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Preslav Nakov

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Can Dialects Be Steered Like Languages? Sparse Neurons and Distributed Directions in Arabic LLMs

Neuron steering reinforces dialect in some varieties when the prompt is already dialectal but cannot induce it from MSA prompts, whereas vector steering succeeds in both settings, and Arabic dialects are therefore steerable mainly through distributed rather than localized representations.

K. Elozeiri, Mervat T. Abassy, Omar Kallas et al. · 0 citations
Preprint Jul 2026

Jais 2: A Family of Arabic-Centric Open Large Language Models

Jais 2 is a family of Arabic-centric large language models developed jointly by MBZUAI, Cerebras, and Inception, designed to advance Arabic-centric language modeling, with strong performance across the Arabic and culturally grounded benchmarks evaluated in this report. The family includes, to our knowledge, the largest...

Mohamed Anwar, A. Freihat, George Ibrahim et al. · 3 citations
#natural language process... Preprint Sep 2026

How Correct Is Your Answer? A Semantic Correctness Framework for Open QA Evaluation

A semantic correctness taxonomy is introduced that assigns open-ended answers to eight ordered classes, separating verbose-but-correct answers from those contaminated by hallucinated content and CAP (Context-Aware Precision), a reference-based metric that scores question-conditioned statements using bidirectional NLI.

Elitsa Yotkova, Violeta Kastreva, Petar Velkov et al. · 0 citations
#artificial intelligence Preprint Sep 2026

EDRAC: Benchmarking Arabic Dialect Reading Comprehension

This work introduces EDRAC, the first large-scale benchmark for dialectal Arabic machine reading comprehension (MRC) and generative QA, covering five major dialects: Egyptian, Moroccan, Emirati, Syrian, and Saudi Arabic, and benchmarks Arabic-centric and multilingual LLMs on EDRAC using lexical and semantic metrics.

Noor Abo Mokh, K. Chirkunov, Teresa Lynn et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Right Frame, Wrong Rule: Cultural Cues Expose the Financial Knowledge Gap They Were Meant to Close

When a question has valid answers under different normative frameworks, a language model must decide which framework to use and whether it can answer correctly within it. We call this setting normative pluralism and study it in Islamic finance using a four-choice taxonomy that separates framework selection from within-...

R. Elbadry, Ahmed Heakl, Saeed Almheiri et al. · 0 citations
Jul 2026

MIRAGE: Defending Long-Form RAG Against Misinformation Pollution

MIRAGE, a training-free, model-agnostic defense for long-form RAG, is introduced, a training-free, model-agnostic defense for long-form RAG that consistently restores factuality under mixed and fully polluted evidence and outperforms prior robust-RAG methods.

Saadeldine Eletter, Ruihong Zeng, Yuxia Wang et al. · 0 citations

Can Agentic Trading Systems Pay for Their Own Intelligence?

TradeLens is introduced, a trace-grounded diagnostic toolkit for evaluating agentic trading systems from their trading records, runtime traces, and deployment configurations, which reframe the evaluation of LLM-based trading agents from capability-centric performance ranking to trace-grounded diagnosis of intelligence-...

Qiqi Duan, Changlun Li, Chen Wang et al. · 0 citations
Preprint Aug 2026

Think with Structured Grounding: Perceptual Reinforcement Learning for Chart and Visual-Tabular Understanding

Think with Structured Grounding (TwSG), a novel fine-grained image perception framework designed to internalize complex images's tool-use capabilities within the model, is proposed, endowing models with native fine-grained region description and flexible reasoning capabilities.

Chang-Jiang Jiang, Qian-Nian Zhao, Lei Xin et al. · 2 citations
Preprint Aug 2026

SurakshaEval: An Indic Safety Benchmark for Multilingual LLMs

SurakshaEval is introduced, a novel safety benchmark composed of human-written prompts spanning real-world scenarios, explicitly designed for ten major Indian languages - Assamese, Bengali, Gujarati, Hindi, Kannada, Malayalam, Marathi, Punjabi, Tamil, and Telugu - along with English.

Debopriyo Banerjee, K. R. Kavitha, Angana Borah et al. · 0 citations
Review Jul 2026

Overview of FinMMEval 2026 Task 2: Multilingual Financial Short-Answer Question Answering

FinMMEval 2026 Task 2 evaluates short-answer financial question answering over multilingual evidence over multilingual evidence using document retrieval-augmented generation, cross-lingual evidence handling, structured prompting, answer compression, and validation strategies.

Zhuohan Xie, Xueqing Peng, Georgi N. Georgiev et al. · 1 citation
Review Jul 2026

Overview of FinMMEval 2026 Task 1: Multilingual Financial Multiple-Choice Question Answering

FinMMEval 2026 Task 1 evaluates multilingual financial multiple-choice question answering in English, Chinese, Arabic, and Hindi. The task tests whether systems can select the correct answer to finance questions involving domain terminology, numerical interpretation, and conceptual financial reasoning across languages...

Zhuohan Xie, Yu-Yang Dai, R. Elbadry et al. · 1 citation

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