Class AlgorithmLDA

java.lang.Object
  Algorithm
      AlgorithmLDA

All Implemented Interfaces:

java.lang.Runnable

public class AlgorithmLDA
extends Algorithm

Implements the Linear Discriminant Analysis Algorithm

Constructor Summary

AlgorithmLDA()

Method Summary

void	betweenClass(Matrix M) Determines the between class scatter matrix for the class independent linear discrimination algorithm
void	computeDecisionRegions() Computes the line of discrimination for class independent LDA
void	computeErrors() Counts the data points in each set in error and displays them on the text message window
void	displayMatrices() Display two matrices - covariance matrix and the transformation matrix in the text message window
boolean	initialize() Overrides the initialize() method in the base class.
void	run() Implementation of the run function from the Runnable interface.
void	transformLDA(DataPoints d, Matrix S) Transforms a given set of points to a new space using the class independent linear discrimination analysis algorithm
void	withinClass(Matrix M) Determines the within class scatter matrix

Methods inherited from class Algorithm

computeMeans, disableControl, enableControl, nextStep, prevStep, scaleToFitData, setDataPoints, setOutputPanel, setProcessBox

Methods inherited from class java.lang.Object

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

Constructor Detail

AlgorithmLDA

public AlgorithmLDA()

Method Detail

initialize

public boolean initialize()

Overrides the initialize() method in the base class. Initializes member data and prepares for execution of first step. This method "resets" the algorithm.

Specified by:

initialize in class Algorithm

Returns:

Returns true.

withinClass

public void withinClass(Matrix M)

Determines the within class scatter matrix

Parameters:

M - Matrix for within class scatter matrix

See Also:

Matrix

betweenClass

public void betweenClass(Matrix M)

Determines the between class scatter matrix for the class independent linear discrimination algorithm

Parameters:

M - Matrix for storing between class scatter matrix

See Also:

Matrix

run

public void run()

Implementation of the run function from the Runnable interface. Determines what the current step is and calls the appropriate method.

Specified by:

run in interface java.lang.Runnable

Specified by:

run in class Algorithm

displayMatrices

public void displayMatrices()

Display two matrices - covariance matrix and the transformation matrix in the text message window

transformLDA

public void transformLDA(DataPoints d,
                         Matrix S)

Transforms a given set of points to a new space using the class independent linear discrimination analysis algorithm

Parameters:

d - Datapoint - input data point

S - Matrix containing between class to within class ratio

See Also:

DataPoints, Matrix

computeDecisionRegions

public void computeDecisionRegions()

Computes the line of discrimination for class independent LDA

computeErrors

public void computeErrors()

Counts the data points in each set in error and displays them on the text message window