public OnlineTrainer(IErrorCalculator errorCalculator, ILearningProvider dataProvider, LearningAlgorithm learningAlgorithm)
{
ErrorCalculator = errorCalculator;
DataProvider = dataProvider;
LearningAlgorithm = learningAlgorithm;
tester = new NetworkTester(ErrorCalculator);
}
/// <summary>
/// Checks if new given network is better than current best. If it is, stores it as best.
/// </summary>
/// <param name="newNetwork"></param>
/// <returns>True if best network was changed. Otherwise, false</returns>
private bool UpdateBestNetwork(NeuralNetwork newNetwork)
{
var tester = new NetworkTester(ErrorCalculator);
if (BestNetwork is null) //save new network as best
{
BestNetwork = newNetwork;
BestTestError = tester.TestNetwork(BestNetwork, DataProvider);
return(true);
}
else // test new network and compare
{
var newNetworkError = tester.TestNetwork(newNetwork, DataProvider);
if (newNetworkError < BestTestError)
{
BestNetwork = newNetwork;
BestTestError = newNetworkError;
return(true);
}
else
{
return(false);
}
}
}