Quickprop ( MSTJN(5)=3), which estimates the updating step
through eq. (
), has two learning parameters and
two control parameters. These are the ``learning rate'' PARJN(1)
(
), the sigmoid-prime addition PARJN(23) (
),
the maximum growth factor PARJN(21) and the maximum weight
magnitude PARJN(22). The latter is quite
unimportant. Default values recommended in [9] for the other
three parameters are; PARJN(1) of order unity, PARJN(23)= 0.1
and PARJN(21) = 1.75. We have not done extensive tests to to
determine the problem dependence of these parameters.
It is recommended to run QP using a small weight decay ( PARJN(5)).