public class DirichletMRGParams extends DiMRGParams
DiMRGParams
,
FastDirichletMRGParams
Constructor and Description |
---|
DirichletMRGParams(double... alpha)
Constructor which creates a new hyperparameter vector for a Dirichlet
random generator.
|
DirichletMRGParams(double alpha,
int n)
Constructor which creates a new hyperparameter vector for a Dirichlet
random generator.
|
DirichletMRGParams(int start,
int end,
double... alpha)
Constructor which creates a new hyperparameter vector for a Dirichlet
random generator.
|
Modifier and Type | Method and Description |
---|---|
int |
getDimension()
Returns the dimension of the hyperparameter vector of the underlying
Dirichlet distribution and therefore the dimension of the generated
random array.
|
double |
getHyperparameter(int i)
Returns the value at position
i of the hyperparameter vector
of the underlying Dirichlet distribution. |
double |
getSumOfHyperparameter()
Returns the sum of the hyperparameters (entries of the hyperparameter
vector) of the underlying Dirichlet distribution.
|
public DirichletMRGParams(double alpha, int n) throws IllegalArgumentException
alpha
- the value for the hyperparameter vectorn
- the dimension of the hyperparameter vectorIllegalArgumentException
- if n
is chosen incorrectly (has to be greater
than 2) or if alpha
is chosen incorrectly (has
to be positive)FastDirichletMRGParams.FastDirichletMRGParams(double)
public DirichletMRGParams(double... alpha) throws IllegalArgumentException
alpha
- the hyperparameter vectorIllegalArgumentException
- if at least one of the hyperparameters is not positivepublic DirichletMRGParams(int start, int end, double... alpha) throws IllegalArgumentException
start
- start index (inclusive)end
- end index (exclusive)alpha
- the hyperparameter vectorIllegalArgumentException
- if at least one of the hyperparameters is not positivepublic int getDimension()
DiMRGParams
getDimension
in class DiMRGParams
public double getHyperparameter(int i)
DiMRGParams
i
of the hyperparameter vector
of the underlying Dirichlet distribution.getHyperparameter
in class DiMRGParams
i
- the position of the hyperparameter vectori
of the hyperparameter vector
of the underlying Dirichlet distributionpublic double getSumOfHyperparameter()