BackTracking¶
-
class
kona.algorithms.util.linesearch.
BackTracking
(optns={}, out_file=<open file '<stdout>', mode 'w'>)[source]¶ Bases:
kona.algorithms.util.linesearch.LineSearch
Back-tracking line search.
Variables: - alpha_init (float) – Initial step size.
- alpha_min (float) – Minimum step size.
- rdtn_factor (float) – Reduction factor for the step size at each iteration.
- p_dot_dfdx (float) – Value of \(\langle p, \nabla f \rangle\) at current step.