Struct RCGConfig 

pub struct RCGConfig {
    pub max_iters: usize,
    pub grad_tol: Real,
    pub init_step: Real,
    pub armijo_c: Real,
    pub armijo_beta: Real,
    pub max_ls_iters: usize,
    pub variant: CgVariant,
    pub restart_every: usize,
}

Configuration for Riemannian Conjugate Gradient.

Fields

max_iters: usize

Maximum number of iterations.

grad_tol: Real

Stop when ||grad f(x)|| < grad_tol.

init_step: Real

Initial step size for Armijo backtracking.

armijo_c: Real

Armijo sufficient decrease constant.

armijo_beta: Real

Backtracking factor (< 1).

max_ls_iters: usize

Maximum Armijo backtracking steps per iteration.

variant: CgVariant

Fletcher-Reeves or Polak-Ribière+.

restart_every: usize

Restart to steepest descent every N iterations (0 = never force restart).

Automatic restart still occurs when the conjugate direction is not a descent direction.

Trait Implementations

impl Clone for RCGConfig

fn clone(&self) -> RCGConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RCGConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RCGConfig

fn default() -> Self

Returns the “default value” for a type.