Dynamic Ensembles in Named Entity Recognition for Historical Arabic Texts

Muhammad Majadly, Tomer Sagi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The use of Named Entity Recognition (NER) over archaic Arabic texts is steadily increasing. However, most tools have been either developed for modern English or trained over English language documents and are limited over historical Arabic text. Even Arabic NER tools are often trained on modern web-sourced
text, making their fit for a historical task questionable. To mitigate historic Arabic NER resource scarcity, we propose a dynamic ensemble model utilizing several learners. The dynamic aspect is achieved by utilizing predic-
tors and features over NER algorithm results that identify which have performed better on a specific task in real-time. We evaluate our approach against state-of-the-art Arabic NER and static ensemble methods over a novel his-
torical Arabic NER task we have created. Our results show that our approach improves upon the state-of-the-art and reaches a 0.8 F-score
on this challenging task.
Original languageEnglish
Title of host publicationThe Arabic Natural Language Processing Workshop (WANLP 2021) co-located with EACL 2021
StatePublished - 2021

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