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  • 4 Post By skipjack
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October 20th, 2019, 03:00 AM   #1
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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
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I think it means that $f(x)$ is either -1 or 1, but I'd be more confident if I knew the full context.
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