Constructor and Description |
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DefaultGradient() |
Modifier and Type | Method and Description |
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Vector |
apply(String groupKey,
int actual,
Vector instance,
AbstractVectorClassifier classifier)
Provides a default gradient computation useful for logistic regression.
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public final Vector apply(String groupKey, int actual, Vector instance, AbstractVectorClassifier classifier)
apply
in interface Gradient
groupKey
- A grouping key to allow per-something AUC loss to be used for training.actual
- The target variable value.instance
- The current feature vector to use for gradient computationclassifier
- The classifier that can compute scoresCopyright © 2008–2017 The Apache Software Foundation. All rights reserved.