reranker::PerceptronModel::DefaultUpdater Class Reference

The default update function for perceptron models. More...

#include <perceptron-model.H>

Inheritance diagram for reranker::PerceptronModel::DefaultUpdater:

Additional Inherited Members
Public Member Functions inherited from reranker::FactoryConstructible
virtual	~FactoryConstructible ()
virtual void	RegisterInitializers (Initializers &initializers)
virtual void	Init (const Environment *env, const string &arg)

Detailed Description

The default update function for perceptron models.

The implementation here does the following operations:

1. Computes which features to update using the PerceptronModel::ComputeFeaturesToUpdate method.
2. Updates the gold and top-scoring candidate feature averages using the TrainingVectorSet::UpdateGoldAndCandidateFeatureAverages method.
3. Computes the step size using the PerceptronModel::ComputeStepSize method.
4. Updates weights, biasing the model toward the gold candidate’s features and away from the current top-scoring (but “incorrect”) candidate’s features, using the TrainingVectorSet::UpdateWeights method.

Definition at line 171 of file perceptron-model.H.

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The documentation for this class was generated from the following files:

• perceptron-model.H
• perceptron-model.C