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 java.lang.Object

implements Factorization

Abstract class for matrix factorization

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

static double

SMALL_QUANTITY

Constructor Summary

AbstractFactorization()

Method Summary

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)