public static Design Crossover(Design d, List<Design> seeds)
{
Design crossed = d.DesignClone();
// if no parents are selected, crossover does not occur
if (seeds == null || seeds.Count == 0)
{
return crossed;
}
// otherwise, return a crossover of all the parent seeds
else
{
for (int i = 0; i < d.DesignVariables.Count; i++)
{
DesignVar var = crossed.DesignVariables[i];
List<DesignVar> seedvars = new List<DesignVar>();
foreach (Design s in seeds)
{
seedvars.Add(s.DesignVariables[i]);
}
var.Crossover(seedvars);
}
return crossed;
}
}
public static Design GenerateDesign(Design myFirstDesign, List<Design> seeds, IContinuousDistribution dist, double rate)
{
// generate new design through crossover of parent seeds
Design copy = myFirstDesign.DesignClone();
Design design = Crossover(copy, seeds);
// mutate new structure
Design newDesign= Mutate(design, dist, rate);
return newDesign;
}
public static List<Design> NewGeneration(Design myFirstDesign, List<Design> seeds, IContinuousDistribution dist, int popsize, double rate)
{
// generate new generation
List<Design> Designs = new List<Design>();
int count = 0;
while (count < popsize)
{
// generate random new design
Design randDesign = GenerateDesign( myFirstDesign, seeds, dist, rate);
count++;
Designs.Add(randDesign.DesignClone());
}
return Designs;
}
public static Design Mutate(Design d, IContinuousDistribution dist, double rate)
{
Design copy = d.DesignClone();
List<DesignVar> newdvars = new List<DesignVar>();
// loop over all the design variables
foreach (DesignVar var in copy.DesignVariables)
{
DesignVar varcopy = var.VarClone();
varcopy.Mutate(rate, dist);
varcopy.FixConstraint();
newdvars.Add(varcopy);
}
copy.DesignVariables = newdvars;
return copy;
}