[Esip-preserve] Fwd: ok, let's start with GCIS identifiers

[Curt Tilmes]

Talked with Chris Lynnes a bit about URI identifiers for the
entities needed for the ToolMatch semantic service the ESIP
semantic web cluster is working on.

I want to tie it in with the GCIS identifiers we've been
talking about, and proposed we come up with a common URI
scheme which we can root under globalchange.gov.

More discussion about these URIs will continue 'over there'..

Curt

-------- Original Message --------
Subject: ok, let's start with GCIS identifiers
Date: Tue, 27 Mar 2012 17:11:41 -0500
From: Lynnes, Christopher S. (GSFC-6102) <christopher.s.lynnes at nasa.gov>
To: Tilmes, Curt (GSFC-6190) <curt.tilmes at nasa.gov>
CC: esip-semanticweb at rtpnet.org <esip-semanticweb at rtpnet.org>

Consensus was that we would like to shoot for URIs with RDF content.  No 
objections to going with GCIS naming, so...let's go with it.

I would suggest that we start off with minimal properties, but one (or 
more) property we should have is a pointer to somewhere where more 
information can be gotten.   For this, I suggest gcmdDif, doi and 
datasetUrl (for dataset landing pages).

Eventually, content negotiation to fetch in RDF/XML vs. HTML would be nice.

Next question is whether service access points (WMS, WCS, OPeNDAP, 
THREDDS) should also be a property within the GCIS-hosted content. What 
do you think?

If you think no, we can always host the access point triples somewhere 
else.  We need it to try inferring which tools work with a given dataset.

As for the identifier naming scheme, my suggestion is to allow for three:
http://globalchange.gov/dataset/gcmd/<dif_entry_id>
http://globalchange.gov/dataset/doi/<doi>
http://globalchange.gov/dataset/uuid/<uuid>

The dif_entry_id can account for nearly all NASA datasets, and a lot 
more besides.  The doi can account for DOE and possibly others, and the 
uuid can be minted by anyone that does not fall into those categories.
--
Dr. Christopher Lynnes     NASA/GSFC, Code 610.2    phone: 301-614-5185