
differential that is often useful when fitness values become bunched to-
gether near 1.0 late in a GA run.
The next-to-last item in the run file (0) allows a change in mutation
rate if the variance of the fitness values drops below 0.05. This change
can be in addition to (on top of, so to speak) the change caused by mutat-
ing according to bit position, if it is enabled. If this option is disabled (0),
no change in mutation rate is triggered by a low variance value. If it is
enabled, the mutation rate m
lv
is increased for low variance values, ac-
cording to the following equation, where m
prev
is the previous (exist-
ing) mutation rate, modified by bit position ...