public static void AdalineTreshold(
double start,
double end,
double step,
int repetitions,
double learningRate,
double weightsLimit,
int inputsCount,
bool verbose = false)
{
if (start > end || step > Math.Abs(end - start) || step == 0)
{
throw new ArgumentException();
}
CsvPrinter.DumpParams(
new KeyValuePair <string, object>("start", start),
new KeyValuePair <string, object>("end", end),
new KeyValuePair <string, object>("step", step),
new KeyValuePair <string, object>("repetitions", repetitions),
new KeyValuePair <string, object>("weightsLimit", weightsLimit),
new KeyValuePair <string, object>("learningRate", learningRate),
new KeyValuePair <string, object>("inputsCount", inputsCount),
new KeyValuePair <string, object>("verbose", verbose)
);
CsvPrinter.DumpHeaderLine("n", "adaline threshold", "min epochs", "max epochs", "avg epochs", "final error");
int experimentIndex = 0;
for (double adalineThreshold = start; adalineThreshold <= end; adalineThreshold += step)
{
experimentIndex++;
var minEpochs = int.MaxValue;
var epochsSum = 0;
var maxEpochs = 0;
var run = 0;
Perceptron p = null;
if (verbose)
{
ConsoleHelper.WriteYellowLine($"Experiment - {experimentIndex}");
}
try
{
for (int j = 0; j < repetitions; j++)
{
run++;
p = PerceptronTrainer.CreatePerceptron(learningRate, weightsLimit, inputsCount, StepFunction.Bipolar, true);
var epochs = PerceptronTrainer.TrainPerceptron_And(p, adalineThreshold, verbose);
if (epochs < minEpochs)
{
minEpochs = epochs;
}
if (epochs > maxEpochs)
{
maxEpochs = epochs;
}
epochsSum += epochs;
}
}
catch (PerceptronLearnException)
{
if (verbose)
{
ConsoleHelper.WriteErrorLine("Perceptron can't learn with params:");
}
p?.Dump();
}
var avarageEpochs = epochsSum / run;
var currentError = PerceptronTrainer.GetAdalineError(p);
CsvPrinter.DumpLine(experimentIndex, adalineThreshold, minEpochs, maxEpochs, avarageEpochs, currentError);
}
}
public static void WeightsRange(
double start,
double end,
double step,
int repetitions,
double learningRate,
StepFunction stepFunction,
int inputsCount,
bool useAdaline = false,
double adalineThreshold = 1,
bool verbose = false
)
{
if (start > end || step > Math.Abs(end - start) || step == 0)
{
throw new ArgumentException();
}
CsvPrinter.DumpParams(
new KeyValuePair <string, object>("start", start),
new KeyValuePair <string, object>("end", end),
new KeyValuePair <string, object>("step", step),
new KeyValuePair <string, object>("repetitions", repetitions),
new KeyValuePair <string, object>("learningRate", learningRate),
new KeyValuePair <string, object>("stepFunction", stepFunction),
new KeyValuePair <string, object>("inputsCount", inputsCount),
new KeyValuePair <string, object>("useAdalvine", useAdaline),
new KeyValuePair <string, object>("adalineThreshold", adalineThreshold),
new KeyValuePair <string, object>("verbose", verbose)
);
CsvPrinter.DumpHeaderLine("n", "initial weights limit", "min epochs", "max epochs", "avg epochs");
int experimentIndex = 0;
for (double weightsLimit = start; weightsLimit <= end; weightsLimit += step)
{
experimentIndex++;
var minEpochs = int.MaxValue;
var epochsSum = 0;
var maxEpochs = 0;
var run = 0;
Perceptron p = null;
if (verbose)
{
ConsoleHelper.WriteYellowLine($"Experiment - {experimentIndex}");
}
for (int j = 0; j < repetitions; j++)
{
run++;
p = PerceptronTrainer.CreatePerceptron(learningRate, weightsLimit, inputsCount, stepFunction, useAdaline);
var epochs = PerceptronTrainer.TrainPerceptron_And(p, adalineThreshold, verbose);
if (epochs < minEpochs)
{
minEpochs = epochs;
}
if (epochs > maxEpochs)
{
maxEpochs = epochs;
}
epochsSum += epochs;
}
var avarageEpochs = epochsSum / run;
CsvPrinter.DumpLine(experimentIndex, weightsLimit, minEpochs, maxEpochs, avarageEpochs);
}
}
public static int TrainPerceptron_And(
Perceptron perceptron,
double adalineThreshold = 1,
bool verbose = false,
bool dumpData = false
)
{
bool isTrained = false;
int epoch = 0;
if (perceptron.IsAdaline)
{
if (verbose)
{
ConsoleHelper.WriteYellowLine($"Using adaline, error treshold - {adalineThreshold}");
}
double errorSum;
do
{
epoch++;
errorSum = 0;
if (verbose)
{
ConsoleHelper.WriteYellow($"Learning epoch - {epoch}");
}
foreach (var trainObject in andTraingData.Shuffle())
{
errorSum += Math.Pow(perceptron.Train(trainObject), 2);
}
errorSum /= andTraingData.Count;
if (verbose)
{
ConsoleHelper.WriteLine($" current error - {errorSum}");
}
if (dumpData)
{
CsvPrinter.DumpLine(epoch, errorSum);
}
if (epoch <= MaximumEpochs)
{
continue;
}
if (verbose)
{
ConsoleHelper.WriteErrorLine("Stopping!");
ConsoleHelper.WriteErrorLine("Did not learn nothing in 10000 epochs!");
ConsoleHelper.WriteErrorLine($"Using adaline, current values: error-{errorSum} > threshold-{adalineThreshold}");
}
return(0);
}while (errorSum > adalineThreshold);
}
else
{
while (!isTrained)
{
epoch++;
if (verbose)
{
ConsoleHelper.WriteLine($"Learning epoch - {epoch}");
}
double errorSum = 0;
errorSum = 0;
foreach (var trainObject in andTraingData)
{
var error = Math.Abs(perceptron.Train(trainObject));
errorSum += error;
}
if (Math.Abs(errorSum) < 0.000001)
{
isTrained = true;
}
if (dumpData)
{
CsvPrinter.DumpLine(epoch, errorSum);
}
if (epoch <= MaximumEpochs)
{
continue;
}
if (verbose)
{
ConsoleHelper.WriteErrorLine("Stopping!");
ConsoleHelper.WriteErrorLine("Did not learn nothing in 10000 epochs!");
}
return(0);
}
}
return(epoch);
}