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Register a new userPALI at SemEval-2021 Task 2: Fine-Tune XLM-RoBERTa for Word in Context Disambiguation
PALI في Semeval-2021 المهمة 2: تون XLM-Roberta للكلمة في السياق
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تقدم هذه الورقة نظام الفوز لفريق بالي لمهمة SEMEVAL-2021 2: غزالة متعددة اللغات والتبلغة في السياق.نحن نغتنم نموذج XLM-Roberta لحل مهمة Word في حالة غموض السياق، أي، لتحديد ما إذا كانت الكلمة المستهدفة في السياقتين تحتوي على نفس المعنى أم لا.في التنفيذ، نقوم أولا بتصميم علامة الإدخال أولا للتأكيد على الكلمة المستهدفة في السياقات.ثانيا، نقوم بإنشاء متجه جديد على المدينات الدقيقة من XLM-Roberta وأعلفه بشبكة متصلة بالكامل لإخراج احتمال ما إذا كانت الكلمة المستهدفة في السياق لها نفس المعنى أم لا.يتم تحقيق المتجهات الجديد من خلال التمسك بتضمين الرمز المميز [CLS] ومذكرات الكلمة المستهدفة في السياقات.في التدريب، نستكشف العديد من الحيل، مثل محسن الحارس، وتعزيز البيانات، والتدريب الخصم، لتحسين التنبؤ النموذجي.وبالتالي، فإننا نحصل على المركز الأول في جميع المهام الأربعة عبر اللغات.
This paper presents the PALI team's winning system for SemEval-2021 Task 2: Multilingual and Cross-lingual Word-in-Context Disambiguation. We fine-tune XLM-RoBERTa model to solve the task of word in context disambiguation, i.e., to determine whether the target word in the two contexts contains the same meaning or not. In implementation, we first specifically design an input tag to emphasize the target word in the contexts. Second, we construct a new vector on the fine-tuned embeddings from XLM-RoBERTa and feed it to a fully-connected network to output the probability of whether the target word in the context has the same meaning or not. The new vector is attained by concatenating the embedding of the [CLS] token and the embeddings of the target word in the contexts. In training, we explore several tricks, such as the Ranger optimizer, data augmentation, and adversarial training, to improve the model prediction. Consequently, we attain the first place in all four cross-lingual tasks.
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In this paper, we introduce the first SemEval task on Multilingual and Cross-Lingual Word-in-Context disambiguation (MCL-WiC). This task allows the largely under-investigated inherent ability of systems to discriminate between word senses within and
across languages to be evaluated, dropping the requirement of a fixed sense inventory. Framed as a binary classification, our task is divided into two parts. In the multilingual sub-task, participating systems are required to determine whether two target words, each occurring in a different context within the same language, express the same meaning or not. Instead, in the cross-lingual part, systems are asked to perform the task in a cross-lingual scenario, in which the two target words and their corresponding contexts are provided in two different languages. We illustrate our task, as well as the construction of our manually-created dataset including five languages, namely Arabic, Chinese, English, French and Russian, and the results of the participating systems. Datasets and results are available at: https://github.com/SapienzaNLP/mcl-wic.
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