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CrossEntropyContextUpdateLevel Method

Updates the performance level for the current iteration of a CrossEntropyProgram executing in this context and determines the corresponding elite sample.

Namespace:  Novacta.Analytics.Advanced
Assembly:  Novacta.Analytics (in Novacta.Analytics.dll) Version: 2.0.0
Syntax
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protected abstract double UpdateLevel(
	DoubleMatrix performances,
	DoubleMatrix sample,
	EliteSampleDefinition eliteSampleDefinition,
	double rarity,
	out DoubleMatrix eliteSample
)

Parameters

performances
Type: Novacta.AnalyticsDoubleMatrix
The performances of the points in the current sample.
sample
Type: Novacta.AnalyticsDoubleMatrix
The current sample.
eliteSampleDefinition
Type: Novacta.Analytics.AdvancedEliteSampleDefinition
The elite sample mode.
rarity
Type: SystemDouble
The rarity applied to define the elite sample.
eliteSample
Type: Novacta.AnalyticsDoubleMatrix
The elite sample.

Return Value

Type: Double
The performance level for the current iteration.
Remarks

Method UpdateLevel is intended to be responsible for sorting the performances, compute the corresponding performance level for the current iteration and return the elite sample. As a consequence, a context should also give its definition of elite sample points, by overriding property EliteSampleDefinition.

See Also