org.apache.ctakes.temporal.ae.feature.selection

Class ZscoreNormalizationExtractor<OUTCOME_T,FOCUS_T extends org.apache.uima.jcas.tcas.Annotation>

java.lang.Object

org.cleartk.ml.feature.transform.OneToOneTrainableExtractor_ImplBase<OUTCOME_T>

org.apache.ctakes.temporal.ae.feature.selection.ZscoreNormalizationExtractor<OUTCOME_T,FOCUS_T>

All Implemented Interfaces:

org.cleartk.ml.feature.transform.TrainableExtractor<OUTCOME_T>

public class ZscoreNormalizationExtractor<OUTCOME_T,FOCUS_T extends org.apache.uima.jcas.tcas.Annotation>
extends org.cleartk.ml.feature.transform.OneToOneTrainableExtractor_ImplBase<OUTCOME_T>

Use z-score to normalize every numerical feature

Author:

Chen Lin

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ZscoreNormalizationExtractor.ZscoreRunningStat

Field Summary

Fields inherited from class org.cleartk.ml.feature.transform.OneToOneTrainableExtractor_ImplBase

name

Constructor Summary

Constructors

Constructor and Description
ZscoreNormalizationExtractor(String name)

Method Summary

Modifier and Type	Method and Description
List<org.cleartk.ml.Feature>	extract(org.apache.uima.jcas.JCas view, FOCUS_T focusAnnotation)
void	load(URI zmusDataUri)
void	save(URI zmusDataUri)
void	train(Iterable<org.cleartk.ml.Instance<OUTCOME_T>> instances)
org.cleartk.ml.Feature	transform(org.cleartk.ml.Feature feature)

Methods inherited from class org.cleartk.ml.feature.transform.OneToOneTrainableExtractor_ImplBase

isTransformable, transform

Methods inherited from class java.lang.Object

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

Constructor Detail

ZscoreNormalizationExtractor

public ZscoreNormalizationExtractor(String name)

Method Detail

transform

public org.cleartk.ml.Feature transform(org.cleartk.ml.Feature feature)

Specified by:

transform in class org.cleartk.ml.feature.transform.OneToOneTrainableExtractor_ImplBase<OUTCOME_T>

train

public void train(Iterable<org.cleartk.ml.Instance<OUTCOME_T>> instances)

save

public void save(URI zmusDataUri)
          throws IOException

Throws:

IOException

load

public void load(URI zmusDataUri)
          throws IOException

Throws:

IOException

extract

public List<org.cleartk.ml.Feature> extract(org.apache.uima.jcas.JCas view,
                                            FOCUS_T focusAnnotation)
                                     throws org.cleartk.ml.feature.extractor.CleartkExtractorException

Throws:

org.cleartk.ml.feature.extractor.CleartkExtractorException