/* -*- mode: c++ -*-
*/
/*
GIFT, a flexible content based image retrieval system.
Copyright (C) 1998, 1999, 2000 CUI, University of Geneva
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
// -*- mode: c++ -*-
#ifndef _CMATRIXWITHEIGENVECTORS
#define _CMATRIXWITHEIGENVECTORS
#include "CMatrix.h"
/**
A CMatrix with a CMatrix of eigenvectors in it.
The goal of this is to pick the "best" eigenvector
with respect to our matrix of mutual trust.
Algorithm for calculating eigenvectors comes from
numerical recipes.
define:_CMATRIXWITHEIGENVECTORS_TEST to get a test program with it (main)
*/
class CMatrixWithEigenVectors.html">CMatrixWithEigenVectors:public CMatrix{
/** are the eigenvectors of this current? */
bool mIsCurrentEigenVectors;
/** the eigenvectors of this matrix */
CMatrix* mEigenVectors;
/** */
vector<float> mEigenValues;
/** the number of jacobi rotations */
int mNumberOfRotations;
public:
/** */
CMatrixWithEigenVectors(int inSize);
/**
Calculate the eigenvectors for this matrix and store them
in mEigenValues; The corresponding Eigenvectors go to
mEigenVectors.
Algorithm taken from numerical recipes
kept semantics intact, but tried to do about
everything differently.
(pages 463-469 "Numerical recipes in C", 2nd edition)
Parameter is the size of the upper left submatrix
for which the eigenvectors are calculated.
mEigenvectors will have this size as well as mEigenValues
*/
void calculateEigenVectors(int inSize);
/**
calls calculateEigenVectors(mSize)
*/
void calculateEigenVectors();
/** get a reference to the eigenvectors */
const CMatrix& getEigenVectors()const;
/** get a reference to the eigenvectors */
const vector<float>& getEigenValues()const;
/** generating diagnostic output:
Matrix and its Eigenvectors*/
friend ostream& operator<<(ostream& outStream,
const CMatrixWithEigenVectors& inMatrix);
};
ostream& operator<<(ostream& outStream,
const CMatrixWithEigenVectors& inMatrix);
#endif
Documentation generated by muellerw@pc7170 on Fre Sep 29 14:43:08 CEST 2000