[ ]:
from jmetal.algorithm.multiobjective.nsgaii import DynamicNSGAII
from jmetal.operator import PolynomialMutation, SBXCrossover
from jmetal.problem.multiobjective.fda import FDA2
from jmetal.util.observable import TimeCounter
from jmetal.util.observer import PlotFrontToFileObserver, WriteFrontToFileObserver
from jmetal.util.termination_criterion import StoppingByEvaluations
problem = FDA2()
time_counter = TimeCounter(delay=1)
time_counter.observable.register(problem)
time_counter.start()
max_evaluations = 25000
algorithm = DynamicNSGAII(
problem=problem,
population_size=100,
offspring_population_size=100,
mutation=PolynomialMutation(probability=1.0 / problem.number_of_variables, distribution_index=20),
crossover=SBXCrossover(probability=1.0, distribution_index=20),
termination_criterion=StoppingByEvaluations(max=max_evaluations)
)
algorithm.observable.register(observer=PlotFrontToFileObserver('front_plot'))
algorithm.observable.register(observer=WriteFrontToFileObserver('front_files'))
algorithm.run()
jmetal.algorithm.multiobjective.nsgaii.
DynamicNSGAII
(problem: jmetal.core.problem.DynamicProblem[~S][S], population_size: int, offspring_population_size: int, mutation: jmetal.core.operator.Mutation, crossover: jmetal.core.operator.Crossover, selection: jmetal.core.operator.Selection = <jmetal.operator.selection.BinaryTournamentSelection object>, termination_criterion: jmetal.util.termination_criterion.TerminationCriterion = <jmetal.util.termination_criterion.StoppingByEvaluations object>, population_generator: Generator = <jmetal.util.generator.RandomGenerator object>, population_evaluator: jmetal.util.evaluator.Evaluator = <jmetal.util.evaluator.SequentialEvaluator object>, dominance_comparator: jmetal.util.comparator.DominanceComparator = <jmetal.util.comparator.DominanceComparator object>)[source]¶Bases: jmetal.algorithm.multiobjective.nsgaii.NSGAII
, jmetal.core.algorithm.DynamicAlgorithm