void neuralNetworkTraining(std::string training_data_file)
{
/*
* Parameters for create_standard method.
*
* num_layers : The total number of layers including the input and the output layer.
* num_input_neurons : The number of neurons in the input layer.
* num_hidden_one_neurons : The number of neurons in the first hidden layer.
* num_hidden_two_neurons : The number of neurons in the second hidden layer.
* num_output_neurons : The number of neurons in the output layer.
*/
const unsigned int num_layers = 3;
const unsigned int num_input_neurons = 8;
const unsigned int num_hidden_neurons = 5;
const unsigned int num_output_neurons = 1;
/*
* Parameters for train_on_data method.
*
* desired_errors : The desired get_MSE or get_bit_fail, depending on which stop function is chosen by set_train_stop_function.
* max_epochs : The maximum number of epochs the training should continue.
* epochs_between_reports : The number of epochs between printing a status report to stdout. A value of zero means no reports should be printed.
*/
const float desired_error = DESIRED_ERROR;
const unsigned int max_epochs = MAX_EPOCHS;
const unsigned int epochs_between_reports = EPOCHS_BETWEEN_REPORTS;
FANN::neural_net net;
// Create a standard fully connected backpropagation neural network.
net.create_standard(num_layers, num_input_neurons, num_hidden_neurons, num_output_neurons);
net.set_activation_function_hidden(FANN::SIGMOID_SYMMETRIC_STEPWISE); // Set the activation function for all of the hidden layers.
net.set_activation_function_output(FANN::SIGMOID_SYMMETRIC_STEPWISE); // Set the activation function for the output layer.
net.set_training_algorithm(FANN::TRAIN_RPROP); // Set the training algorithm.
net.randomize_weights(-INIT_EPSILON, INIT_EPSILON); // Give each connection a random weight between -INIT_EPSILON and INIT_EPSILON.
std::cout << std::endl << "Network Type : ";
switch (net.get_network_type())
{
case FANN::LAYER:
std::cout << "LAYER" << std::endl;
break;
case FANN::SHORTCUT:
std::cout << "SHORTCUT" << std::endl;
break;
default:
std::cout << "UNKNOWN" << std::endl;
break;
}
net.print_parameters();
std::cout << std::endl << "Training Network." << std::endl;
FANN::training_data data;
if (data.read_train_from_file(training_data_file))
{
std::cout << "Max Epochs: " << std::setw(8) << max_epochs << ". " << "Desired Error: " << std::left << desired_error << std::right << std::endl;
net.set_callback(printCallback, NULL); // Sets the callback function for use during training.
net.train_on_data(data, max_epochs, epochs_between_reports, desired_error); // Trains on an entire dataset, for a period of time.
std::cout << "Saving Network." << std::endl;
net.save("neural_network_controller_float.net");
unsigned int decimal_point = net.save_to_fixed("neural_network_controller_fixed.net");
data.save_train_to_fixed("neural_network_controller_fixed.data", decimal_point);
}
}
void trainingThread::train()
{
std::stringstream log;
log << std::endl << " test started." << std::endl;
const float learning_rate = netConfigPTR->learning_rate ;
const unsigned int num_layers = netConfigPTR->num_layers;
const unsigned int num_input = netConfigPTR->num_input;
const unsigned int num_hidden = netConfigPTR->num_hidden;
const unsigned int num_output = netConfigPTR->num_output;
const float desired_error = netConfigPTR->desired_error;
const unsigned int max_iterations = netConfigPTR->max_iterations;
const unsigned int iterations_between_reports = netConfigPTR->iterations_between_reports;
log << std::endl << "Creating network." << std::endl;
FANN::neural_net net;
if (netConfigPTR->leyersVector.size() > 1)
{
unsigned int vectorSize = netConfigPTR->leyersVector.size();
unsigned int* leyers = new unsigned int[vectorSize+2];
leyers[0] = num_input;
for (unsigned int i = 0; i < vectorSize; ++i)
{
leyers[i+1] = netConfigPTR->leyersVector.at(i);
}
leyers[num_layers-1] = num_output;
for ( unsigned int i = 0 ; i< vectorSize+2 ; ++i)
{
qDebug() << "vector size: "<< vectorSize+2<<" i:"<<i<< " leyers "<< leyers[i];
}
net.create_standard_array(vectorSize+2, leyers);
//net.create_standard(vectorSize+2, leyers[0], leyers[2],leyers[3], leyers[1]);
delete[] leyers;
}
else
{
net.create_standard(num_layers, num_input, num_hidden, num_output);
}
net.set_learning_rate(learning_rate);
net.set_activation_steepness_hidden(1.0);
net.set_activation_steepness_output(1.0);
net.set_activation_function_hidden(FANN::SIGMOID_SYMMETRIC_STEPWISE);
net.set_activation_function_output(FANN::SIGMOID_SYMMETRIC_STEPWISE);
// Set additional properties such as the training algorithm
net.set_training_algorithm(netConfigPTR->trainingAlgo);
// Output network type and parameters
log << std::endl << "Network Type : ";
switch (net.get_network_type())
{
case FANN::LAYER:
log << "LAYER" << std::endl;
break;
case FANN::SHORTCUT:
log << "SHORTCUT" << std::endl;
break;
default:
log << "UNKNOWN" << std::endl;
break;
}
//net.print_parameters();
log << std::endl << "Training network." << std::endl;
FANN::training_data data;
if (data.read_train_from_file(netConfigPTR->trainingDataPatch))
{
// Initialize and train the network with the data
net.init_weights(data);
log << "Max Epochs " << std::setw(8) << max_iterations << ". "
<< "Desired Error: " << std::left << desired_error << std::right << std::endl;
emit updateLog(QString::fromStdString(log.str()));
log << "dupa";
log.str("");
log.clear();
net.set_callback(print_callback, nullptr);
net.train_on_data(data, max_iterations,
iterations_between_reports, desired_error);
log << std::endl << "Testing network." << std::endl;
for (unsigned int i = 0; i < data.length_train_data(); ++i)
{
// Run the network on the test data
fann_type *calc_out = net.run(data.get_input()[i]);
log << "test (";
for (unsigned int j = 0; j < num_input; ++j)
{
log << std::showpos << data.get_input()[i][j] << ", ";
//qDebug()<< "jestem w log<<";
}
log << ") -> " ;
for(unsigned int k = 0 ; k < num_output ; ++k)
{
log << calc_out[k] <<", ";
}
log << ",\t should be ";
for(unsigned int k = 0 ; k < num_output ; ++k)
{
log << data.get_output()[i][k] <<", ";
}
log << std::endl ;
}
log << std::endl << "Saving network." << std::endl;
// Save the network in floating point and fixed point
net.save(netConfigPTR->netFloat);
unsigned int decimal_point = net.save_to_fixed(netConfigPTR->netFixed);
std::string path = netConfigPTR->trainingDataPatch.substr(0,netConfigPTR->trainingDataPatch.size()-5);
data.save_train_to_fixed(path +"_fixed.data", decimal_point);
log << std::endl << "test completed." << std::endl;
emit updateLog(QString::fromStdString(log.str()));
emit updateProgressBar(100);
}
}