What is the reason for data type classes in EMMO ?

[paulzierep]

EMMO uses Classes to describe data types e.g.: http://emmo.info/emmo/middle/math#EMMO_f8bd64d5_5d3e_4ad4_a46e_c30714fecb7f (Integer)

This is an interesting modeling choice, since the standard way to describe data types with owl or rdf in general is done using datatypes such as http://www.w3.org/2001/XMLSchema#integer.

In fact, this leads to a discrepancy between EMMO and almost any other ontology, which does hinder the possibility to match EMMO classes and individuals to other ontologies.

E.g.:
EMMO quantity modeling:
Any Concept (Individual) -> hasQuantityValue -> Integer (Individual) -> hasNumericalData -> xsd:integer

Why not:
Any Concept (Individual) -> hasNumericalData -> xsd:integer

Since the datatype is anyhow described by xsd:integer.