We modify the translation model for both the conditional and the joint model by adding another factor which strongly weighs translation+transliteration options by taking the square-root of the product of the translation and transliteration probabilities.
modifying equations (8) and (11) in Model-1 and Model-2 we obtain equations (15) and (16) respectively: For the optimization of lambda parameters we hold the value of the translation coefficient λ 1 13 and the transliteration coefficient λ 2 constant (using the optimized values as discussed in section 4.2.1) and optimize λ 3 again using 2-fold optimization on all the folds as described above 14 .