keel.Algorithms.ImbalancedClassification.CSMethods.MLPerceptronBackpropCS

Class Matrix

java.lang.Object

keel.Algorithms.ImbalancedClassification.CSMethods.MLPerceptronBackpropCS.Matrix

public class Matrix
extends java.lang.Object

Class with matrix operations

Since:

JDK1.5

Version:

0.1

Author:

Written by Nicolas Garcia Pedrajas (University of Cordoba) 27/02/2007

Constructor Summary

Constructors

Constructor and Description
Matrix()

Method Summary

Modifier and Type	Method and Description
static int	InvertMatrix(double[][] matrix, double[][] inverted, int n) Inversion method
static int	lu_decompose(double[][] a, int n, double[] scales, double[][] lu, int[] ps) Lu Descomposition of a matrix
static void	lu_solve(double[] x, double[] b, int n, double[][] lu, int[] ps) Lu solution of a matrix

Methods inherited from class java.lang.Object

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

Constructor Detail

Matrix

public Matrix()

Method Detail

InvertMatrix

public static int InvertMatrix(double[][] matrix,
                               double[][] inverted,
                               int n)

Inversion method

Parameters:

matrix - Input matrix

inverted - Inverted output matrix

n - Matrix order (Number of rows and columns)

Returns:

integer error code (1 if everything is OK and 0 otherwise)

lu_solve

public static void lu_solve(double[] x,
                            double[] b,
                            int n,
                            double[][] lu,
                            int[] ps)

Lu solution of a matrix

Parameters:

x - vector of inputs

b - vector of coefficients

n - number of elements

lu - matrix with lu decomposition

ps - indexes

lu_decompose

public static int lu_decompose(double[][] a,
                               int n,
                               double[] scales,
                               double[][] lu,
                               int[] ps)

Lu Descomposition of a matrix

Parameters:

a - matrix of coefficients

n - number of elements

scales - vector with scales of the elements

lu - matrix with the lu decomposition

ps - indexes

Returns:

integer error code (1 if everything is OK and 0 otherwise)