MOEAD_DE

Module: opytimizer.optimizers.multi_objective.evolutionary.moead

MOEA/D-DE class, inherited from Optimizer.

References: Li, H., & Zhang, Q. (2008). Multiobjective optimization problems with complicated Pareto sets, MOEA/D and NSGA-II. IEEE transactions on evolutionary computation, 13(2), 284-302.

Constructor

MOEAD_DE(params: Optional[Dict[str, Any]] = None, CR: Union[float, int] = 1.0, nr: int = 2, F: Union[float, int] = 0.5, neighborhood_prob: float = 0.9, mutation_operator=None, weight_vectors=None, decomposition_function: opytimizer.math.aggregation._BaseAggregation = None) -> None

Parameters

Parameter	Type	Default	Description
params	Optional[Dict[str, Any]]	None	—
CR	Union[float, int]	1.0	—
nr	int	2	—
F	Union[float, int]	0.5	—
neighborhood_prob	float	0.9	—
mutation_operator		None	—
weight_vectors		None	—
decomposition_function	opytimizer.math.aggregation._BaseAggregation	None	—

Methods

compile

compile(self, space: opytimizer.core.space._MultiObjectiveSpace, **kwargs) -> None

Compiles additional information that is used by this optimizer.

Parameters

Parameter	Type	Default	Description
space	opytimizer.core.space._MultiObjectiveSpace		A Space object containing meta-information.
kwargs			—

evaluate

evaluate(self, space: opytimizer.core.space._MultiObjectiveSpace, function: opytimizer.core.function.Function) -> None

Evaluates the fitness of the agents.

Parameters

Parameter	Type	Default	Description
space	opytimizer.core.space._MultiObjectiveSpace		Space containing agents and evaluation-related information.
function	opytimizer.core.function.Function		Function to evaluate the fitness of the agents.

update

update(self, space: opytimizer.core.space._MultiObjectiveSpace, function: opytimizer.core.function.Function) -> None

Updates the population using MOEA/D.

Parameters

Parameter	Type	Default	Description
space	opytimizer.core.space._MultiObjectiveSpace		Space containing agents and update-related information.
function	opytimizer.core.function.Function		Function to evaluate the fitness of the agents.