A Hybrid Entity-Centric Approach to Persian Pronoun Resolution with BERT Enhancement
الموضوعات : Natural Language Processing
Hassan Haji Mohammadi
1
,
alizera talebpour
2
,
Ahmad Mahmoudi-Aznaveh
3
,
Samaneh Yazdani
4
1 - Department of Electrical and Computer Engineering, Islamic Azad University Tehran North Branch, Tehran, Iran
2 - shahid Beheshti
3 - Cyberspace research institute, Shahid Beheshti University, Tehran, Iran
4 - Department of Electrical and Computer Engineering, Islamic Azad University Tehran North Branch, Tehran, Iran
الکلمات المفتاحية: Coreference Resolution, Natural Language Processing, Pronoun Resolution, Corpus Development, BERT, Transformer Models,
ملخص المقالة :
Pronoun resolution, a critical aspect of coreference resolution in natural language processing, is essential for accurate text understanding and generation. This paper introduces a hybrid Persian pronoun resolution model that combines rule-based and machine-learning approaches to address the unique challenges of Persian linguistics. The model integrates seven high-precision rule-based modules, specifically designed for Persian linguistic nuances, with a random forest classifier enhanced by BERT contextual embeddings and cluster-level features. This hybrid approach effectively tackles the complexities of pronoun resolution, outperforming existing Persian systems on two corpora: the newly developed Mehr corpus (400 documents) and the established RCDAT corpus. The integration of BERT embeddings and cluster-level features plays a pivotal role in the model's superior performance, yielding a 4.68 F1-score improvement on the Mehr corpus and a 4.01 F1-score improvement on the RCDAT corpus. The proposed model not only achieves state-of-the-art results but also provides a practical and interpretable solution for Persian pronoun resolution. By leveraging both rule-based and machine-learning techniques, this work advances the field of Persian natural language processing, offering a robust framework for future research and applications. The findings highlight the importance of combining linguistic rules with advanced machine-learning methods to address the intricacies of pronoun resolution in morphologically rich languages like Persian. This study contributes significantly to the growing body of research on Persian NLP, paving the way for improved text understanding and generation in Persian.
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