arnauropero

ML & AI Engineer | sharing what's worth your time

[arnauropero @_arnauropero_]

two players, a fair coin, 50/50, no edge.

after enough flips, one ends up with almost everything.

why: they bet a % of what they have, not a fixed amount. that breaks "fair."

same reason a model looks great in backtest and fails in production.

https://t.co/CmTTpoUiD9

[arnauropero @_arnauropero_]

the idea that made eigenvectors click: most directions get rotated by a transformation. a few don't, they only stretch or shrink.

those are eigenvectors. eigenvalue = amount of stretch.

PCA finds those directions in data and keeps the biggest ones.

https://t.co/YfGiDgl16U