RareEventProbabilityEstimationContextUpdateLevel Method

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

Definition

Namespace: Novacta.Analytics.Advanced
Assembly: Novacta.Analytics (in Novacta.Analytics.dll) Version: 2.1.0+428f3840cfab98dda567bb0ed350b302533e273a

C#

protected override sealed double UpdateLevel(
	DoubleMatrix performances,
	DoubleMatrix sample,
	EliteSampleDefinition eliteSampleDefinition,
	double rarity,
	out DoubleMatrix eliteSample
)

VB

Protected Overrides NotOverridable Function UpdateLevel ( 
	performances As DoubleMatrix,
	sample As DoubleMatrix,
	eliteSampleDefinition As EliteSampleDefinition,
	rarity As Double,
	<OutAttribute> ByRef eliteSample As DoubleMatrix
) As Double

C++

protected:
virtual double UpdateLevel(
	DoubleMatrix^ performances, 
	DoubleMatrix^ sample, 
	EliteSampleDefinition eliteSampleDefinition, 
	double rarity, 
	[OutAttribute] DoubleMatrix^% eliteSample
) override sealed

F#

abstract UpdateLevel : 
        performances : DoubleMatrix * 
        sample : DoubleMatrix * 
        eliteSampleDefinition : EliteSampleDefinition * 
        rarity : float * 
        eliteSample : DoubleMatrix byref -> float 
override UpdateLevel : 
        performances : DoubleMatrix * 
        sample : DoubleMatrix * 
        eliteSampleDefinition : EliteSampleDefinition * 
        rarity : float * 
        eliteSample : DoubleMatrix byref -> float

Parameters

performances DoubleMatrix: The performances of the points in the current sample.
sample DoubleMatrix: The current sample.
eliteSampleDefinition EliteSampleDefinition: The elite sample mode.
rarity Double: The rarity applied to define the elite sample.
eliteSample DoubleMatrix: The elite sample.

Return Value

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.

Exceptions

ArgumentNullException

performances is null.
-or-
sample is null.