gov.sandia.cognition.statistics.distribution
Class WeibullDistribution.PDF

java.lang.Object
  gov.sandia.cognition.util.AbstractCloneableSerializable
      gov.sandia.cognition.statistics.AbstractDistribution<NumberType>
          gov.sandia.cognition.statistics.AbstractClosedFormUnivariateDistribution<Double>
              gov.sandia.cognition.statistics.AbstractClosedFormSmoothUnivariateDistribution
                  gov.sandia.cognition.statistics.distribution.WeibullDistribution
                      gov.sandia.cognition.statistics.distribution.WeibullDistribution.PDF

All Implemented Interfaces:

Evaluator<Double,Double>, Vectorizable, ScalarFunction<Double>, UnivariateScalarFunction, ClosedFormComputableDistribution<Double>, ClosedFormDistribution<Double>, ClosedFormUnivariateDistribution<Double>, ComputableDistribution<Double>, Distribution<Double>, DistributionWithMean<Double>, ProbabilityDensityFunction<Double>, ProbabilityFunction<Double>, SmoothUnivariateDistribution, UnivariateDistribution<Double>, UnivariateProbabilityDensityFunction, CloneableSerializable, Serializable, Cloneable

Enclosing class:

WeibullDistribution

public static class WeibullDistribution.PDF
extends WeibullDistribution
implements UnivariateProbabilityDensityFunction

PDF of the Weibull distribution

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class gov.sandia.cognition.statistics.distribution.WeibullDistribution

WeibullDistribution.CDF, WeibullDistribution.PDF

Field Summary

Fields inherited from class gov.sandia.cognition.statistics.distribution.WeibullDistribution

DEFAULT_SCALE, DEFAULT_SHAPE, scale, shape

Constructor Summary

WeibullDistribution.PDF()
Creates a new instance of WeibullDistribution

WeibullDistribution.PDF(double shape, double scale)
Creates a new instance of WeibullDistribution

WeibullDistribution.PDF(WeibullDistribution other)
Copy constructor

Method Summary

double	evaluate(double input) Produces a double output for the given double input
Double	evaluate(Double input) Evaluates the function on the given input and returns the output.
double	evaluateAsDouble(Double input) Evaluates the scalar function as a double.
WeibullDistribution.PDF	getProbabilityFunction() Gets the distribution function associated with this Distribution, either the PDF or PMF.
double	logEvaluate(double input) Evaluate the natural logarithm of the distribution function.
double	logEvaluate(Double input) Evaluate the natural logarithm of the distribution function.

Methods inherited from class gov.sandia.cognition.statistics.distribution.WeibullDistribution

clone, convertFromVector, convertToVector, getCDF, getMaxSupport, getMean, getMinSupport, getScale, getShape, getVariance, sample, setScale, setShape

Methods inherited from class gov.sandia.cognition.statistics.AbstractDistribution

sample

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface gov.sandia.cognition.statistics.SmoothUnivariateDistribution

getCDF, getMean

Methods inherited from interface gov.sandia.cognition.statistics.UnivariateDistribution

getMaxSupport, getMinSupport, getVariance

Methods inherited from interface gov.sandia.cognition.statistics.Distribution

sample, sample

Methods inherited from interface gov.sandia.cognition.math.matrix.Vectorizable

clone, convertFromVector, convertToVector

Constructor Detail

WeibullDistribution.PDF

public WeibullDistribution.PDF()

Creates a new instance of WeibullDistribution

WeibullDistribution.PDF

public WeibullDistribution.PDF(double shape,
                               double scale)

Creates a new instance of WeibullDistribution

Parameters:

shape - Shape parameter, must be greater than 0.0

scale - Scale parameter, must be greater than 0.0

WeibullDistribution.PDF

public WeibullDistribution.PDF(WeibullDistribution other)

Copy constructor

Parameters:

other - WeibullDistribution to copy

Method Detail

logEvaluate

public double logEvaluate(Double input)

Description copied from interface: ProbabilityFunction

Evaluate the natural logarithm of the distribution function. This is sometimes more efficient than evaluating the distribution function itself, and when evaluating the product of many independent or exchangeable samples.

Specified by:

logEvaluate in interface ProbabilityFunction<Double>

Returns:

Natural logarithm of the distribution function.

logEvaluate

public double logEvaluate(double input)

Description copied from interface: UnivariateProbabilityDensityFunction

Evaluate the natural logarithm of the distribution function. This is sometimes more efficient than evaluating the distribution function itself, and when evaluating the product of many independent or exchangeable samples.

Specified by:

logEvaluate in interface UnivariateProbabilityDensityFunction

Parameters:

input - The input value.

Returns:

The natural logarithm of the distribution function.

evaluate

public Double evaluate(Double input)

Description copied from interface: Evaluator

Evaluates the function on the given input and returns the output.

Specified by:

evaluate in interface Evaluator<Double,Double>

Parameters:

input - The input to evaluate.

Returns:

The output produced by evaluating the input.

evaluateAsDouble

public double evaluateAsDouble(Double input)

Description copied from interface: ScalarFunction

Evaluates the scalar function as a double.

Specified by:

evaluateAsDouble in interface ScalarFunction<Double>

Parameters:

input - The input value.

Returns:

The scalar output calculated from the given input.

evaluate

public double evaluate(double input)

Description copied from interface: UnivariateScalarFunction

Produces a double output for the given double input

Specified by:

evaluate in interface UnivariateScalarFunction

Parameters:

input - Input to the Evaluator

Returns:

output at the given input

getProbabilityFunction

public WeibullDistribution.PDF getProbabilityFunction()

Description copied from interface: ComputableDistribution

Gets the distribution function associated with this Distribution, either the PDF or PMF.

Specified by:

getProbabilityFunction in interface ComputableDistribution<Double>

Specified by:

getProbabilityFunction in interface ProbabilityDensityFunction<Double>

Specified by:

getProbabilityFunction in interface SmoothUnivariateDistribution

Specified by:

getProbabilityFunction in interface UnivariateProbabilityDensityFunction

Overrides:

getProbabilityFunction in class WeibullDistribution

Returns:

Distribution function associated with this Distribution.