W3C home > Mailing lists > Public > public-rdfa@w3.org > September 2011

Vocabulary caching

From: Gregg Kellogg <gregg@kellogg-assoc.com>
Date: Wed, 7 Sep 2011 12:05:35 -0400
To: RDFa Community <public-rdfa@w3.org>
Message-ID: <C6D5074A-FC56-41CA-BB0B-60DC6155FEC5@greggkellogg.net>
In my implementation, I added vocabulary caching for some well-known vocabularies. This seems to follow our earlier recommendations about caching popular profiles. I started with obvious candidates from prefixes in the default profile. Note that in some cases, the vocabulary URI does not result in an RDFS representation of the vocabulary itself. Presumably this will resolve itself over time if the vocabularies become popular, but schema.org is a notable exception:

http://creativecommons.org/ns# (describes itself)
http://purl.org/dc/terms/ (describes itself)
http://usefulinc.com/ns/doap# (describes itself)
http://xmlns.com/foaf/0.1/ (describes itself, if given application/rdf+xml accept header)
http://purl.org/goodrelations/v1# (describes itself)
http://schema.org/ (does not describe itself, but even if it did, it wouldn't match http://schema.rdfs.org/all.ttl)
http://rdfs.org/sioc/ns# (describes itself)
http://www.w3.org/2004/02/skos/core# (describes itself)
http://www.w3.org/2008/05/skos-xl# (describes itself)

We should consider recommendations for caching well-known vocabularies and provide guidance for vocabulary authors, particularly that HTML versions of vocabularies SHOULD represent themselves using RDFa.

Gregg
Received on Wednesday, 7 September 2011 16:06:29 UTC

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