Thanks all,
Interesting to see the new MMI ontology work.
I take from this discussion then that there is not currently a CF
'blessed' method to reference a term?
E.g. for air_temperature I can choose from any of these:
http://mmisw.org/ont/cf/parameter/air_temperature
http://vocab.ndg.nerc.ac.uk/term/P071/16/CFSN0023
http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name-table/16/cf-standard-name-table.html#air_temperature
plus:
http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name-table/16/cf-standard-name-table.xml
Cheers,
Dom
On 14/12/10 08:18, Lowry, Roy K. wrote:
Dear All,
Working to find a way of harmonising the two sources of web-served
Standard Names is on by ‘To-Do’ list for next year (part of an issue
list fed into the NETMAR project by John G.)
Cheers, Roy.
*From:* cf-metadata-boun...@cgd.ucar.edu
[mailto:cf-metadata-boun...@cgd.ucar.edu] *On Behalf Of *John Graybeal
*Sent:* 13 December 2010 22:28
*To:* Benno Blumenthal
*Cc:* cf-metadata@cgd.ucar.edu
*Subject:* Re: [CF-metadata] Web reference to a standard name?
A minor clarification as to how MMI is doing things:
Benno, all,
On Dec 13, 2010, at 07:25, Benno Blumenthal wrote:
We have tried to get standard URIs for CF concepts, but the effort
bogged down.
As for standard names, MMI established a set of URIs at
http://marinemetadata.org/cf
but has not been keeping up to date.
Thanks for the mention. This is our older URL, sorry; we are now
maintaining CF standard names in our ontology repository, using
resolvable URLs. [1]
There was a period when MMI was not keeping up to date with CF changes,
but in the recent past we have been continuously updating the SKOS
ontology for the parameter names at the site Carlos mentioned [1] (We
will forward the misleading /cf URL above, or fix it to make clear in
some other way the current status; thanks for calling that out.)
As with Roy's handling, we provide URLs both for the current version at
the reference URL, and for individual releases of the vocabulary.
John
[1] http://mmisw.org/ont/cf/parameter
I have written a XSL transform at
http://iridl.ldeo.columbia.edu/ontologies/xslt/.cfsn2rdf.xsl
that can be applied to
http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name-table/16/cf-standard-name-table.xml
to generate an up-to-date version, e.g.
xsltproc http://iridl.ldeo.columbia.edu/ontologies/xslt/.cfsn2rdf.xsl
http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standard-name-table/16/cf-standard-name-table.xml
On the other hand, Roy has created opaque URIs for standard names at
http://vocab.ndg.nerc.ac.uk/list/P07/9 contains all the Standard Names
that have ever been published, including names that have been aliased
http://vocab.ndg.nerc.ac.uk/list/P071/9 contains the Standard Names that
are currently valid (i.e. those that have not been deprecated through
aliasing)
http://vocab.ndg.nerc.ac.uk/list/P072/9 contains the Standard Names that
have been deprecated through aliasing
The mapping between deprecates and their replacement aliases my be
obtained through the following API call
http://vocab.ndg.nerc.ac.uk/axis2/services/vocab/getMap?subjectList=http://vocab.ndg.nerc.ac.uk/list/P072/current&predicate=255&objectList=http://vocab.ndg.nerc.ac.uk/list/P071/current&inference=false
<http://vocab.ndg.nerc.ac.uk/axis2/services/vocab/getMap?subjectList=http://vocab.ndg.nerc.ac.uk/list/P072/current&predicate=255&objectList=http://vocab.ndg.nerc.ac.uk/list/P071/current&inference=false>
he changes them with each version, so it is both more definitive and
harder to use. It is also pure SKOS, so one needs to add structure to
actually connect it with a CF-described dataset. I plan to write out a
map between the two, so that I can use his relationships between CF
standard_names, but I do not have it yet.
Additional information and ontologies describing the CF structure both
as attributes and conceptually are available at
http://iridl.ldeo.columbia.edu/ontologies/, including the connections
between the standard_name ontologies and the CF structure.
Benno
On Mon, Dec 13, 2010 at 9:22 AM, Dominic Lowe <dominic.l...@stfc.ac.uk
<mailto:dominic.l...@stfc.ac.uk>> wrote:
> Hello all,
>
> What's the current CF recommended scheme for referencing a standard
name on
> the web? (either by URL or URN).
>
> I know about the vocab server and the xml/html online versions and could
> choose to use URLs to point to items in any of these but is there a
> definitive pattern that should be used? (or at least a best practice that
> should be encouraged?).
>
> Much appreciated,
>
> Dominic
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Dr. M. Benno Blumenthal be...@iri.columbia.edu
<mailto:be...@iri.columbia.edu>
International Research Institute for climate and society
The Earth Institute at Columbia University
Lamont Campus, Palisades NY 10964-8000 (845) 680-4450
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Marine Metadata Interoperability Project: http://marinemetadata.org
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