activity
20192026
most citedA Distributed and Approximated Nearest Neighbors Algorithm for an Efficient Large Scale Mean Shift Clustering

32 citations · 49 across the 36 of their papers we have counts for

collaborators

36 papers

cs.GT2026

Coalition Free Energy and Adaptive Precision in Multi-Agent Cooperation

Djamel Bouchaffra, Faycal Ykhlef, Mustapha Lebbah +1

Cooperative multi-agent systems require robust mechanisms for credit assignment under uncertainty. Here we introduce a variational framework, termed the Game-Theoretic Free Energy…

cs.AI2026

A Collective Variational Principle Unifying Bayesian Inference, Game Theory, and Thermodynamics

Djamel Bouchaffra, Faycal Ykhlef, Mustapha Lebbah +1

Collective intelligence emerges across biological, physical, and artificial systems without central coordination, yet a unifying principle governing such behaviour remains elusive.…

cs.LG2026

Adaptive Head Budgeting for Efficient Multi-Head Attention

Bilal Faye, Abdoulaye Mbaye, Hanane Azzag +1

Multi-head attention enables Transformers to capture diverse representations, but all attention heads are typically activated for every input, regardless of task complexity. For co…

cs.CV2026

Energy-Regularized Spatial Masking: A Novel Approach to Enhancing Robustness and Interpretability in Vision Models

Tom Devynck, Bilal Faye, Djamel Bouchaffra +3

Deep convolutional neural networks achieve remarkable performance by exhaustively processing dense spatial feature maps, yet this brute-force strategy introduces significant comput…

cs.AI2026

NeuroGame Transformer: Gibbs-Inspired Attention Driven by Game Theory and Statistical Physics

Djamel Bouchaffra, Faycal Ykhlef, Hanene Azzag +2

Standard attention mechanisms in transformers are limited by their pairwise formulation, which hinders the modeling of higher-order dependencies among tokens. We introduce the Neur…

cs.LG2025

Prototype-Guided Diffusion: Visual Conditioning without External Memory

Bilal Faye, Hanane Azzag, Mustapha Lebbah

Diffusion models achieve state-of-the-art image generation but remain computationally costly due to iterative denoising. Latent-space models like Stable Diffusion reduce overhead y…

cs.LG2025

Value-Free Policy Optimization via Reward Partitioning

Bilal Faye, Hanane Azzag, Mustapha Lebbah

Single-trajectory preference optimization methods learn from datasets of ((prompt, response, reward)) tuples, offering a practical alternative to pairwise preference learning by di…

cs.CV2025

MB-ORES: A Multi-Branch Object Reasoner for Visual Grounding in Remote Sensing

Karim Radouane, Hanane Azzag, Mustapha lebbah

We propose a unified framework that integrates object detection (OD) and visual grounding (VG) for remote sensing (RS) imagery. To support conventional OD and establish an intuitiv…

cs.LG2024

Game Theory Meets Statistical Mechanics in Deep Learning Design

Djamel Bouchaffra, Fayçal Ykhlef, Bilal Faye +2

We present a novel deep graphical representation that seamlessly merges principles of game theory with laws of statistical mechanics. It performs feature extraction, dimensionality…

cs.CL2024

Manual Verbalizer Enrichment for Few-Shot Text Classification

Quang Anh Nguyen, Nadi Tomeh, Mustapha Lebbah +3

With the continuous development of pre-trained language models, prompt-based training becomes a well-adopted paradigm that drastically improves the exploitation of models for many…

cs.CV2024

OneEncoder: A Lightweight Framework for Progressive Alignment of Modalities

Bilal Faye, Hanane Azzag, Mustapha Lebbah

Cross-modal alignment Learning integrates information from different modalities like text, image, audio and video to create unified models. This approach develops shared representa…

cs.LG2024

Evaluating the Efficacy of Instance Incremental vs. Batch Learning in Delayed Label Environments: An Empirical Study on Tabular Data Streaming for Fraud Detection

