Actual source code: bqnktl.c
petsc-3.14.6 2021-03-30
1: #include <../src/tao/bound/impls/bqnk/bqnk.h>
3: /*MC
4: TAOBQNKTL - Bounded Quasi-Newton-Krylov Trust-region with Line-search fallback, for nonlinear
5: minimization with bound constraints. This method approximates the Hessian-vector
6: product using a limited-memory quasi-Newton formula, and iteratively inverts the
7: Hessian with a Krylov solver. The quasi-Newton matrix and its settings can be
8: accessed via the prefix `-tao_bqnk_`
10: Options Database Keys:
11: + -tao_bqnk_max_cg_its - maximum number of bounded conjugate-gradient iterations taken in each Newton loop
12: . -tao_bqnk_init_type - trust radius initialization method ("constant", "direction", "interpolation")
13: . -tao_bqnk_update_type - trust radius update method ("step", "direction", "interpolation")
14: - -tao_bqnk_as_type - active-set estimation method ("none", "bertsekas")
16: Level: beginner
17: M*/
18: PETSC_EXTERN PetscErrorCode TaoCreate_BQNKTL(Tao tao)
19: {
23: TaoCreate_BQNK(tao);
24: tao->ops->solve = TaoSolve_BNTL;
25: return(0);
26: }