 
Dear John,
I am not quite sure I understand your intention.
Am I supposed to embed a Microdata "island", which I then convert to RDF 
via the JSON intermediate?
There is no official JSON  format, so embedding JSON would still be kind 
of a work around.

It would be perfect, if there was a more direct solution. Including the 
RDF "island" as Turtle/N3 in the <script> part seems to be legit 
(Although a little bit unconventional).

Is it possible to make an RDFa "island" somewhere? Where would I dump 
that? Within the <head> or <body>? or parallel?
All the best,
Sebastian


On 06/12/2012 05:19 PM, John Erickson wrote:
> If I understand correctly, the problem is to embed an RDF "island" in
> an HTML document, to be managed by a (presumably RDF clueless) CMS.
>
> How about following the approach described in the W3C "Microdata to
> RDF: Transformation from HTML+Microdata to RDF" working draft
> <http://www.w3.org/TR/2012/WD-microdata-rdf-20120112/>
>
> There are a number of examples in that draft which seem compatible
> with the problem statement, including embedded JSON (that can be
> easily extracted and consumed as RDF)
>
> On Tue, Jun 12, 2012 at 11:12 AM, Gannon Dick<gannon_dick@yahoo.com>  wrote:
>> Hello Sebastian,
>>
>> You are making me nostalgic for a dispute I lost by shout-down with with the
>> developers of RDFa :o)
>>
>> Oops.  Mr Erickson just beat me to the punch ... the critical point is that
>> HTML has two bowls of tag soup (HEAD, BODY) related by proximity not by
>> authority.  It's easy to assume that the HEAD is "global" to the BODY or
>> vice-versa.  What you really want to do is cite a bibliographic reference to
>> a set of RDF triples.
>>
>> You can link to that file, or if you want to get fancy, embed an XML
>> Bibliographic Reference format like MODS from the LoC[1].  Embedding in the
>> BODY is more polite, and reassuring if questions arise about download size.
>>
>> --Gannon
>>
>> [1] Sorry, I have not looked at this in years so there will be some syntax
>> issues.  The idea is simple, MathML for people who do math, MODS for people
>> who keep track of written stuff.
>> http://www.rustprivacy.org/FunForLibrarians.pdf
>>
>>
>> ________________________________
>> From: John Erickson<olyerickson@gmail.com>
>> To: Sebastian Hellmann<hellmann@informatik.uni-leipzig.de>
>> Cc: public-lod<public-lod@w3.org>; semantic-web<semantic-web@w3.org>
>> Sent: Tuesday, June 12, 2012 9:32 AM
>> Subject: Re: best practice RDF in HTML
>>
>> Sebastian, is the requirement that the RDF not be *integrated* with
>> the content of the page --- in other words, you just want to embed a
>> "dump" of some RDF?
>>
>> Why not link to a RDF or TTL file?
>>
>> On Tue, Jun 12, 2012 at 10:02 AM, Sebastian Hellmann
>> <hellmann@informatik.uni-leipzig.de>  wrote:
>>> Dear list,
>>> What are the best practice to include a set of RDF triples in HTML.
>>> *Please note*: I am not looking for the RDFa way to include triples. I
>>> just
>>> want to add a set of triples somewhere in an HTML document. They are not
>>> supposed to show up like "Wikinomics", "Don Tapscott" in  the following
>>> example:
>>>
>>> <div  xmlns:dc="http://purl.org/dc/elements/1.1/"
>>>   about="http://www.example.com/books/wikinomics">
>>>   <span  property="dc:title">Wikinomics</span>
>>>   <span  property="dc:creator">Don Tapscott</span>
>>>   <span  property="dc:date">2006-10-01</span>
>>> </div>
>>>
>>> I don't want to use the strings in the HTML document as objects in the
>>> triples. My use case is that I just have a large set of triples, e.g. 1000
>>> that I want to include as a bulk somewhere and ship along with the html.
>>> Which way is the best? Do the examples below work?
>>> All the best,
>>> Sebastian
>>>
>>> *******************************************
>>> Include in head
>>> ******************************************
>>> <html>
>>> <head>
>>> <script type="application/rdf+xml">
>>> <rdf:RDF
>>> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
>>> xmlns:cd="http://www.recshop.fake/cd#">
>>>
>>> <rdf:Description
>>> rdf:about="http://www.recshop.fake/cd/Empire Burlesque">
>>> <cd:artist>Bob Dylan</cd:artist>
>>> <cd:dbpedia rdf:resource="http://dbpedia.org/resource/Empire_Burlesque">
>>> </rdf:Description>
>>> </rdf:RDF>
>>> </script>
>>> </head>
>>> <body>
>>> </body>
>>> </html>
>>> ******************************
>>> attach after html
>>> *****************************
>>> <html>
>>> <head>
>>> </head>
>>> <body>
>>> </body>
>>> </html>
>>> <rdf:RDF
>>> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
>>> xmlns:cd="http://www.recshop.fake/cd#">
>>>
>>> <rdf:Description
>>> rdf:about="http://www.recshop.fake/cd/Empire Burlesque">
>>> <cd:artist>Bob Dylan</cd:artist>
>>> <cd:dbpedia rdf:resource="http://dbpedia.org/resource/Empire_Burlesque">
>>> </rdf:Description>
>>> </rdf:RDF>
>>>
>>>
>>> --
>>> Dipl. Inf. Sebastian Hellmann
>>> Department of Computer Science, University of Leipzig
>>> Projects: http://nlp2rdf.org , http://dbpedia.org
>>> Homepage: http://bis.informatik.uni-leipzig.de/SebastianHellmann
>>> Research Group: http://aksw.org
>>>
>>>
>>
>>
>> --
>> John S. Erickson, Ph.D.
>> Director, Web Science Operations
>> Tetherless World Constellation (RPI)
>> <http://tw.rpi.edu>  <olyerickson@gmail.com>
>> Twitter&  Skype: olyerickson
>>
>>
>>
>
>


-- 
Dipl. Inf. Sebastian Hellmann
Department of Computer Science, University of Leipzig
Projects: http://nlp2rdf.org , http://dbpedia.org
Homepage: http://bis.informatik.uni-leipzig.de/SebastianHellmann
Research Group: http://aksw.org
Received on Tuesday, 12 June 2012 16:14:36 UTC

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