Density and random generation for the Beta-binomial distribution with parameters size, mu, and theta.
rbetabinom(n = 1, size, prob, theta)dbetabinom(x, size, prob, theta, log = FALSE)
integer; number of random variates to generate.
size parameter of the binomial distribution
mean of the Beta distribution
Beta distribution dispersion parameter
vector of non-negative integer quantiles
logical; if TRUE, return logarithm(s) of probabilities.
Returns a vector of length n containing random variates drawn from the Beta-binomial distribution.
Returns a vector (of length equal to the number of columns of x) containing the probabilities of observing each column of x given the specified parameters (size, prob, theta).
An interface for C codes using these functions is provided by the package. Visit the package homepage to view the pomp C API document.
A variable \(X\) is Beta-binomially distributed if \(X~Binomial(n,P)\) where \(P~Beta(mu,theta)\). Using the standard (a,b) parameterization, \(a=mu*theta\) and \(b=(1-mu)*theta\).
More on implementing POMP models:
Csnippet,
accumulator variables,
basic components,
covariates,
distributions,
dmeasure specification,
dprocess specification,
emeasure specification,
parameter transformations,
pomp-package,
pomp,
prior specification,
rinit specification,
rmeasure specification,
rprocess specification,
skeleton specification,
transformations,
userdata,
vmeasure specification