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Three-component Gaussian-mixture target

Source: R/gmm_target_constructors.R
mixture_target.Rd

A toy three-component planar mixture target where everything is known exactly: the log_density matches the GMM density formula and the attached samples are drawn from that same mixture. Useful for sanity- checking the three fitting regimes against ground truth.

Usage

mixture_target(with_samples = FALSE, n = 2000L, seed = 1L)

Arguments

with_samples

If TRUE, attach n exact mixture draws.

n

Number of samples to attach when with_samples = TRUE.

seed

Optional integer seed used when drawing the samples.

Value

A gmm_target in dimension 2.

See also

Other targets: banana_target(), donut_target(), epanechnikov_target(), gmm_target_from_samples(), maxent_target()

Examples

m <- mixture_target(with_samples = TRUE, n = 100L)
m
#> <gmm_target>: "three_mixture" in p = 2 dimensions
#>   log_density : supplied
#>   samples     : 100 x 2 matrix
#>   normalised  : TRUE
#>   log Z(f)    : 0