Namespaces

Types in MathNet.Numerics.Distributions

Type Exponential

Namespace MathNet.Numerics.Distributions

Interfaces IContinuousDistribution

Continuous Univariate Exponential distribution. The exponential distribution is a distribution over the real numbers parameterized by one non-negative parameter..

Constructors

Static Functions

Methods

Properties

Public Constructors

Exponential(double rate, Random randomSource)

Initializes a new instance of the Exponential class.
Parameters
double rate

The rate (λ) parameter of the distribution. Range: λ ≥ 0.

Random randomSource

The random number generator which is used to draw random samples.

Exponential(double rate)

Initializes a new instance of the Exponential class.
Parameters
double rate

The rate (λ) parameter of the distribution. Range: λ ≥ 0.

Public Static Functions

double CDF(double rate, double x)

Computes the cumulative distribution (CDF) of the distribution at x, i.e. P(X ≤ x).
Parameters
double rate

The rate (λ) parameter of the distribution. Range: λ ≥ 0.

double x

The location at which to compute the cumulative distribution function.

Return
double

the cumulative distribution at location x.

double InvCDF(double rate, double p)

Computes the inverse of the cumulative distribution function (InvCDF) for the distribution at the given probability. This is also known as the quantile or percent point function.
Parameters
double rate

The rate (λ) parameter of the distribution. Range: λ ≥ 0.

double p

The location at which to compute the inverse cumulative density.

Return
double

the inverse cumulative density at p.

bool IsValidParameterSet(double rate)

Tests whether the provided values are valid parameters for this distribution.
Parameters
double rate

The rate (λ) parameter of the distribution. Range: λ ≥ 0.

double PDF(double rate, double x)

Computes the probability density of the distribution (PDF) at x, i.e. ∂P(X ≤ x)/∂x.
Parameters
double rate

The rate (λ) parameter of the distribution. Range: λ ≥ 0.

double x

The location at which to compute the density.

Return
double

the density at x.

double PDFLn(double rate, double x)

Computes the log probability density of the distribution (lnPDF) at x, i.e. ln(∂P(X ≤ x)/∂x).
Parameters
double rate

The rate (λ) parameter of the distribution. Range: λ ≥ 0.

double x

The location at which to compute the density.

Return
double

the log density at x.

double Sample(double rate)

Draws a random sample from the distribution.
Parameters
double rate

The rate (λ) parameter of the distribution. Range: λ ≥ 0.

Return
double

A random number from this distribution.

double Sample(Random rnd, double rate)

Draws a random sample from the distribution.
Parameters
Random rnd

The random number generator to use.

double rate

The rate (λ) parameter of the distribution. Range: λ ≥ 0.

Return
double

A random number from this distribution.

void Samples(Random rnd, Double[] values, double rate)

Fills an array with samples generated from the distribution.
Parameters
Random rnd

The random number generator to use.

Double[] values

The array to fill with the samples.

double rate

The rate (λ) parameter of the distribution. Range: λ ≥ 0.

Return
void

a sequence of samples from the distribution.

void Samples(Double[] values, double rate)

Fills an array with samples generated from the distribution.
Parameters
Double[] values

The array to fill with the samples.

double rate

The rate (λ) parameter of the distribution. Range: λ ≥ 0.

Return
void

a sequence of samples from the distribution.

IEnumerable<double> Samples(double rate)

Generates a sequence of samples from the Exponential distribution.
Parameters
double rate

The rate (λ) parameter of the distribution. Range: λ ≥ 0.

Return
IEnumerable<double>

a sequence of samples from the distribution.

IEnumerable<double> Samples(Random rnd, double rate)

Generates a sequence of samples from the Exponential distribution.
Parameters
Random rnd

The random number generator to use.

double rate

The rate (λ) parameter of the distribution. Range: λ ≥ 0.

Return
IEnumerable<double>

a sequence of samples from the distribution.

Public Methods

double CumulativeDistribution(double x)

Computes the cumulative distribution (CDF) of the distribution at x, i.e. P(X ≤ x).
Parameters
double x

The location at which to compute the cumulative distribution function.

Return
double

the cumulative distribution at location x.

double Density(double x)

Computes the probability density of the distribution (PDF) at x, i.e. ∂P(X ≤ x)/∂x.
Parameters
double x

The location at which to compute the density.

Return
double

the density at x.

double DensityLn(double x)

Computes the log probability density of the distribution (lnPDF) at x, i.e. ln(∂P(X ≤ x)/∂x).
Parameters
double x

The location at which to compute the log density.

Return
double

the log density at x.

bool Equals(object obj)

int GetHashCode()

Type GetType()

double InverseCumulativeDistribution(double p)

Computes the inverse of the cumulative distribution function (InvCDF) for the distribution at the given probability. This is also known as the quantile or percent point function.
Parameters
double p

The location at which to compute the inverse cumulative density.

Return
double

the inverse cumulative density at p.

double Sample()

Draws a random sample from the distribution.
Return
double

A random number from this distribution.

IEnumerable<double> Samples()

Generates a sequence of samples from the Exponential distribution.
Return
IEnumerable<double>

a sequence of samples from the distribution.

void Samples(Double[] values)

Fills an array with samples generated from the distribution.

string ToString()

A string representation of the distribution.
Return
string

a string representation of the distribution.

Public Properties

double Entropy get;

Gets the entropy of the distribution.

double Maximum get;

Gets the maximum of the distribution.

double Mean get;

Gets the mean of the distribution.

double Median get;

Gets the median of the distribution.

double Minimum get;

Gets the minimum of the distribution.

double Mode get;

Gets the mode of the distribution.

Random RandomSource get; set;

Gets or sets the random number generator which is used to draw random samples.

double Rate get;

Gets the rate (λ) parameter of the distribution. Range: λ ≥ 0.

double Skewness get;

Gets the skewness of the distribution.

double StdDev get;

Gets the standard deviation of the distribution.

double Variance get;

Gets the variance of the distribution.