a set of C++ library classes
for neural networks development



Look-up tables

Look-up tables for MLP activation functions
o (*act_func)
o sigmoid_init
Initialization of sigmoid function
o sigmoid
Output of sigmoid on input x
o d_sigmoid
Output of sigmoid derivative on input x
o inverse_sigmoid
Output of the inverse of sigmoid on input x
o tanhyp_init
Initialization of hyperbolic tangent function
o tanhyp
Output of hyperbolic tangent function on input x
o d_tanhyp
Output of hyperbolic tangent derivative on input x
o NO_identity
Output of linear activation function on input x
o NO_d_identity
Output of linear activation derivative on input x
Activation function are stored as look-up table to speed-up computation. Sigmoid, hyperbolic tangent and linear activation functions a re available.

Alphabetic index Hierarchy of classes


Last Updated February 2001
For comments and suggestions mail to Giorgio Valentini