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Register a new userIntegrated Training for Sequence-to-Sequence Models Using Non-Autoregressive Transformer
التدريب المتكامل لنماذج تسلسل إلى تسلسل باستخدام محول غير تلقائي
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تطبيقات اللغة الطبيعية المعقدة مثل ترجمة الكلام أو الترجمة المحورية تعتمد تقليديا على النماذج المتتالية. ومع ذلك، من المعروف أن النماذج المتتالية عرضة لتوسيع الأخطاء ومشاكل التناقض النموذجي. علاوة على ذلك، لا توجد إمكانية لاستخدام بيانات التدريب المناسبة في النظم المتتالية التقليدية، مما يعني أن البيانات التدريبية الأكثر ملاءمة للمهمة لا يمكن استخدامها. اقترحت الدراسات الفقيرة عدة طرق تدريبية للتدريب المنتهي المتكاملة للتغلب عليها مشاكل، ومع ذلك، فإنهم يعتمدون في الغالب على بيانات ثلاثية الاتجاه (الاصطناعية أو الطبيعية). نقترح نموذجا متماثلا يعتمد على المحول غير التلقائي الذي يتيح التدريب المنتهي دون الحاجة إلى تمثيل واضح وسيط. تتجنب هذه الهندسة المعمارية الجديدة (I) القرارات المبكرة غير الضرورية التي يمكن أن تسبب أخطاء يتم نشرها بعد ذلك في جميع النماذج المتتالية (II) باستخدام بيانات التدريب المناسبة مباشرة. نحن نقوم بإجراء تقييم على مهام ترجمة من الآلة المحورية، وهي الفرنسية → الألمانية والألمانية → جمهورية التشيك. تظهر نتائجنا التجريبية أن الهندسة المعمارية المقترحة تعطي تحسنا أكثر من 2 بلو للفرنسية → الألمانية على خط الأساس المتتالي.
Complex natural language applications such as speech translation or pivot translation traditionally rely on cascaded models. However,cascaded models are known to be prone to error propagation and model discrepancy problems. Furthermore, there is no possibility of using end-to-end training data in conventional cascaded systems, meaning that the training data most suited for the task cannot be used.Previous studies suggested several approaches for integrated end-to-end training to overcome those problems, however they mostly rely on(synthetic or natural) three-way data. We propose a cascaded model based on the non-autoregressive Transformer that enables end-to-end training without the need for an explicit intermediate representation. This new architecture (i) avoids unnecessary early decisions that can cause errors which are then propagated throughout the cascaded models and (ii) utilizes the end-to-end training data directly. We conduct an evaluation on two pivot-based machine translation tasks, namely French→German and German→Czech. Our experimental results show that the proposed architecture yields an improvement of more than 2 BLEU for French→German over the cascaded baseline.
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