تتمتع النموذج المستنى بالضمان بشعبية كبيرة في الأعمال الأخيرة من تجزئة التسلسل.ومع ذلك، فإن كل من هذه الطرق تعاني من عيوبها الخاصة، مثل التنبؤات غير الصالحة.في هذا العمل، نقدم نموذجا موحدا أساسيا، تحليل وحدة معجمية (LUA)، التي تتناول كل هذه الأمور.تجزئة تسلسل وحدة معجمية ينطوي على خطوتين.أولا، قمنا بتضمين كل فترة باستخدام التمثيلات من نموذج لغة المحدد.ثانيا، نحدد درجة لكل مرشح تجزئة وتطبيق البرمجة الديناميكية (DP) لاستخراج المرشح بحد أقصى درجة.لقد أجرينا تجارب مكثفة في 3 مهام، (على سبيل المثال، تصنيع النحوية)، عبر 7 مجموعات من مجموعات البيانات.أنشأت لوا عروضا جديدة من الفنادق الجديدة في 6 منها.لقد حققنا نتائج أفضل من خلال دمج ارتباطات التسمية.
The span-based model enjoys great popularity in recent works of sequence segmentation. However, each of these methods suffers from its own defects, such as invalid predictions. In this work, we introduce a unified span-based model, lexical unit analysis (LUA), that addresses all these matters. Segmenting a lexical unit sequence involves two steps. Firstly, we embed every span by using the representations from a pretraining language model. Secondly, we define a score for every segmentation candidate and apply dynamic programming (DP) to extract the candidate with the maximum score. We have conducted extensive experiments on 3 tasks, (e.g., syntactic chunking), across 7 datasets. LUA has established new state-of-the-art performances on 6 of them. We have achieved even better results through incorporating label correlations.
References used
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