Package de.uka.ipd.sdq.simucomframework.variables.functions

Class GammaDistFunctionFromMoments

java.lang.Object
de.uka.ipd.sdq.simucomframework.variables.functions.AbstractProbDistFunction
de.uka.ipd.sdq.simucomframework.variables.functions.GammaDistFunctionFromMoments
All Implemented Interfaces:
IFunction
public class GammaDistFunctionFromMoments extends AbstractProbDistFunction
Gamma distribution with shape alpha > 0 and inverse scale parameter beta > 0 There is another way to write the gamma function with k = alpha and theta = 1/beta,

  • Constructor Details

    • GammaDistFunctionFromMoments

      public GammaDistFunctionFromMoments(de.uka.ipd.sdq.probfunction.math.IRandomGenerator randomGen, de.uka.ipd.sdq.probfunction.math.IPDFFactory factory)

  • Method Details

    • checkParameters

      public boolean checkParameters(List<Object> parameters)
      Checks the validity of the parameter. GammaDistFunctionFromMoments takes two parameters mean and c coefficient of variance mean needs to be larger than 0. c needs to be larger than 0.
      Parameters:
      parameters - A set of parameters to be processed
      Returns:
      true if the parameters fit to the functions preconditions, false otherwise

    • evaluate

      public Object evaluate(List<Object> parameters)
      Description copied from interface: IFunction
      Evaluate the functions result using the parameters given
      Parameters:
      parameters - Parameters for the function
      Returns:
      Value of the function