Package org.apache.lucene.classification.utils

Class ConfusionMatrixGenerator.ConfusionMatrix

java.lang.Object

org.apache.lucene.classification.utils.ConfusionMatrixGenerator.ConfusionMatrix

Enclosing class:

ConfusionMatrixGenerator

public static class ConfusionMatrixGenerator.ConfusionMatrix
extends Object

a confusion matrix, backed by a Map representing the linearized matrix

Method Summary

Modifier and Type	Method	Description
double	getAccuracy()	Calculate accuracy on this confusion matrix using the formula: accuracy = correctly-classified / (correctly-classified + wrongly-classified)
double	getAvgClassificationTime()	get the average classification time in milliseconds
double	getF1Measure()	get the F-1 measure on this confusion matrix
double	getF1Measure(String klass)	get the F-1 measure of the given class
Map<String,Map<String,Long>>	getLinearizedMatrix()	get the linearized confusion matrix as a Map
int	getNumberOfEvaluatedDocs()	get the no.
double	getPrecision()	get the macro averaged precision (see getPrecision(String)) over all the classes.
double	getPrecision(String klass)	calculate precision on the given class
double	getRecall()	get the macro averaged recall (see getRecall(String)) over all the classes
double	getRecall(String klass)	calculate recall on the given class
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

getLinearizedMatrix

public Map<String,Map<String,Long>> getLinearizedMatrix()

get the linearized confusion matrix as a Map

Returns:

a Map whose keys are the correct classification answers and whose values are the actual answers' counts

getPrecision

public double getPrecision(String klass)

calculate precision on the given class

Parameters:

klass - the class to calculate the precision for

Returns:

the precision for the given class

getRecall

public double getRecall(String klass)

calculate recall on the given class

Parameters:

klass - the class to calculate the recall for

Returns:

the recall for the given class

getF1Measure

public double getF1Measure(String klass)

get the F-1 measure of the given class

Parameters:

klass - the class to calculate the F-1 measure for

Returns:

the F-1 measure for the given class

getF1Measure

public double getF1Measure()

get the F-1 measure on this confusion matrix

Returns:

the F-1 measure

getAccuracy

public double getAccuracy()

Calculate accuracy on this confusion matrix using the formula: accuracy = correctly-classified / (correctly-classified + wrongly-classified)

Returns:

the accuracy

getPrecision

public double getPrecision()

get the macro averaged precision (see getPrecision(String)) over all the classes.

Returns:

the macro averaged precision as computed from the confusion matrix

getRecall

public double getRecall()

get the macro averaged recall (see getRecall(String)) over all the classes

Returns:

the recall as computed from the confusion matrix

toString

public String toString()

Overrides:

toString in class Object

getAvgClassificationTime

public double getAvgClassificationTime()

get the average classification time in milliseconds

Returns:

the avg classification time

getNumberOfEvaluatedDocs

public int getNumberOfEvaluatedDocs()

get the no. of documents evaluated while generating this confusion matrix

Returns:

the no. of documents evaluated