ROOT::Experimental::Internal::ML::RSampler Class Reference

Implementation of different sampling strategies.

Definition at line 32 of file RSampler.hxx.

Public Member Functions
	RSampler (std::vector< RFlat2DMatrix > &datasets, const std::string &sampleType, float sampleRatio, bool replacement=false, bool shuffle=true, std::size_t setSeed=0)
	~RSampler ()
std::size_t	GetNumEntries ()
void	RandomOversampler (RFlat2DMatrix &ShuffledTensor)
	Oversample entries randomly from the minority dataset.
void	RandomUndersampler (RFlat2DMatrix &ShuffledTensor)
	Undersample entries randomly from the majority dataset.
void	Sampler (RFlat2DMatrix &SampledTensor)
	Collection of sampling types.
void	SampleWithoutReplacement (std::size_t n_samples, std::size_t max)
	Add indices without replacement to fSamples.
void	SampleWithReplacement (std::size_t n_samples, std::size_t max)
	Add indices with replacement to fSamples.
void	SetupRandomOversampler ()
	Calculate fNumEntries and major/minor variables for the random oversampler.
void	SetupRandomUndersampler ()
	Calculate fNumEntries and major/minor variables for the random undersampler.
void	SetupSampler ()
	Calculate fNumEntries and major/minor variables.

Private Attributes
std::vector< RFlat2DMatrix > &	fDatasets
std::size_t	fMajor
std::size_t	fMinor
std::size_t	fNumEntries
std::size_t	fNumMajor
std::size_t	fNumMinor
std::size_t	fNumResampledMajor
std::size_t	fNumResampledMinor
bool	fReplacement
float	fSampleRatio
std::vector< std::size_t >	fSamples
std::string	fSampleType
std::size_t	fSetSeed
bool	fShuffle
std::unique_ptr< RFlat2DMatrixOperators >	fTensorOperators

Constructor & Destructor Documentation

RSampler()

ROOT::Experimental::Internal::ML::RSampler::RSampler	(	std::vector< RFlat2DMatrix > &	datasets,
		const std::string &	sampleType,
		float	sampleRatio,
		bool	replacement = false,
		bool	shuffle = true,
		std::size_t	setSeed = 0 )

Definition at line 14 of file RSampler.cxx.

~RSampler()

ROOT::Experimental::Internal::ML::RSampler::~RSampler ( )

default

Member Function Documentation

GetNumEntries()

std::size_t ROOT::Experimental::Internal::ML::RSampler::GetNumEntries ( )

inline

Definition at line 75 of file RSampler.hxx.

RandomOversampler()

void ROOT::Experimental::Internal::ML::RSampler::RandomOversampler

(

RFlat2DMatrix &

ShuffledTensor

)

Oversample entries randomly from the minority dataset.

Parameters

[in]

SampledTensor

Tensor with all the sampled entries

Definition at line 128 of file RSampler.cxx.

RandomUndersampler()

void ROOT::Experimental::Internal::ML::RSampler::RandomUndersampler

(

RFlat2DMatrix &

ShuffledTensor

)

Undersample entries randomly from the majority dataset.

Parameters

[in]

SampledTensor

Tensor with all the sampled entries

Definition at line 99 of file RSampler.cxx.

Sampler()

void ROOT::Experimental::Internal::ML::RSampler::Sampler

(

RFlat2DMatrix &

SampledTensor

)

Collection of sampling types.

Parameters

[in]

SampledTensor

Tensor with all the sampled entries

Definition at line 43 of file RSampler.cxx.

SampleWithoutReplacement()

void ROOT::Experimental::Internal::ML::RSampler::SampleWithoutReplacement	(	std::size_t	n_samples,
		std::size_t	max )

Add indices without replacement to fSamples.

Parameters

[in]	n_samples	Number of indices to sample
[in]	max	Max index of the sample distribution

Definition at line 183 of file RSampler.cxx.

SampleWithReplacement()

void ROOT::Experimental::Internal::ML::RSampler::SampleWithReplacement	(	std::size_t	n_samples,
		std::size_t	max )

Add indices with replacement to fSamples.

Parameters

[in]	n_samples	Number of indices to sample
[in]	max	Max index of the sample distribution

Definition at line 152 of file RSampler.cxx.

SetupRandomOversampler()

void ROOT::Experimental::Internal::ML::RSampler::SetupRandomOversampler

(

)

Calculate fNumEntries and major/minor variables for the random oversampler.

Definition at line 80 of file RSampler.cxx.

SetupRandomUndersampler()

void ROOT::Experimental::Internal::ML::RSampler::SetupRandomUndersampler

(

)

Calculate fNumEntries and major/minor variables for the random undersampler.

Definition at line 54 of file RSampler.cxx.

SetupSampler()

void ROOT::Experimental::Internal::ML::RSampler::SetupSampler

(

)

Calculate fNumEntries and major/minor variables.

Definition at line 31 of file RSampler.cxx.

Member Data Documentation

fDatasets

std::vector<RFlat2DMatrix>& ROOT::Experimental::Internal::ML::RSampler::fDatasets

private

Definition at line 34 of file RSampler.hxx.

fMajor

std::size_t ROOT::Experimental::Internal::ML::RSampler::fMajor

private

Definition at line 42 of file RSampler.hxx.

fMinor

std::size_t ROOT::Experimental::Internal::ML::RSampler::fMinor

private

Definition at line 43 of file RSampler.hxx.

fNumEntries

std::size_t ROOT::Experimental::Internal::ML::RSampler::fNumEntries

private

Definition at line 40 of file RSampler.hxx.

fNumMajor

std::size_t ROOT::Experimental::Internal::ML::RSampler::fNumMajor

private

Definition at line 44 of file RSampler.hxx.

fNumMinor

std::size_t ROOT::Experimental::Internal::ML::RSampler::fNumMinor

private

Definition at line 45 of file RSampler.hxx.

fNumResampledMajor

std::size_t ROOT::Experimental::Internal::ML::RSampler::fNumResampledMajor

private

Definition at line 46 of file RSampler.hxx.

fNumResampledMinor

std::size_t ROOT::Experimental::Internal::ML::RSampler::fNumResampledMinor

private

Definition at line 47 of file RSampler.hxx.

fReplacement

bool ROOT::Experimental::Internal::ML::RSampler::fReplacement

private

Definition at line 37 of file RSampler.hxx.

fSampleRatio

float ROOT::Experimental::Internal::ML::RSampler::fSampleRatio

private

Definition at line 36 of file RSampler.hxx.

fSamples

std::vector<std::size_t> ROOT::Experimental::Internal::ML::RSampler::fSamples

private

Definition at line 49 of file RSampler.hxx.

fSampleType

std::string ROOT::Experimental::Internal::ML::RSampler::fSampleType

private

Definition at line 35 of file RSampler.hxx.

fSetSeed

std::size_t ROOT::Experimental::Internal::ML::RSampler::fSetSeed

private

Definition at line 39 of file RSampler.hxx.

fShuffle

bool ROOT::Experimental::Internal::ML::RSampler::fShuffle

private

Definition at line 38 of file RSampler.hxx.

fTensorOperators

std::unique_ptr<RFlat2DMatrixOperators> ROOT::Experimental::Internal::ML::RSampler::fTensorOperators

private

Definition at line 51 of file RSampler.hxx.