org.apache.mahout.math.jet.random
Class Gamma

java.lang.Object
  extended by org.apache.mahout.math.PersistentObject
      extended by org.apache.mahout.math.jet.random.AbstractDistribution
          extended by org.apache.mahout.math.jet.random.AbstractContinousDistribution
              extended by org.apache.mahout.math.jet.random.Gamma
All Implemented Interfaces:
java.io.Serializable, java.lang.Cloneable, DoubleFunction, IntFunction, UnaryFunction

Deprecated. until unit tests are in place. Until this time, this class/interface is unsupported.

@Deprecated
public class Gamma
extends AbstractContinousDistribution

See Also:
Serialized Form

Field Summary
 
Fields inherited from class org.apache.mahout.math.jet.random.AbstractDistribution
randomGenerator
 
Constructor Summary
Gamma(double alpha, double lambda, RandomEngine randomGenerator)
          Deprecated. Constructs a Gamma distribution.
 
Method Summary
 double cdf(double x)
          Deprecated. Returns the cumulative distribution function.
 double nextDouble()
          Deprecated. Returns a random number from the distribution.
 double nextDouble(double alpha, double lambda)
          Deprecated. Returns a random number from the distribution; bypasses the internal state.
 double pdf(double x)
          Deprecated. Returns the probability distribution function.
 void setState(double alpha, double lambda)
          Deprecated. Sets the mean and variance.
static double staticNextDouble(double alpha, double lambda)
          Deprecated. Returns a random number from the distribution.
 java.lang.String toString()
          Deprecated. Returns a String representation of the receiver.
 
Methods inherited from class org.apache.mahout.math.jet.random.AbstractDistribution
apply, apply, clone, getRandomGenerator, makeDefaultGenerator, nextByte, nextChar, nextFloat, nextInt, nextLong, setRandomGenerator
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

Gamma

public Gamma(double alpha,
             double lambda,
             RandomEngine randomGenerator)
Deprecated. 
Constructs a Gamma distribution. Example: alpha=1.0, lambda=1.0.

Throws:
java.lang.IllegalArgumentException - if alpha <= 0.0 || lambda <= 0.0.
Method Detail

cdf

public double cdf(double x)
Deprecated. 
Returns the cumulative distribution function.


nextDouble

public double nextDouble()
Deprecated. 
Returns a random number from the distribution.

Specified by:
nextDouble in class AbstractDistribution

nextDouble

public double nextDouble(double alpha,
                         double lambda)
Deprecated. 
Returns a random number from the distribution; bypasses the internal state.


pdf

public double pdf(double x)
Deprecated. 
Returns the probability distribution function.


setState

public void setState(double alpha,
                     double lambda)
Deprecated. 
Sets the mean and variance.

Throws:
java.lang.IllegalArgumentException - if alpha <= 0.0 || lambda <= 0.0.

staticNextDouble

public static double staticNextDouble(double alpha,
                                      double lambda)
Deprecated. 
Returns a random number from the distribution.

Throws:
java.lang.IllegalArgumentException - if alpha <= 0.0 || lambda <= 0.0.

toString

public java.lang.String toString()
Deprecated. 
Returns a String representation of the receiver.

Overrides:
toString in class java.lang.Object


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