3 ms·
That's true for any ball, even in 2D - most volume is by the edge. But a Gaussian in low dimensions looks "closer" to 0.
by rich_sasha 3y ago
That's true for any ball, even in 2D - most volume is by the edge. But a Gaussian in low dimensions looks "closer" to 0.
- kgwgk 3y agoSure, in a 2D ball most volume is by the edge and most of a 2D Gaussian is around radious sqrt(2). In either case the “concentration” gets more and more important as the number of dimensions goes up. (Concentration in quotes because for the Gaussian the typical density goes down.)