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Fix bug with generators?

main
Brett 2025-04-05 17:14:16 -04:00
parent 0dc083e095
commit 2e09696a67
8 changed files with 236 additions and 265 deletions
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241
.idea/editor.xml
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@ -240,244 +240,7 @@
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</component> </component>
</project> </project>

3
CMakeLists.txt
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@ -27,7 +27,7 @@ macro(compile_options target_name)
sanitizers(${target_name}) sanitizers(${target_name})
endmacro() endmacro()
project(blt-gp VERSION 0.4.6) project(blt-gp VERSION 0.4.9)
include(CTest) include(CTest)
@ -121,5 +121,6 @@ if (${BUILD_GP_TESTS})
blt_add_project(blt-symbolic-regression tests/symbolic_regression_test.cpp test) blt_add_project(blt-symbolic-regression tests/symbolic_regression_test.cpp test)
blt_add_project(blt-drop tests/drop_test.cpp test) blt_add_project(blt-drop tests/drop_test.cpp test)
blt_add_project(blt-drop-2-type tests/2_type_drop_test.cpp test)
endif () endif ()

1
examples/symbolic_regression.h
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@ -40,6 +40,7 @@ namespace blt::gp::example
constexpr static double value_cutoff = 1.e15; constexpr static double value_cutoff = 1.e15;
for (auto& fitness_case : training_cases) for (auto& fitness_case : training_cases)
{ {
BLT_GP_UPDATE_CONTEXT(fitness_case);
const auto diff = std::abs(fitness_case.y - current_tree.get_evaluation_value<float>(fitness_case)); const auto diff = std::abs(fitness_case.y - current_tree.get_evaluation_value<float>(fitness_case));
if (diff < value_cutoff) if (diff < value_cutoff)
{ {

2
lib/blt

@ -1 +1 @@
Subproject commit 9a05c86b02c9c45c2b384c531007416148ec4b56 Subproject commit 729a16ab574e31bf1b44446a777e4ee834518c6e

19
src/transformers.cpp
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@ -144,15 +144,34 @@ namespace blt::gp
size_t mutation_t::mutate_point(gp_program& program, tree_t& c, const tree_t::subtree_point_t node) const size_t mutation_t::mutate_point(gp_program& program, tree_t& c, const tree_t::subtree_point_t node) const
{ {
auto& new_tree = tree_t::get_thread_local(program); auto& new_tree = tree_t::get_thread_local(program);
#if BLT_DEBUG_LEVEL >= 2
auto previous_size = new_tree.size();
auto previous_bytes = new_tree.total_value_bytes();
#endif
config.generator.get().generate(new_tree, {program, node.type, config.replacement_min_depth, config.replacement_max_depth}); config.generator.get().generate(new_tree, {program, node.type, config.replacement_min_depth, config.replacement_max_depth});
#if BLT_DEBUG_LEVEL >= 2
const auto old_op = c.get_operator(node.pos);
if (!new_tree.check(detail::debug::context_ptr))
{
BLT_ERROR("Mutate point new tree check failed!");
BLT_ERROR("Old Op: {} got replaced with New Op: {}", program.get_name(old_op.id()).value_or("Unknown"),
program.get_name(new_tree.get_operator(0).id()).value_or("Unknown"));
BLT_ERROR("Tree started with size: {} and bytes: {}", previous_size, previous_bytes);
throw std::runtime_error("Mutate Point tree check failed");
}
#endif
c.replace_subtree(node, new_tree); c.replace_subtree(node, new_tree);
// this will check to make sure that the tree is in a correct and executable state. it requires that the evaluation is context free! // this will check to make sure that the tree is in a correct and executable state. it requires that the evaluation is context free!
#if BLT_DEBUG_LEVEL >= 2 #if BLT_DEBUG_LEVEL >= 2
const auto new_op = c.get_operator(node.pos);
if (!c.check(detail::debug::context_ptr)) if (!c.check(detail::debug::context_ptr))
{ {
print_mutate_stats(); print_mutate_stats();
BLT_ERROR("Old Op: {} got replaced with New Op: {}", program.get_name(old_op.id()).value_or("Unknown"),
program.get_name(new_op.id()).value_or("Unknown"));
throw std::runtime_error("Mutate Point tree check failed"); throw std::runtime_error("Mutate Point tree check failed");
} }
#endif #endif

