On Mon, 25 Jul 2011, Donald.Hobern@csiro.au wrote:
I've been giving some thought to the class terms and the examples of class-based DwC data in the Darwin Core XML Guide (http://rs.tdwg.org/dwc/terms/guides/xml/index.htm - see the Classes and Containment section). As this list has recently been discussing Simple DwC and the restrictions it imposes, I'd be interested in knowing of the experience of any projects that have sought to use the class terms as a mechanism for streaming richer data using Darwin Core.
Can anyone provide examples of projects sharing data in this way?
Did anyone respond to you off list, Donald? DeVries and Baskauf/Webb are both exploring class-based approaches, although they found it necessary to go outside Darwin Core to do so. For the bioblitz, we moved from (almost) Simple DwC in the Google Spreadsheet to class-based DwC in the RDF. I'm curious to see other examples, whether rdf or xml-schema based.
Are there any findings on the success of exporting and consuming class-based DwC data, in particular on the consistency of how such data are interpreted? Has anyone given thought to how a consumer would derive the equivalent of a set of best-fit Simple DwC records from the kind of class-based DwC presented in the guide's examples?
One can always de-normlalize (i.e. do a join on occurenceID) to get a Simple DwC representation. But there will be multiple records for some occurrences, one for each identification. I assume that what you're really asking is either: "what heuristics should be used to determine the correct identification, when multiple identification exists"? Or "what technical solution (e.g. an appropriate annotation framework) can we deploy to ensure that identificationVerificationStatus fields exist where possible?" Is that correct?
Thanks, Joel.
Thanks,
Donald
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Donald Hobern, Director, Atlas of Living Australia CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, ACT 2601 Phone: (02) 62464352 Mobile: 0437990208 Email: Donald.Hobern@csiro.aumailto:Donald.Hobern@csiro.au Web: http://www.ala.org.au/