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Re: Are many (X)HTML documents also RDF/XML documents?

From: Wouter Beek <wouter@triply.cc>
Date: Tue, 7 May 2019 00:44:42 +0200
Message-ID: <CAEh2WcOMhgwAYx5VyeM94dzRj3Xg5MS2PcK4qmG7SCvoTU2ZTw@mail.gmail.com>
To: Antoine Zimmermann <antoine.zimmermann@emse.fr>
Cc: SW-forum Web <semantic-web@w3.org>
Dear Antoine,

Even though the RDF namespace is not defined in most HTML documents,
could regular HTML tags like `<p>' and `<table>' not be interpreted as
relative IRIs?  This is at least what Rapper and
rdfxml-streaming-parser.js seem to do.  See
<https://github.com/rdfjs/rdfxml-streaming-parser.js/issues/13> for a
specific example.

The W3C validator indeed does not parse my HTML example document, but
it does not make clear why it does not do so.  Since HTML has one
parent node, the quoted remark from the RDF/XML specification seems to
allow for such 'RDF/XML' documents.  Maybe the W3C validator is at
fault here and there are billions of RDF documents out there on the
web after all?

---
Best,
Wouter.

Email: wouter@triply.cc
WWW: https://triply.cc
Tel: +31647674624

On Mon, May 6, 2019 at 11:21 PM Antoine Zimmermann
<antoine.zimmermann@emse.fr> wrote:
>
> Interesting remark. I'm not sure what the phrases you quote imply in
> general, but if you give the following input to the RDF validator at
> https://www.w3.org/RDF/Validator/, you get an error.
>
> The grammar of rdf:XML is given at
> https://www.w3.org/TR/rdf-syntax-grammar/#section-Infoset-Grammar
>
> I don't think that many HTML documents qualify as RDF/XML, if any.
>
> On 06/05/2019 21:55, Wouter Beek wrote:
> > <?xml version="1.0" encoding="utf-8"?>
> > <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
> > "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
> > <html xmlns="http://www.w3.org/1999/xhtml">
> > <head>
> >    <title>
> >    </title>
> > </head>
> > <body>
> >    <table>
> >      <tr>
> >        <td>some col 1</td>
> >      </tr>
> >    </table>
> > </body>
> > </html>
>
>
> --
> Antoine Zimmermann
> ISCOD / LSTI - Institut Henri Fayol
> École Nationale Supérieure des Mines de Saint-Étienne
> 158 cours Fauriel
> 42023 Saint-Étienne Cedex 2
> France
> Tél:+33(0)4 77 42 66 03
> Fax:+33(0)4 77 42 66 66
> http://zimmer.aprilfoolsreview.com/
Received on Monday, 6 May 2019 22:45:42 UTC

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