com.rubecula.darwin.domain.helper
Interface FitnessFunction

All Superinterfaces:

net.sf.tostring0.Identifiable

All Known Implementing Classes:

FitnessFunction_, FitnessFunction_Math, FitnessFunction_Normal, FitnessFunction_PseudoPoisson, FitnessFunction_ScaledNormal

public interface FitnessFunction
extends net.sf.tostring0.Identifiable

Author:

Robin Hillyard

Field Summary

static java.lang.String	PREFIX_VAR_RPN $
static java.lang.String	VAR_SHAPE_FACTOR shapeFactor
static java.lang.String	VAR_TARGET target
static java.lang.String	VAR_VALUE value

Method Summary

double

getFitness(double value, double target, double factor)

Methods inherited from interface net.sf.tostring0.Identifiable

getIdentifier

Field Detail

VAR_SHAPE_FACTOR

static final java.lang.String VAR_SHAPE_FACTOR

shapeFactor

See Also:

Constant Field Values

VAR_TARGET

static final java.lang.String VAR_TARGET

target

See Also:

Constant Field Values

VAR_VALUE

static final java.lang.String VAR_VALUE

value

See Also:

Constant Field Values

PREFIX_VAR_RPN

static final java.lang.String PREFIX_VAR_RPN

$

See Also:

Constant Field Values

Method Detail

getFitness

double getFitness(double value,
                  double target,
                  double factor)
                  throws FitnessException

Parameters:

value - the variate value

target - the ideal value of the variate (typically the mean value for a normal distribution).

factor - a shape factor for the distribution (typically the standard deviation for a normal distribution).

Returns:

the probability density function for the variate value value given a continuous distribution with ideal value: target and shape factor: factor.

Throws:

FitnessException