[−][src]Module liblbfgs::line
Find a satisfactory step length along predefined search direction
Example
use liblbfgs::math::LbfgsMath; use liblbfgs::Problem; use liblbfgs::default_evaluate; use liblbfgs::line::LineSearch; const N: usize = 100; let mut x = [0.0; N]; for i in (0..N).step_by(2) { x[i] = -1.2; x[i + 1] = 1.0; } // construct problem let mut prb = Problem::new(&mut x, default_evaluate(), None); prb.evaluate(); // construct initial search direction prb.update_search_direction(); // Compute the initial step let mut step = 1.0/prb.search_direction().vec2norm(); let ls = LineSearch::default(); let ncall = ls.find(&mut prb, &mut step).expect("line search");
Structs
LineSearch |
Enums
LineSearchAlgorithm | Line search algorithms. |
Functions
line_search_backtracking |
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line_search_morethuente |