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Register a new userDiscovering Representation Sprachbund For Multilingual Pre-Training
اكتشاف التمثيل Sprachbund للتدريب المسبق متعدد اللغات
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أظهرت النماذج المتعددة اللغات المدربة مسبقا فعاليتها في العديد من مهام NLP متعددة اللغات وتمكن من نقل الصفر أو القليل من التحويلات من لغات الموارد العالية إلى الموارد المنخفضة. ومع ذلك، نظرا للاختلافات والتناقضات النموذجية الكبرى بين بعض اللغات، عادة ما تؤدي هذه النماذج بشكل سيء على العديد من اللغات والإعدادات المتبادلة، والتي تظهر صعوبة في تعلم نموذج واحد للتعامل مع لغات متنوعة واسعة النظافة في نفس الوقت. لتخفيف هذه المشكلة، نقدم خط أنابيب ما قبل اللغات متعددة اللغات. نقترح إنشاء تمثيل لغة من النموذج متعدد اللغات مسبقا وإجراء التحليل اللغوي لإظهار أن تشابه تمثيل اللغة يعكس التشابه اللغوي من وجهات نظر متعددة، بما في ذلك أسرة اللغة، Sprachbund الجغرافية، وقاميا، وبناء جملة. ثم نحن ألمع جميع اللغات المستهدفة في مجموعات متعددة وتسمية كل مجموعة كتمثيل Sprachbund. وهكذا، من المفترض أن تعزز اللغات في نفس التمثيل SPRACHBUND بعضها البعض في كل من التدريب المسبق والضبط بشكل جيد لأنها تشترك في التشابه اللغوي الغني. نحن ندرج مسبقا نموذج واحد متعدد اللغات لكل تمثيل Sprachbund. يتم إجراء التجارب على المعايير المتبادلة وتحقيق تحسينات كبيرة مقارنة مع خطوط الأساس القوية.
Multilingual pre-trained models have demonstrated their effectiveness in many multilingual NLP tasks and enabled zero-shot or few-shot transfer from high-resource languages to low-resource ones. However, due to significant typological differences and contradictions between some languages, such models usually perform poorly on many languages and cross-lingual settings, which shows the difficulty of learning a single model to handle massive diverse languages well at the same time. To alleviate this issue, we present a new multilingual pre-training pipeline. We propose to generate language representation from multilingual pre-trained model and conduct linguistic analysis to show that language representation similarity reflects linguistic similarity from multiple perspectives, including language family, geographical sprachbund, lexicostatistics, and syntax. Then we cluster all the target languages into multiple groups and name each group as a representation sprachbund. Thus, languages in the same representation sprachbund are supposed to boost each other in both pre-training and fine-tuning as they share rich linguistic similarity. We pre-train one multilingual model for each representation sprachbund. Experiments are conducted on cross-lingual benchmarks and significant improvements are achieved compared to strong baselines.
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