The DFG Gerätegruppenschlüssel Ontology (DFG Equipment Group Classification, DFG GGS) provides an optional ontology extension for classifying scientific instruments. It is a formal RDF/OWL representation of a pre-existing classification hierarchy originally published in XLSX format by the Deutsche Forschungsgemeinschaft. Each classification level - H (Hundertergruppen), Z (Zehnergruppen), and E (Einergruppen) - is represented as owl:Class elements, with subclass statements according the hierarchy. Labels are provided in German. This extension may be of interest to VIVO users seeking a structured way to classify instrument types.
Main features
- 4517 classes in total, no object properties or data properties
- 3-tier hierarchy
- H (highest level) - 10 Classes
- Z (middle level) - 94 Classes
- E (lowest level) - 4413 Classes
- Nested under Instrument class (currently http://purl.obolibrary.org/obo/ERO_0000004)
- German labels
- prefix: dfgggs
DFG GGS Ontology OWL file
DFG GGS Ontology TTL file
Sample of the hierarchy in Protege, showing all ten H-level classes and two Z-level groups.
How to customize the extension using Protégé
How to import ontology extension into VIVO
Deutsche Forschungsgemeinschaft Gerätegruppenschlüssel webpage
Geraetegruppenschluessel spreadsheet from DFG
Geraetegruppenschluessel hierarchical CSV fie
The create_ggs_ontology.py script generates an ontology file (in .owl and .ttl formats) from the DFG Gerätegruppenschlüssel by parsing a CSV version containing the classification hierarchy.
Further information available in csv-to-owl