The Data Science department brings together four teams with recognized and complementary expertise, covering the modeling, collection, management, analysis and construction of data and knowledge (A&O, Bioinfo, LaHDAK, Rocs), making it possible to explore synergies between expertise related to data, learning and optimization, particularly in connection with the fields of bioinformatics, IoT and data graphs.
Digital traces of all human activities are now available in all fields, data that is often massive, heterogeneous, dynamic and of variable quality (the 4 V’s of Big Data: Volume, Variety, Velocity, Veracity). Their exploitation leads to the definition of a fourth scientific paradigm: the design and validation of hypotheses, theoretical models and algorithms, guided by the data and in interaction with domain experts. The Data Science department is interested in robustly addressing the challenges of the 4Vs, in terms of scaling up in the face of data volume and velocity, and resisting diversity and quality bias. These goals define new computational issues in storage, communication, analysis and processing optimization, data query and enrichment, knowledge discovery, and model learning.
With nearly 40 researchers and teacher-researchers, the Data Science department covers a broad spectrum of fundamental and application-related topics: databases, data mining, semantic web, knowledge representation, algorithms, combinatorics, stochastic and distributed optimization, statistical learning and neural networks, communication networks, simulation. It also has extensive expertise in interdisciplinary research and dialogue with experts in the application domains (particularly in biology, medicine, human and social sciences, and experimental physics), allowing privileged access to data of interest and to the evaluation of models and algorithms.
Coordination
Algorithmes, apprentissage et calcul, Sciences des Données
Alex Davey, Théo Rudkiewicz, Stéphane Rivaud, Stella Douka, Félix Houdouin, et al.. The Neuron Addition Problem: A Survey on Growing Neural Networks. 2026. ⟨hal-05842579⟩
Théophile Sanchez, Pierre Jobic, Cyril Regan, Paul Verdu, Guillaume Charpiat, et al.. Attentive-SPIDNA: Attention-based neural networks for population genetics. 2026. ⟨hal-05688902⟩
Bruna Lopes, Gabriel Schwartz, Sylvain Chevallier, Raphael Y de Camargo, Bruno Aristimunha. Learning aligned EEG representations with subject-specific encoders. Scientific Reports, 2026, ⟨10.1038/s41598-026-69220-z⟩. ⟨hal-05758650⟩
Léo Planche, Anna Ilina, María C Ávila-Arcos, Flora Jay, Emilia Huerta-Sanchez, et al.. An archaic reference-free method to jointly infer Neanderthal and Denisovan introgressed segments in modern human genomes. Molecular Biology and Evolution, 2025, ⟨10.1093/molbev/msag235⟩. ⟨hal-05747173⟩
Marco Rosario Capodiferro, Léo Planche, Emily M Breslin, Linda Ongaro, María C Ávila-Arcos, et al.. Archaic ancestry inference in imputed ancient human genomes. Nature Communications, 2026, 17 (1), pp.9480. ⟨10.1038/s41467-026-76204-0⟩. ⟨hal-05747161⟩
Dylan Sechet, Marc Evrard, Matthieu Kowalski. Simulation-Based Inference for Plate Reverb System Identification. DAFX 2026 – 29th International Conference on Digital Audio Effects, Sep 2026, Cambridge, United States. ⟨hal-05742718⟩
Brahim Driss, Alex Davey, Riad Akrour. PB$^2$: Preference Space Exploration via Population-Based Methods in Preference-Based Reinforcement Learning. RLC 2026 – Third Reinforcement Learning Conference, Aug 2026, Montreal, Canada. ⟨hal-05732524⟩
Bruno Aristimunha, Dung Truong, Pierre Guetschel, Seyed Yahya Shirazi, Isabelle Guyon, et al.. EEG Foundation Challenge: From Cross-Task to Cross-Subject EEG Decoding. NeurIPS 2025 – 39th Annual Conference on Neural Information Processing Systems, Dec 2025, San Diego, United States. ⟨hal-05714360⟩
