Does schema.org support global identifiers for items? - Closed Schema.org list - please join W3C group

The old Google Groups will be going away soon, but your browser is incompatible with the new version.
Closed Schema.org list - please join W3C group
Message from discussion Does schema.org support global identifiers for items?
Received-SPF: pass (google.com: domain of lin.w.cl...@gmail.com designates 209.85.214.181 as permitted sender) client-ip=209.85.214.181;
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        b=fZgqZsfcgZP5VAiaDlsfZXygGnpIEztiNOfPeaORU+LfnaovOMrSZlpE6qhEnFw5dz
         OJJPEAOR6ktzOgQflLIeMsqrNpneHpIqqtsopqxcoUTxeF/TQ8VLWndCjBslyVDz/bPn
         OsOiAsbploLAlgqSdeNoCxzJ4m8TtAKIbylZg=
MIME-Version: 1.0
In-Reply-To: <C620397A-ADC4-402D-8FB3-12C0F5D10...@gmail.com>
References: <BANLkTimvRPyW8csbrZeXTz1Rrn5mX8w...@mail.gmail.com>
	<F82E0E49-DA92-4D39-A69D-38612334A...@gmail.com>
	<BANLkTim9b+MyZcPfqVRLbOP_0uic1=Y...@mail.gmail.com>
	<C620397A-ADC4-402D-8FB3-12C0F5D10...@gmail.com>
Date: Wed, 22 Jun 2011 15:10:18 +0100
Message-ID: <BANLkTi=NeMgOeZfArJgR-G=i_nKO04E...@mail.gmail.com>
Subject: Re: Does schema.org support global identifiers for items?
From: Lin Clark <lin.w.cl...@gmail.com>
To: schemaorg-discussion@googlegroups.com
Content-Type: multipart/alternative; boundary=20cf3043475a41e64304a64d874f

--20cf3043475a41e64304a64d874f
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

It would actually NOT be a breach of the microdata spec. The microdata spec
makes clear
<http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#ite=
ms>that
it is up to the vocab whether it supports itemid. Specifically, it
says, "attribute
that references a vocabulary that is defined to support global identifiers
for items may also have an itemid attribute specified"

That said, I'm in BIG favor of using itemids, it is important for a lot of
the use cases I focus on in my Drupal development. Thanks, Peter, for
clarifying that this will be documented.

Best,
Lin

On Wed, Jun 22, 2011 at 3:03 PM, Martin Hepp <mfh...@gmail.com> wrote:

> Why should that matter? Even if schema.org is driven by three sponsors,
> there will be many more clients consuming such data for a multitude of
> purposes.
> It is actually already been crawled and considered by some RDF
> repositories.
>
> So as Kingsley said - even if Google, Yahoo, and Bing don't need itemid,
> they MUST NOT discourage anybody from using itemid (if properly). Everyth=
ing
> else would be a breach of the Microdata spec.
>
> Best
> Martin
>
> On Jun 22, 2011, at 12:44 PM, Philip J=E4genstedt wrote:
>
> > On Wed, Jun 22, 2011 at 11:26, Martin Hepp <mfh...@gmail.com> wrote:
> >> Please, do not disallow global identifiers for items!
> >> This is key for helping search engines to connect dots distributed
> across large e-commerce shop sites.
> >
> > Only if the sponsors actually do something with it, hence the
> > question. If they do something with it, then I hope it's going to be
> > documented.
> >
> > --
> > Philip J=E4genstedt
>
> --------------------------------------------------------
> martin hepp
> e-business & web science research group
> universitaet der bundeswehr muenchen
>
> e-mail:  h...@ebusiness-unibw.org
> phone:   +49-(0)89-6004-4217
> fax:     +49-(0)89-6004-4620
> www:     http://www.unibw.de/ebusiness/ (group)
>         http://www.heppnetz.de/ (personal)
> skype:   mfhepp
> twitter: mfhepp
>
>


--=20
Lin Clark
DERI, NUI Galway <http://www.deri.ie/>

lin-clark.com
twitter.com/linclark

--20cf3043475a41e64304a64d874f
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

