genetic

commit c7452ccbad5e1a9b4f85bcd3c20287d2197413a0
parent 8f4c4c86c881b56dcc172adb0bf8319b2a39a976
Author: dracuxan <[email protected]>
Date:   Tue,  7 Apr 2026 12:23:59 +0530

example: portfolio optimization

Diffstat:
A
genetic/scripts/portfolio.exs
 | 
29
+++++++++++++++++++++++++++++

1 file changed, 29 insertions(+), 0 deletions(-)
diff --git a/genetic/scripts/portfolio.exs b/genetic/scripts/portfolio.exs
@@ -0,0 +1,29 @@
+defmodule Portfolio do
+  alias Types.Chromosome
+
+  @behaviour Problem
+  @target_fitness 180
+
+  @impl true
+  def genotype do
+    genes =
+      Enum.map(1..10, fn _ -> {:rand.uniform(10), :rand.uniform(10)} end)
+
+    %Chromosome{genes: genes, size: 10}
+  end
+
+  @impl true
+  def fitness_function(chromosome) do
+    chromosome.genes
+    |> Enum.map(fn {roi, risk} -> 2 * roi - risk end)
+    |> Enum.sum()
+  end
+
+  @impl true
+  def terminate?([best | _], _generation) do
+    best.fitness > @target_fitness
+  end
+end
+
+soln = Genetic.run(Portfolio)
+IO.puts("\nfinal answer: #{inspect(soln)}")