Uniform random dimensionality reduction. More...

#include <DRUniformStrategy.hpp>

Public Member Functions
	DRUniformStrategy (int n_vars)

std::string	display_name () const override
	Human-readable name for display in summaries.

DRResult	select (types::FeatureMatrix const &x, stats::GroupPartition const &group_spec, stats::RNG &rng) const override
	Select a subset of variables.

void	to_json (nlohmann::json &j) const override
	Serialize this strategy's configuration to JSON.

Public Member Functions inherited from ppforest2::dr::DRStrategy
DRResult	operator() (types::FeatureMatrix const &x, stats::GroupPartition const &group_spec, stats::RNG &rng) const
	Convenience operator: equivalent to select().

Public Member Functions inherited from Strategy< DRStrategy >
virtual	~Strategy ()=default

Static Public Member Functions
static DRStrategy::Ptr	from_json (nlohmann::json const &j)

Static Public Member Functions inherited from Strategy< DRStrategy >
static Ptr	from_json (nlohmann::json const &j)
	Construct a strategy from its JSON representation.

static bool	register_strategy (std::string const &name, Factory factory)
	Register a concrete strategy for JSON deserialization.

Additional Inherited Members
Public Types inherited from Strategy< DRStrategy >
using	Factory
	Factory function type for deserializing a strategy from JSON.

using	Ptr

Detailed Description

Uniform random dimensionality reduction.

Selects n_vars variables uniformly at random (without replacement) from the full set of features. Used in random forests to introduce diversity between trees.

Constructor & Destructor Documentation

◆ DRUniformStrategy()

ppforest2::dr::DRUniformStrategy::DRUniformStrategy ( int n_vars )

explicit

Member Function Documentation

◆ display_name()

std::string ppforest2::dr::DRUniformStrategy::display_name ( ) const

inlineoverridevirtual

Human-readable name for display in summaries.

Implements Strategy< DRStrategy >.

◆ from_json()

static DRStrategy::Ptr ppforest2::dr::DRUniformStrategy::from_json ( nlohmann::json const & j )

static

◆ select()

DRResult ppforest2::dr::DRUniformStrategy::select	(	types::FeatureMatrix const &	x,
		stats::GroupPartition const &	group_spec,
		stats::RNG &	rng ) const

overridevirtual

Select a subset of variables.

Parameters

x	Feature matrix (n × p).
group_spec	Group partition.
rng	Random number generator.

Returns: DRResult recording which columns were selected.

Implements ppforest2::dr::DRStrategy.

◆ to_json()

void ppforest2::dr::DRUniformStrategy::to_json ( nlohmann::json & j ) const

overridevirtual

Serialize this strategy's configuration to JSON.

Must include a "name" field identifying the strategy type, plus any strategy-specific parameters.