contrib/mul/pdf1d/tools/select_n_mixtures.cxx File Reference

Program to explore selecting optimal number of mixture components. More...

#include <vcl_iostream.h>
#include <vnl/vnl_vector.h>
#include <pdf1d/pdf1d_compare_to_pdf_bhat.h>
#include <pdf1d/pdf1d_sampler.h>
#include <pdf1d/pdf1d_mixture_builder.h>
#include <pdf1d/pdf1d_gaussian_builder.h>
#include <pdf1d/pdf1d_gaussian_kernel_pdf.h>
#include <pdf1d/pdf1d_gaussian_kernel_pdf_builder.h>

Go to the source code of this file.

Functions
void	test_form (vcl_vector< double > &B, const vnl_vector< double > &x, vcl_vector< pdf1d_builder * > &builder, pdf1d_compare_to_pdf_bhat &comparator)
	Compute how well different forms of pdf match to data x.
void	select_form (vnl_vector< int > &histo, int n_samples, int n_trials, const pdf1d_pdf &true_pdf, vcl_vector< pdf1d_builder * > &builder, pdf1d_compare_to_pdf_bhat &comparator)
void	select_form (int n_samples, int n_trials, int max_comp, const pdf1d_pdf &true_pdf, pdf1d_compare_to_pdf_bhat &comparator)
int	main ()
Variables
vcl_ofstream	ofs

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Detailed Description

Program to explore selecting optimal number of mixture components.

Author:

Tim Cootes

We generate N samples from a known mixture model. We then try to fit mixture models with different numbers of components to the data, and select the one that gives the largest mean overlap.

Definition in file select_n_mixtures.cxx.

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Function Documentation

int main

(

)

Definition at line 117 of file select_n_mixtures.cxx.

void select_form	(	vnl_vector< int > &	histo,
		int	n_samples,
		int	n_trials,
		const pdf1d_pdf &	true_pdf,
		vcl_vector< pdf1d_builder * > &	builder,
		pdf1d_compare_to_pdf_bhat &	comparator
	)

Definition at line 47 of file select_n_mixtures.cxx.

void select_form	(	int	n_samples,
		int	n_trials,
		int	max_comp,
		const pdf1d_pdf &	true_pdf,
		pdf1d_compare_to_pdf_bhat &	comparator
	)

Definition at line 85 of file select_n_mixtures.cxx.

void test_form	(	vcl_vector< double > &	B,
		const vnl_vector< double > &	x,
		vcl_vector< pdf1d_builder * > &	builder,
		pdf1d_compare_to_pdf_bhat &	comparator
	)

Compute how well different forms of pdf match to data x.

pdf[i] is the model built by builder[i]

Definition at line 26 of file select_n_mixtures.cxx.

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Variable Documentation

vcl_ofstream ofs

Definition at line 22 of file select_n_mixtures.cxx.