saealib.IndividualBasedStrategy#

class saealib.IndividualBasedStrategy(evaluation_ratio=0.1)[source]#

Individual-based strategy.

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)[source]#

Initialize IndividualBasedStrategy.

Parameters:: 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)[source]#

Build the canonical individual-based strategy graph.

IndividualBasedStrategy.build_pipeline(provider)#

Return the strategy’s high-level Pipeline description.

IndividualBasedStrategy.contract()#

Return the strategy contract.

IndividualBasedStrategy.step(ctx, provider)[source]#

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

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

Parameters:

Return type:

OptimizationState