Given the encouraging results of the Portage APE approach in the above experiments, we were curious to see whether a Portage+Portage combination might be as successful: after all, if Portage was good at correcting some other system's output, could it not manage to correct the output of another Portage translator?
when the translation system has been trained using distinct data (Portage Hansard + Portage APE experiments), post-editing makes a large difference, comparable to that observed with the rule-based MT output provided with the Job Bank data.