optuna.distributions.CategoricalDistribution
- class optuna.distributions.CategoricalDistribution(choices)[source]
A categorical distribution.
This object is instantiated by
suggest_categorical()
, and passed tosamplers
in general.- Parameters:
choices (Sequence[CategoricalChoiceType]) – Parameter value candidates.
choices
must have one element at least.
Note
Not all types are guaranteed to be compatible with all storages. It is recommended to restrict the types of the choices to
None
,bool
,int
,float
andstr
.- choices
Parameter value candidates.
Methods
single
()Test whether the range of this distribution contains just a single value.
to_external_repr
(param_value_in_internal_repr)Convert internal representation of a parameter value into external representation.
to_internal_repr
(param_value_in_external_repr)Convert external representation of a parameter value into internal representation.
- to_external_repr(param_value_in_internal_repr)[source]
Convert internal representation of a parameter value into external representation.