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/*************************************************************************/
/* */
/* Centre for Speech Technology Research */
/* University of Edinburgh, UK */
/* Copyright (c) 1996 */
/* All Rights Reserved. */
/* */
/* Permission to use, copy, modify, distribute this software and its */
/* documentation for research, educational and individual use only, is */
/* hereby granted without fee, subject to the following conditions: */
/* 1. The code must retain the above copyright notice, this list of */
/* conditions and the following disclaimer. */
/* 2. Any modifications must be clearly marked as such. */
/* 3. Original authors' names are not deleted. */
/* This software may not be used for commercial purposes without */
/* specific prior written permission from the authors. */
/* */
/* THE UNIVERSITY OF EDINBURGH AND THE CONTRIBUTORS TO THIS WORK */
/* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */
/* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */
/* SHALL THE UNIVERSITY OF EDINBURGH NOR THE CONTRIBUTORS BE LIABLE */
/* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */
/* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */
/* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */
/* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */
/* THIS SOFTWARE. */
/* */
/*************************************************************************/
/* */
/* Author : Paul Taylor */
/* Date : April 1996 */
/* --------------------------------------------------------------------- */
/* Matrix class */
/* */
/*************************************************************************/
#ifndef __FMatrix_H__
#define __FMatrix_H__
#include "EST_TSimpleMatrix.h"
#include "EST_TSimpleVector.h"
class EST_FVector;
/** A matrix class for floating point numbers. EST_FMatrix x should be
used instead of float **x wherever possible.*/
class EST_FMatrix : public EST_TSimpleMatrix<float> {
private:
public:
/// size constructor
EST_FMatrix(int m, int n):EST_TSimpleMatrix<float>(m, n) {}
/// copy constructor
EST_FMatrix(const EST_FMatrix &a):EST_TSimpleMatrix<float>(a) {}
/// CHECK - what does this do???
EST_FMatrix(const EST_FMatrix &a, int b);
/// default constructor
EST_FMatrix():EST_TSimpleMatrix<float>() {}
/// Save in file (ascii or binary)
EST_write_status save(const EST_String &filename,
const EST_String &type = "est_ascii" );
/// Load from file (ascii or binary as defined in file)
EST_read_status load(const EST_String &filename);
/// Save in file in est format
EST_write_status est_save(const EST_String &filename,
const EST_String &type);
/// Load from file in est format (binary/ascii defined in file itself)
EST_read_status est_load(const EST_String &filename);
/// Copy 2-d array {\tt x} of size {\tt rows x cols} into matrix.
void copyin(float **x, int rows, int cols);
/// Add elements of 2 same sized matrices.
EST_FMatrix &operator+=(const EST_FMatrix &a);
/// Multiply all elements of matrix by {\tt x}.
friend EST_FMatrix operator*(const EST_FMatrix &a, const float x);
/// Multiply matrix by vector.
friend EST_FVector operator*(const EST_FMatrix &a, const EST_FVector &v);
/// Multiply vector by matrix
friend EST_FVector operator*(const EST_FVector &v,const EST_FMatrix &a);
/// Multiply matrix by matrix.
friend EST_FMatrix operator*(const EST_FMatrix &a, const EST_FMatrix &b);
};
/** A matrix class for integers. {\tt EST_IMatrix x} should be
used instead of {\tt int **x} wherever possible.
*/
class EST_IMatrix: public EST_TSimpleMatrix<int> {
private:
public:
/// size constructor
EST_IMatrix(int m, int n):EST_TSimpleMatrix<int>(m, n) {}
/// copy constructor
EST_IMatrix(EST_IMatrix &a):EST_TSimpleMatrix<int>(a) {}
/// CHECK - what does this do???
EST_IMatrix(EST_IMatrix &a, int b);
/// default constructor
EST_IMatrix():EST_TSimpleMatrix<int>() {}
};
class EST_SMatrix: public EST_TSimpleMatrix<short> {
private:
public:
/// size constructor
EST_SMatrix(int m, int n):EST_TSimpleMatrix<short>(m, n) {}
/// copy constructor
EST_SMatrix(EST_SMatrix &a):EST_TSimpleMatrix<short>(a) {}
/// CHECK - what does this do???
EST_SMatrix(EST_SMatrix &a, int b);
/// default constructor
EST_SMatrix():EST_TSimpleMatrix<short>() {}
int rateconv(int old_sr, int new_sr);
};
/** A vector class for floating point numbers.
