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

## 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.