Overcome

Overcome is a minimalist evolutive algorithm (EA) framework. It's designed to have an API as simple as possible, yet allow beginners to try their hand at solving problems with EA.

Sample

from Environment import *
from SimpleGeneticData import *
from IndependentFitnessEvaluator import *


def create_genetic_data():
    genetic_data = SimpleGeneticData()
    genetic_data["x"] = 10.
    genetic_data["y"] = -10.
    return genetic_data


def evaluate_fitness(individual, population):
    x = individual["x"]
    y = individual["y"]
    return -(x * x) - (y * y)


if __name__ == "__main__":
    initial_data = create_genetic_data()

    fitness_evaluator = IndependentFitnessEvaluator(
        evaluation_function=evaluate_fitness)

    environment = Environment(
        genetic_data=initial_data,
        fitness_evaluator=fitness_evaluator)

    population = environment.simulate(
        individual_count=1000,
        generation_count=1000,
        elimination_ratio=0.2,
        mutation_rate=0.01)

    print("best individual = " + str(population[0]))