dragon.matrix.factorize

Class AbstractFactorization

java.lang.Object

dragon.matrix.factorize.AbstractFactorization

All Implemented Interfaces:

Factorization

Direct Known Subclasses:

NMF, SVD

public abstract class AbstractFactorization
extends Object
implements Factorization

Abstract class for matrix factorization

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

Fields

Modifier and Type	Field and Description
static double	SMALL_QUANTITY

Constructor Summary

Constructors

Constructor and Description
AbstractFactorization()

Method Summary

Modifier and Type	Method and Description
protected DoubleDenseMatrix	genPositiveMatrix(int x, int y)
protected void	normalizeColumn(DoubleDenseMatrix a)
protected void	product(DoubleDenseMatrix a, DoubleDenseMatrix b, DoubleDenseMatrix c)
protected void	product(SparseMatrix a, DoubleDenseMatrix b, DoubleDenseMatrix c)
protected void	transpose(DoubleDenseMatrix a, DoubleDenseMatrix at)

Methods inherited from class java.lang.Object

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

Methods inherited from interface dragon.matrix.factorize.Factorization

factorize, getLeftMatrix, getMiddleMatrix, getRightMatrix

Field Detail

SMALL_QUANTITY

public static final double SMALL_QUANTITY

See Also:

Constant Field Values

Constructor Detail

AbstractFactorization

public AbstractFactorization()

Method Detail

genPositiveMatrix

protected DoubleDenseMatrix genPositiveMatrix(int x,
                                              int y)

product

protected void product(DoubleDenseMatrix a,
                       DoubleDenseMatrix b,
                       DoubleDenseMatrix c)

product

protected void product(SparseMatrix a,
                       DoubleDenseMatrix b,
                       DoubleDenseMatrix c)

transpose

protected void transpose(DoubleDenseMatrix a,
                         DoubleDenseMatrix at)

normalizeColumn

protected void normalizeColumn(DoubleDenseMatrix a)