func Test_sus01(tst *testing.T) {
//verbose()
chk.PrintTitle("sus01. stochastic-universal-sampling")
f := []float64{2.0, 1.8, 1.6, 1.4, 1.2, 1.0, 0.8, 0.6, 0.4, 0.2, 0.0}
n := len(f)
p := make([]float64, n)
sum := la.VecAccum(f)
for i := 0; i < n; i++ {
p[i] = f[i] / sum
}
cs := make([]float64, len(p))
utl.CumSum(cs, p)
selinds := make([]int, 6)
SUSselect(selinds, cs, 0.1)
io.Pforan("selinds = %v\n", selinds)
chk.Ints(tst, "selinds", selinds, []int{0, 1, 2, 3, 5, 7})
}
func Test_rws01(tst *testing.T) {
//verbose()
chk.PrintTitle("rws01. roulette whell selection")
f := []float64{2.0, 1.8, 1.6, 1.4, 1.2, 1.0, 0.8, 0.6, 0.4, 0.2, 0.0}
n := len(f)
p := make([]float64, n)
sum := la.VecAccum(f)
for i := 0; i < n; i++ {
p[i] = f[i] / sum
}
cs := make([]float64, len(p))
utl.CumSum(cs, p)
selinds := make([]int, 6)
RouletteSelect(selinds, cs, []float64{0.81, 0.32, 0.96, 0.01, 0.65, 0.42})
io.Pforan("selinds = %v\n", selinds)
chk.Ints(tst, "selinds", selinds, []int{5, 1, 8, 0, 4, 2})
}
