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fix: 🚑 first all employed bees then all onlooker bees

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Ahmet Kaan GÜMÜŞ 2024-11-20 00:20:40 +03:00
parent d694cea4a5
commit b0fb8f40d8
5 changed files with 117 additions and 95 deletions
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104
artificial_bee_colony/src/bee.rs
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@ -2,18 +2,18 @@ use rand::Rng;
use crate::food::FoodSource;
pub enum Bee {}
pub struct Bee {}
impl Bee {
pub fn employed_bee(
food_sources: &mut [FoodSource],
index: usize,
food_source_index: usize,
decision_variable_count: usize,
upper_bound: f64,
lower_bound: f64,
) {
send_bee(
Self::send_bee(
food_sources,
index,
food_source_index,
decision_variable_count,
upper_bound,
lower_bound,
@ -22,33 +22,35 @@ impl Bee {
pub fn onlooker_bee(
food_sources: &mut [FoodSource],
index: usize,
food_source_index: usize,
total_fitness: f64,
decision_variable_count: usize,
upper_bound: f64,
lower_bound: f64,
) {
let fitness_for_index = food_sources[index].fitness_calculation;
) -> bool {
let fitness_for_index = food_sources[food_source_index].fitness_calculation;
if fitness_for_index / total_fitness <= rand::thread_rng().gen_range(0.0..=1.0) {
send_bee(
Self::send_bee(
food_sources,
index,
food_source_index,
decision_variable_count,
upper_bound,
lower_bound,
);
return true;
}
false
}
pub fn scout_bee(
food_sources: &mut [FoodSource],
most_tried_index: usize,
most_tried_food_source_index: usize,
limit: u128,
lower_bound: f64,
upper_bound: f64,
decision_variable_count: usize,
) {
if food_sources[most_tried_index].try_counter > limit {
if food_sources[most_tried_food_source_index].try_counter > limit {
let mut coordinates_for_new = vec![];
for _ in 0..decision_variable_count {
let random = lower_bound
@ -56,41 +58,51 @@ impl Bee {
coordinates_for_new.push(random);
}
let new_food_source = FoodSource::new(coordinates_for_new);
food_sources[most_tried_index] = new_food_source;
food_sources[most_tried_food_source_index] = new_food_source;
}
}
fn send_bee(
food_sources: &mut [FoodSource],
food_source_index: usize,
decision_variable_count: usize,
upper_bound: f64,
lower_bound: f64,
) {
let mut different_food_source_index = rand::thread_rng().gen_range(0..food_sources.len());
while different_food_source_index == food_source_index {
different_food_source_index = rand::thread_rng().gen_range(0..food_sources.len());
}
let decision_variable_index = rand::thread_rng().gen_range(0..decision_variable_count);
let randomness = rand::thread_rng().gen_range(-1.0..=1.0);
let mut candidate_decision_variable = food_sources[food_source_index].coordinates
[decision_variable_index]
+ randomness
* (food_sources[food_source_index].coordinates[decision_variable_index]
- food_sources[different_food_source_index].coordinates
[decision_variable_index]);
if candidate_decision_variable > upper_bound {
candidate_decision_variable = upper_bound;
}
if candidate_decision_variable < lower_bound {
candidate_decision_variable = lower_bound;
}
let candidate_food_source = {
let mut original_decision_variables =
food_sources[food_source_index].coordinates.clone();
original_decision_variables[decision_variable_index] = candidate_decision_variable;
let candidate_decision_variables = original_decision_variables;
FoodSource::new(candidate_decision_variables)
};
food_sources[food_source_index].try_counter += 1;
if candidate_food_source.fitness_calculation
> food_sources[food_source_index].fitness_calculation
{
food_sources[food_source_index] = candidate_food_source;
food_sources[food_source_index].try_counter = 0;
}
}
}
fn send_bee(
food_sources: &mut [FoodSource],
index: usize,
decision_variable_count: usize,
upper_bound: f64,
lower_bound: f64,
) {
let mut different_food_source_index = rand::thread_rng().gen_range(0..food_sources.len());
while different_food_source_index == index {
different_food_source_index = rand::thread_rng().gen_range(0..food_sources.len());
}
let selected_coordinate_index = rand::thread_rng().gen_range(0..decision_variable_count);
let randomness = rand::thread_rng().gen_range(-1.0..=1.0);
let mut candidate_one_index = food_sources[index].coordinates[selected_coordinate_index]
+ randomness
* (food_sources[index].coordinates[selected_coordinate_index]
- food_sources[different_food_source_index].coordinates[selected_coordinate_index]);
if candidate_one_index > upper_bound {
candidate_one_index = upper_bound;
}
if candidate_one_index < lower_bound {
candidate_one_index = lower_bound;
}
let mut candidate_coordinates = food_sources[index].coordinates.clone();
candidate_coordinates[selected_coordinate_index] = candidate_one_index;
let candidate = FoodSource::new(candidate_coordinates);
food_sources[index].try_counter += 1;
if candidate.fitness_calculation > food_sources[index].fitness_calculation {
food_sources[index] = candidate;
food_sources[index].try_counter = 0;
}
}