Table 4 shows that while using a translation lexicon learnt from decipherment does not improve the quality of machine translation significantly, the joint approach improves Bleu score by 0.9 and 2.1 on Global Voices test set and web news test set respectively.
since Malagasy and English have very different word orders, we decide to apply dependency based decipherment for the two languages as suggested by Dou and Knight (2013).