Exemple #1
0
// SetFloat returns the float corresponding to gene 'i'
//  igene -- is the index of gene/float in [0, Nfltgenes]
func (o *Individual) SetFloat(igene int, x float64) {
	if o.Nbases > 1 {
		values := make([]float64, o.Nbases)
		rnd.Float64s(values, 0, 1)
		sum := la.VecAccum(values)
		for j := 0; j < o.Nbases; j++ {
			o.Floats[igene*o.Nbases+j] = x * values[j] / sum
		}
		return
	}
	o.Floats[igene] = x
}
Exemple #2
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// SimpleChromo splits 'genes' into 'nbases' unequal parts
//  Input:
//    genes  -- a slice whose size equals to the number of genes
//    nbases -- number of bases used to split 'genes'
//  Output:
//    chromo -- the chromosome
//
//  Example:
//
//    genes = [0, 1, 2, ... nbases-1,  0, 1, 2, ... nbases-1]
//             \___________________/   \___________________/
//                    gene # 0               gene # 1
//
func SimpleChromo(genes []float64, nbases int) (chromo []float64) {
	ngenes := len(genes)
	chromo = make([]float64, ngenes*nbases)
	values := make([]float64, nbases)
	var sumv float64
	for i, g := range genes {
		rnd.Float64s(values, 0, 1)
		sumv = la.VecAccum(values)
		for j := 0; j < nbases; j++ {
			chromo[i*nbases+j] = g * values[j] / sumv
		}
	}
	return
}