13
src/tree.cpp
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@ -501,6 +501,7 @@ namespace blt::gp
tree_t& tree_t::get_thread_local(gp_program& program) tree_t& tree_t::get_thread_local(gp_program& program)
{ {
thread_local tree_t tree{program}; thread_local tree_t tree{program};
tree.clear(program);
return tree; return tree;
} }
@ -545,7 +546,7 @@ namespace blt::gp
if (bytes_expected != bytes_size) if (bytes_expected != bytes_size)
{ {
BLT_ERROR("Stack state: {}", values.size()); BLT_ERROR("Stack state: {}", values.size());
BLT_ERROR("Child tree bytes %ld vs expected %ld, difference: %ld", bytes_size, bytes_expected, BLT_ERROR("Child tree bytes {} vs expected {}, difference: {}", bytes_size, bytes_expected,
static_cast<ptrdiff_t>(bytes_expected) - static_cast<ptrdiff_t>(bytes_size)); static_cast<ptrdiff_t>(bytes_expected) - static_cast<ptrdiff_t>(bytes_size));
BLT_ERROR("Amount of bytes in stack doesn't match the number of bytes expected for the operations"); BLT_ERROR("Amount of bytes in stack doesn't match the number of bytes expected for the operations");
return false; return false;
@ -588,18 +589,18 @@ namespace blt::gp
if (v1 != v2) if (v1 != v2)
{ {
const auto vd = std::abs(v1 - v2); const auto vd = std::abs(v1 - v2);
BLT_ERROR("found %ld bytes expected %ld bytes, total difference: %ld", v1, v2, vd); BLT_ERROR("found {} bytes expected {} bytes, total difference: {}", v1, v2, vd);
BLT_ERROR("Total Produced %ld || Total Consumed %ld || Total Difference %ld", total_produced, total_consumed, BLT_ERROR("Total Produced {} || Total Consumed {} || Total Difference {}", total_produced, total_consumed,
std::abs(static_cast<blt::ptrdiff_t>(total_produced) - static_cast<blt::ptrdiff_t>(total_consumed))); std::abs(static_cast<blt::ptrdiff_t>(total_produced) - static_cast<blt::ptrdiff_t>(total_consumed)));
return false; return false;
} }
} }
catch (std::exception& e) catch (std::exception& e)
{ {
BLT_ERROR("Exception occurred \"%s\"", e.what()); BLT_ERROR("Exception occurred \"{}\"", e.what());
BLT_ERROR("Total Produced %ld || Total Consumed %ld || Total Difference %ld", total_produced, total_consumed, BLT_ERROR("Total Produced {} || Total Consumed {} || Total Difference {}", total_produced, total_consumed,
std::abs(static_cast<blt::ptrdiff_t>(total_produced) - static_cast<blt::ptrdiff_t>(total_consumed))); std::abs(static_cast<blt::ptrdiff_t>(total_produced) - static_cast<blt::ptrdiff_t>(total_consumed)));
BLT_ERROR("We failed at index %lu", index); BLT_ERROR("We failed at index {}", index);
return false; return false;
} }
return true; return true;