Bruno Aristimunha, Ce Ju, Antoine Collas, Florent Bouchard, Ammar Mian, et al.. SPD Learn: A Geometric Deep Learning Python Library for Neural Decoding Through Trivialization. 2026. ⟨hal-05714371⟩
Benedictus Kent Rachmat, Thomas Gerald, Zheng Zhang, Cyril Grouin. QA Analysis in Medical and Legal Domains: A Survey of Data Augmentation in Low-Resource Settings. ACL 2025 – 63rd Annual Meeting of the Association for Computational Linguistics (Volume 4: Student Research Workshop), ACL, Jul 2025, Vienna, Austria. pp.1132-1144, ⟨10.18653/v1/2025.acl-srw.89⟩. ⟨hal-05683004⟩
Flavio Tuteri, Sergio Chibbaro, Alexandros Alexakis. Intermittency in Shell Models of Turbulent Cascades: from Single-Branch to Multi-Branch. 2026. ⟨hal-05679006⟩
Bruno Aristimunha, Igor Carrara, Pierre Guetschel, Sara Sedlar, Pedro Rodrigues, et al.. Mother of all BCI Benchmarks. 2026, ⟨swh:1:dir:6d89a182d4e69572a73784c6616ef1cee5493d77⟩. ⟨hal-05675918⟩
Bruno Aristimunha Pinto. Learning Representations of Electroencephalogram using Deep Learning. Machine Learning [cs.LG]. Université Paris-Saclay; Universidade Federal do ABC, 2026. English. ⟨NNT : 2026UPASG016⟩. ⟨tel-05668261⟩
Eva Boguslawski. Politiques d’apprentissage par renforcement pour l’exploitation de réseaux électriques avec actions continues dans des architectures centralisées et décentralisées. Intelligence artificielle [cs.AIArtificial Intelligence]. Université Paris-Saclay, 2026. Français. ⟨NNT : 2026UPASG028⟩. ⟨tel-05657134⟩
Hugo Thimonier, José Lucas de Melo Costa, Fabrice Popineau, Arpad Rimmel, Bich-Liên Doan. T-JEPA: Augmentation-Free Self-Supervised Learning for Tabular Data. ICLR 2025 – International Conference on Learning Representations, Apr 2025, Sinagpore, Singapore. ⟨10.48550/arXiv.2410.05016⟩. ⟨hal-05624276⟩
Jean-Baptiste Malagnoux, Matthieu Kowalski. Connecting the Dots Between CDL and NMF: A Shared Framework for Time-Frequency Decomposition. IEEE Transactions on Signal Processing, 2026, 74, pp.2448-2460. ⟨10.1109/TSP.2026.3698440⟩. ⟨hal-05635856⟩
Lucas Heck dos Santos, João Guilherme Prado Barbon, Sylvain Chevallier, Denis G Fantinato. Non-Linear Activation Functions for Deep Riemannian Neural Networks. ESANN 2026 – 34th European Symposium on Artificial Neural Networks, Computational Intelligence and Machine Learning, Apr 2026, Bruges, Belgium. pp.535-540, ⟨10.14428/esann/2026.ES2026-312⟩. ⟨hal-05616889⟩
Li-Qing Jiang, Amanda Fay, Jens Daniel Müller, Luke Gregor, Alizée Roobaert, et al.. Synthesis of data products for ocean carbonate chemistry. Earth System Science Data, 2026, 18 (2), pp.1405 – 1462. ⟨10.5194/essd-18-1405-2026⟩. ⟨hal-05607765⟩
Arnaud Quelin, Frederic Austerlitz, Flora Jay. Using supervised machine learning methods to infer demographic history from genomic data. Machine Learning for Evolutionary Genomics Data, May 2024, Heraklion, Greece. ⟨hal-05570974⟩
Arnaud Quelin, Jazeps Medina Tretmanis, Emilia Huerta-Sanchez, Frederic Austerlitz, Flora Jay. Assessing the contribution of ancient genomic data to the inference of historical demographic parameters. JOBIM 2025 – Journées Ouvertes en Biologie, Informatique et Mathématiques, Jul 2025, Bordeaux, France. ⟨hal-05570966⟩
Jean Cury, Théophile Sanchez, Erik Madison Bray, Jazeps Medina-Tretmanis, María Ávila-Arcos, et al.. Inferring effective population sizes of bacterial populations while accounting for unknown recombination and selection: a deep learning approach. ECML PKDD 2022 – Machine Learning for Microbial Genomics workshop, Sep 2022, Grenoble, France. ⟨hal-05554282⟩
