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

Type: real
Default: 1.00000000E-001

Description: Convergence criterion of GOLD method.

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INITIAL_STEP_SIZE

Type: real
Default: 1.00000000E-001

Description: Initial step length

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MAX_STEP_SIZE

Type: real
Default: 3.00000000E+000

Description: Maximum step length

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METHOD

Type: enum
Default: ADAPT

Description: Linesearch method.

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

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TINY_STEP_SIZE

Type: real
Default: 2.00000000E-003

Description: Step length taken if negative step is suggested.

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