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https://github.com/augustin64/projet-tipe
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Add mean squared error (MSE)
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@ -53,11 +53,11 @@ void forward_propagation(Network* network) {
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output_width = network->width[i+1];
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output_width = network->width[i+1];
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activation = k_i->activation;
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activation = k_i->activation;
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if (k_i->cnn!=NULL) { // Convolution
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if (k_i->cnn) { // Convolution
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make_convolution(k_i->cnn, input, output, output_width);
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make_convolution(k_i->cnn, input, output, output_width);
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choose_apply_function_matrix(activation, output, output_depth, output_width);
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choose_apply_function_matrix(activation, output, output_depth, output_width);
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}
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}
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else if (k_i->nn!=NULL) { // Full connection
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else if (k_i->nn) { // Full connection
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if (input_depth==1) { // Vecteur -> Vecteur
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if (input_depth==1) { // Vecteur -> Vecteur
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make_dense(k_i->nn, input[0][0], output[0][0], input_width, output_width);
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make_dense(k_i->nn, input[0][0], output[0][0], input_width, output_width);
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} else { // Matrice -> vecteur
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} else { // Matrice -> vecteur
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@ -80,7 +80,7 @@ void backward_propagation(Network* network, float wanted_number) {
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printf_warning("Appel de backward_propagation, incomplet\n");
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printf_warning("Appel de backward_propagation, incomplet\n");
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float* wanted_output = generate_wanted_output(wanted_number);
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float* wanted_output = generate_wanted_output(wanted_number);
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int n = network->size;
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int n = network->size;
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float loss = compute_cross_entropy_loss(network->input[n][0][0], wanted_output, network->width[n]);
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float loss = compute_mean_squared_error(network->input[n][0][0], wanted_output, network->width[n]);
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int activation, input_depth, input_width, output_depth, output_width;
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int activation, input_depth, input_width, output_depth, output_width;
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float*** input;
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float*** input;
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float*** output;
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float*** output;
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@ -106,6 +106,18 @@ void backward_propagation(Network* network, float wanted_number) {
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free(wanted_output);
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free(wanted_output);
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}
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}
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float compute_mean_squared_error(float* output, float* wanted_output, int len) {
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if (len==0) {
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printf("Erreur MSE: la longueur de la sortie est de 0 -> division par 0 impossible\n");
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return 0.;
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}
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float loss=0.;
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for (int i=0; i < len ; i++) {
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loss += (output[i]-wanted_output[i])*(output[i]-wanted_output[i]);
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}
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return loss/len;
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}
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float compute_cross_entropy_loss(float* output, float* wanted_output, int len) {
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float compute_cross_entropy_loss(float* output, float* wanted_output, int len) {
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float loss=0.;
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float loss=0.;
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for (int i=0; i < len ; i++) {
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for (int i=0; i < len ; i++) {
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@ -7,12 +7,12 @@
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/*
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/*
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* Renvoie si oui ou non (1 ou 0) le neurone va être abandonné
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* Renvoie si oui ou non (1 ou 0) le neurone va être abandonné
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*/
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*/
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int will_be_drop(int dropout_prob); //CHECKED
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int will_be_drop(int dropout_prob);
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/*
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/*
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* Écrit une image 28*28 au centre d'un tableau 32*32 et met à 0 le reste
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* Écrit une image 28*28 au centre d'un tableau 32*32 et met à 0 le reste
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*/
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*/
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void write_image_in_network_32(int** image, int height, int width, float** input); //CHECKED
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void write_image_in_network_32(int** image, int height, int width, float** input);
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/*
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/*
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* Propage en avant le cnn
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* Propage en avant le cnn
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@ -22,10 +22,15 @@ void forward_propagation(Network* network);
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/*
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/*
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* Propage en arrière le cnn
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* Propage en arrière le cnn
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*/
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*/
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void backward_propagation(Network* network, float wanted_number); // TODO
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void backward_propagation(Network* network, float wanted_number);
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/*
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/*
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* Renvoie l'erreur du réseau neuronal pour une sortie
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* Renvoie l'erreur du réseau neuronal pour une sortie (RMS)
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*/
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float compute_mean_squared_error(float* output, float* wanted_output, int len);
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/*
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* Renvoie l'erreur du réseau neuronal pour une sortie (CEL)
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*/
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*/
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float compute_cross_entropy_loss(float* output, float* wanted_output, int len);
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float compute_cross_entropy_loss(float* output, float* wanted_output, int len);
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