Evaluating the Morphosyntactic Well-formedness of Generated Texts
Evaluating the Morphosyntactic Well-formedness of Generated Texts
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DOI:
10.18653/v1/2021.emnlp-main.570
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发表时间:
2021-03
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通讯作者:
Adithya Pratapa;Antonios Anastasopoulos;Shruti Rijhwani;Aditi Chaudhary;David R. Mortensen;Graham Neubig;Yulia Tsvetkov
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作者:
Adithya Pratapa;Antonios Anastasopoulos;Shruti Rijhwani;Aditi Chaudhary;David R. Mortensen;Graham Neubig;Yulia Tsvetkov
Text generation systems are ubiquitous in natural language processing applications. However, evaluation of these systems remains a challenge, especially in multilingual settings. In this paper, we propose L’AMBRE – a metric to evaluate the morphosyntactic well-formedness of text using its dependency parse and morphosyntactic rules of the language. We present a way to automatically extract various rules governing morphosyntax directly from dependency treebanks. To tackle the noisy outputs from text generation systems, we propose a simple methodology to train robust parsers. We show the effectiveness of our metric on the task of machine translation through a diachronic study of systems translating into morphologically-rich languages.