`scipy.optimize._optimize:_line_search_wolfe12`

source: /scipy/optimize/_optimize.py :1156

Signature

   def     _line_search_wolfe12 (    f    ,    fprime    ,    xk    ,    pk    ,    gfk    ,    old_fval    ,    old_old_fval    ,   ** kwargs      )

Summary

Same as line_search_wolfe1, but fall back to line_search_wolfe2 if suitable step length is not found, and raise an exception if a suitable step length is not found.

Raises

: _LineSearchError: If no suitable step size is found

Aliases

scipy.optimize._optimize._line_search_wolfe12