org.nd4j.autodiff.listeners.records

Class LossCurve

java.lang.Object

org.nd4j.autodiff.listeners.records.LossCurve

public class LossCurve
extends Object

Constructor Summary

Constructors

Modifier	Constructor and Description
	LossCurve(double[] lossValues, List<String> lossNames)
protected	LossCurve(INDArray lossValues, List<String> lossNames)
	LossCurve(List<Loss> losses)

Method Summary

Modifier and Type	Method and Description
LossCurve	addLossAndCopy(double[] values, List<String> lossNames) Return a new LossCurve with the given losses added on as the most recent epoch
LossCurve	addLossAndCopy(Loss loss) Return a new LossCurve with the given losses added on as the most recent epoch
Loss	lastMeanDelta() Return the loss delta between the last epoch and the one before it.
double	lastMeanDelta(SDVariable loss) Return the loss delta between the last epoch and the one before it, for a given variable.
double	lastMeanDelta(String lossName) Return the loss delta between the last epoch and the one before it, for a given variable.
Loss	lastMeanLoss() Get the mean loss for the last epoch.
float	lastMeanLoss(@NonNull SDVariable loss) Return the mean loss value for a given variable on the last epoch.
float	lastMeanLoss(@NonNull String lossName) Return the mean loss value for a given variable on the last epoch.
List<Loss>	losses()
Loss	meanLoss(int epoch) Get the mean loss for a given epoch If epoch is negative, counts backwards from the end.
float[]	meanLoss(@NonNull SDVariable loss) Return all mean loss values for a given variable
float	meanLoss(@NonNull SDVariable loss, int epoch) Return the mean loss value for a given variable on a given epoch.
float[]	meanLoss(@NonNull String lossName) Return all mean loss values for a given variable
float	meanLoss(@NonNull String lossName, int epoch) Return the mean loss value for a given variable on a given epoch.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LossCurve

public LossCurve(List<Loss> losses)

LossCurve

public LossCurve(double[] lossValues,
                 List<String> lossNames)

LossCurve

protected LossCurve(INDArray lossValues,
                    List<String> lossNames)

Method Detail

losses

public List<Loss> losses()

meanLoss

public Loss meanLoss(int epoch)

Get the mean loss for a given epoch If epoch is negative, counts backwards from the end. E.g. losses(-1) gets the last epoch.

Parameters:

epoch - The epoch to get. If negative, returns results for the epoch that many epochs from the end

lastMeanLoss

public Loss lastMeanLoss()

Get the mean loss for the last epoch.

meanLoss

public float[] meanLoss(@NonNull
                        @NonNull String lossName)

Return all mean loss values for a given variable

meanLoss

public float[] meanLoss(@NonNull
                        @NonNull SDVariable loss)

Return all mean loss values for a given variable

meanLoss

public float meanLoss(@NonNull
                      @NonNull String lossName,
                      int epoch)

Return the mean loss value for a given variable on a given epoch. See meanLoss(int)

meanLoss

public float meanLoss(@NonNull
                      @NonNull SDVariable loss,
                      int epoch)

Return the mean loss value for a given variable on a given epoch. See meanLoss(int)

lastMeanLoss

public float lastMeanLoss(@NonNull
                          @NonNull String lossName)

Return the mean loss value for a given variable on the last epoch.

lastMeanLoss

public float lastMeanLoss(@NonNull
                          @NonNull SDVariable loss)

Return the mean loss value for a given variable on the last epoch.

lastMeanDelta

public Loss lastMeanDelta()

Return the loss delta between the last epoch and the one before it. Equivalent to meanLoss(-1) - meanLoss(-2). A positive delta means the loss is increasing, and a negative delta means it is decreasing.

lastMeanDelta

public double lastMeanDelta(String lossName)

Return the loss delta between the last epoch and the one before it, for a given variable. Equivalent to meanLoss(-1) - meanLoss(-2). A positive delta means the loss is increasing, and a negative delta means it is decreasing.

lastMeanDelta

public double lastMeanDelta(SDVariable loss)

Return the loss delta between the last epoch and the one before it, for a given variable. Equivalent to meanLoss(-1) - meanLoss(-2). A positive delta means the loss is increasing, and a negative delta means it is decreasing.

addLossAndCopy

public LossCurve addLossAndCopy(Loss loss)

Return a new LossCurve with the given losses added on as the most recent epoch

addLossAndCopy

public LossCurve addLossAndCopy(double[] values,
                                List<String> lossNames)

Return a new LossCurve with the given losses added on as the most recent epoch