org.apache.mahout.classifier.sgd

Interface Gradient

All Known Implementing Classes:

DefaultGradient, MixedGradient, RankingGradient

public interface Gradient

Provides the ability to inject a gradient into the SGD logistic regresion. Typical uses of this are to use a ranking score such as AUC instead of a normal loss function.

Method Summary

Modifier and Type	Method and Description
Vector	apply(String groupKey, int actual, Vector instance, AbstractVectorClassifier classifier)

Method Detail

apply

Vector apply(String groupKey,
             int actual,
             Vector instance,
             AbstractVectorClassifier classifier)