publications

2026

1. Do Heavy Tails Help Diffusion? On the Subtle Trade-off Between Initialization and Training

   Hamza Cherkaoui, Hélène. Halconruy, and Antonio Ocello

   arXiv preprint, 2026

   [paper] [bibtex]

   @article{Cherkaoui2026a,
     author = {Cherkaoui, Hamza and Halconruy, Hélène. and Ocello, Antonio},
     title = {Do Heavy Tails Help Diffusion? On the Subtle Trade-off Between Initialization and Training},
     journal = {arXiv preprint},
     year = {2026},
   }

2. When to Transfer: Adaptive Source Selection for Positive Transfer in Linear Models

   Hamza Cherkaoui, Hélène Halconruy, and Yohan Petetin

   arXiv preprint, 2026

   [paper] [bibtex]

   @article{Cherkaoui2026b,
     author = {Cherkaoui, Hamza and Halconruy, Hélène and Petetin, Yohan},
     title = {When to Transfer: Adaptive Source Selection for Positive Transfer in Linear Models},
     journal = {arXiv preprint},
     year = {2026},
   }

3. High-Dimensional Analysis of Bootstrap Ensemble Classifiers

   Malik Tiomoko, Hamza Cherkaoui, Mohamed El Amine Seddik, and 3 more authors

   19th International Conference on Artificial Intelligence and Statistics (AISTATS), 2026

   [paper] [code] [bibtex]

   @article{cherkaoui2026c,
     title = {High-Dimensional Analysis of Bootstrap Ensemble Classifiers},
     author = {Tiomoko, Malik and Cherkaoui, Hamza and Seddik, Mohamed El Amine and Louart, Cosme and Schnoor, Ekkehard and Kégl, Balázs},
     journal = {19th International Conference on Artificial Intelligence and Statistics ({AISTATS})},
     year = {2026},
   }

2025

1. Adaptive Sample Sharing for Multi Agent Linear Bandits

   Hamza Cherkaoui, Merwan Barlier, and Igor Colin

   In 42nd International Conference on Machine Learning (ICML), 2025

   [paper] [code] [bibtex]

   @inproceedings{Cherkaoui2025a,
     author = {Cherkaoui, Hamza and Barlier, Merwan and Colin, Igor},
     title = {Adaptive Sample Sharing for Multi Agent Linear Bandits},
     booktitle = {42nd International Conference on Machine Learning ({ICML})},
     year = {2025},
     address = {Vancouver Convention Center},
   }

2023

1. Price of Safety in Linear Best Arm Identification

   Xuedong Shang, Igor Colin, Merwan Barlier, and 1 more author

   arXiv preprint, 2023

   [paper] [bibtex]

   @article{Cherkaoui2023b,
     author = {Shang, Xuedong and Colin, Igor and Barlier, Merwan and Cherkaoui, Hamza},
     title = {Price of Safety in Linear Best Arm Identification},
     journal = {arXiv preprint},
     year = {2023},
   }

2021

1. Multivariate semi-blind deconvolution of fMRI time series

   Hamza Cherkaoui, Thomas Moreau, Abderrahim Halimi, and 2 more authors

   NeuroImage, 2021

   [paper] [code] [bibtex]

   @article{Cherkaoui2021a,
     author = {Cherkaoui, Hamza and Moreau, Thomas and Halimi, Abderrahim and Leroy, Claire and Ciuciu, Philippe},
     title = {Multivariate semi-blind deconvolution of {fMRI} time series},
     journal = {NeuroImage},
     volume = {241},
     year = {2021},
     doi = {10.1016/j.neuroimage.2021.118418},
   }

2020

1. Learning to solve TV regularised problems with unrolled algorithms

   Hamza Cherkaoui, Jeremias Sulam, and Thomas Moreau

   In 34th Conference and Workshop on Neural Information Processing Systems (NeurIPS), 2020

   [paper] [code] [bibtex]

   @inproceedings{Cherkaoui20a,
     author = {Cherkaoui, Hamza and Sulam, Jeremias and Moreau, Thomas},
     title = {Learning to solve TV regularised problems with unrolled algorithms},
     booktitle = {34th Conference and Workshop on Neural Information Processing Systems ({NeurIPS})},
     year = {2020},
     address = {Virtual-only Conference},
   }

2019

1. Sparsity-based blind deconvolution of neural activation signal in fMRI

   Hamza Cherkaoui, Thomas Moreau, Abderrahim Halimi, and 1 more author

   In 44th International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2019

   [paper] [bibtex]

   @inproceedings{Cherkaoui19a,
     author = {Cherkaoui, Hamza and Moreau, Thomas and Halimi, Abderrahim and Ciuciu, Philippe},
     title = {Sparsity-based blind deconvolution of neural activation signal in {fMRI}},
     booktitle = {44th International Conference on Acoustics, Speech and Signal Processing {(ICASSP)}},
     year = {2019},
     pages = {1323--1327},
     address = {England},
     doi = {10.1109/ICASSP.2019.8683358},
   }

2. fMRI BOLD signal decomposition using a multivariate low-rank model

   Hamza Cherkaoui, Thomas Moreau, Abderrahim Halimi, and 1 more author

   In 27th European Signal Processing Conference (EUSIPCO), 2019

   [paper] [bibtex]

   @inproceedings{Cherkaoui19b,
     author = {Cherkaoui, Hamza and Moreau, Thomas and Halimi, Abderrahim and Ciuciu, Philippe},
     title = {{fMRI BOLD} signal decomposition using a multivariate low-rank model},
     booktitle = {27th European Signal Processing Conference ({EUSIPCO})},
     year = {2019},
     pages = {1--5},
     address = {Spain},
     doi = {10.23919/EUSIPCO.2019.8902660},
   }

2018

1. Analysis vs synthesis-based regularization for combined compressed sensing and parallel MRI reconstruction at 7 tesla

   Hamza Cherkaoui, Loubna El Gueddari, Carole Lazarus, and 6 more authors

   In 26th European Signal Processing Conference (EUSIPCO), 2018

   [paper] [bibtex]

   @inproceedings{Cherkaoui18a,
     author = {Cherkaoui, Hamza and El Gueddari, Loubna and Lazarus, Carole and Grigis, Antoine and Poupon, Fabrice and Vignaud, Alexandre and Farrens, Samuel and Starck, Jean-Luc and Ciuciu, Philippe},
     title = {Analysis vs synthesis-based regularization for combined compressed sensing and parallel {MRI} reconstruction at 7 tesla},
     booktitle = {26th European Signal Processing Conference ({EUSIPCO})},
     year = {2018},
     pages = {36--40},
     address = {Italy},
     doi = {10.23919/EUSIPCO.2018.8553476},
   }