Start cg from 0

5624dc3e · Philipp Arras · a9652e2c · 5624dc3e
Commit 5624dc3e authored Jul 23, 2019 by Philipp Arras
--- a/nifty5/operators/sampling_enabler.py
+++ b/nifty5/operators/sampling_enabler.py
@@ -63,8 +63,7 @@ class SamplingEnabler(EndomorphicOperator):
            s = self._prior.draw_sample(from_inverse=True)
            sp = self._prior(s)
            nj = self._likelihood.draw_sample()
-            energy = QuadraticEnergy(s, self._op, sp + nj,
-                                     _grad=self._likelihood(s) - nj)
+            energy = QuadraticEnergy(0*s, self._op, sp + nj)
            inverter = ConjugateGradient(self._ic)
            if self._approximation is not None:
                energy, convergence = inverter(