Search Results for author: Mustapha Lebbah

Found 21 papers, 10 papers with code

Cluster-Based Normalization Layer for Neural Networks

no code implementations25 Mar 2024 Bilal Faye, Hanane Azzag, Mustapha Lebbah

This paper introduces Cluster-Based Normalization (CB-Norm) in two variants - Supervised Cluster-Based Normalization (SCB-Norm) and Unsupervised Cluster-Based Normalization (UCB-Norm) - proposing a groundbreaking one-step normalization approach.

Clustering

Context-Based Multimodal Fusion

no code implementations7 Mar 2024 Bilal Faye, Hanane Azzag, Mustapha Lebbah, Djamel Bouchaffra

Additionally, the network learns to differentiate embeddings of different modalities through fusion with context and aligns data distributions using a contrastive approach for self-supervised learning.

Self-Supervised Learning

Distributed MCMC inference for Bayesian Non-Parametric Latent Block Model

1 code implementation1 Feb 2024 Reda Khoufache, Anisse Belhadj, Hanene Azzag, Mustapha Lebbah

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/Worker architecture.

Clustering

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

1 code implementation29 Sep 2023 Dina Faneva Andriantsiory, Camille Coti, Joseph Ben Geloun, Mustapha Lebbah

Machine Learning approaches like clustering methods deal with massive datasets that present an increasing challenge.

Clustering

Self-Reinforcement Attention Mechanism For Tabular Learning

no code implementations19 May 2023 Kodjo Mawuena Amekoe, Mohamed Djallel Dilmi, Hanene Azzag, Mustapha Lebbah, Zaineb Chelly Dagdia, Gregoire Jaffre

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 data; particularly when dealing with their challenging imbalanced characteristics.

Fraud Detection

Multiway clustering of 3-order tensor via affinity matrix

1 code implementation14 Mar 2023 Dina Faneva Andriantsiory, Joseph Ben Geloun, Mustapha Lebbah

We propose a new method of multiway clustering for 3-order tensors via affinity matrix (MCAM).

Clustering

DBSCAN of Multi-Slice Clustering for Third-Order Tensors

no code implementations14 Mar 2023 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.

Clustering

Transformer-based conditional generative adversarial network for multivariate time series generation

no code implementations5 Oct 2022 Abdellah Madane, Mohamed-djallel Dilmi, Florent Forest, Hanane Azzag, Mustapha Lebbah, Jerome Lacaille

One of its limitations is that it may generate a random multivariate time series; it may fail to generate samples in the presence of multiple sub-components within an overall distribution.

Data Augmentation Generative Adversarial Network +3

Improved Multi-objective Data Stream Clustering with Time and Memory Optimization

no code implementations13 Jan 2022 Mohammed Oualid Attaoui, Hanene Azzag, Mustapha Lebbah, Nabil Keskes

The experiments show the ability of our method to partition the data stream in arbitrarily shaped, compact, and well-separated clusters while optimizing the time and memory.

Clustering

Multi-Slice Clustering for 3-order Tensor Data

no code implementations22 Sep 2021 Dina Faneva Andriantsiory, Joseph Ben Geloun, Mustapha Lebbah

We analyse, in each dimension or tensor mode, the spectral decomposition of each tensor slice, i. e. a matrix.

Clustering

A Survey and Implementation of Performance Metrics for Self-Organized Maps

1 code implementation11 Nov 2020 Florent Forest, Mustapha Lebbah, Hanane Azzag, Jérôme Lacaille

Quantitative evaluation of self-organizing maps (SOM) is a subset of clustering validation, which is a challenging problem as such.

Clustering Model Selection +1

Conditional Latent Block Model: a Multivariate Time Series Clustering Approach for Autonomous Driving Validation

1 code implementation3 Aug 2020 Etienne Goffinet, Anthony Coutant, Mustapha Lebbah, Hanane Azzag, Loïc Giraldi

The FunCLBM model extends the recently proposed Functional Latent Block Model and allows to create a dependency structure between row and column clusters.

Autonomous Driving Clustering +4

Selecting the Number of Clusters $K$ with a Stability Trade-off: an Internal Validation Criterion

1 code implementation15 Jun 2020 Alex Mourer, Florent Forest, Mustapha Lebbah, Hanane Azzag, Jérôme Lacaille

In this perspective, clustering stability has emerged as a natural and model-agnostic principle: an algorithm should find stable structures in the data.

Clustering Model Selection

Deep Embedded SOM: Joint Representation Learning and Self-Organization

1 code implementation ESANN 2019 2019 Florent Forest, Mustapha Lebbah, Hanene Azzag, Jérôme Lacaille

In the wake of recent advances in joint clustering and deep learning, we introduce the Deep Embedded Self-Organizing Map, a model that jointly learns representations and the code vectors of a self-organizing map.

Clustering Dimensionality Reduction +2

Algorithms for an Efficient Tensor Biclustering

no code implementations10 Mar 2019 Andriantsiory Dina Faneva, Mustapha Lebbah, Hanane Azzag, Gaël Beck

Consider a data set collected by (individuals-features) pairs in different times.

A Distributed and Approximated Nearest Neighbors Algorithm for an Efficient Large Scale Mean Shift Clustering

no code implementations11 Feb 2019 Gaël Beck, Tarn Duong, Mustapha Lebbah, Hanane Azzag, Christophe Cérin

Mean Shift clustering is a generalization of the k-means clustering which computes arbitrarily shaped clusters as defined as the basins of attraction to the local modes created by the density gradient ascent paths.

Clustering

Nearest Neighbor Median Shift Clustering for Binary Data

1 code implementation11 Feb 2019 Gaël Beck, Tarn Duong, Mustapha Lebbah, Hanane Azzag

We describe in this paper the theory and practice behind a new modal clustering method for binary data.

Clustering

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