Larger controlled vocabulary, especially from ontologies tend to be organized as a tree. In our application we use e.g. controlled vocabulary to classify materials. This classification is made to the precision that is known for a given sample. It could for example be anywhere between:
- metal
- ferrous alloy
- steel
- S355
- steel
- ferrous alloy
- polymer
- …
All nodes in the tree are valid terms. It would be extremeley helpful if (the selection of a) controlled vocabulary would support a tree view.
Thanks and best regards.