Revisit `model descriptor` and subclasses

[l-emele]

Description of the issue

The class model descriptor is currently defined as A model descriptor is an information content entity that contains information about some model. It is axiomatised as equivalent class:

'information content entity'
    and ('is about' some 'numerical computer model')

Subclasses are:

• analytical approach: A analytical approach is a model descriptor that contains information about the analysis strategy of a model.
• methodological approach: A methodical focus is a model descriptor that specifies the primary calculation method used in a model.
• model documentation: A model documentation is a model descriptor that contains a detailed description of a model.
• primary modelling purpose: A primary modelling purpose is a model descriptor stating the main purpose of a model.
• uncertainty approach: An uncertainty approach is a model descriptor that specifies how a model deals with uncertainty.

While reading those definitions, I thought whether these are rather model qualities or model functions or something like that.

Ideas of solution

If you already have ideas for the solution describe them here

Workflow checklist

• [ ] I discussed the issue with someone else than me before working on a solution
• [ ] I already read the latest version of the workflow for this repository
• [ ] The goal of this ontology is clear to me

I am aware that

• [ ] every entry in the ontology should have a definition
• [ ] classes should arise from concepts rather than from words

[madbkr]

From reading this it feel like there is quite the disconnect between the axiom and the definition of model descriptor. Especially since it is defined as equivalence class.

The subclasses seem better in line with the definition than the axiom. But maybe that's just me misinterpreting it.