ultra::src::gaussian_evaluator< P > Class Template Reference

#include <evaluator.h>

Inheritance diagram for ultra::src::gaussian_evaluator< P >:

Public Member Functions
	gaussian_evaluator (multi_dataset< dataframe > &)
double	operator() (const P &) const
auto	predictor (const P &) const

Additional Inherited Members
Static Public Attributes inherited from ultra::src::evaluator< multi_dataset< dataframe > >
static constexpr std::size_t	default_min_samples_per_thread
Protected Member Functions inherited from ultra::src::evaluator< multi_dataset< dataframe > >
	evaluator (D &) noexcept
bool	set_parallel_evaluation (unsigned, std::size_t=0) noexcept
const auto &	data () const noexcept
std::size_t	min_samples_per_thread () const noexcept
unsigned	parallel_helpers () const noexcept

Detailed Description

template<Individual P>
class ultra::src::gaussian_evaluator< P >

Evaluator for multi-class classification using Gaussian models.

Template Parameters

P	individual type

Instead of using predefined multiple thresholds to form different regions in the program output space for different classes, this approach uses probabilities of different classes, derived from Gaussian distributions, to construct the fitness function for classification.

See also

https://github.com/morinim/ultra/wiki/bibliography#13

Constructor & Destructor Documentation

gaussian_evaluator()

template<Individual P>

gaussian_evaluator::gaussian_evaluator ( multi_dataset< dataframe > & d )

explicit

Constructs the evaluator.

Parameters

[in]

d

training dataset

Member Function Documentation

operator()()

template<Individual P>

double gaussian_evaluator::operator() ( const P & prg ) const

nodiscard

Computes the classification fitness.

Parameters

[in]

prg

program to evaluate

Returns

fitness value (greater is better, max is 0)

predictor()

template<Individual P>

auto gaussian_evaluator::predictor ( const P & prg ) const

nodiscard

Builds a Gaussian oracle for the given program.

Parameters

[in]

prg

program to transform into an oracle

Returns

oracle object associated with prg

---

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

• gp/src/evaluator.h
• gp/src/evaluator.tcc