Skip to main content
`Ctrl`+`K`

# 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

## Notes

The base class for this method is `TAOBNK`

The various algorithmic factors can only be supplied via the options database

## See Also

`Tao`, `TAOBNK`, `TAONLS`, `TAONTL`, `TAONM`, `TaoType`, `TaoCreate()`, `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