My Math Forum  

Go Back   My Math Forum > Math Forums > Math

Math General Math Forum - For general math related discussion and news


Thanks Tree4Thanks
  • 4 Post By skipjack
Reply
 
LinkBack Thread Tools Display Modes
October 20th, 2019, 03:00 AM   #1
Member
 
Joined: Dec 2018
From: Amsterdam

Posts: 38
Thanks: 2

What does this mean?

What does this sentence mean:

So if ${\cal X}$ is the input space and ${\cal W}$ the set of rules such that for $f\in {\cal W}$ and $x\in {\cal X}$ we have $f(x)\in \{-1,1\}$.


What does $f(x)\in \{-1,1\}$. mean here?
jenniferruurs is offline  
 
October 20th, 2019, 07:50 AM   #2
Global Moderator
 
Joined: Dec 2006

Posts: 21,105
Thanks: 2324

I think it means that $f(x)$ is either -1 or 1, but I'd be more confident if I knew the full context.
skipjack is offline  
Reply

  My Math Forum > Math Forums > Math



Thread Tools
Display Modes






Copyright © 2019 My Math Forum. All rights reserved.