# Line Search

> Source: https://sukruyusufkaya.com/en/glossary/line-search
> Updated: 2026-05-13T21:00:29.824Z
> Type: glossary
> Category: matematik-istatistik-optimizasyon
**TLDR:** An optimization step-size selection approach that determines how far to move along a chosen direction.

<p>Line search is used in optimization to determine how far to move once a promising direction has been chosen. Knowing the right direction alone is not enough: steps that are too large can create instability, while steps that are too small can slow learning dramatically. For this reason, step-size selection has a major impact on optimization performance. In advanced optimization algorithms, line search plays an important role in achieving more reliable and controlled convergence. Strong optimization requires both a good direction and a good step size.</p>