# AdaptLinker at KnowledgeGraphEval 2026: Cross-Domain Arabic Named Entity Recognition with Adversarial and Self-Training

> Source: <https://aclanthology.org/2026.arabicnlp-sharedtasks.149/>
> Published: 2026-10-23 00:00:00+00:00

##### Abstract

This paper presents the submission of team AdaptLinker to the AdaptNER shared task (Subtask 1: Cross-Domain Named Entity Recognition) at KnowledgeGraphEval 2026. To address nested entities and domain shift across 10 unseen target domains, we propose a multi-head token classification framework built on the AraBERT backbone. Our approach inte- grates: (1) 21 parallel linear classifiers to pre- dict overlapping named entities; (2) a Domain Adversarial Neural Network (DANN) using a Gradient Reversal Layer (GRL) to align feature spaces; (3) confidence-gated pseudo-labeling on unlabeled target text; and (4) Stochastic Weight Averaging (SWA). Our final system achieved a Precision of 75.48%, Recall of 71.21%, a Micro F1 of 73.29%, and a Macro F1 of 63.37% on the official blinded test set, outperforming the shared-task baseline (0.7329 vs. 0.622 Micro F1) and ranking 6th out of all participating teams
- Anthology ID:
- 2026.arabicnlp-sharedtasks.149
- Volume:
- [Proceedings of The Fourth Arabic Natural Language Processing Conference: Shared Tasks](https://aclanthology.org/volumes/2026.arabicnlp-sharedtasks/)
- Month:
- October
- Year:
- 2026
- Address:
- Budapest, Hungary
- Editors:
- [Muhammad Abdul-Mageed](https://aclanthology.org/people/muhammad-abdul-mageed/) ,[Tamer Elsayed](https://aclanthology.org/people/tamer-elsayed/) ,[Houda Bouamor](https://aclanthology.org/people/houda-bouamor/unverified/) ,[Samhaa El-Beltagy](https://aclanthology.org/people/samhaa-r-el-beltagy/) ,[Hend Al-Khalifa](https://aclanthology.org/people/hend-al-khalifa/) ,[Ahmed Abdelali](https://aclanthology.org/people/ahmed-abdelali/unverified/) ,[AbdelRahim Elmadany](https://aclanthology.org/people/abdelrahim-elmadany/unverified/) ,[Abdellah El Mekki](https://aclanthology.org/people/abdellah-el-mekki/) ,[Kareem Darwish](https://aclanthology.org/people/kareem-darwish/) ,[Sakhar Alkhereyf](https://aclanthology.org/people/sakhar-alkhereyf/) ,[Hamzah Luqman](https://aclanthology.org/people/hamzah-luqman/) ,[Salam Khalifa](https://aclanthology.org/people/salam-khalifa/) ,[Samar Magdy](https://aclanthology.org/people/samar-magdy/unverified/) ,[Zaid Alyafeai](https://aclanthology.org/people/zaid-alyafeai/) ,[Injy Hamed](https://aclanthology.org/people/injy-hamed/unverified/) ,[Wajdi Zaghouani](https://aclanthology.org/people/wajdi-zaghouani/) ,[Imed Zitouni](https://aclanthology.org/people/imed-zitouni/unverified/)
- Venue:
- [ArabicNLP](https://aclanthology.org/venues/arabicnlp/)
- SIG:
- [SIGARAB](https://aclanthology.org/sigs/sigarab/)
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 1195–1199
- Language:
- URL:
- [https://aclanthology.org/2026.arabicnlp-sharedtasks.149/](https://aclanthology.org/2026.arabicnlp-sharedtasks.149/)
- DOI:
- Cite (ACL):
- Quan Hoang Ho and Thìn Đặng Văn. 2026. [AdaptLinker at KnowledgeGraphEval 2026: Cross-Domain Arabic Named Entity Recognition with Adversarial and Self-Training](https://aclanthology.org/2026.arabicnlp-sharedtasks.149/) . In*Proceedings of The Fourth Arabic Natural Language Processing Conference: Shared Tasks* , pages 1195–1199, Budapest, Hungary. Association for Computational Linguistics.
- Cite (Informal):
- [AdaptLinker at KnowledgeGraphEval 2026: Cross-Domain Arabic Named Entity Recognition with Adversarial and Self-Training](https://aclanthology.org/2026.arabicnlp-sharedtasks.149/) (Ho & Văn, ArabicNLP 2026)
- PDF:
- [https://aclanthology.org/2026.arabicnlp-sharedtasks.149.pdf](https://aclanthology.org/2026.arabicnlp-sharedtasks.149.pdf)