Flag to output the score of each sentence at inference + various scoring tools #2196
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The goal is to be able to rerank nbest hypothesis when combining the score of each translation with another score.
In the context of Noisy Channel Reranking we combine:
the score of each translation
the backward score with an inverse model
a language model score of each translation
New tools:
mbr_bleu: compute the best bleu amongst n_best hypotheses between themselves.
oracle_bleu: compute the best possible BLEU against a reference and pick the best in n_best
oracle_comet: same with unbable/comet