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Add error function

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This commit is contained in:
Julien Chemillier 2022-04-12 18:28:19 +02:00
parent 63c2544b45
commit 92455a5335
1 changed files with 19 additions and 0 deletions
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19
src/mnist/neural_network.c
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@ -223,4 +223,23 @@ void initialisation_du_reseau_neuronal(Reseau* reseau) {
neurone->activation = borne_inferieure + ((double)rand())/((double)RAND_MAX)*(borne_superieure - borne_inferieure);
neurone->biais = borne_inferieure + ((double)rand())/((double)RAND_MAX)*(borne_superieure - borne_inferieure); // On initialise le biais aléatoirement
}
}
float erreur_sortie(Reseau* reseau, int numero_voulu){
/* Renvoie l'erreur du réseau neuronal pour une sortie */
float erreur = 0;
Couche* derniere_couche = reseau->couches[reseau->nb_couches-1];
for (int i=0; i < reseau->nb_couches-1; i++) {
if (i==numero_voulu) {
erreur += (1-derniere_couche->neurones[i]->z)*(1-derniere_couche->neurones[i]->z);
}
else {
erreur += derniere_couche->neurones[i]->z*derniere_couche->neurones[i]->z;
}
}
return erreur;
}