10. A computer-implemented method comprising: receiving a plurality of candidate translations for a source sentence, each candidate translation of the plurality of candidate translations being an output of a respective machine translation system in a plurality of machine translation systems, each machine translation system of the plurality of machine translation systems having a respective system prior weight; determining a degree of correlation between two or more of the plurality of the machine translation systems; when the degree of correlation between the two or more machine translation systems is less than a threshold indicative of a minimum acceptable gain in translation quality achievable by the two or more machine translation systems, selecting the plurality of candidate translations of the two or more machine translation systems; determining a group of words, each word in the group of words being a word in one or more selected candidate translations of the plurality of candidate translations; and identifying a sequence of words from the group of words, the sequence of words representing a translation for the source sentence.
10. A computer-implemented method comprising: receiving a plurality of candidate translations for a source sentence, each candidate translation of the plurality of candidate translations being an output of a respective machine translation system in a plurality of machine translation systems, each machine translation system of the plurality of machine translation systems having a respective system prior weight; determining a degree of correlation between two or more of the plurality of the machine translation systems; when the degree of correlation between the two or more machine translation systems is less than a threshold indicative of a minimum acceptable gain in translation quality achievable by the two or more machine translation systems, selecting the plurality of candidate translations of the two or more machine translation systems; determining a group of words, each word in the group of words being a word in one or more selected candidate translations of the plurality of candidate translations; and identifying a sequence of words from the group of words, the sequence of words representing a translation for the source sentence. 14. The method of claim 10 , further comprising: generating a group of candidate translations, the group of candidate translations including the plurality of candidate translations and the identified sequence of words representing a translation for the source sentence; and selecting as a consensus translation a candidate translation from the group of candidate translations.