Struct ExactLineSearch

pub struct ExactLineSearch { /* private fields */ }

Brute-force line search minimizing the objective function over a set of step width candidates, also known as exact line search.

Implementations

impl ExactLineSearch

pub fn new( start_step_width: f64, stop_step_width: f64, increase_factor: f64, ) -> ExactLineSearch

Creates a new ExactLineSearch given the start_step_width, the stop_step_width and the increase_factor. The set of evaluated step widths γ is specified as { γ | γ = start_step_width · increase_factorⁱ, i ∈ N, γ <= stop_step_width }, assuming that start_step_width < stop_step_width and increase_factor > 1.

Trait Implementations

impl Clone for ExactLineSearch

fn clone(&self) -> ExactLineSearch

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExactLineSearch

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

Formats the value using the given formatter.

impl LineSearch for ExactLineSearch

fn search<F>( &self, function: &F, initial_position: &[f64], direction: &[f64], ) -> Vec<f64>

where F: Function1,

Performs the actual line search given the current position x and a direction to go to. Returns the new position.

impl Copy for ExactLineSearch