# LINE_SEARCH

Detail settings or linesearch method. [Edit on GitHub]

Subsections

- PRINT

## Keywords

- EPS_STEP_SIZE

- INITIAL_STEP_SIZE

- MAX_STEP_SIZE

- METHOD

- TINY_STEP_SIZE

## Keyword descriptions

EPS_STEP_SIZE: real = 1.00000000E-001

  Convergence criterion of GOLD method. [Edit on GitHub]

INITIAL_STEP_SIZE: real = 1.00000000E-001

  Initial step length [Edit on GitHub]

MAX_STEP_SIZE: real = 3.00000000E+000

  Maximum step length [Edit on GitHub]

METHOD: enum = ADAPT

  Valid values:

  - `ADAPT` extrapolates usually based on 3 points, uses additional points on demand, very robust.

  - `3PNT` extrapolate based on 3 points

  - `2PNT` extrapolate based on 2 points and the slope (super fast, but might get stuck at saddle points)

  - `GOLD` perform 1D golden section search of the minimum (very expensive)

  - `NONE` always take steps of fixed INITIAL_STEP_SIZE

  Mentions: ⭐PAO-ML

  Linesearch method. [Edit on GitHub]

TINY_STEP_SIZE: real = 2.00000000E-003

  Step length taken if negative step is suggested. [Edit on GitHub]