saealib.IndividualBasedStrategy

class saealib.IndividualBasedStrategy(evaluation_ratio=0.1)

ベースクラス: OptimizationStrategy

Individual-based strategy.

パラメータ:

evaluation_ratio (float)

Methods

__init__	Initialize IndividualBasedStrategy.
build_graph	Build the canonical individual-based strategy graph.
build_pipeline	Return the strategy's high-level Pipeline description.
contract	Return the strategy contract.
step	Score all offspring with the surrogate, then true-evaluate the top fraction.

Method Details

IndividualBasedStrategy.__init__(evaluation_ratio=0.1)

Initialize IndividualBasedStrategy.

パラメータ:

evaluation_ratio (float) -- Ratio of offspring selected for true objective evaluation. The top evaluation_ratio fraction of offspring are evaluated with the real objective function; the rest are discarded after surrogate scoring. The number of neighbors for local surrogate fitting is now configured on the SurrogateManager (e.g. LocalSurrogateManager).

IndividualBasedStrategy.build_graph(provider)

Build the canonical individual-based strategy graph.

パラメータ:

provider (ComponentProvider)

戻り値の型:

ComponentGraph

IndividualBasedStrategy.build_pipeline(provider)

Return the strategy's high-level Pipeline description.

パラメータ:

provider (ComponentProvider)

戻り値の型:

Pipeline

IndividualBasedStrategy.contract()

Return the strategy contract.

戻り値の型:

ComponentContract

IndividualBasedStrategy.step(ctx, provider)

Score all offspring with the surrogate, then true-evaluate the top fraction.

Rebuilds the pipeline each call so component/parameter changes take effect immediately.

パラメータ:

• ctx (OptimizationState) -- Current optimization context.

• provider (ComponentProvider) -- Component provider.

戻り値の型:

OptimizationState