mPCA.c File Reference

#include <stdio.h>
#include <math.h>
#include <AR/matrix.h>

Include dependency graph for mPCA.c:

Go to the source code of this file.

Defines
#define	EPS   1e-6
#define	MAX_ITER   100
#define	VZERO   1e-16
#define	xmalloc(V, T, S)
Functions
int	arMatrixPCA (ARMat *input, ARMat *evec, ARVec *ev, ARVec *mean)
	compute the PCA of a matrix.
int	arMatrixPCA2 (ARMat *input, ARMat *evec, ARVec *ev)
	compute the PCA of a matrix.
static int	CENTER (ARMat *inout, ARVec *mean)
static int	EV_create (ARMat *input, ARMat *u, ARMat *output, ARVec *ev)
static int	EX (ARMat *input, ARVec *mean)
static int	PCA (ARMat *input, ARMat *output, ARVec *ev)
static int	QRM (ARMat *u, ARVec *ev)
static int	x_by_xt (ARMat *input, ARMat *output)
static int	xt_by_x (ARMat *input, ARMat *output)

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Define Documentation

#define EPS   1e-6

Definition at line 6 of file mPCA.c.

#define MAX_ITER   100

Definition at line 7 of file mPCA.c.

#define VZERO   1e-16

Definition at line 5 of file mPCA.c.

#define xmalloc	(	V,
		T,
		S		)

Value:

{ if( ((V) = (T *)malloc( sizeof(T) * (S) ))\
                               == NULL ) {printf("malloc error\n"); exit(1);} }

Definition at line 8 of file mPCA.c.

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Function Documentation

int arMatrixPCA	(	ARMat *	input,
		ARMat *	evec,
		ARVec *	ev,
		ARVec *	mean
	)

compute the PCA of a matrix.

Compute the Principal Component Analysis (PCA) of a matrix.

Parameters:

	input	source matrix
	evec	eigen vector computed
	ev	eigen value computed
	mean	mean computed

Returns:

0 if success to compute, -1 otherwise

Definition at line 49 of file mPCA.c.

int arMatrixPCA2	(	ARMat *	input,
		ARMat *	evec,
		ARVec *	ev
	)

compute the PCA of a matrix.

Compute the Principal Component Analysis (PCA) of a matrix.

Parameters:

	input	source matrix
	evec	result matrix
	ev	egein value computed

Returns:

0 if success to compute, -1 otherwise

Definition at line 89 of file mPCA.c.

static int CENTER	(	ARMat *	inout,
		ARVec *	mean
	)			[static]

Definition at line 197 of file mPCA.c.

static int EV_create	(	ARMat *	input,
		ARMat *	u,
		ARMat *	output,
		ARVec *	ev
	)			[static]

Definition at line 280 of file mPCA.c.

static int EX	(	ARMat *	input,
		ARVec *	mean
	)			[static]

Definition at line 173 of file mPCA.c.

static int PCA	(	ARMat *	input,
		ARMat *	output,
		ARVec *	ev
	)			[static]

Definition at line 123 of file mPCA.c.

static int QRM	(	ARMat *	u,
		ARVec *	ev
	)			[static]

Definition at line 318 of file mPCA.c.

static int x_by_xt	(	ARMat *	input,
		ARMat *	output
	)			[static]

Definition at line 216 of file mPCA.c.

static int xt_by_x	(	ARMat *	input,
		ARMat *	output
	)			[static]

Definition at line 247 of file mPCA.c.