85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
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#pragma once
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/*
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* Copyright (C) 2024 Brett Terpstra
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef BLT_GP_SELECTION_H
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#define BLT_GP_SELECTION_H
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#include <blt/gp/fwdecl.h>
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#include <blt/gp/tree.h>
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#include <blt/std/assert.h>
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namespace blt::gp
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{
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class selection_t
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{
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public:
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/**
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* @param program gp program to select with, used in randoms
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* @param pop population to select from
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* @param stats the populations statistics
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* @return
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*/
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virtual tree_t& select(gp_program& program, population_t& pop, population_stats& stats) = 0;
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virtual ~selection_t() = default;
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};
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class select_best_t : public selection_t
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{
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public:
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tree_t& select(gp_program& program, population_t& pop, population_stats& stats) final;
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};
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class select_worst_t : public selection_t
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{
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public:
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tree_t& select(gp_program& program, population_t& pop, population_stats& stats) final;
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};
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class select_random_t : public selection_t
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{
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public:
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tree_t& select(gp_program& program, population_t& pop, population_stats& stats) final;
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};
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class select_tournament_t : public selection_t
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{
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public:
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explicit select_tournament_t(blt::size_t selection_size = 3): selection_size(selection_size)
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{
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if (selection_size < 1)
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BLT_ABORT("Unable to select with this size. Must select at least 1 individual!");
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}
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tree_t& select(gp_program& program, population_t& pop, population_stats& stats) final;
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private:
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blt::size_t selection_size;
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};
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class select_fitness_proportionate_t : public selection_t
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{
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public:
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tree_t& select(gp_program& program, population_t& pop, population_stats& stats) final;
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};
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}
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#endif //BLT_GP_SELECTION_H
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