what argmax means?

21.5k Views Asked by At

my main problem is that, i don't understand what argmax means in this equation (page 134., figure 4., the output part)

I want to write a code, but i don't understand this equation. Is there any simpler form of this equation ? (maybe an example)

This is how i understand it: 1. i count the sum first 2. i find the argmax

Sorry for my dummy question, but i am not realy good in this area. Thanks for your answers !

1

There are 1 best solutions below

1
On

Lets say we have a funktion $f(x) = -(x-2)^2 + 3$, which has a global maximum at $x_0=2$ with $f(x_0)=3$.

This means that $\max(f) = 3$. $\arg\!\max$ answers not how high the maximum is, but where it occurs: $\arg\!\max(f) = 2$.

Note that $f(\arg\!\max(f)) = \max(f)$.