194
tests/2_type_drop_test.cpp Normal file
View File

@ -0,0 +1,194 @@
/*
* <Short Description>
* Copyright (C) 2025 Brett Terpstra
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "../examples/symbolic_regression.h"
#include <blt/gp/program.h>
#include <blt/logging/logging.h>
using namespace blt::gp;
std::atomic_uint64_t normal_construct = 0;
std::atomic_uint64_t ephemeral_construct = 0;
std::atomic_uint64_t normal_drop = 0;
std::atomic_uint64_t ephemeral_drop = 0;
std::atomic_uint64_t max_allocated = 0;
struct drop_type
{
float* m_value;
bool ephemeral = false;
drop_type() : m_value(new float(0))
{
++normal_construct;
}
explicit drop_type(const float silly) : m_value(new float(silly))
{
++normal_construct;
}
explicit drop_type(const float silly, bool) : m_value(new float(silly)), ephemeral(true)
{
// BLT_TRACE("Constructor with value %f", silly);
++ephemeral_construct;
}
[[nodiscard]] float value() const
{
return *m_value;
}
void drop() const
{
if (ephemeral)
{
std::cout << ("Ephemeral drop") << std::endl;
++ephemeral_drop;
}
else
++normal_drop;
delete m_value;
}
friend std::ostream& operator<<(std::ostream& os, const drop_type& dt)
{
os << dt.m_value;
return os;
}
};
struct context
{
float x, y;
};
prog_config_t config = prog_config_t()
.set_initial_min_tree_size(2)
.set_initial_max_tree_size(6)
.set_elite_count(2)
.set_crossover_chance(0.8)
.set_mutation_chance(0.1)
.set_reproduction_chance(0.1)
.set_max_generations(50)
.set_pop_size(500)
.set_thread_count(1);
example::symbolic_regression_t regression{691ul, config};
operation_t add{[](const drop_type a, const drop_type b) { return drop_type{a.value() + b.value()}; }, "add"};
operation_t addf{[](const float a, const float b) { return a + b; }, "addf"};
operation_t sub([](const drop_type a, const drop_type b) { return drop_type{a.value() - b.value()}; }, "sub");
operation_t subf([](const float a, const float b) { return a - b; }, "subf");
operation_t mul([](const drop_type a, const drop_type b) { return drop_type{a.value() * b.value()}; }, "mul");
operation_t mulf([](const float a, const float b) { return a * b; }, "mulf");
operation_t pro_div([](const drop_type a, const drop_type b) { return drop_type{b.value() == 0.0f ? 0.0f : a.value() / b.value()}; }, "div");
operation_t pro_divf([](const float a, const float b) { return b == 0.0f ? 0.0f : a / b; }, "divf");
operation_t op_sin([](const drop_type a) { return drop_type{std::sin(a.value())}; }, "sin");
operation_t op_sinf([](const float a) { return std::sin(a); }, "sinf");
operation_t op_cos([](const drop_type a) { return drop_type{std::cos(a.value())}; }, "cos");
operation_t op_cosf([](const float a) { return std::cos(a); }, "cosf");
operation_t op_exp([](const drop_type a) { return drop_type{std::exp(a.value())}; }, "exp");
operation_t op_expf([](const float a) { return std::exp(a); }, "expf");
operation_t op_log([](const drop_type a) { return drop_type{a.value() <= 0.0f ? 0.0f : std::log(a.value())}; }, "log");
operation_t op_logf([](const float a) { return a <= 0.0f ? 0.0f : std::log(a); }, "logf");
operation_t op_tof([](const drop_type a) { return a.value(); }, "to_f");
operation_t op_todrop([](const float a) { return drop_type{a}; }, "to_drop");
operation_t op_mixed_input([](const drop_type a, const float f)
{
return a.value() + f;
}, "mixed_input");
auto lit = operation_t([]()
{
return drop_type{regression.get_program().get_random().get_float(-1.0f, 1.0f), true};
}, "lit").set_ephemeral();
auto litf = operation_t([]()
{
return regression.get_program().get_random().get_float(-1.0f, 1.0f);
}, "litf").set_ephemeral();
operation_t op_x([](const context& context)
{
return drop_type{context.x};
}, "x");
operation_t op_xf([](const context& context)
{
return context.x;
}, "xf");
bool fitness_function(const tree_t& current_tree, fitness_t& fitness, size_t)
{
if (normal_construct - normal_drop > max_allocated)
max_allocated = normal_construct - normal_drop;
constexpr static double value_cutoff = 1.e15;
for (auto& fitness_case : regression.get_training_cases())
{
BLT_GP_UPDATE_CONTEXT(fitness_case);
auto val = current_tree.get_evaluation_ref<drop_type>(fitness_case);
const auto diff = std::abs(fitness_case.y - val.get().value());
if (diff < value_cutoff)
{
fitness.raw_fitness += diff;
if (diff <= 0.01)
fitness.hits++;
}
else
fitness.raw_fitness += value_cutoff;
}
fitness.standardized_fitness = fitness.raw_fitness;
fitness.adjusted_fitness = (1.0 / (1.0 + fitness.standardized_fitness));
return static_cast<size_t>(fitness.hits) == regression.get_training_cases().size();
}
int main()
{
operator_builder<context> builder{};
builder.build(add, sub, mul, pro_div, op_sin, op_cos, op_exp, op_log, op_mixed_input, lit, op_x, addf, subf, mulf, pro_divf, op_sinf, op_cosf,
op_expf, op_logf,
litf, op_xf, op_tof, op_todrop);
regression.get_program().set_operations(builder.grab());
auto& program = regression.get_program();
static auto sel = select_tournament_t{};
program.generate_initial_population(program.get_typesystem().get_type<drop_type>().id());
program.setup_generational_evaluation(fitness_function, sel, sel, sel);
while (!program.should_terminate())
{
BLT_TRACE("---------------\\{Begin Generation {}}---------------", program.get_current_generation());
BLT_TRACE("Creating next generation");
program.create_next_generation();
BLT_TRACE("Move to next generation");
program.next_generation();
BLT_TRACE("Evaluate Fitness");
program.evaluate_fitness();
}
// program.get_best_individuals<1>()[0].get().tree.print(program, std::cout, true, true);
regression.get_program().get_current_pop().clear();
regression.get_program().next_generation();
regression.get_program().get_current_pop().clear();
BLT_TRACE("Created {} times", normal_construct.load());
BLT_TRACE("Dropped {} times", normal_drop.load());
BLT_TRACE("Ephemeral created {} times", ephemeral_construct.load());
BLT_TRACE("Ephemeral dropped {} times", ephemeral_drop.load());
BLT_TRACE("Max allocated {} times", max_allocated.load());
}

