public List <ValueTuple <int, int, int> > BuildHiddenSet()
{
var rows = new List <ValueTuple <int, int, int> >();
for (int i = 0; i < 200; i++)
{
var x = RndGenerator.RndInt32(0, 40);
var y = RndGenerator.RndInt32(0, 40);
rows.Add((x, y, HiddenFunction(x, y)));
}
return(rows);
}
public Expression CrossOver(Expression t1, Expression t2, double probswap = 0.7, bool top = true)
{
if (RndGenerator.RndDouble() < probswap && !top)
{
return(t2);
}
var result = t1;
var childrenExpsT1 = GetChildren(t1);
var childrenExpsT2 = GetChildren(t2);
if (childrenExpsT1 == null || childrenExpsT2 == null)
{
return(result);
}
var newChildren = new List <Expression>();
foreach (var expression in childrenExpsT1)
{
newChildren.Add(CrossOver(expression, childrenExpsT2[RndGenerator.RndInt32(0, childrenExpsT2.Count)], probswap, false));
}
return(UpdateChildren(result, newChildren));
}
public static Expression MakeRandomTree(ParameterExpression[] paramExps, int maxTreeDepth = 4,
double fpr = 0.5, double ppr = 0.6)
{
if (RndGenerator.RndDouble() < fpr && maxTreeDepth > 0)
{
(var funcExp, var pc) = ExpFactory.Choice();
var children = new Expression[pc];
for (int i = 0; i < pc; i++)
{
children[i] = MakeRandomTree(paramExps, maxTreeDepth - 1, fpr, ppr);
}
return(funcExp(children));
}
else if (RndGenerator.RndDouble() < ppr)
{
return(paramExps[RndGenerator.RndInt32(0, paramExps.Length)]);
}
else
{
return(Expression.Constant(RndGenerator.RndInt32(0, 10)));
}
}