Performance Implications of Using Unrepresentative Corpora in Arabic Natural Language Processing

Saied Alshahrani, Norah Alshahrani, Soumyabrata Dey, Jeanna Matthews


Abstract
Wikipedia articles are a widely used source of training data for Natural Language Processing (NLP) research, particularly as corpora for low-resource languages like Arabic. However, it is essential to understand the extent to which these corpora reflect the representative contributions of native speakers, especially when many entries in a given language are directly translated from other languages or automatically generated through automated mechanisms. In this paper, we study the performance implications of using inorganic corpora that are not representative of native speakers and are generated through automated techniques such as bot generation or automated template-based translation. The case of the Arabic Wikipedia editions gives a unique case study of this since the Moroccan Arabic Wikipedia edition (ARY) is small but representative, the Egyptian Arabic Wikipedia edition (ARZ) is large but unrepresentative, and the Modern Standard Arabic Wikipedia edition (AR) is both large and more representative. We intrinsically evaluate the performance of two main NLP upstream tasks, namely word representation and language modeling, using word analogy evaluations and fill-mask evaluations using our two newly created datasets: Arab States Analogy Dataset (ASAD) and Masked Arab States Dataset (MASD). We demonstrate that for good NLP performance, we need both large and organic corpora; neither alone is sufficient. We show that producing large corpora through automated means can be a counter-productive, producing models that both perform worse and lack cultural richness and meaningful representation of the Arabic language and its native speakers.
Anthology ID:
2023.arabicnlp-1.19
Volume:
Proceedings of ArabicNLP 2023
Month:
December
Year:
2023
Address:
Singapore (Hybrid)
Editors:
Hassan Sawaf, Samhaa El-Beltagy, Wajdi Zaghouani, Walid Magdy, Ahmed Abdelali, Nadi Tomeh, Ibrahim Abu Farha, Nizar Habash, Salam Khalifa, Amr Keleg, Hatem Haddad, Imed Zitouni, Khalil Mrini, Rawan Almatham
Venues:
ArabicNLP | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
218–231
Language:
URL:
https://aclanthology.org/2023.arabicnlp-1.19
DOI:
10.18653/v1/2023.arabicnlp-1.19
Bibkey:
Cite (ACL):
Saied Alshahrani, Norah Alshahrani, Soumyabrata Dey, and Jeanna Matthews. 2023. Performance Implications of Using Unrepresentative Corpora in Arabic Natural Language Processing. In Proceedings of ArabicNLP 2023, pages 218–231, Singapore (Hybrid). Association for Computational Linguistics.
Cite (Informal):
Performance Implications of Using Unrepresentative Corpora in Arabic Natural Language Processing (Alshahrani et al., ArabicNLP-WS 2023)
Copy Citation:
PDF:
https://aclanthology.org/2023.arabicnlp-1.19.pdf