#include <yat/statistics/WilcoxonFoldChange.h>

Inheritance diagram for theplu::yat::statistics::WilcoxonFoldChange:

Public Member Functions
	WilcoxonFoldChange (bool absolute=true)
	Default Constructor.

double	score (const classifier::Target &target, const utility::VectorBase &value) const

double	score (const classifier::Target &target, const utility::VectorBase &value, const utility::VectorBase &weight) const

void	absolute (bool absolute)
	Function changing mode of Score.

virtual double	score (const classifier::Target &target, const classifier::DataLookup1D &value) const

virtual double	score (const classifier::Target &target, const classifier::DataLookupWeighted1D &value) const

double	score (const classifier::Target &target, const classifier::DataLookup1D &value, const classifier::DataLookup1D &weight) const

Protected Attributes
bool	absolute_

Detailed Description

WilcoxonFoldChange.

WilcoxonFoldChange is calculated as follows: Having $ n_+ $ samples from class + and $ n_- $ from class -, all $ n_+ n_- $ pairwise distances are calculated, and the WilcoxonFoldChange is the median of these values.

Member Function Documentation

double theplu::yat::statistics::WilcoxonFoldChange::score	(	const classifier::Target &	target,
		const utility::VectorBase &	value
	)		const

virtual

Returns: median of all pairwise differences

Parameters

target	defining the two groups (Target.binary() )
value	vector of the values

Implements theplu::yat::statistics::Score.

double theplu::yat::statistics::WilcoxonFoldChange::score	(	const classifier::Target &	target,
		const utility::VectorBase &	value,
		const utility::VectorBase &	weight
	)		const

virtual

Returns: weighted median of all pairwise differences

For each pair a DataWeight is created with value = value(i) - value(j) and weight = weight(i)*weight(j) where sample i and sample j come from different groups.

Parameters

target	defining the two groups
value	vector of the values
weight	vector of accompanied weight to the values

Note: not implemented

Implements theplu::yat::statistics::Score.

virtual double theplu::yat::statistics::Score::score	(	const classifier::Target &	target,
		const classifier::DataLookup1D &	value
	)		const

virtualinherited

Function calculating the score. In absolute mode, also the score using negated class labels is calculated, and the largest of the two scores are calculated.

value is copied to a utility::vector and that operator is called. If speed is important this operator should be implemented in inherited class to avoid copying.

Returns: score

virtual double theplu::yat::statistics::Score::score	(	const classifier::Target &	target,
		const classifier::DataLookupWeighted1D &	value
	)		const

virtualinherited

Function calculating the score in a weighted fashion. In absolute mode, also the score using negated class labels is calculated, and the largest of the two scores are calculated. Absolute mode should be used when two-tailed test is wanted.

value is copied to two utility::vector and that operator is called. If speed is important this operator should be implemented in inherited class to avoid copying.

Reimplemented in theplu::yat::statistics::tScore, theplu::yat::statistics::SAMScore, theplu::yat::statistics::SNRScore, theplu::yat::statistics::AUC, theplu::yat::statistics::Pearson, and theplu::yat::statistics::FoldChange.

double theplu::yat::statistics::Score::score	(	const classifier::Target &	target,
		const classifier::DataLookup1D &	value,
		const classifier::DataLookup1D &	weight
	)		const

inherited

Function calculating the weighted version of score. In absolute mode, also the score using negated class labels is calculated, and the largest of the two scores are calculated. Absolute mode should be used when two-tailed test is wanted.

value and weight are copied to utility::vector and the corresponding operator is called. If speed is important this operator should be implemented in inherited class to avoid copying.

Member Data Documentation

bool theplu::yat::statistics::Score::absolute_

protectedinherited

true if method is absolute, which means if score is below expected value (by chance) E, score returns E-score+E instead.

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

yat/statistics/WilcoxonFoldChange.h

Public Member Functions

Protected Attributes

Detailed Description

Member Function Documentation

Member Data Documentation