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

Program to test different kernel approximations. More...

#include <vcl_iostream.h>
#include <mbl/mbl_stats_1d.h>
#include <vnl/vnl_vector.h>
#include <pdf1d/pdf1d_compare_to_pdf_bhat.h>
#include <pdf1d/pdf1d_compare_to_pdf_ks.h>
#include <pdf1d/pdf1d_sampler.h>
#include <pdf1d/pdf1d_exponential.h>
#include <pdf1d/pdf1d_gaussian_kernel_pdf_builder.h>

Go to the source code of this file.

Functions
void	test_comparison (vcl_vector< mbl_stats_1d > &B_stats, const vnl_vector< double > &x, const pdf1d_pdf &true_pdf, vcl_vector< pdf1d_compare_to_pdf * > comparator)
	Compute how well data in x matches true pdf using n different comparators.
void	test_comparison (vcl_vector< mbl_stats_1d > &B_stats, int n_samples, int n_repeats, const pdf1d_pdf &true_pdf, vcl_vector< pdf1d_compare_to_pdf * > comparator)
	Compute how well data sampled from true_pdf matches true_pdf using n different comparators.
void	test_comparison (int n_samples, int n_trials, const pdf1d_pdf &true_pdf, vcl_vector< pdf1d_compare_to_pdf * > comparator, const vcl_vector< vcl_string > &name)
int	main ()

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Detailed Description

Program to test different kernel approximations.

Author:

Tim Cootes

We generate N samples from a known distribution e.g. unit Gaussian, flat or exponential. We then use a variety of kernel estimation techniques (e.g. fixed width, adaptive kernels etc) to generate a kernel pdf from the samples. We then estimate the Bhat. overlap with the true pdf.

Definition in file compare_kernel_estimates.cxx.

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Function Documentation

int main

(

)

Definition at line 79 of file compare_kernel_estimates.cxx.

void test_comparison	(	vcl_vector< mbl_stats_1d > &	B_stats,
		const vnl_vector< double > &	x,
		const pdf1d_pdf &	true_pdf,
		vcl_vector< pdf1d_compare_to_pdf * >	comparator
	)

Compute how well data in x matches true pdf using n different comparators.

Definition at line 25 of file compare_kernel_estimates.cxx.

void test_comparison	(	vcl_vector< mbl_stats_1d > &	B_stats,
		int	n_samples,
		int	n_repeats,
		const pdf1d_pdf &	true_pdf,
		vcl_vector< pdf1d_compare_to_pdf * >	comparator
	)

Compute how well data sampled from true_pdf matches true_pdf using n different comparators.

Definition at line 41 of file compare_kernel_estimates.cxx.

void test_comparison	(	int	n_samples,
		int	n_trials,
		const pdf1d_pdf &	true_pdf,
		vcl_vector< pdf1d_compare_to_pdf * >	comparator,
		const vcl_vector< vcl_string > &	name
	)

Definition at line 58 of file compare_kernel_estimates.cxx.