{\tt EST_FVector x} should be used instead of {\tt float *x}
wherever possible.
*/
class EST_FVector: public EST_TSimpleVector<float> {
public:
/// Size constructor.
EST_FVector(int n): EST_TSimpleVector<float>(n) {}
/// Copy constructor.
EST_FVector(const EST_FVector &a): EST_TSimpleVector<float>(a) {}
/// Default constructor.
EST_FVector(): EST_TSimpleVector<float>() {}
/// elementwise multiply
EST_FVector &operator*=(const EST_FVector &s);
/// load vector from file <tt> filename</tt>.
EST_read_status load(EST_String &filename);
};
/** A vector class for double precision floating point
numbers. {\tt EST_DVector x} should be used instead of
{\tt float *x} wherever possible.
*/
class EST_DVector: public EST_TSimpleVector<double> {
public:
/// Size constructor.
EST_DVector(int n): EST_TSimpleVector<double>(n) {}
/// Copy constructor.
EST_DVector(EST_DVector &a): EST_TSimpleVector<double>(a) {}
/// Default constructor.
EST_DVector(): EST_TSimpleVector<double>() {}
/// load vector from file <tt> filename</tt>.
EST_read_status load(EST_String &filename);
};
/// find largest element
int matrix_max(const EST_IMatrix &a);
/// find largest element
float matrix_max(const EST_FMatrix &a);
int square(const EST_FMatrix &a);
/// inverse
int inverse(const EST_FMatrix &a, EST_FMatrix &inv);
int inverse(const EST_FMatrix &a, EST_FMatrix &inv, int &singularity);
/// pseudo inverse (for non-square matrices)
int pseudo_inverse(const EST_FMatrix &a, EST_FMatrix &inv);
int pseudo_inverse(const EST_FMatrix &a, EST_FMatrix &inv,int &singularity);
/// some useful matrix creators
/// make an identity matrix of dimension n
void eye(EST_FMatrix &a, const int n);
/// the user should use est_seed48 to seed the random number generator
void est_seed48();
/// used for variance
void make_random_diagonal_matrix(EST_FMatrix &M, const float scale);
/// used for covariance
void make_random_symmetric_matrix(EST_FMatrix &M, const float scale);
void make_poly_basis_function(EST_FMatrix &T, EST_FVector t);
/// elementwise add
EST_FVector add(const EST_FVector &a,const EST_FVector &b);
/// elementwise subtract
EST_FVector subtract(const EST_FVector &a,const EST_FVector &b);
/// enforce symmetry
void symmetrize(EST_FMatrix &a);
/// stack columns on top of each other to make a vector
void stack_matrix(const EST_FMatrix &M, EST_FVector &v);
float determinant(const EST_FMatrix &a);
/// not implemented ??
int singular(EST_FMatrix &a);
/// exchange rows and columns
void transpose(const EST_FMatrix &a,EST_FMatrix &b);
EST_FMatrix triangulate(const EST_FMatrix &a);
/// extract leading diagonal as a matrix
EST_FMatrix diagonalise(const EST_FMatrix &a);
/// extract leading diagonal as a vector
EST_FVector diagonal(const EST_FMatrix &a);
/// sum of elements
float sum(const EST_FMatrix &a);
void multiply(const EST_FMatrix &a, const EST_FMatrix &b, EST_FMatrix &c);
EST_FMatrix operator*(const EST_FMatrix &a, const EST_FMatrix &b);
EST_FMatrix operator-(const EST_FMatrix &a, const EST_FMatrix &b);
EST_FMatrix operator+(const EST_FMatrix &a, const EST_FMatrix &b);
EST_FMatrix sub(const EST_FMatrix &a, int row, int col);
EST_FMatrix fmatrix_abs(const EST_FMatrix &a);
EST_FMatrix row(const EST_FMatrix &a, int row);
EST_FMatrix column(const EST_FMatrix &a, int col);
/// least squares fit
bool
polynomial_fit(EST_FVector &x, EST_FVector &y, EST_FVector &co_effs, int order);
/// weighted least squares fit
bool
polynomial_fit(EST_FVector &x, EST_FVector &y, EST_FVector &co_effs,
EST_FVector &weights, int order);
float
polynomial_value(const EST_FVector &coeffs, const float x);
/// vector dot product
float operator*(const EST_FVector &v1, const EST_FVector &v2);
#endif
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