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Has Machine Translation Achieved Human Parity? A Case for Document-level Evaluation

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arxiv 1808.07048 v1 pith:IMRJ7AQE submitted 2018-08-21 cs.CL

Has Machine Translation Achieved Human Parity? A Case for Document-level Evaluation

classification cs.CL
keywords translationevaluationhumanmachinedocument-leveldocumentsparitysentences
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Recent research suggests that neural machine translation achieves parity with professional human translation on the WMT Chinese--English news translation task. We empirically test this claim with alternative evaluation protocols, contrasting the evaluation of single sentences and entire documents. In a pairwise ranking experiment, human raters assessing adequacy and fluency show a stronger preference for human over machine translation when evaluating documents as compared to isolated sentences. Our findings emphasise the need to shift towards document-level evaluation as machine translation improves to the degree that errors which are hard or impossible to spot at the sentence-level become decisive in discriminating quality of different translation outputs.

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Cited by 2 Pith papers

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