de.jungblut.math.minimize

Class DenseMatrixFolder

java.lang.Object

de.jungblut.math.minimize.DenseMatrixFolder

public abstract class DenseMatrixFolder
extends Object

Constructor Summary

Constructors

Constructor and Description
DenseMatrixFolder()

Method Summary

Modifier and Type	Method and Description
static de.jungblut.math.DoubleVector	foldMatrices(de.jungblut.math.DoubleMatrix... matrices) Folds the given matrices column-wise into a single vector.
static de.jungblut.math.DoubleVector	foldMatrix(de.jungblut.math.DoubleMatrix mat) Folds a single matrix into a single vector by rows.
static de.jungblut.math.DoubleMatrix[]	unfoldMatrices(de.jungblut.math.DoubleVector vector, int[][] sizeArray) Unfolds a vector into matrices by the rules defined in the sizeArray.
static de.jungblut.math.DoubleMatrix	unfoldMatrix(de.jungblut.math.DoubleVector vector, int rows, int cols) Unfolds a single vector into a single matrix by rows.

Methods inherited from class java.lang.Object

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

Constructor Detail

DenseMatrixFolder

public DenseMatrixFolder()

Method Detail

foldMatrices

public static de.jungblut.math.DoubleVector foldMatrices(de.jungblut.math.DoubleMatrix... matrices)

Folds the given matrices column-wise into a single vector.

unfoldMatrices

public static de.jungblut.math.DoubleMatrix[] unfoldMatrices(de.jungblut.math.DoubleVector vector,
                                                             int[][] sizeArray)

Unfolds a vector into matrices by the rules defined in the sizeArray. The sizeArray must have following format: in each row the row and column count must be provided.
Example: sizeArray = {{2,3},{3,2}} will unfold into matrix 0 with 2 rows and 3 columns and matrix 1 with 3 rows and 2 columns.

unfoldMatrix

public static de.jungblut.math.DoubleMatrix unfoldMatrix(de.jungblut.math.DoubleVector vector,
                                                         int rows,
                                                         int cols)

Unfolds a single vector into a single matrix by rows.

Parameters:

vector - the vector to split.

rows - the number of rows the target matrix needs to have.

cols - the number of columns the target matrix needs to have.

Returns:

a matrix with the contents of the vector, row split.

foldMatrix

public static de.jungblut.math.DoubleVector foldMatrix(de.jungblut.math.DoubleMatrix mat)

Folds a single matrix into a single vector by rows.