Looks like an interesting use case of the Relation annotation collection in MedCATtrainer.
A given relation if selected on the right hand side adds little ‘start’ / ‘end’ labels on the top right of the relation to help tell one set of relations from another, although this still isn’t as clear as it could be…
Looks interesting… Other than relationships between two identified concepts. Is it possible to link a concept with a numerical or date value? e.g. fever, cough on the 01/04/2020. Where there are links between each symptom concept and the date?
In light of the demand for this functionality, I have been thinking some more.
SNOMED has the concept domain of a “qualifier”, concepts which act as attributes to existing concepts. CUI 362981000
Perhaps instead of inventing a whole relational annotation system, one would only annotate the Qualifier and the main concept and then annotate the Relation as a “Snomed Qualifier”.
In this way, future RelCat annotations might even begin to resemble elements of post-coordinated Snomed expressions.
The “fly in the ointment” to this is that it may not work so well if the attributed concept isn’t a Qualifier but an anatomical term or something else.