Softplus [\(0\) to \(+\infty\)]
Description
It is a smoothed version of ReLU, both ReLU and Softplus are similar, except near 0 where the softplus is smooth and differentiable.
Formula
\[ f(x) = \log(1 + e^x) \]
It is a smoothed version of ReLU, both ReLU and Softplus are similar, except near 0 where the softplus is smooth and differentiable.