Applies element-wise, $$SELU(x) = scale * (max(0,x) + min(0, \alpha * (exp(x) - 1)))$$, with \(\alpha=1.6732632423543772848170429916717\) and \(scale=1.0507009873554804934193349852946\).
Examples
if (torch_is_installed()) {
x <- torch_randn(2, 2)
y <- nnf_selu(x)
nnf_selu_(x)
torch_equal(x, y)
}
#> [1] TRUE