[tdwg-content] dwc:associatedOccurrences

Jason Holmberg holmbergius at gmail.com
Mon Aug 23 21:13:01 CEST 2010

This discussion about associated occurrences and identity reminds me that I
really could use an advisor on my open source project for a common
mark-recapture database:


As much as possible, I am trying to map database fields and data management
functions to DarwinCore terms and standards.

Is there anyone who would be willing to act as an "advisor" on the project?

Thanks in advance,
Jason Holmberg

On Mon, Aug 23, 2010 at 12:07 PM, Steve Baskauf <
steve.baskauf at vanderbilt.edu> wrote:

>  Bob,
> It seems to me that the most semantically clear way to indicate in a
> machine-readable way that two herbarium sheets are duplicates would be to
> assert that they have the same dwc:individualID.  individualID is defined as
> "An identifier for an individual or named group of individual organisms
> represented in the Occurrence" so asserting that two occurrences represent
> the same individual or named group of individual organisms pretty much
> exactly describes what duplicate specimens are.  I use this same approach to
> indicate that
> http://bioimages.vanderbilt.edu/baskauf/67307
> is an image of an acorn from the same tree:
> http://bioimages.vanderbilt.edu/ind-baskauf/67304
> as the bark image
> http://bioimages.vanderbilt.edu/baskauf/67312
> I won't say more here as I have written more extensively on this approach
> in *Biodiversity Informatics* 7:17-44 (
> https://journals.ku.edu/index.php/jbi/article/view/3664).  You can also
> look at the RDF associated with those GUIDs to see what I mean.  Solving
> this problem is also one of the reasons I have proposed adding the class
> Individual to DwC (i.e. so that the individuals that are the object of
> dwc:individualID can be rdfs:type'd using a well-known vocabulary and
> therefore be "understood" by linked data clients).
> Steve
> Bob Morris wrote:
> http://rs.tdwg.org/dwc/terms/index.htm#associatedOccurrences   carries
> this description:
> associatedOccurrences
> Identifier:	http://rs.tdwg.org/dwc/terms/associatedOccurrences
> Class:	http://rs.tdwg.org/dwc/terms/Occurrence
> Definition:	A list (concatenated and separated) of identifiers of
> other Occurrence records and their associations to this Occurrence.
> Comment:	Example: "sibling of FMNH:Mammal:1234; sibling of
> FMNH:Mammal:1235". For discussion seehttp://code.google.com/p/darwincore/wiki/Occurrence
> Details:	associatedOccurrences
> My questions:
> a.  Are the names of the associations, and/or the syntax of the value
> meant to be community defined?
> b. If no to a. , where are those definitions? If yes, Have any
> communities defined any names and syntax? I am especially interested
> in "duplicate of" in the case of herbarium sheets."
> c. (May share an answer with b.) Is there any use being made by anyone
> in which associatedOccurrences is designed to have machine-readable
> values.  If yes, where?
> Thanks
> Bob
> --
> Steven J. Baskauf, Ph.D., Senior Lecturer
> Vanderbilt University Dept. of Biological Sciences
> postal mail address:
> VU Station B 351634
> Nashville, TN  37235-1634,  U.S.A.
> delivery address:
> 2125 Stevenson Center
> 1161 21st Ave., S.
> Nashville, TN 37235
> office: 2128 Stevenson Center
> phone: (615) 343-4582,  fax: (615) 343-6707http://bioimages.vanderbilt.edu
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