And we assign the same weights to each system.
we follow the work of (Sim et al., 2007;Rosti et al., 2007a;Rosti et al., 2007b;He et al., 2008) and choose the hypothesis that best agrees with other hypo-theses on average as the backbone by applying Minimum Bayes Risk (MBR) decoding (Kumar and Byrne, 2004).