Maybe code on github will enlighten? Where there is a lack of offical explanation, find the information yourself in the public code.
I wrote a message here linking some code for the CV just a moment ago. https://forum.inaturalist.org/t/north-american-sinea-id-and-the-sorcerers-apprentice-problem/68337/21?u=zoology123
Some of it is out of my league though as im not a coder.
Surely there is code for the geomodel on github somewhere?