Multilayer neuron network

2026-09-08 16:29:02 +02:00
parent 2f4db07918
commit 08aa04fe56
17 changed files with 630 additions and 50 deletions
@@ -25,7 +25,7 @@ class NetworkPerceptron extends Perceptron
        }

        // Hidden Layer
-        for ($layerIndex = 0; $layerIndex < count($synaptic_weights) - 2; $layerIndex++) {
+        for ($layerIndex = 0; $layerIndex < count($synaptic_weights) - 1; $layerIndex++) {
            $this->network[$layerIndex + 1] = [];

            foreach ($synaptic_weights[$layerIndex] as $neuronWeights) {
@@ -0,0 +1,13 @@
+<?php
+
+namespace App\Models\Perceptrons;
+
+class SigmoidPerceptron extends Perceptron
+{
+    public function activationFunction(float $weighted_sum): float
+    {
+        $weighted_sum = max(-40, min(40, $weighted_sum));
+
+        return 1 / (1 + exp(-$weighted_sum));
+    }
+}