A class which fetches the samples in bootstrap manner in lazy way. More...

#include <bootstrap.h>

Public Member Functions
	Lazy_Iterator (const vector< int > p_pids, const vector< float > p_preds, const vector< float > p_y, const vector< float > p_w, float p_sample_ratio, int p_sample_per_pid, int max_loops, int seed, const vector< int > *p_preds_order=NULL)
	The Ctor.

void	init (const vector< int > p_pids, const vector< float > p_preds, const vector< float > p_y, const vector< float > p_w, float p_sample_ratio, int p_sample_per_pid, int max_loops, int seed)

bool	fetch_next (int thread, float &ret_y, float &ret_pred, float &weight)
	Inline function to fetch next pred,label couple in the bootstrap process.

bool	fetch_next (int thread, float &ret_y, const float &ret_pred, float &weight, const int &preds_order)

bool	fetch_next_external (int thread, float &ret_y, float &ret_pred, float &weight)
	external function to fetch next pred,label couple in the bootstrap process for external implementitions

bool	fetch_next_external (int thread, float &ret_y, float &ret_pred, float &weight, const int *&preds_order)
	external function to fetch next pred,label couple in the bootstrap process for external implementitions

void	restart_iterator (int thread)
	to restart the iterator

void	set_static (const vector< float > p_y, const vector< float > p_preds, const vector< float > p_w, const vector< int > p_preds_order, int thread_num)
	set the bootstrap to retrieve those vectors p_y,p_preds with no randomizations

void	set_thread_sample_all (int thread)

Data Fields
float	sample_ratio
	the sample ratio of the patients out of all patients in each bootstrap

int	sample_per_pid
	how many samples to take for each patients. 0 - means no sampling take all sample for patient

bool	sample_all_no_sampling
	for calcing Obs if true

size_t	num_categories
	number of categories (inferred)

Detailed Description

A class which fetches the samples in bootstrap manner in lazy way.

The object doesn't creates vectors for labels,scores in each bootstrap but fetches the samples in randomization without creating memory allocation

Constructor & Destructor Documentation

The Ctor.

Parameters

p_pids	a reference to the ids vector
p_preds	a reference to the predicitons vector
p_y	a reference to the labels vector
p_sample_ratio	a sample ratio parameter for the bootstrap (0-1]
p_sample_per_pid	a sample count per patient
max_loops	a maximal number of accessing the bootstrap (num of threads or the bootstrap loop count).
seed	if 0 will use random device to select seed for randomization

void Lazy_Iterator::set_static	(	const vector< float > *	p_y,
		const vector< float > *	p_preds,
		const vector< float > *	p_w,
		const vector< int > *	p_preds_order,
		int	thread_num
	)

set the bootstrap to retrieve those vectors p_y,p_preds with no randomizations

Parameters

p_y	a pointer to array labels
p_preds	a pointer to array predictions
thread_num	an access point to the bootstrap state - thread_numbeer or bootstrap loop count

The documentation for this class was generated from the following files: