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Re: Facebook - RDFa in Open Graph Protocol

From: Melvin Carvalho <melvincarvalho@gmail.com>
Date: Wed, 21 Apr 2010 21:39:25 +0200
Message-ID: <y2z9178f78c1004211239xd9773679hd2cd1f43c02cc8e9@mail.gmail.com>
To: Dan Brickley <danbri@danbri.org>
Cc: public-rdfa <public-rdfa@w3.org>, David Recordon <recordond@gmail.com>
2010/4/21 Dan Brickley <danbri@danbri.org>

> So this just got a high-profile launch at Facebook's F8 conference a
> couple hours ago -
>
> http://opengraphprotocol.org/
> http://developers.facebook.com/docs/opengraph
>
> They're using RDFa, putting structured data into Web sites to sit
> alongside a Facebook "Likes" button, so that the topic of the page
> (movie, restaurant, book, whatever...) can be understood by apps
> downstream dealing with the social data. The RDFa is pretty basic, and
> I warned David that there's a good chance they'll be jumped upon by
> 100s of well-meaning semweb advocates arguing that they should be
> using more existing vocabs, different syntax structures, etc etc. I'd
> urge you all to go gently on that front for now, and focus instead
> more on how we can improve RDFa tooling and specs than on lobbying for
> improvements.
>

One question I have:

<html xmlns:og="http://opengraphprotocol.org/schema/">
<head>
<title>The Rock (1996)</title>
<meta property="og:title" content="The Rock" />
<meta property="og:type" content="movie" />
<meta property="og:url" content="http://www.imdb.com/title/tt0117500/" />
<meta property="og:image" content="http://ia.media-imdb.com/images/rock.jpg"
/>
...
</head>
...
</html>

should some of the property attributes be rels?


>
> >From what I've seen RDFa's graph data model is a good fit for what
> they're trying to express (i.e. things and properties), the use of
> RDFa in the HTML header makes sense given the desire for fairly
> regular data that doesn't get trashed with every site redesign, and
> the current use of <meta> isn't quite ideal since properties have an
> indirect meaning along the lines of "the director (of the film this
> page is about)", "the cuisine (of the bar this page is about)" etc.
> but I think is a fine start. This modelling might be quirky but it's
> their choice, and perhaps a step towards something more expressively
> graphy. We'll see. Looking to the future I hope we can see some of the
> deployment pragmatics from this work feed into the RDFa 1.1 design...
>
> cheers,
>
> Dan
>
>
Received on Wednesday, 21 April 2010 20:01:49 UTC

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