MutatorNumeric {miesmuschel} | R Documentation |
Numeric Mutator Base Class
Description
Base class for mutation operations on numeric and integer valued individuals, inheriting from Mutator
.
MutatorNumeric
operators perform mutation on numeric (integer and real valued) individuals. Inheriting
operators implement the private $.mutate_numeric()
function that is called once for each individual
and is given a numeric vector.
Inheriting
MutatorNumeric
is an abstract base class and should be inherited from. Inheriting classes should implement the private $.mutate_numeric()
function. During $operate()
, the $.mutate_numeric()
function is called once for each individual, with the parameters values
(the
individual as a single numeric
vector), lowers
and uppers
(numeric
vectors, the lower and upper bounds for each component of values
). Typically,
$initialize()
should also be overloaded.
MutatorNumeric
s that perform real-valued operations, such as e.g. MutatorGauss
, operate on integers by widening the lower and upper bounds
of integer components by 0.5, applying their operation, and rounding resulting values to the nearest integer (while always staying inside bounds).
Super classes
miesmuschel::MiesOperator
-> miesmuschel::Mutator
-> MutatorNumeric
Methods
Public methods
Inherited methods
Method new()
Initialize base class components of the MutatorNumeric
.
Usage
MutatorNumeric$new( param_classes = c("ParamInt", "ParamDbl"), param_set = ps(), packages = character(0), dict_entry = NULL, own_param_set = quote(self$param_set) )
Arguments
param_classes
(
character
)
Classes of parameters that the operator can handle. May contain any of"ParamInt"
,"ParamDbl"
. Default is both of them.
The$param_classes
field will reflect this value.param_set
(
ParamSet
|list
ofexpression
)
Strategy parameters of the operator. This should be created by the subclass and given tosuper$initialize()
. If this is aParamSet
, it is used as theMiesOperator
'sParamSet
directly. Otherwise it must be alist
of expressions e.g. created byalist()
that evaluate toParamSet
s, possibly referencingself
andprivate
. TheseParamSet
are then combined using aParamSetCollection
. Default is the emptyParamSet
.
The$param_set
field will reflect this value.packages
(
character
) Packages that need to be loaded for the operator to function. This should be declared so these packages can be loaded when operators run on parallel instances. Default ischaracter(0)
.
The$packages
field will reflect this values.dict_entry
(
character(1)
|NULL
)
Key of the class inside theDictionary
(usually one ofdict_mutators
,dict_recombinators
,dict_selectors
), where it can be retrieved using a short access function. May beNULL
if the operator is not entered in a dictionary.
The$dict_entry
field will reflect this value.own_param_set
(
language
)
An expression that evaluates to aParamSet
indicating the configuration parameters that are entirely owned by this operator class (and not proxied from a construction argument object). This should bequote(self$param_set)
(the default) when theparam_set
argument is not a list of expressions.
Method clone()
The objects of this class are cloneable with this method.
Usage
MutatorNumeric$clone(deep = FALSE)
Arguments
deep
Whether to make a deep clone.
See Also
Other base classes:
Filtor
,
FiltorSurrogate
,
MiesOperator
,
Mutator
,
MutatorDiscrete
,
OperatorCombination
,
Recombinator
,
RecombinatorPair
,
Scalor
,
Selector
,
SelectorScalar
Other mutators:
Mutator
,
MutatorDiscrete
,
OperatorCombination
,
dict_mutators_cmpmaybe
,
dict_mutators_erase
,
dict_mutators_gauss
,
dict_mutators_maybe
,
dict_mutators_null
,
dict_mutators_proxy
,
dict_mutators_sequential
,
dict_mutators_unif