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# Trust Region Minimizer¶

This minimizer is a hybrid Gauss-Newton/Quasi-Newton method, that makes use of a trust region.

It is a reimplementation of part of RALFit_nonlinear least squares solver.

It is listed in a comparison of fitting minimizers.

## Reference¶

• A higher order method for solving nonlinear least-squares problems, N.I.M. Gould, T.Rees, and J.A. Scott, RAL-P-2017-010

Category: FitMinimizers