From d79bd87b73aa2709111f87006bdf7cfb3087c65f Mon Sep 17 00:00:00 2001
From: mirimatcode <mirimatcode@gmail.com>
Date: Sat, 1 Feb 2025 13:00:24 +0100
Subject: [PATCH] modifica formula multilayer mettendo i pesi di pout nel
 calcolo del gradiente e cambiando il segno del calcolo dell'errore

---
 layer_multi              | Bin 25768 -> 25768 bytes
 layer_multi.c            |  22 ++++++++++++----------
 layer_multi_addestrato   | Bin 21696 -> 21696 bytes
 layer_multi_addestrato.c |  14 +++++---------
 percettrone.h            |  10 +++++-----
 stampe_video.h           |   0
 6 files changed, 22 insertions(+), 24 deletions(-)
 delete mode 100644 stampe_video.h

diff --git a/layer_multi b/layer_multi
index bd2fa6c961a699f53150f63c324bf00cc97e67cd..824f3c4438a567b3a739e4eec9ff869aa72a883b 100755
GIT binary patch
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diff --git a/layer_multi.c b/layer_multi.c
index 1ee801a..b7ebbc6 100644
--- a/layer_multi.c
+++ b/layer_multi.c
@@ -13,7 +13,7 @@ int MAX_EPOCHE = 10000;
     4: NOR
     5: XNOR
 */
-int tipo = 0;
+int tipo = 2;
 
 void main()
 {
@@ -77,7 +77,8 @@ void main()
     Percettrone pout = crea_percettrone();
     int colore_blu = makecol(0, 0, 255);
 
-    p_ext_1.w1 = 1.332870;
+    //XOR
+    /* p_ext_1.w1 = 1.332870;
     p_ext_1.w2 = -0.628797;
     p_ext_1.bias = 0.729138;
 
@@ -87,7 +88,7 @@ void main()
 
     pout.w1 = -0.004388;
     pout.w2 = 0.090205;
-    pout.bias = -0.067931;
+    pout.bias = -0.067931; */
 
     // Contatore per fermare il percettrone, se vale 4 significa che ha indovinato tutte e 4 le combinazioni
     int corrette = 0;
@@ -135,7 +136,8 @@ void main()
             double y_ext_2 = funzione_sigmoide(p_ext_2, x[j][0], x[j][1]);
             double yout = funzione_sigmoide(pout, y_ext_1, y_ext_2);
 
-            double errore = -(output[j] - yout);
+            double errore = (output[j] - yout);
+
             int previsione = -1;
 
             if (yout >= soglia_funzione_attivazione)
@@ -158,15 +160,15 @@ void main()
             else
             {
                 // Gradienti percettrone 1
-                double gradiente_w1 = errore * yout * (1 - yout) * y_ext_1 * (1 - y_ext_1) * x[j][0];
-                double gradiente_w2 = errore * yout * (1 - yout) * y_ext_1 * (1 - y_ext_1) * x[j][1];
-                double gradiente_bias = errore * yout * (1 - yout) * y_ext_1 * (1 - y_ext_1);
+                double gradiente_w1 = errore * yout * (1 - yout) * y_ext_1 * (1 - y_ext_1) * x[j][0] * pout.w1;
+                double gradiente_w2 = errore * yout * (1 - yout) * y_ext_1 * (1 - y_ext_1) * x[j][1] * pout.w1;
+                double gradiente_bias = errore * yout * (1 - yout) * y_ext_1 * (1 - y_ext_1) * pout.w1;
                 correggi_pesi(&p_ext_1, gradiente_w1, gradiente_w2, gradiente_bias);
 
                 // Gradienti percettrone 2
-                gradiente_w1 = errore * yout * (1 - yout) * y_ext_2 * (1 - y_ext_2) * x[j][0];
-                gradiente_w2 = errore * yout * (1 - yout) * y_ext_2 * (1 - y_ext_2) * x[j][1];
-                gradiente_bias = errore * yout * (1 - yout) * y_ext_2 * (1 - y_ext_2);
+                gradiente_w1 = errore * yout * (1 - yout) * y_ext_2 * (1 - y_ext_2) * x[j][0] * pout.w2;
+                gradiente_w2 = errore * yout * (1 - yout) * y_ext_2 * (1 - y_ext_2) * x[j][1] * pout.w2;
+                gradiente_bias = errore * yout * (1 - yout) * y_ext_2 * (1 - y_ext_2) * pout.w2;
                 correggi_pesi(&p_ext_2, gradiente_w1, gradiente_w2, gradiente_bias);
 
