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Generate random hyper-parameters

Source: R/kernels.R
hp.Rd

Generate a set of random hyper-parameters, specific to the chosen type of kernel, under the format that is used in Magma.

Usage

hp(
  kern = "SE",
  list_ID = NULL,
  list_hp = NULL,
  noise = FALSE,
  common_hp = FALSE
)

Arguments

kern

A function, or a character string indicating the chosen type of kernel among:

  • "SE": the Squared Exponential kernel,

  • "LIN": the Linear kernel,

  • "PERIO": the Periodic kernel,

  • "RQ": the Rational Quadratic kernel. Compound kernels can be created as sums or products of the above kernels. For combining kernels, simply provide a formula as a character string where elements are separated by whitespaces (e.g. "SE + PERIO"). As the elements are treated sequentially from the left to the right, the product operator '*' shall always be used before the '+' operators (e.g. 'SE * LIN + RQ' is valid whereas 'RQ + SE * LIN' is not).

In case of a custom kernel function, the argument list_hp has to be provided as well, for designing a tibble with the correct names of hyper-parameters.

list_ID

A vector, associating an ID value with each individual for whom hyper-parameters are generated. If NULL (default) only one set of hyper-parameters is return without the ID column.

list_hp

A vector of characters, providing the name of each hyper-parameter, in case where kern is a custom kernel function.

noise

A logical value, indicating whether a 'noise' hyper-parameter should be included.

common_hp

A logical value, indicating whether the set of hyper-parameters is assumed to be common to all individuals.

Value

A tibble, providing a set of random hyper-parameters associated with the kernel specified through the argument kern.

Examples

TRUE
#> [1] TRUE