Actual source code: bqnkls.c
petsc-3.13.6 2020-09-29
1: #include <../src/tao/bound/impls/bqnk/bqnk.h>
3: /*MC
4: TAOBQNKLS - Bounded Quasi-Newton-Krylov Line Search method for nonlinear minimization with
5: bound constraints. This method approximates the Hessian-vector product using a
6: limited-memory quasi-Newton formula, and iteratively inverts the Hessian with a
7: Krylov solver. The quasi-Newton matrix and its settings can be accessed via the
8: 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_BQNKLS(Tao tao)
19: {
20: TAO_BNK *bnk;
22:
24: TaoCreate_BQNK(tao);
25: tao->ops->solve = TaoSolve_BNLS;
26: bnk = (TAO_BNK*)tao->data;
27: bnk->update_type = BNK_UPDATE_STEP;
28: return(0);
29: }