Nothing
## -----------------------------------------------------------------------------
library(sigmoid)
sigmoid(3)
## -----------------------------------------------------------------------------
sigmoid(-5:5)
sigmoid( matrix(-3:5,nrow=3) ) # etc.
## -----------------------------------------------------------------------------
sigmoid( -5:5, method='Gompertz' )
## -----------------------------------------------------------------------------
Gompertz(-1:-5)
## -----------------------------------------------------------------------------
sigmoid( -5:5, method='ReLU')
## -----------------------------------------------------------------------------
sigmoid( -5:5, method="leakyReLU")
## ----sigmoid-shape------------------------------------------------------------
library(ggplot2)
input = -5:5
df = data.frame(input, logistic(input), Gompertz(input))
ggplot(df, aes(input, logistic(input))) + geom_line() +
geom_line(aes(input,Gompertz(input)), colour='red')
## -----------------------------------------------------------------------------
sigmoid( sigmoid(-5:5), inverse=TRUE )
## -----------------------------------------------------------------------------
sigmoid( sigmoid(-5:5, method='Gompertz'), method='Gompertz', inverse=TRUE )
## ---- results='hold'----------------------------------------------------------
sigmoid( -3:5 )
sigmoid( -3:5, SoftMax = TRUE )
## ---- message=FALSE-----------------------------------------------------------
x = seq(1,5, by=0.05)
qplot(sigmoid(x))
qplot( sigmoid(x, k=sd(x), x0=mean(x) ) )
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