Cyriaque Rousselot, Olivier Allais, Philippe Caillou, Julia Mink, Florian Yger. Pesticide Aerial Concentration : Estimations Toward Population Health Impact Assessment. E4H – Engineering for Health Annual Forum 2025, Nov 2025, Palaiseau (Ecole Polytechnique), France. ⟨hal-05447129⟩
Enrico Marchesini, Eva Boguslawski, Alessandro Leite, Christopher Amato, Matthieu Dussartre, et al.. MARL2GRID-TR: A multi-agent RL benchmark in power grid operations. ICLR 2026 – 14th International Conference on Learning Representations, Apr 2026, Rio de Janeiro, Brazil. ⟨hal-05532479⟩
Ludovic Arnold, Sébastien Rebecchi, Sylvain Chevallier, Hélène Paugam-Moisy. An Introduction to Deep Learning. European Symposium on Artificial Neural Networks (ESANN), Apr 2011, Bruges, Belgium. ⟨hal-01352061⟩
Jean-Baptiste Malagnoux. Apprentissage de dictionnaires convolutifs et factorisation non négative de matrices pour la séparation de sources et les problèmes inverses. Mathématiques [math]. Université Paris-Saclay, 2025. Français. ⟨NNT : 2025UPASG096⟩. ⟨tel-05472451v2⟩
Antoine Szatkownik. Modélisation générative dans un espace latent et évaluation de données synthétiques en génomique des populations. Informatique [cs]. Université Paris-Saclay, 2025. Français. ⟨NNT : 2025UPASG109⟩. ⟨tel-05475569v2⟩
Burak Yelmen, Merve Nur Güler, Tõnu Kollo, Märt Möls, Guillaume Charpiat, et al.. Bias in genome-wide association test statistics due to omitted interactions. RECOMB 2026 – 30th Annual International Conference on Research in Computational Molecular Biology, May 2026, Thessaloniki, Greece. ⟨10.1101/2025.11.21.689603⟩. ⟨hal-05474710⟩
Michael Tangermann, Sylvain Chevallier, Matthias Dold, Pierre Guetschel, Reinmar Kobler, et al.. Learning from small datasets — review of workshop 6 of the 10th International BCI Meeting 2023. Journal of Neural Engineering, 2025, 22 (3), pp.033001. ⟨10.1088/1741-2552/addf80⟩. ⟨hal-05462858⟩
Giovanni Catania, Aurélien Decelle, Cyril Furtlehner, Beatriz Seoane. A theoretical framework for overfitting in energy-based modeling. ICML 2025 – 42nd International Conference on Machine Learning, Jul 2025, Vancouver, Canada. pp.6891-6919. ⟨hal-05466288⟩
Panayiotis Panayiotou, Audrey Poinsot, Alessandro Leite, Nicolas Chesneau, Marc Schoenauer, et al.. CausalProfiler: Generating Synthetic Benchmarks for Rigorous and Transparent Evaluation of Causal Machine Learning. 2026. ⟨hal-05455135⟩
Mathurin Videau, Badr Youbi Idrissi, Alessandro Leite, Marc Schoenauer, Olivier Teytaud, et al.. From Bytes to Ideas: Language Modeling with Autoregressive U-Nets. NeurIPS 2025 – 39th Annual Conference on Neural Information Processing Systems, Dec 2025, San Diego, United States. ⟨10.52202/085713-3144⟩. ⟨hal-05444961⟩
Fernando A Villanea, David Peede, Eli J Kaufman, Valeria Añorve-Garibay, Elizabeth T Chevy, et al.. The MUC19 gene: An evolutionary history of recurrent introgression and natural selection. Science, 2025, 389 (6762), pp.eadl0882. ⟨10.1126/science.adl0882⟩. ⟨hal-05410793⟩
Romain Mussard, Aurélien Gauffre, Ihsan Ullah, Thanh Gia Hieu Khuong, Massih-Reza Amini, et al.. Stylized Meta-Album: Group-bias injection with style transfer to study robustness against distribution shifts. 2025. ⟨hal-05371736⟩
Miriam Bravo-Lopez, Eduardo Arrieta-Donato, Viridiana Villa-Islas, Åshild Joanne Vågene, Ana Villaseñor-Altamirano, et al.. Ancient genomic insights into Salmonella enterica Paratyphi C from Central Mexico. 2025. ⟨hal-05407381⟩
Daniele Noto, Alexandre Allauzen, Sergio Chibbaro. An efficient training method to learn a model of turbulence. The European Physical Journal Plus, 2024, 139 (3), pp.298. ⟨10.1140/epjp/s13360-024-05056-8⟩. ⟨hal-05356011⟩
