What is meant by 'affine' model in physical sciences?

[feynman1]

What's meant by 'affine' model in physical sciences? I guess it's related to some ideal or benchmark model?

 

[Baluncore]

A ideal model is compared with a real example.
The connection or mapping between the two is an 'affine transform'.
An affine transform preserves parallel lines.
I guess the model of the ideal could be called an 'affine model'.
https://en.wikipedia.org/wiki/Affine_transformation

 

[feynman1]

A ideal model is compared with a real example.
The connection or mapping between the two is an 'affine transform'.
An affine transform preserves parallel lines.
I guess the model of the ideal could be called an 'affine model'.
https://en.wikipedia.org/wiki/Affine_transformation

affine transform has nothing to do with affine model?

 

[Baluncore]

affine transform has nothing to do with affine model?

There seems to be no such thing as an "affine model".

"Affine model" appears to be a conflation of the terms "affine" transform and the transformed ideal "model". That might be used to refer to a model that is subjected to an affine transform.