public Population(int size, IndividualDesc desc, ComputeDevice device, float[] dataSet, bool isTimeSeries, int seed = 0)
{
populationSize = size;
if (seed == 0)
{
randomGenerator = new Random();
}
else
{
randomGenerator = new Random(seed);
}
if (desc.Updated == false)
{
desc.UpdateProperties();
}
indDesc = desc;
usingTimeSeries = isTimeSeries;
genomeLength = indDesc.TotalWeights;
genotypes = new float[populationSize * genomeLength];
for (int i = 0; i < genotypes.Length; ++i)
{
genotypes[i] = Convert.ToSingle(randomGenerator.NextDouble()) * 2 - 1;
}
phenotypes = new Individual[populationSize];
for (int i = 0; i < phenotypes.Length; ++i)
{
phenotypes[i].Fitness = 0;
phenotypes[i].Offset = i * genomeLength;
}
inputData = dataSet;
computeDevice = device;
maxFitness = -float.MaxValue;
avgFitness = 0.0f;
eliteRatio = 0.1f;
mutationRatio = 0.05f;
}
private void buildNetworkB_Click(object sender, EventArgs e)
{
if (!checkSelectedInputOutputCells())
{
return;
}
if (computeDeviceCB.SelectedIndex == -1)
{
MessageBox.Show("Пожалуйста, выберите устройство");
return;
}
IndividualDesc indDescTS = new IndividualDesc(selectedInputRows.Length / 2, 1);
optionsForm.GetStructure(out indDescTS.HiddenLayersSizes, out indDescTS.ForHidden, out indDescTS.ForOutput);
indDescTS.UpdateProperties();
IndividualDesc indDescDS = new IndividualDesc(selectedInputColumns.Length, selectedOutputColumns.Length);
optionsForm.GetStructure(out indDescDS.HiddenLayersSizes, out indDescDS.ForHidden, out indDescDS.ForOutput);
indDescDS.UpdateProperties();
MessageBox.Show("Количество весов: " + indDescTS.TotalWeights + " " + indDescDS.TotalWeights);
float[][] table;
float[][] predictionTable;
float[] dataSet;
float normalizationMin, normalizationMax;
optionsForm.GetDataOptions(out normalizationMin, out normalizationMax);
copyAndNormalizeDataFromDGV(normalizationMin, normalizationMax, out table, out minValues, out maxValues);
int setSize = selectedInputColumns.Length + selectedOutputColumns.Length;
int totalSets = selectedInputRows.Length;
dataSet = new float[setSize * totalSets];
for (int iRow = 0; iRow < totalSets; ++iRow)
{
for (int iCol = 0; iCol < setSize; ++iCol)
{
dataSet[iRow * setSize + iCol] = table[iCol][iRow];
}
}
dataFromFile.Clear();
dataFromNetwork.Clear();
graphCB.Items.Clear();
float avgError = 0.0f;
float[] errors = new float[selectedInputColumns.Length + 1];
float totalTime = 0.0f;
float[] seconds = new float[selectedInputColumns.Length + 1];
bool[] stagnationStop = new bool[selectedInputColumns.Length + 1];
predictionTable = new float[setSize][];
float[] predictedDataSet = null;
Population[] populations = new Population[selectedInputColumns.Length + 1];
device.Initialize(computeDeviceCB.SelectedIndex);
//device.SetWorkGroupSize(Convert.ToInt32(workGroupSizeNUD.Value));
Random random = new Random(Convert.ToInt32(seedNUD.Value));
float gpgpuTime = 0.0f;
for (int iPop = 0; iPop < populations.Length; ++iPop)
{
bool stopCondition = false;
float maxFitness = -float.MaxValue;
int epochs = 0;
int lastImprovement = 0;
int stagnationValue = Convert.ToInt32(stagnationTSNUD.Value);
float errorThreshold = Convert.ToSingle(errorThresholdTSNUD.Value);
if (iPop < selectedInputColumns.Length)
{
populations[iPop] = new Population(1024, indDescTS, device, table[iPop], true, random.Next());
}
else
{
populations[iPop] = new Population(1024, indDescDS, device, dataSet, false, random.Next());
