6 Oct
2006
6 Oct
'06
9:39 a.m.
On Fri, 2006-10-06 at 10:04 +0100, John Maddock wrote:
how about sigmoid, double sigmoid and their derivatives? Used for neural networks.
Those are new ones to me.
Well, this not so strange. As far as I know, the term sigmoid does not describe a function but merely a family of functions of a similar shape (the actual equation is not so important). Eg 1+tanh(x). IMHO unless there is a more formal or accurate concept of what is a sigmoid, it should not be added to the library. Theo.