Eliott Pradeleix, Rémy Hosseinkhan-Boucher, Alena Shilova, Onofrio Semeraro, Lionel Mathelin. Learning Meets Differential Equations: From Theory to Applications Learning non-Markovian Dynamical Systems with Signature-based Encoders. ML-DE 2025 – 2nd Workshop on “Machine Learning Meets Differential Equations: From Theory to Applications”, Oct 2025, Bologna, Italy. pp.1-25. ⟨hal-05379481⟩
Elsa Denakpo, Nicolas Dias, Johann Pitout, Thierry Naas, Dylan Pillai, et al.. Imputing missing minimum inhibitory concentration (MIC) values for Pseudomonas aeruginosa strains with a Denoising AutoEncoder. 2025. ⟨hal-05361361⟩
Qiaomei Fu, Heng Li, Priya Moorjani, Flora Jay, Sergey Slepchenko, et al.. Genome sequence of a 45,000-year-old modern human from western Siberia. Nature, 2014, 514 (7523), pp.445-449. ⟨10.1038/nature13810⟩. ⟨hal-05361150⟩
Francesco Pezzicoli, Valentina Ros, François P. Landes, Marco Baity-Jesi. Class Imbalance in Anomaly Detection: Learning from an Exactly Solvable Model. AISTATS 2025 – 28th International Conference on Artificial Intelligence and Statistics, May 2025, Phuket, Thailand. ⟨10.48550/arXiv.2501.11638⟩. ⟨hal-05332794⟩
Solal Nathan, Guillaume Bied, Elia Pérennès, Philippe Caillou, Bruno Crépon, et al.. JoLA: Job Landscape Aware Job Recommendation. RecSys in HR 2025 – The 5th Workshop on Recommender Systems for Human Resources, in conjunction with the 19th ACM Conference on Recommender Systems, Toine Bogers; Mesut Kaya; Chris Johnson; Jens-Joris Decorte; Guillaume Bied, Sep 2025, Prague, Czech Republic. ⟨hal-05341058⟩
Mathurin Videau, Alessandro Leite, Marc Schoenauer, Olivier Teytaud. Mixture of Experts for Image Classification: What’s the Sweet Spot?. Transactions on Machine Learning Research , 2025. ⟨hal-05329451⟩
Antoine Szatkownik, Aurélien Decelle, Beatriz Seoane, Nicolas Béreux, Léo Planche, et al.. PRIVET: PRoximIty leakage detection Via Extreme value Theory. 2026. ⟨hal-05326013v2⟩
Thibault de Surrel, Florian Yger, Fabien Lotte, Sylvain Chevallier. A probabilistic view on Riemannian machine learning models for SPD matrices. GSI 2025 – 7th International Conference on Geometric Science of Information, Oct 2025, Saint Malo, France. pp.142-151, ⟨10.1007/978-3-032-03924-8_15⟩. ⟨hal-05343695⟩
Aurore Semeux-Bernier, Francesca Bonini, Samuel Medina Villalon, Maria Fratello, Matthieu Kowalski, et al.. Classification of magnetoencephalographic independent components in epilepsy by machine learning. Clinical Neurophysiology, 2025, 180, pp.2111377. ⟨10.1016/j.clinph.2025.2111377⟩. ⟨hal-05324467⟩
Jean-Baptiste Malagnoux, Matthieu Kowalski. Convolutive Sparse Decomposition in Inverse Problems: A Sensor Space Approach. SampTA 2025 – International Conference on Sampling Theory and Applications, Jul 2025, Vienne, Austria. ⟨10.1109/SampTA64769.2025.11133530⟩. ⟨hal-05288460⟩
Vianney Taquet, Vincent Blot, Thomas Morzadec, Louis Lacombe, Nicolas J-B. Brunel. MAPIE: an open-source library for distribution-free uncertainty quantification. ICML 2022 – Workshop Distribution Free and Uncertainty Quantification ICML, Jul 2022, Baltimore / Hybrid, United States. ⟨hal-05232300⟩
Maël Lefeuvre, Michael D. Martin, Flora Jay, Marie-Claude Marsolier, Alexis Corrochano, et al.. GRUPS-rs: a high-performance ancient DNA genetic relatedness estimation software based on pedigree simulations. Bulletins et mémoires de la Société d’Anthropologie de Paris 35(S), Jan 2023, Paris, France. 35 (S), pp.30, 2023, ⟨10.4000/bmsap.11299⟩. ⟨hal-05242408⟩
Maël Lefeuvre, Michael D. Martin, Flora Jay, Marie-Claude Marsolier, Alexis Corrochano, et al.. GRUPS-rs, a high-performance ancient DNA genetic relatedness estimation
software relying on pedigree simulations. JOBIM 2023 – Journées Ouvertes en Biologie, Informatique et Mathématiques, Jun 2023, Multisite, France. ⟨hal-05242467⟩
