DeepSelectGene: Apprentissage profond à partir de données de génotypes et application à la sélection génomique (2023-xx, 25%)
Sihan’s thesis focuses on deep learning generative models applied to genotyping data in animal genetics. His thesis supervisor is Eric Barrey, at INRAE’s Animal Genetics department, and the thesis is co-supervised by Blaise Hanczar and myself. It is financed 100% by INRAE via the DIGIT-BIO metaprogramme.
PhD manucript
Journal papers
GigaScience
Learning inherent genetic patterns and trait associations with deep generative models for discrete genotype simulation
Sihan Xie, Thierry Tribout, Didier Boichard, Blaise Hanczar, Julien Chiquet, and Eric Barrey
Deep generative models open new avenues for simulating realistic genomic data while preserving privacy and addressing data accessibility constraints. While previous studies have primarily focused on generating gene expression or haplotype data, this study explores generating genotype data in both unconditioned and phenotype-conditioned settings, which is inherently more challenging due to the discrete nature of genotype data.We developed and evaluated commonly used generative models, including Variational Autoencoders (VAEs), Diffusion Models, and Generative Adversarial Networks (GANs), and proposed adaptation tailored to discrete genotype data. We conducted extensive experiments on large-scale datasets, including all chromosomes from cow and multiple chromosomes from human. Model performance was assessed using a well-established set of metrics drawn from both deep learning and quantitative genetics literature. Our results show that these models can effectively capture genetic patterns and preserve genotype-phenotype association.As deep generative models are able to reproduce key characteristics of genotype data, they can serve as direct tools for genotype-phenotype simulation, while also enabling privacy-preserving data sharing. Our findings provide a comprehensive evaluation of these models and offer practical guidance for future research in genotype simulation.
@article{xie2026gigascience,author={Xie, Sihan and Tribout, Thierry and Boichard, Didier and Hanczar, Blaise and Chiquet, Julien and Barrey, Eric},title={Learning inherent genetic patterns and trait associations with deep generative models for discrete genotype simulation},journal={GigaScience},pages={giag044},year={2026},month=apr,issn={2047-217X},doi={10.1093/gigascience/giag044},url={https://doi.org/10.1093/gigascience/giag044},}