//バッチで学習処理を行う
public static Real Train(FunctionStack functionStack, NdArray input, NdArray teach, LossFunction lossFunction, bool isUpdate = true)
{
//結果の誤差保存用
NdArray[] result = functionStack.Forward(input);
Real sumLoss = lossFunction.Evaluate(result, teach);
//Backwardのバッチを実行
functionStack.Backward(result);
//更新
if (isUpdate)
{
functionStack.Update();
}
return(sumLoss);
}
//Perform learning process in batch
public static Real Train(FunctionStack functionStack, NdArray input, NdArray teach, LossFunction lossFunction, bool isUpdate = true)
{
//For preserving error of result
NdArray[] result = functionStack.Forward(input);
Real sumLoss = lossFunction.Evaluate(result, teach);
//Run Backward's batch
functionStack.Backward(result);
//update
if (isUpdate)
{
functionStack.Update();
}
return(sumLoss);
}
////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary> Do a learning process with a batch. </summary>
///
/// <param name="functionStack"> Stack of functions. This cannot be null. </param>
/// <param name="input"> The input. This may be null. </param>
/// <param name="teach"> The teach. This may be null. </param>
/// <param name="lossFunction"> The loss function. This cannot be null. </param>
/// <param name="isUpdate"> (Optional) True if this object is update. </param>
///
/// <returns> A Real. </returns>
////////////////////////////////////////////////////////////////////////////////////////////////////
public static Real Train([NotNull] SortedFunctionStack functionStack, [CanBeNull] NdArray input,
[CanBeNull] NdArray teach, [NotNull] LossFunction lossFunction, bool isUpdate = true,
bool verbose = true)
{
if (verbose)
{
RILogManager.Default?.EnterMethod("Training " + functionStack.Name);
}
// for preserving the error of the result
if (verbose)
{
RILogManager.Default?.SendDebug("Forward propagation");
}
NdArray[] result = functionStack.Forward(verbose, input);
if (verbose)
{
RILogManager.Default?.SendDebug("Evaluating loss");
}
Real sumLoss = lossFunction.Evaluate(result, teach);
// Run Backward batch
if (verbose)
{
RILogManager.Default?.SendDebug("Backward propagation");
}
functionStack.Backward(verbose, result);
if (isUpdate)
{
if (verbose)
{
RILogManager.Default?.SendDebug("Updating stack");
}
functionStack.Update();
}
if (verbose)
{
RILogManager.Default?.ExitMethod("Training " + functionStack.Name);
RILogManager.Default?.ViewerSendWatch("Local Loss", sumLoss.ToString(), sumLoss);
}
return(sumLoss);
}