It would actually NOT be a breach of the microdata spec. The <a href=3D"htt=
p://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#items">=
microdata spec makes clear </a>that it is up to the vocab whether it suppor=
ts itemid. Specifically, it says, &quot;<span class=3D"Apple-style-span" st=
yle=3D"font-family: sans-serif, &#39;Droid Sans Fallback&#39;; line-height:=
 21px; font-size: medium; "><dfn id=3D"support-global-identifiers-for-items=
" style=3D"font-weight: bold; font-style: normal; cursor: pointer; "><meta =
charset=3D"utf-8"><span class=3D"Apple-style-span" style=3D"font-weight: no=
rmal; ">attribute that references a vocabulary that is defined to=A0<dfn id=
=3D"support-global-identifiers-for-items" style=3D"font-weight: bold; font-=
style: normal; cursor: pointer; ">support global identifiers for items</dfn=
>=A0may also have an=A0<dfn id=3D"attr-itemid" title=3D"attr-itemid" style=
=3D"font-weight: bold; font-style: normal; cursor: pointer; "><code style=
=3D"font-size: inherit; font-family: monospace, &#39;Droid Sans Fallback&#3=
9;, sans-serif; font-variant: normal; color: rgb(255, 69, 0); ">itemid</cod=
e></dfn>=A0attribute specified</span>&quot;</dfn></span><div>
<br></div><div>That said, I&#39;m in BIG favor of using itemids, it is impo=
rtant for a lot of the use cases I focus on in my Drupal development. Thank=
s, Peter, for clarifying that this will be documented.</div><div><br></div>
<div>Best,</div><div>Lin</div><div><br><div class=3D"gmail_quote">On Wed, J=
un 22, 2011 at 3:03 PM, Martin Hepp <span dir=3D"ltr">&lt;<a href=3D"mailto=
:mfh...@gmail.com">mfh...@gmail.com</a>&gt;</span> wrote:<br><blockquote cl=
ass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;p=
adding-left:1ex;">
Why should that matter? Even if <a href=3D"http://schema.org" target=3D"_bl=
ank">schema.org</a> is driven by three sponsors, there will be many more cl=
ients consuming such data for a multitude of purposes.<br>
It is actually already been crawled and considered by some RDF repositories=
.<br>
<br>
So as Kingsley said - even if Google, Yahoo, and Bing don&#39;t need itemid=
, they MUST NOT discourage anybody from using itemid (if properly). Everyth=
ing else would be a breach of the Microdata spec.<br>
<br>
Best<br>
Martin<br>
<br>
On Jun 22, 2011, at 12:44 PM, Philip J=E4genstedt wrote:<br>
<br>
&gt; On Wed, Jun 22, 2011 at 11:26, Martin Hepp &lt;<a href=3D"mailto:mfhep=
p...@gmail.com">mfh...@gmail.com</a>&gt; wrote:<br>
&gt;&gt; Please, do not disallow global identifiers for items!<br>
&gt;&gt; This is key for helping search engines to connect dots distributed=
 across large e-commerce shop sites.<br>
&gt;<br>
&gt; Only if the sponsors actually do something with it, hence the<br>
&gt; question. If they do something with it, then I hope it&#39;s going to =
be<br>
&gt; documented.<br>
&gt;<br>
&gt; --<br>
&gt; Philip J=E4genstedt<br>
<br>
--------------------------------------------------------<br>
martin hepp<br>
e-business &amp; web science research group<br>
universitaet der bundeswehr muenchen<br>
<br>
e-mail: =A0<a href=3D"mailto:h...@ebusiness-unibw.org">hepp@ebusiness-unibw=
.org</a><br>
phone: =A0 <a href=3D"tel:%2B49-%280%2989-6004-4217" value=3D"+498960044217=
">+49-(0)89-6004-4217</a><br>
fax: =A0 =A0 <a href=3D"tel:%2B49-%280%2989-6004-4620" value=3D"+4989600446=
20">+49-(0)89-6004-4620</a><br>
www: =A0 =A0 <a href=3D"http://www.unibw.de/ebusiness/" target=3D"_blank">h=
ttp://www.unibw.de/ebusiness/</a> (group)<br>
 =A0 =A0 =A0 =A0 <a href=3D"http://www.heppnetz.de/" target=3D"_blank">http=
://www.heppnetz.de/</a> (personal)<br>
skype: =A0 mfhepp<br>
twitter: mfhepp<br>
<br>
</blockquote></div><br><br clear=3D"all"><br>-- <br><div>Lin Clark</div><di=
v><a href=3D"http://www.deri.ie/" target=3D"_blank">DERI, NUI Galway</a></d=
iv><div><br></div><div><a href=3D"http://lin-clark.com" target=3D"_blank">l=
in-clark.com</a></div>
<div><a href=3D"http://twitter.com/linclark" target=3D"_blank">twitter.com/=
linclark</a></div><br>
</div>

--20cf3043475a41e64304a64d874f--
Create a group - Google Groups - Google Home - Terms of Service - Privacy Policy
Account Options
