func main() {
seed := time.Now().UTC().UnixNano()
rand.Seed(seed)
fmt.Println("Using seed:", seed)
// Test expr
// The initialization function creates a tree with specified max depth
// And it's a closure over the primitives
exprInit := func(maxDep int) *node.Node {
return node.MakeTreeHalfAndHalf(maxDep, expr.Functionals, expr.Terminals)
}
exprMutate := node.MakeSubtreeMutation(MAX_D, exprInit)
fmt.Println("Testing representation: expr")
exprErrorAvg, exprErrorVar := testRepr(exprInit, exprMutate, expr.Draw)
fmt.Println("expr error avg:", exprErrorAvg, "var:", exprErrorVar)
// Test ts
tsInit := func(maxDep int) *node.Node {
return node.MakeTreeHalfAndHalf(maxDep, ts.Functionals, ts.Terminals)
}
tsMutate := node.MakeSubtreeMutation(MAX_D, tsInit)
fmt.Println("Testing representation: TS")
tsErrorAvg, tsErrorVar := testRepr(tsInit, tsMutate, ts.Draw)
fmt.Println("TS error avg:", tsErrorAvg, "var:", tsErrorVar)
// Test vhs
vhsInit := func(maxDep int) *node.Node {
return node.MakeTreeHalfAndHalf(maxDep, vhs.Functionals, vhs.Terminals)
}
vhsMutate := node.MakeSubtreeMutation(MAX_D, vhsInit)
fmt.Println("Testing representation: VHS")
vhsErrorAvg, vhsErrorVar := testRepr(vhsInit, vhsMutate, vhs.Draw)
fmt.Println("VHS error avg:", vhsErrorAvg, "var:", vhsErrorVar)
}
func (c *Configuration) RandomSolution() hc.Solution {
n := node.MakeTreeHalfAndHalf(c.MaxDepth, c.Functionals, c.Terminals)
tmpImg := imgut.Create(c.ImgTarget.W, c.ImgTarget.H, c.ImgTarget.ColorSpace)
return &Solution{n, tmpImg, c}
}
func (s *Solution) Mutate() {
subtrMut := node.MakeSubtreeMutation(s.Conf.MaxDepth, func(maxDep int) *node.Node {
return node.MakeTreeHalfAndHalf(maxDep, s.Conf.Functionals, s.Conf.Terminals)
})
subtrMut(s.Node)
}