Package index • distspec

Package overview

distspec distspec-package: distspec: Define Probability Distributions with Certain or Uncertain Parameters

Constructors for the supported probability distributions.

Distributions: Probability distributions
Gamma(): Gamma distribution
LogNormal(): Lognormal distribution
Normal(): Normal distribution
Exponential() Exp(): Exponential distribution
Weibull(): Weibull distribution
Beta(): Beta distribution
Fixed(): Fixed (point-mass) distribution
NonParametric(): Nonparametric distribution
Dirichlet(): Dirichlet prior for a nonparametric distribution
new_dist_spec(): Internal function for generating a dist_spec given parameters and a distribution.

Extract the type, parameters or probability mass function of a distribution.

get_distribution(): Get the distribution of a <dist_spec>
get_parameters(): Get parameters of a parametric distribution
get_pmf(): Get the probability mass function of a nonparametric distribution
ndist(): Calculate the number of distributions in a <dist_spec>

Summary statistics of a distribution.

mean(<dist_spec>): Returns the mean of one or more delay distribution
sd(): Returns the standard deviation of one or more delay distribution
max(<dist_spec>): Returns the maximum of one or more delay distribution
is_constrained(<dist_spec>): Check if a <dist_spec> is constrained, i.e. has a finite maximum or nonzero CDF cutoff.

Combine, convolve, discretise and fix the parameters of distributions.

c(<dist_spec>): Combines multiple delay distributions for further processing
`+`(<dist_spec>): Creates a delay distribution as the sum of two other delay distributions.
collapse(<dist_spec>): Collapse nonparametric distributions in a <dist_spec>
discretise(<dist_spec>) discretize(): Discretise a <dist_spec>
bound_dist(): Define bounds of a <dist_spec>
fix_parameters(<dist_spec>): Fix the parameters of a <dist_spec>

Draw random samples from a distribution with fixed parameters.

Print or plot a distribution.

print(<dist_spec>): Prints the parameters of one or more delay distributions
plot(<dist_spec>): Plot PMF and CDF for a dist_spec object

Lower-level helpers for working with distribution parameters.

natural_params(): Get the names of the natural parameters of a distribution
lower_bounds(): Get the lower bounds of the parameters of a distribution
convert_to_logmean(): Convert mean and sd to log mean for a log normal distribution
convert_to_logsd(): Convert mean and sd to log standard deviation for a log normal distribution