Iterative Refinement for Machine Translation
Table 3: Test accuracy on WMT test sets after applying our refinement procedure.
['newstest', 'PBMT BLEU', 'Our BLEU', 'Δ']
The best performing configuration is Fdual with the product-based heuristic spr thresholded at t=0.5 for up to N=5 substitutions. Overall the system obtains a small but consistent improvement over all the test sets.