PhD (M/F): Invariance and transferability in generative models
New
- FTC PhD student / Offer for thesis
- 36 months
- BAC+5
This offer is available in English version
This offer is open to people with a document recognizing their status as a disabled worker.
Offer at a glance
The Unit
Institut de recherche en informatique et systèmes aléatoires
Contract Type
FTC PhD student / Offer for thesis
Working hHours
Full Time
Workplace
35042 RENNES
Contract Duration
36 months
Date of Hire
01/10/2026
Remuneration
2300 € gross monthly
Apply Application Deadline : 27 July 2026 23:59
Job Description
Thesis Subject
In recent years, generative models such as diffusion or flow matching have proved to be immensely successful to generate many types of data, from images and videos to text or sound. On the theoretical side, various aspects of these models have been examined, from their generalization to the approximation errors due to various stages of discretization.
Naturally, generative models have been defined for many structured data distributions, such as point clouds or graphs. Such data exhibits two crucial, specific properties: 1) they are invariant under various group symmetries (often permutation), and 2) models need to be able to generate samples of different sizes, e.g. training on/generating point clouds with varying number of points. A proper understanding of these properties, both empirically and theoretically, is still crucially missing in the literature.
The goal of this PhD is to explore generative models that exhibit symmetry invariances and size transferability. The main focus will be theoretical: we will aim to characterize what properties need to be satisfied by the various ingredients of these models for good generalization and size transferability, and in a second part, examine if models actually used in practice such as Graph Neural Networks do satisfy these conditions.
Your Work Environment
The candidate will be attached to IRISA's Compact team.
About the lab
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www.irisa.fr
IRISA is one of France's largest research laboratories (over 850 people) in the field of computer science and information technology. Structured into seven scientific departments, IRISA is a laboratory of excellence whose scientific priorities are bioinformatics, systems security, new software architectures, virtual reality, Big Data analysis and artificial intelligence. IRISA is at the heart of the digital transition of society and innovation in the fields of cybersecurity, health, environment and ecology, transport, robotics, energy, culture and artificial intelligence.
The position is located in a sector covered by the protection of scientific and technical potential (PPST), and therefore requires, in accordance with regulations, that your arrival be authorized by the competent MESR authority.
Compensation and benefits
Compensation
2300 € gross monthly
Annual leave and RTT
44 jours
Remote Working practice and compensation
Pratique et indemnisation du TT
Transport
Prise en charge à 75% du coût et forfait mobilité durable jusqu’à 300€
About the offer
| Offer reference | UMR6074-NICKER-008 |
|---|---|
| CN Section(s) / Research Area | Information sciences: processing, integrated hardware-software systems, robots, commands, images, content, interactions, signals and languages |
About the CNRS
The CNRS is a major player in fundamental research on a global scale. The CNRS is the only French organization active in all scientific fields. Its unique position as a multi-specialist allows it to bring together different disciplines to address the most important challenges of the contemporary world, in connection with the actors of change.
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