com.rubecula.darwin.domain.genetics
Class Mortality_Reaper

java.lang.Object
  net.sf.tostring0.AToString
      com.rubecula.darwin.domain.genetics.Mortality_
          com.rubecula.darwin.domain.genetics.Mortality_Reaper

All Implemented Interfaces:

Mortality, net.sf.tostring0.IToString

public final class Mortality_Reaper
extends Mortality_

Lifespan: permanent. This default implementation of Mortality provides a basic and reasonable calculation of mortality. The infant mortality can be specified through the constructor (it defaults to 20%).

Version:

$Revision: 1.22 $

Author:

Robin Hillyard

Field Summary

static double

INFANT_MORTALITY_DEFAULT 0.2

Fields inherited from class com.rubecula.darwin.domain.genetics.Mortality_

LOG

Fields inherited from interface net.sf.tostring0.IToString

ANGBR_OPEN, ANGBRA_CLSE, BRA_CLSE, BRA_OPEN, BRCE_OPEN, BRCS_CLSE, COLON, LIST_SEPARATOR, MAX_ELEMENTS_DEFAULT, S_MT, S_PERCENT, SEPARATOR, SPACE

Constructor Summary

Mortality_Reaper(org.apache.commons.math.random.RandomGenerator random)
Secondary constructor using random for random numbers and invoking the constructor Mortality_Reaper(RandomGenerator, double).

Mortality_Reaper(org.apache.commons.math.random.RandomGenerator random, double infantMortality)
Secondary constructor using random for random numbers and invoking the constructor Mortality_Reaper(RandomGenerator, Number, Number).

Mortality_Reaper(org.apache.commons.math.random.RandomGenerator random, java.lang.Number infantMortality, java.lang.Number actuarialFactor)
Primary constructor.

Method Summary

protected double

calculateAgeViabilityFactor(int age) Subclasses where viability depends on age must override this method.

Methods inherited from class com.rubecula.darwin.domain.genetics.Mortality_

calculateMortality, calculateViability, equals, getBias, getRandom, hashCode, isMarked, setBias

Methods inherited from class net.sf.tostring0.AToString

toString, toString, toStringBrief, toStringId

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

INFANT_MORTALITY_DEFAULT

public static final double INFANT_MORTALITY_DEFAULT

0.2

See Also:

Constant Field Values

Constructor Detail

Mortality_Reaper

public Mortality_Reaper(org.apache.commons.math.random.RandomGenerator random)

Secondary constructor using random for random numbers and invoking the constructor Mortality_Reaper(RandomGenerator, double).

Parameters:

random -

Mortality_Reaper

public Mortality_Reaper(org.apache.commons.math.random.RandomGenerator random,
                        double infantMortality)

Secondary constructor using random for random numbers and invoking the constructor Mortality_Reaper(RandomGenerator, Number, Number).

Parameters:

random -

infantMortality -

Mortality_Reaper

public Mortality_Reaper(org.apache.commons.math.random.RandomGenerator random,
                        java.lang.Number infantMortality,
                        java.lang.Number actuarialFactor)

Primary constructor.

Parameters:

random - the random number generator to use

infantMortality - this is the probability of dying in the first year.

actuarialFactor - this is the factor by which the probability of dying increases annually.

Method Detail

calculateAgeViabilityFactor

protected double calculateAgeViabilityFactor(int age)

Description copied from class: Mortality_

Subclasses where viability depends on age must override this method. TEST

Overrides:

calculateAgeViabilityFactor in class Mortality_

Parameters:

age -

Returns:

if age==0 then 1 - infantMortality
else if age==1 then 1
else e ^ ((1-age) * actuarialFactor