line search

Line search is a method used in optimization algorithms to find the best step size when moving toward a solution. Imagine you're trying to minimize a curve; line search helps determine how far to move along a chosen direction to get closer to the lowest point efficiently. It involves testing different step lengths to see which one decreases the target function most effectively, ensuring that each move improves the solution without overshooting. This process helps algorithms converge faster and more reliably to the optimal value.