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# TAOBQNKTR

Bounded Quasi-Newton-Krylov Trust Region method for nonlinear minimization with bound constraints. This method approximates the Hessian-vector product using a limited-memory quasi-Newton formula, and iteratively inverts the Hessian with a Krylov solver. The quasi-Newton matrix and its settings can be accessed via the prefix `-tao_bqnk_`. For options database, see TAOBNK

### See Also

TAOBNK, TAOBQNKTR, TAOBQNKLS

### Level

beginner

### Location

src/tao/bound/impls/bqnk/bqnktr.c
Index of all Tao routines
Table of Contents for all manual pages
Index of all manual pages