Fine tuning, use stopbackward=1 in the cfg-file in that layer where Backwar...

AlexeyAB

2018-01-04 9ac78d8b84f6a059d2cefe22a10aa60de5b3feaf

 src/network.c

@@ -218,6 +218,7 @@
            state.delta = prev.delta;
        }
        layer l = net.layers[i];
        if (l.stopbackward) break;
        l.backward(l, state);
    }
}