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Working net, calculates the mean value of two inputs

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This commit is contained in:
Michael Mandl 2015-10-23 22:16:12 +02:00
parent 6ed30e56c4
commit 4eb232b1e9
2 changed files with 28 additions and 7 deletions
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4
Layer.cpp
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@ -46,13 +46,13 @@ void Layer::connectTo(const Layer & nextLayer)
{
for (Neuron &neuron : *this)
{
neuron.createOutputWeights(nextLayer.sizeWithoutBiasNeuron(), 0.5);
neuron.createOutputWeights(nextLayer.sizeWithoutBiasNeuron(), 1.0);
}
}
void Layer::updateInputWeights(Layer & prevLayer)
{
static const double trainingRate = 0.2;
static const double trainingRate = 0.3;
for (size_t targetLayerIndex = 0; targetLayerIndex < sizeWithoutBiasNeuron(); ++targetLayerIndex)
{

29
Neuro.cpp
View file

@ -2,8 +2,12 @@
#include <exception>
#include <algorithm>
#include <assert.h>
#include "Net.h"
const double pi = std::acos(-1);
int main()
{
try
@ -12,7 +16,12 @@ int main()
Net myNet({ 2, 3, 1 });
size_t numIterations = 10000;
size_t batchSize = 5000;
size_t batchIndex = 0;
double batchMaxError = 0.0;
double batchMeanError = 0.0;
size_t numIterations = 1000000;
for (size_t iteration = 0; iteration < numIterations; ++iteration)
{
std::vector<double> inputValues =
@ -23,7 +32,7 @@ int main()
std::vector<double> targetValues =
{
*std::max_element(inputValues.begin(), inputValues.end())
(inputValues[0] + inputValues[1]) / 2.0
};
myNet.feedForward(inputValues);
@ -32,10 +41,22 @@ int main()
double error = outputValues[0] - targetValues[0];
std::cout << "Error: ";
std::cout << std::abs(error);
batchMeanError += error;
batchMaxError = std::max<double>(batchMaxError, error);
if (batchIndex++ == batchSize)
{
std::cout << "Batch error (" << batchSize << " iterations, max/mean): ";
std::cout << std::abs(batchMaxError);
std::cout << " / ";
std::cout << std::abs(batchMeanError / batchSize);
std::cout << std::endl;
batchIndex = 0;
batchMaxError = 0.0;
batchMeanError = 0.0;
}
myNet.backProp(targetValues);
}
}