Fixed bug in line_search_strong_wolfe.py

766aa216 · Theo Steininger · 2158e485 · 766aa216
Commit 766aa216 authored Aug 30, 2017 by Theo Steininger
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nifty/minimization/line_searching/line_search_strong_wolfe.py ...y/minimization/line_searching/line_search_strong_wolfe.py +1 -1

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--- a/nifty/minimization/line_searching/line_search_strong_wolfe.py
+++ b/nifty/minimization/line_searching/line_search_strong_wolfe.py
@@ -139,7 +139,7 @@ class LineSearchStrongWolfe(LineSearch):
            phi_alpha1 = le_alpha1.value

            if (phi_alpha1 > phi_0 + self.c1*alpha1*phiprime_0) or \
-               ((phi_alpha1 >= phi_alpha0) and (iteration_number > 0)):
+               ((phi_alpha1 >= phi_alpha0) and (iteration_number > 1)):
                le_star = self._zoom(alpha0, alpha1, phi_0, phiprime_0,
                                     phi_alpha0, phiprime_alpha0, phi_alpha1,
                                     le_0)