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RDF metrics (was RE: Survey of RDF data on the Web)

From: Danny Ayers <danny666@virgilio.it>
Date: Wed, 21 Aug 2002 11:22:37 +0200
To: "Chris Croome" <chris@webarchitects.co.uk>, <andreas.eberhart@i-u.de>
Cc: <www-rdf-interest@w3.org>
Message-ID: <EBEPLGMHCDOJJJPCFHEFMEKMHIAA.danny666@virgilio.it>

Just mulling over document metrics that might be nice for future surveys.
Initial thoughts :

* total refs - incoming, outgoing
* ratio of in/out (authority/hub)
* locatability of refs - what proportion of URIs are URLs
* terminality - things that point to non-RDF data (like RSS)
* terminologicality (ugh - better word?) - how much content is assertions,
how much schema (TBox/ABox ratio?)

I'm sure most of this kind of stuff is well documented pre-RDF, but if the
results were themselves expressed in RDF then they could be very useful in
relevance heuristics. Done in SVG it might make pretty patterns, too...


Danny Ayers
<stuff> http://www.isacat.net </stuff>

Idea maps for the Semantic Web

>-----Original Message-----
>From: www-rdf-interest-request@w3.org
>[mailto:www-rdf-interest-request@w3.org]On Behalf Of Chris Croome
>Sent: 19 August 2002 16:54
>To: www-rdf-interest@w3.org
>Subject: Re: Survey of RDF data on the Web
>On Mon 19-Aug-2002 at 09:23:02 -0400, Dan Brickley wrote:
>> Hunting for RDF in the general Web is like looking for the proverbial
>> 'needle in a haystack'.
>I'm not sure if the interface at http://www.syndic8.com/ allows you to
>get a list of RSS 1.0 feeds but if it does that might be a good source
>since a valid RSS 1.0 feed should be valid RDF, however I suspect that
>these feeds will only reference XHTML rather than other RDF resources.
>Chris Croome                               <chris@webarchitects.co.uk>
>web design                             http://www.webarchitects.co.uk/
>web content management                               http://mkdoc.com/
>everything else                               http://chris.croome.net/
Received on Wednesday, 21 August 2002 05:32:30 UTC

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