Implements a Matrix Structure for floating point data and a set of matrix routines for scoring a Gaussian Network. More...

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <assert.h>
#include <lapacke.h>
#include "bge_matrix.h"
#include "bge_vector.h"

Include dependency graph for bge_matrix.c:

Functions
void	BgeMatrixAddition (Bge_Matrix matrix_1, Bge_Matrix matrix_2, Bge_Matrix *output_matrix)
	Adds two matrices together. More...

Bge_Matrix *	BgeMatrixCreate (int cols, int rows)
	Creates a new Matrix to be used by lapack routines. More...

void	BgeMatrixDelete (Bge_Matrix **matrix)
	Deletes a particular matrix and frees the memory allocated. More...

double	BgeMatrixLogDeterminant (Bge_Matrix *matrix)
	Computes the log determinant of a matrix (Only possible for square matrices) More...

void	BgeMatrixScalarMultipliciation (double scalar, Bge_Matrix *matrix)
	Multiples a given matrix be a scalar (Real number) More...

void	BgeMatrixSetPosteriorParentMatrix (Bge_Matrix sub_posterior, Bge_Matrix parent_posterior)
	Sets the posterior submatrix for a parent set of a node. More...

void	BgeMatrixSetPosteriorSubMatrix (unsigned int family, int no_nodes, Bge_Matrix posterior_matrix, Bge_Matrix *submatrix)
	Returns the Posterior matrix restricted to a family of a node. More...

void	BgeVectorOuterProduct (Bge_Vector row_vector, Bge_Vector col_vector, Bge_Matrix *output_matrix)
	Takes two vectors and computes their outer product. More...

Detailed Description

Implements a Matrix Structure for floating point data and a set of matrix routines for scoring a Gaussian Network.

Function Documentation

◆ BgeMatrixAddition()

void BgeMatrixAddition	(	Bge_Matrix *	matrix_1,
		Bge_Matrix *	matrix_2,
		Bge_Matrix *	output_matrix
	)

Adds two matrices together.

Parameters

matrix_1	matrix to be added
matrix_2	matrix to be added

Returns: output matrix for the addition of matrix_1 and matrix_2

Referenced by SetPosteriorParametricMatrix(), and SetSampleVariance().

◆ BgeMatrixCreate()

Bge_Matrix* BgeMatrixCreate	(	int	cols,
		int	rows
	)

Creates a new Matrix to be used by lapack routines.

Parameters

col_dimension	The number of columns of the matrix
row_dimension	The number of rows of the matrix

Returns: A pointer to a matrix with dimensions row_dimension * col_dimension

Referenced by lookup(), SetPosteriorParametricMatrix(), and SetSampleVariance().

◆ BgeMatrixDelete()

void BgeMatrixDelete ( Bge_Matrix ** matrix )

Deletes a particular matrix and frees the memory allocated.

Parameters

matrix The matrix to be deleted

Referenced by SetPosteriorParametricMatrix(), and SetSampleVariance().

◆ BgeMatrixLogDeterminant()

double BgeMatrixLogDeterminant ( Bge_Matrix * matrix )

Computes the log determinant of a matrix (Only possible for square matrices)

Parameters

Bge_Matrix** The matrix for which the log determinant is to be calculated

Returns: The resulting value of the log determinant

◆ BgeMatrixScalarMultipliciation()

void BgeMatrixScalarMultipliciation	(	double	scalar,
		Bge_Matrix *	matrix
	)

Multiples a given matrix be a scalar (Real number)

Parameters

scalar	Each item in the matrix is mulitlplied by this number
Bge_Matrix*	The matrix that is to be multiplied by the scalar

Referenced by SetPosteriorParametricMatrix().

◆ BgeMatrixSetPosteriorParentMatrix()

void BgeMatrixSetPosteriorParentMatrix	(	Bge_Matrix *	sub_posterior,
		Bge_Matrix *	parent_posterior
	)

Sets the posterior submatrix for a parent set of a node.

Parameters

Bge_Matrix*	the posterior matrix restricted to the node and its parents
Bge_Matrix*	the posterior matrix restricted to the parents (output)

◆ BgeMatrixSetPosteriorSubMatrix()

void BgeMatrixSetPosteriorSubMatrix	(	unsigned int *	family,
		int	no_nodes,
		Bge_Matrix *	posterior_matrix,
		Bge_Matrix *	submatrix
	)

Returns the Posterior matrix restricted to a family of a node.

Parameters

family	A set of nodes that contains a node and its parents
no_nodes	The number of nodes in the family
Bge_Matrix*	Posterior_matrix the posterior matrix
Bge_Matrix*	Submatrix the posterior matrix restricted to the variables in the family set