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Explaining Errors in Machine Translation with Absolute Gradient Ensembles

شرح الأخطاء في الترجمة الآلية مع مجموعات التدرج المطلقة

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 Publication date 2021
and research's language is English
 Created by Shamra Editor




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Current research on quality estimation of machine translation focuses on the sentence-level quality of the translations. By using explainability methods, we can use these quality estimations for word-level error identification. In this work, we compare different explainability techniques and investigate gradient-based and perturbation-based methods by measuring their performance and required computational efforts. Throughout our experiments, we observed that using absolute word scores boosts the performance of gradient-based explainers significantly. Further, we combine explainability methods to ensembles to exploit the strengths of individual explainers to get better explanations. We propose the usage of absolute gradient-based methods. These work comparably well to popular perturbation-based ones while being more time-efficient.

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