no code implementations • 25 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.
no code implementations • 7 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.
1 code implementation • 1 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.
1 code implementation • 18 Dec 2023 • Reda Khoufache, Mustapha Lebbah, Hanene Azzag, Etienne Goffinet, Djamel Bouchaffra
Dirichlet Process Mixture Models (DPMMs) are widely used to address clustering problems.
1 code implementation • 29 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.
no code implementations • 19 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.
no code implementations • 15 Mar 2023 • Mohamed Djallel Dilmi, Hanene Azzag, Mustapha Lebbah
Genetic algorithms are a well-known example of bio-inspired heuristic methods.
no code implementations • 14 Mar 2023 • Bilal Faye, Mohamed-djallel Dilmi, Hanane Azzag, Mustapha Lebbah, Djamel Bouchaffra
Normalization is a pre-processing step that converts the data into a more usable representation.
1 code implementation • 14 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).
no code implementations • 14 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.
no code implementations • 5 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.
no code implementations • 13 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.
1 code implementation • 27 Sep 2021 • Pierre Le Jeune, Mustapha Lebbah, Anissa Mokraoui, Hanene Azzag
This training strategy encourages the network to adapt to new classes as it would at test time.
no code implementations • 22 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.
1 code implementation • 11 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.
1 code implementation • 3 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.
1 code implementation • 15 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.
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.
no code implementations • 10 Mar 2019 • Andriantsiory Dina Faneva, Mustapha Lebbah, Hanane Azzag, Gaël Beck
Consider a data set collected by (individuals-features) pairs in different times.
no code implementations • 11 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.
1 code implementation • 11 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.