dot-solver_resolve_active_set: Re-Solve an Equality Subproblem for a Fixed Active Set

In lgspline: Lagrangian Multiplier Smoothing Splines for Smooth Function Estimation

Re-Solve an Equality Subproblem for a Fixed Active Set

Description

Uses the generic augmented-constraint builder together with a supplied equality-only solver to validate and package a fixed active set.

Usage

.solver_resolve_active_set(
  result,
  A,
  constraint_value_vectors,
  qp_Amat,
  qp_bvec,
  qp_meq,
  active_ineq,
  solve_subproblem,
  kkt_subproblem,
  method,
  parallel_qr = FALSE,
  cl = NULL
)

Arguments

result	Current coefficient list.
A	Base equality constraint matrix.
constraint_value_vectors	Equality right-hand-side vectors.
qp_Amat	Full QP constraint matrix.
qp_bvec	Full QP right-hand side.
qp_meq	Number of leading equality columns in qp_Amat.
active_ineq	Candidate active inequality indices on the original qp_Amat indexing.
solve_subproblem	Callback taking one augmented-constraint state and returning the equality-constrained coefficient list.
kkt_subproblem	Callback taking (result_new, aug_state) and returning KKT diagnostics.
method	Character solver label for qp_info.

Value

Either a converged list(result, qp_info, converged) or NULL if the supplied active set does not satisfy KKT.

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