                 // Gradienti percettrone out
diff --git a/layer_multi_addestrato b/layer_multi_addestrato
index 81a8b07ef7e8291d89f3f84b11f2c17bb7a4d992..e5cf3d5befd19bd4d65220a7d8d4bea1100a5b88 100755
GIT binary patch
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diff --git a/layer_multi_addestrato.c b/layer_multi_addestrato.c
index d26f079..5fccdbc 100644
--- a/layer_multi_addestrato.c
+++ b/layer_multi_addestrato.c
@@ -2,7 +2,7 @@
 #include "percettrone.h"
 #include "grafico.h"
 
-int MAX_TRY = 10000;
+int MAX_TRY = 500000;
 
 /*
     il tipo indica quali punti vogliamo disegnare nel grafico:
@@ -13,7 +13,7 @@ int MAX_TRY = 10000;
     4: NOR
     5: XNOR
 */
-int tipo = 0;
+int tipo = 2;
 
 // Soglia sigmoide
 double soglia_funzione_attivazione = 0.5;
@@ -26,7 +26,7 @@ void main()
 
     allegro_init();
     install_keyboard();
-    set_gfx_mode(GFX_AUTODETECT_WINDOWED, 800, 600, 0, 0);
+    set_gfx_mode(GFX_AUTODETECT_WINDOWED, 1920, 1080, 0, 0);
     cls(tipo, 1);
 
     int colore_rosso = makecol(255, 0, 0);
@@ -67,8 +67,8 @@ void main()
         //printf("\nCiclo %d\n", i);
 
         Punto input;
-        input.x = randomico();
-        input.y = randomico();
+        input.x = randomico_positivo();
+        input.y = randomico_positivo();
 
 
         double y_ext_1 = funzione_sigmoide(p_ext_1, input.x, input.y);
@@ -84,10 +84,6 @@ void main()
             previsione = 0;
         }
 
-        /* Punto output;
-        output.x = y_ext_1;
-        output.y = y_ext_2; */
-
         printf("Inputs: %f:%f -> previsione: %d\n", input.x, input.y, previsione);
 
         if (previsione == 1)
diff --git a/percettrone.h b/percettrone.h
index 9a0e24c..2a01e33 100644
--- a/percettrone.h
+++ b/percettrone.h
@@ -48,8 +48,8 @@ double randomico() {
 }
 
 double randomico_positivo() {
-     // Genero numeri nell'intervallo [0,1]
-     return ((double)(rand() % 101 * 0.01));
+     // Genero numeri nell'intervallo [-1,3]
+     return ((double)rand() / RAND_MAX) * 10.0f - 1.0f;
 }
 
 double funzione_sigmoide(Percettrone p, double x1, double x2) {
@@ -61,9 +61,9 @@ double funzione_sigmoide(Percettrone p, double x1, double x2) {
 }
 
 void correggi_pesi(Percettrone *p, double grad_w1, double grad_w2, double grad_bias) {
-    (*p).bias = (*p).bias - (grad_bias * (*p).lre);
-    (*p).w1 = (*p).w1 - (grad_w1 * (*p).lre);
-    (*p).w2 = (*p).w2 - (grad_w2 * (*p).lre);
+    (*p).bias = (*p).bias + (grad_bias * (*p).lre);
+    (*p).w1 = (*p).w1 + (grad_w1 * (*p).lre);
+    (*p).w2 = (*p).w2 + (grad_w2 * (*p).lre);
 }
 
 void stampa_layer_uno(Percettrone p, double y, int x1, int x2, double errore)
diff --git a/stampe_video.h b/stampe_video.h
deleted file mode 100644
index e69de29..0000000