get_2ndDerivPenalty_wrapper: Wrapper for Integrated Second-Derivative Penalty Computation

In lgspline: Lagrangian Multiplier Smoothing Splines for Smooth Function Estimation

Wrapper for Integrated Second-Derivative Penalty Computation

Description

Computes the integrated squared second-derivative penalty matrix with optional parallel processing.

Usage

get_2ndDerivPenalty_wrapper(
  K,
  colnm_expansions,
  C,
  power1_cols,
  power2_cols,
  power3_cols,
  power4_cols,
  interaction_single_cols,
  interaction_quad_cols,
  triplet_cols,
  nonspline_cols,
  p_expansions,
  parallel,
  cl
)

Arguments

K	Number of partitions (K+1)
colnm_expansions	Column names of basis expansions
C	Basis expansion matrix used to determine observed predictor ranges
power1_cols	Linear term columns
power2_cols	Quadratic term columns
power3_cols	Cubic term columns
power4_cols	Quartic term columns
interaction_single_cols	Single interaction columns
interaction_quad_cols	Quadratic interaction columns
triplet_cols	Triplet interaction columns
nonspline_cols	Predictors not treated as spline effects
p_expansions	Number of columns in the basis expansion per partition
parallel	Logical to enable parallel processing
cl	Cluster object for parallel computation

Value

A p \times p integrated squared second-derivative penalty matrix.

lgspline documentation built on May 8, 2026, 5:07 p.m.