mini.roots

a list of penalty matrices, in packed form.

a vector where the i-th element is the offset for the i-th matrix. 
The elements in columns <code>1:off[i]</code> of <code>B[[i]]</code> will be equal to zero.

here <code>rank[i]</code> is optional supplied rank of <code>S[[i]]</code>. Set <code>rank[i] &lt; 1</code>, or 
<code>rank=NULL</code> to estimate.

rank

INTERNAL function to obtain square roots, <code>B[[i]]</code>, of the penalty matrices <code>S[[i]]</code>'s having as few
 columns as possible.

Generalized additive (mixed) models, some of their extensions and
other generalized ridge regression with multiple smoothing
parameter estimation by (Restricted) Marginal Likelihood,
Generalized Cross Validation and similar, or using iterated
nested Laplace approximation for fully Bayesian inference. See
Wood (2017) <doi:10.1201/9781315370279> for an overview.
Includes a gam() function, a wide variety of smoothers, 'JAGS'
support and distributions beyond the exponential family.

mini.roots: Obtain square roots of penalty matrices

Description

Usage

Arguments

Value