GUIDs

Hi
 
I have some questions from a related community.
The community is a biodiversity inormatics group involved with creating
data sharing and interoperability standards (TDWG Taxonomic Databases
Working Group - www.tdwg.org).
 
Questions:
What GUIDs are you using within your community, or are intending to use
to identify instances of your data (eg PURL, LSID)?
 
Will you use the same GUID for all data objects, eg do RDF classes get
the same sort of ID as an instance of that class?
 
We are currently looking at several technologies including LSIDs, PURLs
and DOIs.  Does anyone have any thoughts on these options?  At present
we are leaning towards the LSID, and returning RDF as the metdata to
allow sematntic web type functionality.  However we have considered the
problem of LSID resolution and wonder if the requirement for LSIDs to be
resolved through LSID client software may be too restrictive when
working with semantic web tools - eg an RDF/RDFS document with LSIDs
throughout will not be automatically resolved by most semantic web tools
as the tools do not "know" how to resolve these particular urns.  Any
thoughts?
 
Thanks
Kevin Richards

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