Alexander Goldberg, Ihsan Ullah, Thanh Gia Hieu Khuong, Benedictus Kent Rachmat, Zhen Xu, et al.. Usefulness of LLMs as an Author Checklist Assistant for Scientific Papers: NeurIPS’24 Experiment. 2025. ⟨hal-05230379⟩
Communication dans un congrès, Communication dans un congrès
Jad Yehya, Mansour Benbakoura, Cédric Allain, Benoît Malezieux, Matthieu Kowalski, et al.. RoseCDL: Robust and scalable convolutional dictionary learning for rare-event detection. AISTATS 2026 – 29th International Conference on Artificial Intelligence and Statistics, Society for Artificial Intelligence and Statistics, May 2026, Tanger, Morocco. ⟨10.48550/arXiv.2509.07523⟩. ⟨hal-05250429⟩
Alice Lacan, Romain André, Michèle Sébag, Blaise Hanczar. In Silico Generation of Gene Expression profiles using Diffusion Models. 2024. ⟨hal-05195584⟩
Thi-Tuyet-Trang Chau, Anna E. Dudek, Hernando Ombao, Sylvain Chevallier. Impact of Surface Ocean CO2 Atlas (SOCAT) observing network extensions on the quantification of global air-sea CO2 fluxes. Science of the Total Environment, In press, 999, pp.180265. ⟨10.1016/j.scitotenv.2025.180265⟩. ⟨hal-05209651⟩
Edgar Jaber, Vincent Blot, Nicolas Brunel, Vincent Chabridon, Emmauel Remy, et al.. Conformal Approach to Gaussian Process Surrogate Evaluation with Coverage Guarantees. Journal of Machine Learning for Modeling and Computing, 2025, 6 (3), pp.37-68. ⟨10.1615/JMachLearnModelComput.2025054687⟩. ⟨hal-05161190⟩
Nicolas Atienza. Towards Reliable ML : Leveraging Multi-Modal Representations, Information Bottleneck and Extreme Value Theory. Machine Learning [stat.ML]. Université Paris-Saclay, 2025. English. ⟨NNT : 2025UPASG025⟩. ⟨tel-05140441⟩
Florent Michel, Benoît Malézieux, Matthieu Kowalski, Thomas Moreau. L’entropie comme mesure de difficulté des problèmes inverses. GRETSI’23 – XXIXème Colloque Francophone de Traitement du Signal et des Images, Aug 2023, Grenoble, France. pp.1013-1016. ⟨hal-05132642⟩
Guillaume Attuel, Matthieu Kowalski. Disentangling Myth from Reality: A Plea for exploring New Avenues. QIP25 – Quantum Information and Probability: from Foundations to Engineering, Andrei Khrennikov, Jun 2025, Vaxjö, Sweden. ⟨hal-05114054v2⟩
Gianfranco Durin, Vincenzo Maria Schimmenti, Marco Baiesi, Arianna Casiraghi, Alessandro Magni, et al.. Earthquake-like dynamics in ultrathin magnetic film. Physical Review B, 2024, 110, pp.L020405. ⟨10.1103/PhysRevB.110.L020405⟩. ⟨hal-04352576⟩
Cyriaque Rousselot, Olivier Allais, Philippe Caillou, Julia Mink, Florian Yger. Assessing the Impact of Pesticide Exposure on Population Health Using Large-Scale Data Integration and Modelling. E4H Annual Forum 2024 – Engineering for Health Annual Forum, Nov 2024, Palaiseau (Ecole Polytechnique), France. ⟨hal-04991195⟩
Communication dans un congrès, Communication dans un congrès
Stéphane Rivaud, Louis Fournier, Thomas Pumir, Eugene Belilovsky, Michael Eickenberg, et al.. PETRA: Parallel End-to-end Training with Reversible Architectures. ICLR 2025 – 13th International Conference on Learning Representations, Apr 2025, Singapour, Singapore. ⟨hal-04594647v2⟩
Cyriaque Rousselot, Olivier Allais, Philippe Caillou, Julia Mink, Florian Yger. Assessing Impact of Pesticide Exposure on Child Health using Large-Scale Data Integration and Modelling. Workshop 2024 – Qualité de l’Air, Agriculture et Santé Humaine, Nov 2024, Saint-Rémy-lès-Chevreuses, France. ⟨hal-04991175⟩
Maria Sayu Yamamoto. Addressing the Large Variability of EEG Data with Riemannian Geometry : Toward Designing Reliable Brain-Computer Interfaces. Machine Learning [cs.LG]. Université Paris-Saclay, 2024. English. ⟨NNT : 2024UPASG098⟩. ⟨tel-04967163⟩