Kodjo Mawuena Amekoe, Mustapha Lebbah, Gregoire Jaffre +2

Real-world tabular learning production scenarios typically involve evolving data streams, where data arrives continuously and its distribution may change over time. In such a setti…

cs.CV2024

Adaptative Context Normalization: A Boost for Deep Learning in Image Processing

Bilal Faye, Hanane Azzag, Mustapha Lebbah +1

Deep Neural network learning for image processing faces major challenges related to changes in distribution across layers, which disrupt model convergence and performance. Activati…

cs.LG2024

Unsupervised Adaptive Normalization

Bilal Faye, Hanane Azzag, Mustapha Lebbah +1

Deep neural networks have become a staple in solving intricate problems, proving their mettle in a wide array of applications. However, their training process is often hampered by…

cs.CV2024

Lightweight Modular Parameter-Efficient Tuning for Open-Vocabulary Object Detection

Bilal Faye, Hanane Azzag, Mustapha Lebbah

Open-vocabulary object detection (OVD) extends recognition beyond fixed taxonomies by aligning visual and textual features, as in MDETR, GLIP, or RegionCLIP. While effective, these…

cs.LG2024

Supervised Batch Normalization

Bilal Faye, Mustapha Lebbah, Hanane Azzag

Batch Normalization (BN), a widely-used technique in neural networks, enhances generalization and expedites training by normalizing each mini-batch to the same mean and variance. H…

cs.LG2024

Enhancing Neural Network Representations with Prior Knowledge-Based Normalization

Bilal Faye, Hanane Azzag, Mustapha Lebbah +1

Deep learning models face persistent challenges in training, particularly due to internal covariate shift and label shift. While single-mode normalization methods like Batch Normal…

cs.LG2024★ 1 cited

Lightweight Cross-Modal Representation Learning

Bilal Faye, Hanane Azzag, Mustapha Lebbah +1

Low-cost cross-modal representation learning is crucial for deriving semantic representations across diverse modalities such as text, audio, images, and video. Traditional approach…

stat.ML2024

Distributed MCMC inference for Bayesian Non-Parametric Latent Block Model

Reda Khoufache, Anisse Belhadj, Hanene Azzag +1

In this paper, we introduce a novel Distributed Markov Chain Monte Carlo (MCMC) inference method for the Bayesian Non-Parametric Latent Block Model (DisNPLBM), employing the Master…

stat.ML2023

Distributed Collapsed Gibbs Sampler for Dirichlet Process Mixture Models in Federated Learning

Reda Khoufache, Mustapha Lebbah, Hanene Azzag +2

Dirichlet Process Mixture Models (DPMMs) are widely used to address clustering problems. Their main advantage lies in their ability to automatically estimate the number of clusters…

cs.DC2023

Parallel Computation of Multi-Slice Clustering of Third-Order Tensors

Dina Faneva Andriantsiory, Camille Coti, Joseph Ben Geloun +1

Machine Learning approaches like clustering methods deal with massive datasets that present an increasing challenge. We devise parallel algorithms to compute the Multi-Slice Cluste…

cs.LG2023★ 1 cited

Self-Reinforcement Attention Mechanism For Tabular Learning

Kodjo Mawuena Amekoe, Mohamed Djallel Dilmi, Hanene Azzag +3

Apart from the high accuracy of machine learning models, what interests many researchers in real-life problems (e.g., fraud detection, credit scoring) is to find hidden patterns in…

cs.LG2023★ 1 cited

DBSCAN of Multi-Slice Clustering for Third-Order Tensors

Dina Faneva Andriantsiory, Joseph Ben Geloun, Mustapha Lebbah

Several methods for triclustering three-dimensional data require the cluster size or the number of clusters in each dimension to be specified. To address this issue, the Multi-Slic…

cs.NE2023

Epigenetics Algorithms: Self-Reinforcement-Attention mechanism to regulate chromosomes expression

Mohamed Djallel Dilmi, Hanene Azzag, Mustapha Lebbah

Genetic algorithms are a well-known example of bio-inspired heuristic methods. They mimic natural selection by modeling several operators such as mutation, crossover, and selection…