Hi Éamonn --- I am curious about the outcomes presented in the SIGS paper, in particular, this portion of the paper:
"Solutions without introducing an event core in Darwin Core Archives: During the review of the solutions for the uses cases, it became apparent that either model could be applied to every use case. The core and extensions bore a complementary relationship and between them could express all the required information. The core simply provided the central anchor in the star schema from which to join the additional information. Therefore, using the Occurrence core, well established in the GBIF network through uptake of the IPT, seemed more appropriate than inventing CollectingEvent as an additional core type."
That SIGS paper has John Wieczorek and you both as authors, including many luminaries across the biodiversity standards spectrum. Given the above, its curious to see the EventCore come back again, along with a specific IPT version to support it.
So I see two issues, conflated, in this post you just made. One is the need for an EventCore at all, and the nature of relating Event and Occurrence/Material Sample. The second is the introduction of new terms, which seemingly have arrived after debate on similar terms - but framed around abundance - stalled a year ago. To my mind, these both require some further discussion, because I don't (necessarily) see TDWG community coherence around either issue?
Best, Rob
On Tue, Aug 19, 2014 at 6:11 AM, Éamonn Ó Tuama [GBIF] eotuama@gbif.org wrote:
Dear All,
GBIF is committed to exploring ways in which the IPT and Darwin Core Archive format can be extended for publishing sample-based data sets. In association with the EU BON project [1], a customised version of the IPT [2] has been deployed to test this using a special type of Darwin Core Archive in which the core is an “Event” with associated taxon occurrences in an “Occurrence” extension.
The Darwin Core vocabulary already provides a rich set of terms with many relevant for describing sample-based data. Synthesising several sources of input (GBIF organised workshop on sample data, May 2013 [3], discussions on the TDWG mailing list in late 2013; internal discussion among EU BON project partners), five new terms relating to sample data were identified as essential. The complete model including these new terms are fully described with examples in the online document “Publishing sample data using the GBIF IPT” [4].
As a first step towards ratification, we would like to register the new terms in the DwC Google Code tracker [5] if there are no major objections on this list. The five terms are:
*quantity*: the number or enumeration value of the quantityType(e.g., individuals, biomass, biovolume, BraunBlanquetScale) per samplingUnit or a percentage measure recorded for the sample.
*quantityType*: : the entity being referred to by quantity,e.g., individuals, biomass, %species, scale type.
*samplingGeometry*: an indication of what kind of space wassampled; select from point, line, area or volume.
*samplingUnit*: the unit of measurement used for reporting thequantity in the sample, e.g., minute, hour, day, metre, metre^2, metre^3. It is combined with quantity and quantityType to provide the complete measurement, e.g., 9 individuals per day, 4 biomass-gm per metre^2.
*eventSeriesID*: an identifier for a set of events that areassociated in some way, e.g., a monitoring series; may be a global unique identifier or an identifier specific to the series.
Best regards,
Éamonn
[1] http://eubon.eu
[3] http://www.standardsingenomics.org/index.php/sigen/article/view/sigs.4898640
[4] http://links.gbif.org/sample_data_model
[5] https://code.google.com/p/darwincore/issues/list
*Éamonn Ó Tuama, M.Sc., Ph.D. (eotuama@gbif.org eotuama@gbif.org), *
*Senior Programme Officer for Interoperability, *
*Global Biodiversity Information Facility Secretariat, *
*Universitetsparken 15, DK-2100, Copenhagen Ø, DENMARK*
*Phone: +45 3532 1494 <%2B45%203532%201494>; Fax: +45 3532 1480 <%2B45%203532%201480>*
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