activity
20232026
most citedStatistically Valid Variable Importance Assessment through Conditional Permutations

6 citations · 6 across the 3 of their papers we have counts for

collaborators

6 papers

cs.CL2026

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

Mohamed Anwar, Abed Alhakim Freihat, George Ibrahim +57

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 p…

cs.LG2025

MixtureKit: A General Framework for Composing, Training, and Visualizing Mixture-of-Experts Models

Ahmad Chamma, Omar El Herraoui, Guokan Shang

We introduce MixtureKit, a modular open-source framework for constructing, training, and analyzing Mixture-of-Experts (MoE) models from arbitrary pre-trained or fine-tuned models.…

cs.LG2025

Shorter but not Worse: Frugal Reasoning via Easy Samples as Length Regularizers in Math RLVR

Abdelaziz Bounhar, Hadi Abdine, Evan Dufraisse +5

Large language models (LLMs) trained for step-by-step reasoning often become excessively verbose, raising inference cost. Standard Reinforcement Learning with Verifiable Rewards (R…

cs.CL2025

Nile-Chat: Egyptian Language Models for Arabic and Latin Scripts

Guokan Shang, Hadi Abdine, Ahmad Chamma +7

We introduce Nile-Chat-4B, 3x4B-A6B, and 12B, a collection of LLMs for Egyptian dialect, uniquely designed to understand and generate texts written in both Arabic and Latin scripts…

cs.LG2023

Variable Importance in High-Dimensional Settings Requires Grouping

Ahmad Chamma, Bertrand Thirion, Denis A. Engemann

Explaining the decision process of machine learning algorithms is nowadays crucial for both model's performance enhancement and human comprehension. This can be achieved by assessi…

cs.LG2023★ 6 cited

Statistically Valid Variable Importance Assessment through Conditional Permutations

Ahmad Chamma, Denis A. Engemann, Bertrand Thirion

Variable importance assessment has become a crucial step in machine-learning applications when using complex learners, such as deep neural networks, on large-scale data. Removal-ba…