CG

Provides parameters to tune the conjugate gradient optimization [Edit on GitHub]

Subsections

LINE_SEARCH

Keywords

FLETCHER_REEVES
MAX_STEEP_STEPS
RESTART_LIMIT

Keyword descriptions

FLETCHER_REEVES: logical = F 

Lone keyword: T

Usage: FLETCHER-REEVES

Uses FLETCHER-REEVES instead of POLAK-RIBIERE when using Conjugate Gradients [Edit on GitHub]

MAX_STEEP_STEPS: integer = 0 

Usage: MAX_STEEP_STEPS {integer}

Maximum number of steepest descent steps before starting the conjugate gradients optimization. [Edit on GitHub]

RESTART_LIMIT: real = 9.00000000E-001 

Usage: RESTART_LIMIT {real}

Cosine of the angle between two consecutive searching directions. If the angle during a CG optimization is less than the one corresponding to to the RESTART_LIMIT the CG is reset and one step of steepest descent is performed. [Edit on GitHub]