//stagnationValue = Convert.ToInt32(stagnationDSNUD.Value);
//errorThreshold = Convert.ToSingle(errorThresholdDSNUD.Value);
}
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
while (!stopCondition)
{
++epochs;
populations[iPop].Epoch();
gpgpuTime += device.GetLastTimeResult();
float curFitness = populations[iPop].GetMaxFitness();
if (maxFitness < curFitness)
{
maxFitness = curFitness;
lastImprovement = epochs;
}
if (epochs > (lastImprovement + stagnationValue) || -curFitness < errorThreshold)
{
stagnationStop[iPop] = epochs > (lastImprovement + stagnationValue);
stopCondition = true;
}
}
seconds[iPop] = stopwatch.ElapsedMilliseconds / 1000.0f;
stopwatch.Stop();
if (iPop < selectedInputColumns.Length)
{
populations[iPop].PredictTimeSeries(Convert.ToInt32(predictionSizeNUD.Value));
predictionTable[iPop] = populations[iPop].GetOutputTimeSeries();
graphCB.Items.Add(inputOutputDGV.Columns[selectedInputColumns[iPop]].HeaderText);
dataFromFile.Add(table[iPop]);
dataFromNetwork.Add(predictionTable[iPop]);
}
else
{
if (predictedDataSet == null)
{
predictedDataSet = new float[Convert.ToInt32(predictionSizeNUD.Value) * setSize];
for (int iCol = 0; iCol < selectedInputColumns.Length; ++iCol)
{
for (int iRow = totalSets; iRow < predictionTable[iCol].Length; ++iRow)
{
predictedDataSet[(iRow - totalSets) * setSize + iCol] = predictionTable[iCol][iRow];
}
}
}
populations[iPop].PredictDataSet(predictedDataSet);
float[] predictedOutput = populations[iPop].GetOutputTimeSeries();
int preditedOutputColumnSize = predictedOutput.Length / selectedOutputColumns.Length;
for (int iCol = 0; iCol < selectedOutputColumns.Length; ++iCol)
{
float[] predictedOutputColumn = new float[preditedOutputColumnSize];
Array.Copy(predictedOutput, iCol * preditedOutputColumnSize, predictedOutputColumn, 0, preditedOutputColumnSize);
predictionTable[iPop + iCol] = predictedOutputColumn;
graphCB.Items.Add(inputOutputDGV.Columns[selectedOutputColumns[iCol]].HeaderText);
dataFromFile.Add(table[iPop + iCol]);
dataFromNetwork.Add(predictionTable[iPop + iCol]);
}
}
errors[iPop] = -maxFitness;
avgError += errors[iPop] / errors.Length;
totalTime += seconds[iPop];
}
// Записываем прогнозные данные в таблицу "Результат"
denormalizeAndCopyDataToDGV(predictionTable, normalizationMin, normalizationMax, minValues, maxValues);
foreach (DataGridViewColumn column in predictionDGV.Columns)
{
column.SortMode = DataGridViewColumnSortMode.NotSortable;
column.DefaultCellStyle.Format = "0.######";
}
// Вывод графиков
graphCB.SelectedIndex = 0;
tabControl1.SelectedIndex = 1;
resultMessage = "Ошибки факторов: \n";
int factorCount = selectedInputColumns.Length;
for (int i = 0; i < errors.Length; ++i)
{
resultMessage += (i < factorCount ? "Вход №" + (i + 1) :
"Вых. №" + (i - factorCount + 1)) + ": " + (i + 1 - (i < factorCount ? 0 : factorCount) < 10 ? "\t\t" : "\t")
+ errors[i].ToString("0.000") + " за " + seconds[i].ToString("0.000") + " сек. "
+ "(Достигнута " + (stagnationStop[i] ? "стагнация" : "ошибка") + ")\n";
}
resultMessage += "Средняя ошибка: \t" + avgError.ToString("0.000") + " за "
+ totalTime.ToString("0.000") + " сек.\n";
resultMessage += "Вычисления: " + gpgpuTime.ToString("0.000") + " сек.\n";
MessageBox.Show(resultMessage, "Результаты", MessageBoxButtons.OK, MessageBoxIcon.Information);
showResultMessageB.Enabled = true;
}