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

#include <evaluator.h>

Public Member Functions
	count_error_functor (const P &)
double	operator() (const example &) const

Detailed Description

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

Classification error functor based on exact matches.

Template Parameters

P	individual type

The functor owns an oracle initialised from the program and computes a scalar error value for each training example.

This functor returns 0 for a correct prediction and 1 otherwise. When used with sum_error_evaluator, fitness corresponds to the negative number of classification errors.

See also

count_error_evaluator

Constructor & Destructor Documentation

count_error_functor()

template<Individual P>

count_error_functor::count_error_functor ( const P & prg )

explicit

Sets up the environment for error measurement.

Parameters

[in]

prg

the program to be measured

Member Function Documentation

operator()()

template<Individual P>

double count_error_functor::operator() ( const example & example ) const

nodiscard

Parameters

[in]

example

current training case

Returns

a measurement of the error of the model/program on the current training case. The value returned is in the [0;1] range

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

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