ec.es
Class ESSelection
java.lang.Object
ec.BreedingSource
ec.SelectionMethod
ec.es.ESSelection
- All Implemented Interfaces:
- java.lang.Cloneable, Prototype, RandomChoiceChooser, java.io.Serializable, Setup
- public class ESSelection
- extends SelectionMethod
ESSelection is a special SelectionMethod designed to be used with
evolutionary strategies-type breeders.
The rule is simple: if your pipeline returns N children when
you called it, ESSelection objects must have been called exactly
N times (selecting N children altogether in that pass).
No more, no less. You can use other selection methods (Tournament
Selection is a good choice) to fill the slack.
Default Base
es.select
- See Also:
- Serialized Form
Method Summary |
Parameter |
defaultBase()
Returns the default base for this prototype. |
int |
produce(int subpopulation,
EvolutionState state,
int thread)
An alternative form of "produce" special to Selection Methods;
selects an individual from the given subpopulation and
returns its position in that subpopulation. |
int |
produce(int min,
int max,
int start,
int subpopulation,
Individual[] inds,
EvolutionState state,
int thread)
Produces n individuals from the given subpopulation
and puts them into inds[start...start+n-1],
where n = Min(Max(q,min),max), where q is the "typical" number of
individuals the BreedingSource produces in one shot, and returns
n. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
P_ESSELECT
public static final java.lang.String P_ESSELECT
- See Also:
- Constant Field Values
ESSelection
public ESSelection()
defaultBase
public Parameter defaultBase()
- Description copied from interface:
Prototype
- Returns the default base for this prototype.
This should generally be implemented by building off of the static base()
method on the DefaultsForm object for the prototype's package. This should
be callable during setup(...).
produce
public int produce(int subpopulation,
EvolutionState state,
int thread)
- Description copied from class:
SelectionMethod
- An alternative form of "produce" special to Selection Methods;
selects an individual from the given subpopulation and
returns its position in that subpopulation.
- Specified by:
produce
in class SelectionMethod
produce
public int produce(int min,
int max,
int start,
int subpopulation,
Individual[] inds,
EvolutionState state,
int thread)
throws java.lang.CloneNotSupportedException
- Description copied from class:
BreedingSource
- Produces n individuals from the given subpopulation
and puts them into inds[start...start+n-1],
where n = Min(Max(q,min),max), where q is the "typical" number of
individuals the BreedingSource produces in one shot, and returns
n. max must be >= min, and min must be >= 1. For example, crossover
might typically produce two individuals, tournament selection might typically
produce a single individual, etc.
- Overrides:
produce
in class SelectionMethod
- Throws:
java.lang.CloneNotSupportedException