Create GPTGeneratedFitness.cs

SNP_Evolution/SNP_Evolution/GPTGeneratedFitness.cs

@@ -0,0 +1,61 @@
+private static float FitnessFunction(int index, Func<List<int>, List<int>, float> fitnessAlgorithm)
+{
+    DNA dna = ga.Population[index];
+    List<int> output = SNPRun(dna.Genes);
+    float fitness = fitnessAlgorithm(output, expectedSet);
+
+    if (fitness >= 0.985f && fitness <= 1f)
+    {
+        Console.WriteLine("Testing the best fitness for repeated success.");
+        if (TestBestNetwork(ga.BestGenes, ga.BestFitness))
+        {
+            Console.WriteLine("Fitness over 0.985, stopping . . .");
+            active = false;
+        }
+    }
+
+    return fitness;
+}
+
+private static float CalculateF1Score(List<int> output, List<int> expectedSet)
+{
+    if (output.Count == 0)
+    {
+        return 0;
+    }
+
+    int truePositives = expectedSet.Intersect(output).Count();
+    int falsePositives = output.Count - truePositives;
+
+    float sensitivity = (float)truePositives / expectedSet.Count;
+    float precision = (float)truePositives / (truePositives + falsePositives);
+
+    return 2f * ((precision * sensitivity) / (precision + sensitivity));
+}
+
+private static float CalculateJaccardIndex(List<int> output, List<int> expectedSet)
+{
+    if (output.Count == 0)
+    {
+        return 0;
+    }
+
+    return (float)expectedSet.Intersect(output).Count() / expectedSet.Union(output).Count();
+}
+
+private static float CalculateMatthewsCorrelationCoefficient(List<int> output, List<int> expectedSet)
+{
+    if (output.Count == 0)
+    {
+        return 0;
+    }
+
+    int truePositives = expectedSet.Intersect(output).Count();
+    int falsePositives = output.Count - truePositives;
+    int falseNegatives = expectedSet.Count - truePositives;
+
+    float numerator = (truePositives * truePositives) - (falsePositives * falseNegatives);
+    float denominator = (float)Math.Sqrt((truePositives + falsePositives) * (truePositives + falseNegatives) * (falsePositives + truePositives) * (falsePositives + falseNegatives));
+
+    return numerator / denominator;
+}