The study investigates how exposing large language models to Arabic translations of English benchmark tasks can hide data contamination from standard English-only detection methods. By testing four instruction-tuned models with increasing Arabic exposure, the authors find that traditional probes like TS-Guessing and Min-K%++ fail to detect contamination, yet English performance still improves. They propose a new Translation-Aware Contamination Detection (TACD) method that uses cross-lingual consistency and choice reordering to reveal contamination effects that are otherwise invisible to English-only diagnostics.
By Chaymaa Abbas, Nour Shammaa, Mariette Awad
arXiv:2608. 03859v1 Announce Type: cross Abstract: Large language models (LLMs) pose challenges to academic integrity and peer review.
By Peijia Guo, Wenxuan Xie, ZiGuang Li, Ming Li
The paper presents a bilingual (English/Arabic) benchmark for evaluating how well open-weight, locally deployable language models can accurately recall specific Hadith texts. Five models—Mistral‑7B, Gemma3‑4B, Jais‑7B, ALLaM‑7B, and Phi4‑mini‑3.8B—were tested on 3,000 Hadiths per language across six canonical Sunni collections, with each model given only a bibliographic reference and asked to reproduce the exact text. None of the 30,000 responses achieved both high lexical and semantic fidelity, and Arabic outputs performed uniformly worse than English, indicating that these models, without retrieval augmentation, cannot reliably provide verifiable religious scripture.
By Dayam Nadeem, Safdar Mustafa, Ameen Ur Rehman, Shahab Saquib Sohail, Mohammad Nadeem, Usman Naseem
arXiv:2608.28645v1 Announce Type: cross
Abstract: Low-resource languages without an adequate training corpus often use a related, higher-resource language as a scaffold for comprehension. Still, ther...
By Sindhu Shetty, Spurthi Setty, Natan Vidra
arXiv:2608. 05163v1 Announce Type: cross Abstract: A common assumption holds that switching to a non-English language makes a multilingual RAG system easier to attack for personal information.
By Yanhang Li, Zhichao Fan, Zexin Zhuang
A new large-scale Arabic fact‑checking dataset called Arafa has been created using an automated pipeline that generates claims from Arabic Wikipedia, mutates them into counterfactuals, and validates them against supporting or refuting evidence. The dataset contains 181,976 claim‑evidence pairs labeled as supported, refuted, or not enough information, and human evaluation shows high inter‑annotator agreement and strong validation accuracy. Fine‑tuned transformer models on Arafa achieve a Macro F1‑score of 77%, demonstrating its usefulness for Arabic fact‑checking tasks.
By Christophe Khalil, Shady Elbassuoni, Rida Assaf
The paper demonstrates that fine‑tuning large language models on a single author’s works can trigger the models to reproduce large verbatim excerpts from copyrighted books, even when prompted only with semantic descriptions. Experiments on GPT‑4o, Gemini‑2.5‑Pro, and DeepSeek‑V3.1 show up to 85‑90% recall of held‑out books, with spans exceeding 460 words, and this effect generalizes across authors and model providers. The findings suggest that fine‑tuning reactivates latent memorization from pre‑training, revealing a widespread vulnerability in industry models.
By Xinyue Liu, Niloofar Mireshghallah, Jane C. Ginsburg, Tuhin Chakrabarty
arXiv:2605. 28510v2 Announce Type: replace-cross Abstract: Large language models (LLMs) for code completion and generation are increasingly used in software development, yet they may reproduce training examples verbatim and without authorship attribution, raising legal and ethical concerns around plagiarism and license compliance.
By Andrea Gurioli, Davide D'Ascenzo, Federico Pennino, Maurizio Gabbrielli, Stefano Zacchiroli
arXiv:2608.00713v2 Announce Type: replace
Abstract: This paper describes Observatorio L\'azaro, a language resource that monitors unassimilated lexical borrowings (predominantly English lexical borro...
By Elena Alvarez-Mellado
AQL‑Lite is a framework that enables efficient adaptation of multilingual large language models to Modern Standard Arabic by combining a quality‑first data curation pipeline with a partial‑parameter continual pretraining recipe. The approach trains RS‑LoRA adapters, the last eight transformer blocks, and the embedding matrix using layer‑wise learning rates, achieving significant benchmark gains while reducing training time and resource usage. In large‑scale experiments, AQL‑Lite recovers most of the performance of full‑parameter continual pretraining and outperforms adapter‑only baselines, demonstrating its practicality for Arabic LLM development.
By Houssam Eddine Boukhalfa, Mourad Bouache, Mourad Dahmane
arXiv:2508. 01656v2 Announce Type: replace-cross Abstract: As Large Language Models (LLMs) have reached human-like fluency and coherence, distinguishing machine-generated text (MGT) from human-written content becomes increasingly difficult.
By Lucio La Cava, Dominik Macko, R\'obert M\'oro, Ivan Srba, Andrea Tagarelli
arXiv:2604. 01904v3 Announce Type: replace-cross Abstract: Post-hoc unauthorized-training data detection for large language models (LLMs) typically assumes a query-with-originals regime: rights holders query a target LLM with raw proprietary data and assess whether the model assigns them stronger memorization-based detection signals, e.
By Muxing Li, Zesheng Ye, Sharon Li, Feng Liu