Prime-Time: Symbolic Regression Takes Its Place in the Real World 255
Fig. 9 Response plot explorer for the cumulative clinical attack rate. An interactive version of this
plot is available atwww.idm.uantwerpen.be
feature selection of SR, this parameter appears to be unimportant to predict the AR
(Stijven et al. 2011 ). The response plot for the AR (Fig. 10 a) shows that the number
of infected people seeded into the population had almost no impact when seeding
once. Only very low numbers of seeded individuals resulted in a different AR. The
impact of the seeding number on the AR increased with daily seeding. We observed
a correlation of 60 % between the AR and the seeding number and frequency though
we expected a major role for R 0.
The day of the epidemic peak advanced logarithmically with an increasing
number of infected seeds, although small numbers of seeds could give rise to no