MOEAD
Module: opytimizer.optimizers.multi_objective.evolutionary.moead
MOEAD class, inherited from Optimizer.
References: Zhang, Q., & Li, H. (2007). MOEA/D: A multiobjective evolutionary algorithm based on decomposition. IEEE Transactions on evolutionary computation, 11(6), 712-731.
Constructor
MOEAD(params: Optional[Dict[str, Any]] = None, crossover_operator=None, mutation_operator=None, weight_vectors=None, neighborhood_size: int = None, decomposition_method: opytimizer.math.aggregation._BaseAggregation = None) -> None
Parameters
| Parameter | Type | Default | Description |
|---|---|---|---|
params | Optional[Dict[str, Any]] | None | — |
crossover_operator | None | — | |
mutation_operator | None | — | |
weight_vectors | None | — | |
neighborhood_size | int | None | — |
decomposition_method | opytimizer.math.aggregation._BaseAggregation | None | — |
Methods
compile
compile(self, space: opytimizer.core.space._MultiObjectiveSpace)
Compiles additional information that is used by this optimizer.
This method is called before the optimization procedure and makes sure that the additional variable is available as a property.
Parameters
| Parameter | Type | Default | Description |
|---|---|---|---|
space | opytimizer.core.space._MultiObjectiveSpace | — |
evaluate
evaluate(self, space: opytimizer.core.space._MultiObjectiveSpace, function: opytimizer.core.function.Function) -> None
Evaluates the search space according to the objective function.
Parameters
| Parameter | Type | Default | Description |
|---|---|---|---|
space | opytimizer.core.space._MultiObjectiveSpace | A Space object that will be evaluated. | |
function | opytimizer.core.function.Function | A Function object serving as an objective function. |
update
update(self, space: opytimizer.core.space._MultiObjectiveSpace, function: opytimizer.core.function.Function) -> None
Updates the agents' position array.
As each child has a different procedure of update, you will need to implement it directly on its class.
Parameters
| Parameter | Type | Default | Description |
|---|---|---|---|
space | opytimizer.core.space._MultiObjectiveSpace | — | |
function | opytimizer.core.function.Function | — |