28
tests/symbolic_regression_test.cpp
View File

@ -19,6 +19,7 @@
#include <fstream> #include <fstream>
#include <array> #include <array>
#include <sstream>
#include <blt/profiling/profiler_v2.h> #include <blt/profiling/profiler_v2.h>
static const auto SEED_FUNC = [] { return std::random_device()(); }; static const auto SEED_FUNC = [] { return std::random_device()(); };
@ -56,7 +57,7 @@ void run(const blt::gp::prog_config_t& config)
auto mut = mutation_calls.start_measurement(); auto mut = mutation_calls.start_measurement();
auto repo = reproduction_calls.start_measurement(); auto repo = reproduction_calls.start_measurement();
#endif #endif
BLT_TRACE("------------{Begin Generation %ld}------------", program.get_current_generation()); BLT_TRACE("------------\\{Begin Generation {}}------------", program.get_current_generation());
BLT_TRACE("Creating next generation"); BLT_TRACE("Creating next generation");
BLT_START_INTERVAL("Symbolic Regression", "Create Next Generation"); BLT_START_INTERVAL("Symbolic Regression", "Create Next Generation");
program.create_next_generation(); program.create_next_generation();
@ -71,7 +72,7 @@ void run(const blt::gp::prog_config_t& config)
BLT_END_INTERVAL("Symbolic Regress", "Evaluate Fitness"); BLT_END_INTERVAL("Symbolic Regress", "Evaluate Fitness");
BLT_START_INTERVAL("Symbolic Regress", "Fitness Print"); BLT_START_INTERVAL("Symbolic Regress", "Fitness Print");
const auto& stats = program.get_population_stats(); const auto& stats = program.get_population_stats();
BLT_TRACE("Avg Fit: %lf, Best Fit: %lf, Worst Fit: %lf, Overall Fit: %lf", BLT_TRACE("Avg Fit: {}, Best Fit: {}, Worst Fit: {}, Overall Fit: {}",
stats.average_fitness.load(std::memory_order_relaxed), stats.best_fitness.load(std::memory_order_relaxed), stats.average_fitness.load(std::memory_order_relaxed), stats.best_fitness.load(std::memory_order_relaxed),
stats.worst_fitness.load(std::memory_order_relaxed), stats.overall_fitness.load(std::memory_order_relaxed)); stats.worst_fitness.load(std::memory_order_relaxed), stats.overall_fitness.load(std::memory_order_relaxed));
BLT_END_INTERVAL("Symbolic Regress", "Fitness Print"); BLT_END_INTERVAL("Symbolic Regress", "Fitness Print");
@ -123,17 +124,8 @@ void do_run()
.set_pop_size(population_sizes) .set_pop_size(population_sizes)
.set_thread_count(0); .set_thread_count(0);
BLT_INFO_STREAM << "Run: Crossover ("; BLT_INFO("Run: Crossover ({}) Mutation ({}) Reproduction ({}) Elite ({}) Population Size ({})", crossover_chance,
BLT_INFO_STREAM << crossover_chance; mutation_chance, reproduction_chance, elite_amount, population_sizes);
BLT_INFO_STREAM << ") Mutation (";
BLT_INFO_STREAM << mutation_chance;
BLT_INFO_STREAM << ") Reproduction (";
BLT_INFO_STREAM << reproduction_chance;
BLT_INFO_STREAM << ") Elite (";
BLT_INFO_STREAM << elite_amount;
BLT_INFO_STREAM << ") Population Size (";
BLT_INFO_STREAM << population_sizes;
BLT_INFO_STREAM << ")" << "\n";
run(config); run(config);
results << "Run: Crossover ("; results << "Run: Crossover (";
@ -190,10 +182,10 @@ inline void there(blt::size_t)
int main() int main()
{ {
// blt::gp::thread_manager_t threads{ // blt::gp::thread_manager_t threads{
// std::thread::hardware_concurrency(), blt::gp::task_builder_t<test>::make_callable( // std::thread::hardware_concurrency(), blt::gp::task_builder_t<test>::make_callable(
// blt::gp::task_t{test::hello, hello}, // blt::gp::task_t{test::hello, hello},
// blt::gp::task_t{test::there, there} // blt::gp::task_t{test::there, there}
// ) // )
// }; // };
// threads.add_task(test::hello); // threads.add_task(test::hello);
@ -202,7 +194,7 @@ int main()
// threads.add_task(test::there); // threads.add_task(test::there);
// while (threads.has_tasks_left()) // while (threads.has_tasks_left())
// threads.execute(); // threads.execute();
for (int i = 0; i < 1; i++) for (int i = 0; i < 1; i++)
do_run(); do_run();