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3 votes
1 answer
714 views

numerically stable log1pexp calculation

What are good approximations for computing log1pexp for single precision and double precision floating point numbers? Note: log1pexp(x) is log(1 + exp(x)) I have found few implementations of log1pex …
Yashas's user avatar
  • 275
5 votes
5 answers
580 views

fast and stable x * tanh(log1pexp(x)) computation

$$f(x) = x \tanh(\log(1 + e^x))$$ The function (mish activation) can be easily implemented using a stable log1pexp without any significant loss of precision. Unfortunately, this is computationally he …
Yashas's user avatar
  • 275