Lines Matching full:step_size
230 // If during the line search, the step_size falls below this
241 // sufficiently. More precisely, we are looking for a step_size
244 // f(step_size) <= f(0) + sufficient_decrease * f'(0) * step_size
250 // new_step_size >= max_line_search_step_contraction * step_size
260 // new_step_size <= min_line_search_step_contraction * step_size
285 // is that we seek a step_size s.t.
287 // |f'(step_size)| <= sufficient_curvature_decrease * |f'(0)|
290 // of f w.r.t step_size (d f / d step_size).
299 // new_step_size <= max_step_expansion * step_size.
