How do GEDmatch calculators work?

This video is about the various Linear Algebra methods used by GEDmatch to provide ethnicity estimates and oracles.
Here's some links to my genetics software:
https://github.com/AndreiKharchenko1/Gorilla-Oracle
https://github.com/AndreiKharchenko1/GorillaMix
https://github.com/AndreiKharchenko1/EyecolorIdentifier
https://github.com/AndreiKharchenko1/HardyWeinbergCalculator
https://github.com/AndreiKharchenko1/NOSH-Nose-shape-tool-
https://andreikh.itch.io/noshacot
https://andreikh.itch.io/aket40-andrei-kharchenko-eyecolor-tool
https://andreikh.itch.io/aketv2

Видео How do GEDmatch calculators work? канала Andrei DNA