edu.umass.cs.mallet.base.classify.evaluate

Class AccuracyCoverage

java.lang.Object

edu.umass.cs.mallet.base.classify.evaluate.AccuracyCoverage

All Implemented Interfaces:

ActionListener, EventListener

public class AccuracyCoverage
extends Object
implements ActionListener

Methods for calculating and displaying the accuracy v. coverage data for a Trial

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	AccuracyCoverage.ClassificationComparator

Constructor Summary

Constructors

Constructor and Description
AccuracyCoverage(Classifier C, InstanceList ilist, int numBuckets, String title)
AccuracyCoverage(Classifier C, InstanceList ilist, String title)
AccuracyCoverage(Trial t, int numBuckets, String title, String dataName) Constructs object, sorts classifications, and creates accuracyValues array
AccuracyCoverage(Trial t, String title)
AccuracyCoverage(Trial t, String title, String name)

Method Summary

Modifier and Type	Method and Description
double	accuracyAtCoverage(double cov) accuracy at a given coverage percentage
double[]	accuracyValues()
void	actionPerformed(ActionEvent event)
void	addDataToGraph(double[] accValues, int nBuckets, String name)
void	addTrial(Trial t, int nBuckets, String name)
void	addTrial(Trial t, String name)
void	createAccuracyArray() Creates array of accuracy values for coverage at each step as defined by numBuckets.
double	cumulativeAccuracy() Finds the "area under the acc/cov curve" steps by one percentage point and calcs area of trapezoid
void	displayGraph() Displays the accuracy v.
void	sortClassifications() Sort classifications ArrayList by winner's value

Methods inherited from class java.lang.Object

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

Constructor Detail

AccuracyCoverage

public AccuracyCoverage(Trial t,
                        int numBuckets,
                        String title,
                        String dataName)

Constructs object, sorts classifications, and creates accuracyValues array

Parameters:

t - trial to get data from

numBuckets - number of x-axis measurements to find accuracy

AccuracyCoverage

public AccuracyCoverage(Trial t,
                        String title,
                        String name)

AccuracyCoverage

public AccuracyCoverage(Trial t,
                        String title)

AccuracyCoverage

public AccuracyCoverage(Classifier C,
                        InstanceList ilist,
                        String title)

AccuracyCoverage

public AccuracyCoverage(Classifier C,
                        InstanceList ilist,
                        int numBuckets,
                        String title)

Method Detail

cumulativeAccuracy

public double cumulativeAccuracy()

Finds the "area under the acc/cov curve" steps by one percentage point and calcs area of trapezoid

createAccuracyArray

public void createAccuracyArray()

Creates array of accuracy values for coverage at each step as defined by numBuckets.

accuracyAtCoverage

public double accuracyAtCoverage(double cov)

accuracy at a given coverage percentage

Parameters:

cov - coverage percentage

Returns:

accuracy value

sortClassifications

public void sortClassifications()

Sort classifications ArrayList by winner's value

addDataToGraph

public void addDataToGraph(double[] accValues,
                           int nBuckets,
                           String name)

displayGraph

public void displayGraph()

Displays the accuracy v. coverage graph

actionPerformed

public void actionPerformed(ActionEvent event)

Specified by:

actionPerformed in interface ActionListener

addTrial

public void addTrial(Trial t,
                     String name)

addTrial

public void addTrial(Trial t,
                     int nBuckets,
                     String name)

accuracyValues

public double[] accuracyValues()