org.maochen.nlp.ml.classifier.perceptron

Class PerceptronClassifier

java.lang.Object

org.maochen.nlp.ml.classifier.perceptron.PerceptronClassifier

All Implemented Interfaces:

org.maochen.nlp.ml.IClassifier

public class PerceptronClassifier
extends Object
implements org.maochen.nlp.ml.IClassifier

Created by Maochen on 6/5/15.

Field Summary

Fields

Modifier and Type	Field and Description
protected PerceptronModel	model

Constructor Summary

Constructors

Constructor and Description
PerceptronClassifier()

Method Summary

Modifier and Type	Method and Description
void	loadModel(InputStream inputStream)
void	onlineTrain(double[] x, int labelIndex) public use for doing one training sample.
void	persistModel(String modelFile)
Map<String,Double>	predict(org.maochen.nlp.ml.Tuple predict) Do a prediction.
void	setParameter(Properties props)
org.maochen.nlp.ml.IClassifier	train(List<org.maochen.nlp.ml.Tuple> trainingData)

Methods inherited from class java.lang.Object

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

Field Detail

model

protected PerceptronModel model

Constructor Detail

PerceptronClassifier

public PerceptronClassifier()

Method Detail

onlineTrain

public void onlineTrain(double[] x,
                        int labelIndex)

public use for doing one training sample.

Parameters:

x - Feature Vector

labelIndex - label's index, from PerceptronModel.LabelIndexer

train

public org.maochen.nlp.ml.IClassifier train(List<org.maochen.nlp.ml.Tuple> trainingData)

Specified by:

train in interface org.maochen.nlp.ml.IClassifier

predict

public Map<String,Double> predict(org.maochen.nlp.ml.Tuple predict)

Do a prediction.

Specified by:

predict in interface org.maochen.nlp.ml.IClassifier

Parameters:

predict - predict tuple.

Returns:

Map's key is the actual label, Value is probability, the probability is random depends on the order of training sample.

setParameter

public void setParameter(Properties props)

Specified by:

setParameter in interface org.maochen.nlp.ml.IClassifier

persistModel

public void persistModel(String modelFile)
                  throws IOException

Specified by:

persistModel in interface org.maochen.nlp.ml.IClassifier

Throws:

IOException

loadModel

public void loadModel(InputStream inputStream)

Specified by:

loadModel in interface org.maochen.nlp.ml.IClassifier