reset strategy before extracting dev examples

trainer/src/MacaonTrain.cpp

@@ -109,6 +109,7 @@ int MacaonTrain::main()
   trainer.createDataset(config, debug);
   if (!computeDevScore)
   {
+    machine.getStrategy().reset();
     SubConfig devConfig(devGoldConfig, devGoldConfig.getNbLines());
     trainer.createDevDataset(devConfig, debug);
   }