... Indirect-HMM-based Hypothesis Alignment for Combining Outputs from Machine Translation Systems In Proceeding of EMNLP Hawaii, US, Oct F Huang and K Papinent 2007 Hierarchical System Combination for Machine Translation ... word alignments are ready, we start from the intersection of the two word alignments, and then continuously add new links between backbone and hypothesis if and only if both of the two words of ... the hypothesis is assigned with a rank-based score of 1/ (1 + r ) , where r is the rank of the hypothesis And we assign the same weights to each system For selecting the backbone, only the top hypothesis...