iSamples Vocabularies
Vocabularies for interoperable sample description
1 Vocabularies
One of the foundations for interoperability of iSamples material sample descriptions is the definition of vocabularies for the categorization of sample type. There are three core vocabularies for different aspects of sample type: material sample type, material type, and sampled feature type. Each vocabulary is maintained as an RDF file using the SKOS vocabulary, with hierarchical relationships using SKOS:broader. In order to be domain agnostic, these core taxonomies cover a small set of top level terms. The taxonomies may be extended as necessary to support more specialized domains by relating additional terms using SKOS:broader and SKOS:narrower.
Three top level taxonomies for categorization of sample type are currently defined:
| Title | Subtitle |
|---|---|
| Sampled Feature Type vocabulary | Categories to specify the broad context that a sample is intended to represent. |
| iSamples Material Sample Object Type Vocabulary | Broad categories to specify the kind of physical object identified as the ‘sample’. |
| iSamples Materials Vocabulary | High level vocabulary to specify the kind of material that constitutes a physical sample |
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| Title | Subtitle |
|---|---|
| Biology Extension: Basic taxon classes for biological entity | This is a vocabulary to categorize sampled organisms (whole or part) according to taxonomic classes. Classes are based largely on taxonomy found in Wikipedia, particularly Whittaker’s five kingdom system (1969) (https://en.wikipedia.org/wiki/Kingdom_(biology), https://doi.org/10.1126%2Fscience.163.3863.150). The intended use is in iSamples cross domain categorization of material samples, recognizing that there are multiple view for taxonomy and cladistics for the tree of life. This is a high level view intended for cross domain purposes, not expert analysis. Other extension vocabularies should be used for other taxonomic schemes |
| Earth and Environmental Science extension - Material sample type | This concept scheme contains skos concepts for categorizing kinds of Earth Material sample types, extending the iSamples Material Sample Object Type vocabulary. Defintions from SESAR, ODM2, wikipedia, ESS-DIVE, and other sources; sources are cited with each term. |
| Earth and Environmental Science extension - Mineral group vocabulary | Vocabulary to extend the mineral material type category with the top level mineral group categories. Uses the Nickel–Strunz mineral classes, which divide minerals into ten classes according to chemical composition and crystal structure. Nickel-Strunz group 10 is not included because that material would be mat:organiccompounds. Version 10 of the classification is modified from v 9 (Strunz and Nickel,2002) by Jim Ferraiolo and others, and now extended and maintained by mindat.org. Some scope notes from linked.data.gov.au. |
| Earth and Environmental Science extension - Rock and sediment materials vocabulary | Rock and sediment categories for iSamples materialType classification. Remove anthropogenic materials and classes for consolidated or non-consolidated material; remove leaf classes subjectively based on abundance of material type and number of subclasses. There are 83 ‘mat:rock’ subclasses; these include some classes that are non-consolidated material (e.g. fault gouge) but these are not sediment and adding ‘material’ classes that are independent of consolidation seems like more overhead than needed. Note that a given material is likely to fit in more that one class; for example the sediment subclasses include compositional classes (e.g. carbonate, clastic) as well as grain size classes (gravel-size sediment). A calcareous ooze sample would be both ‘mud-size sediment’ and ‘carbonate sediment’. Change owl:class to skos:concept, and rdfs:subClassOf to skos:broader. |
| Earth and Environmental Science extension - Sampled feature role | Terms to categorize the relation of a sampled feature to its context. In the Earth Science realm this is typically relation of sampled feature to a containing rock body or rock body part. |
| Open Context vocabulary extension for material sample object type | categories for kinds of sample objects specific to archaeological studies |
| OpenContext material type extension draft | vocabulary of materials typical of archeological samples |
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