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Feature Report.md

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Feature Report

Authors: Members of the Chronometric Age Extension Task Group [1]

From section 4.2.1 of the Vocabulary Maintenance Specification [2]:

"The purpose of the Feature Report is to identify the features that should be included in the enhancement in order to achieve goals identified by the community...the report should include a numbered list of features and indicate how the need for each feature was determined from community input."

Features

In the course of the development, various required features were identified, namely, the vocabulary must be able to express

  1. a chronometric age without confounding that age with the Darwin Core eventDate (https://dwc.tdwg.org/terms/#dwc:eventDate), which, according to common usage, should represent when the material was recovered from its context.
  2. inputs to, the results of, and the process used to determine a chronometric age.
  3. the chronometric age in terms of distinct minimum and maximum values.
  4. the type of material used as the basis of the chronometric age determination.
  5. a (single) temporal uncertainty associated with minimum and maximum ages.
  6. published references associated with the chronometric age determination.
  7. the output of a dating assay before it is calibrated into an age using a specific conversion protocol.
  8. the method used to convert the uncalibrated chronometric age (feature 7) into a chronometric age in years.
  9. who was responsible for the chronometric age determination, and when it was done.

Features numbered 1-6 were the original features required for the publication of a set of exemplar zooarchaeological data sets with varied chronometric assays to determine age. These examples were elected by researchers from ZooArchNet [3] and originally implemented both in the extension definition and in data publication in collaboration with VertNet [4]. Features 7-8 were identified after the first implementations had been tested for zooarchaeology and then circulated to the archaeological and paleontology communities [5]. Features identified in 9 were recommended by the Darwin Core Maintenance Interest Group [6] in order to be consistent with other classes of information in Darwin Core.

References

[1] https://www.tdwg.org/community/esp/chrono/
[2] https://github.com/tdwg/vocab/blob/master/vms/maintenance-specification.md
[3] https://zooarchnet.org/
[4] http://vertnet.org/
[5] LeFebvre MJ, Brenskelle L, Wieczorek J, Kansa SW, Kansa EC, Wallis NJ, et al. (2019) ZooArchNet: Connecting zooarchaeological specimens to the biodiversity and archaeology data networks. PLoS ONE 14(4): e0215369. https://doi.org/10.1371/journal.pone.0215369
[6] https://www.tdwg.org/community/dwc/