@inproceedings{zeinalipour-etal-2025-shawarma,
    title = "Shawarma Chats: A Benchmark Exact Dialogue {\&} Evaluation Platter in {E}gyptian, {M}aghrebi {\&} Modern Standard {A}rabic{---}{A} Triple-Dialect Feast for Hungry Language Models",
    author = "Zeinalipour, Kamyar  and
      Saad, Mohamed Zaky  and
      Attafi, Oumaima  and
      Maggini, Marco  and
      Gori, Marco",
    editor = "Darwish, Kareem  and
      Ali, Ahmed  and
      Abu Farha, Ibrahim  and
      Touileb, Samia  and
      Zitouni, Imed  and
      Abdelali, Ahmed  and
      Al-Ghamdi, Sharefah  and
      Alkhereyf, Sakhar  and
      Zaghouani, Wajdi  and
      Khalifa, Salam  and
      AlKhamissi, Badr  and
      Almatham, Rawan  and
      Hamed, Injy  and
      Alyafeai, Zaid  and
      Alowisheq, Areeb  and
      Inoue, Go  and
      Mrini, Khalil  and
      Alshammari, Waad",
    booktitle = "Proceedings of The Third Arabic Natural Language Processing Conference",
    month = nov,
    year = "2025",
    address = "Suzhou, China",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-emnlp/2025.arabicnlp-main.39/",
    pages = "472--524",
    ISBN = "979-8-89176-352-4",
    abstract = "Content-grounded dialogue evaluation for Arabic remains under-resourced, particularly across Modern Standard (MSA), Egyptian, and Maghrebi varieties. We introduce Shawarma Chats, a benchmark of 30,000 six-turn conversations grounded in Wikipedia content, evenly split across the three dialects. To build this corpus, we prompt five frontier LLMs GPT-4o, Gemini 2.5 Flash, Qwen-Plus, DeepSeek-Chat, and Mistral Large to generate 1,500 seed dialogues. Native Arabic speakers evaluate these outputs to select the most effective generator and most human-aligned grader. Sub-A dialogues undergo a two-pass, rationale-driven self-repair loop where the grader critiques and the generator revises; unresolved cases are manually corrected. We apply this pipeline to 10,000 Wikipedia paragraphs to create 30,000 high-quality conversations 10,000 per dialect{---}at modest human cost. To validate the benchmark, we LoRA-fine-tune six open LLMs (1{--}24 B parameters) on Shawarma Chats and observe consistent gains in automatic-grader scores, BERTScore, BLEU and ROUGE particularly for models larger than 7 B parameters. Shawarma Chats thus establishes the first large-scale, dialect-aware, content-grounded dialogue benchmark for Arabic."
}