Preferred names for the importance-proposal constructors

proposal_uniform(), proposal_mvn(), and proposal_mvt() are the preferred names of is_uniform(), is_mvn(), and is_mvt(): the historical is_* prefix reads as a logical predicate, which these constructors are not. The is_* names remain available as aliases and are not scheduled for removal.

Usage

proposal_uniform(n_dim, lower = -1, upper = 1)

proposal_mvn(n_dim, mean = rep(0, n_dim), cov = diag(n_dim))

proposal_mvt(n_dim, mean = rep(0, n_dim), sigma = diag(n_dim), df = 5)

Arguments

n_dim

Ambient dimension p.

lower

Length-p numeric vector of lower bounds (recycled from a single value).

upper

Length-p numeric vector of upper bounds (recycled from a single value).

mean, cov

Forwarded to is_mvn().

sigma, df

Forwarded to is_mvt().

Value

An is_proposal object.

See also

Other proposals: is_mvn(), is_mvt(), is_uniform()

Examples

proposal_uniform(n_dim = 2L, lower = -5, upper = 5)
#> <is_proposal>: "is_uniform" in p = 2 dimensions
proposal_mvn(n_dim = 2L, mean = c(0, 0), cov = diag(2))
#> <is_proposal>: "is_mvn" in p = 2 dimensions
proposal_mvt(n_dim = 2L, df = 5)   # heavier tails; a robust default
#> <is_proposal>: "is_mvt" in p = 2 dimensions