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Gérôme Andry @Neurips2025

@gandry.bsky.social
384 followers 198 following 17 posts

PhD student @universitedeliege.bsky.social with @glouppe.bsky.social. @frsFNRS research fellow. Focuses on AI for scientific discoveries 🤖

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Reposted by Gérôme Andry @Neurips2025
Gilles Louppe @glouppe.bsky.social · 22/05/2026
"Accept (spotlight)" at ICML'26 😎 Our paper brings particle filters back to life: autoregressive diffusion models + posterior sampling yield optimal proposals for Bayesian filtering, scaling up to GenCast-sized systems. arxiv.org/abs/2605.20028 w/ Thomas Savary and @francois-rozet.bsky.social
arxiv.org
Training-Free Bayesian Filtering with Generative Emulators
Bayesian filtering is a well-known problem that aims to estimate plausible states of a dynamical system from observations. Among existing approaches to solve this problem, particle filters are theoret...
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 06/12/2025
We did 😇
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 06/12/2025
If you are interested in diffusion models for dynamical systems and posterior inference, stop by our poster at ML4PS workshop (@neuripsconf.bsky.social) at 11am! Come and see how we apply modern methods to the challenging field of global weather inference!
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Martin Trapp @trappmartin.eurosky.social · 05/12/2025
Beautiful keynote by @gaelvaroquaux.bsky.social at @euripsconf.bsky.social .
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 27/11/2025
Feel free to reach out at the conference for discussing about diffusion models, posterior inference and dynamical systems 😇
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Reposted by Gérôme Andry @Neurips2025
Gilles Louppe @glouppe.bsky.social · 27/11/2025
Our Montefiore Science with AI lab will be at #NeurIPS2025 presenting 1 paper at the main conference and 3 papers at workshops. If you are attending, feel free to reach out with the crew to discuss science, AI, or just to say hi! (I won't attend this year unfortunately 🌱)
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 08/10/2025
Special shoutout to @sachalewin.bsky.social for a huge code refactor + super clean GitHub 𝐰𝐢𝐤𝐢. 👉 Explore the repo, try Appa (weights on Hugging Face huggingface.co/datasets/mon...), and let us know what you think!
huggingface.co
montefiore-sail/appa · Datasets at Hugging Face
We’re on a journey to advance and democratize artificial intelligence through open source and open science.
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 08/10/2025
Big thanks to everyone who made this possible 🙏 @sachalewin.bsky.social, @francois-rozet.bsky.social, @orochman.bsky.social, Victor Mangeleer @mapirlet.bsky.social, Elise Faulx, Marilaure Grégoire and our promoter @glouppe.bsky.social for his tremendous support.
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 08/10/2025
Next stop: 𝐒𝐚𝐧 𝐃𝐢𝐞𝐠𝐨! ✈️ We’ll present Appa at the workshop and continue improving: • Incorporating real observations • Reducing temporal error growth … and we’d love your suggestions or feedback!
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 08/10/2025
We believe Appa carries important messages. 🌍 How to flexibly incorporate observations to tackle diverse assimilation tasks in a 𝐮𝐧𝐢𝐟𝐢𝐞𝐝 𝐟𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤? What are the advantages of compressing data for inference at this scale? And what are the limitations?
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 08/10/2025
This release builds on our recently submitted ML4PS @ NeurIPS workshop paper, and already goes beyond the first arXiv version (April 2025, arxiv.org/abs/2504.18720). Appa now uses a simpler architecture and still reaches strong performance with ~𝟓𝟑𝟎× 𝐜𝐨𝐦𝐩𝐫𝐞𝐬𝐬𝐢𝐨𝐧!
arxiv.org
Appa: Bending Weather Dynamics with Latent Diffusion Models for Global Data Assimilation
Deep learning has transformed weather forecasting by improving both its accuracy and computational efficiency. However, before any forecast can begin, weather centers must identify the current atmosph...
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 08/10/2025
🚀 After more than a year of work — and many great discussions with curious minds & domain experts — we’re excited to announce the public release of 𝐀𝐩𝐩𝐚, our latent diffusion model for global data assimilation! Check the repo and the complete wiki! github.com/montefiore-s...
github.com
GitHub - montefiore-sail/appa: Code for the publication "Appa: Bending Weather Dynamics with Latent Diffusion Models for Global Data Assimilation".
Code for the publication "Appa: Bending Weather Dynamics with Latent Diffusion Models for Global Data Assimilation". - montefiore-sail/appa
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Reposted by Gérôme Andry @Neurips2025
Gilles Louppe @glouppe.bsky.social · 04/06/2025
Positions remain open! Both PhD and postdoctoral opportunities are available on scientific foundation models. An additional position is also available on AI for regional climate models (jointly with @xavierfettweis.bsky.social). Do not hesitate to apply!
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François Rozet @francois-rozet.bsky.social · 23/05/2025
📢 I am looking for AI post-doc/research/engineer positions in Europe (Paris, London, Zurich, ...) starting 2026. My work revolves around generative modeling and AI for Science, with 4+ publications at top conferences during my PhD. If you are hiring, please reach out! If not, please repost 🔁
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arXiv cs.LG Machine Learning @cslg-bot.bsky.social · 29/04/2025
Andry, Rozet, Lewin, Rochman, Mangeleer, Pirlet, Faulx, Gr\'egoire, Louppe: Appa: Bending Weather Dynamics with Latent Diffusion Models for Global Data Assimilation arxiv.org/abs/2504.18720 arxiv.org/pdf/2504.18720 arxiv.org/html/2504.18720
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 29/04/2025
Kudos again @sachalewin.bsky.social for the visualizations! montefiore-sail.github.io/appa/
montefiore-sail.github.io
Appa Weather Model
🦬 Appa: Bending Weather Dynamics with Latent Diffusion Models for Global Data Assimilation
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 29/04/2025
arxiv.org/abs/2504.18720
arxiv.org
Appa: Bending Weather Dynamics with Latent Diffusion Models for Global Data Assimilation
Deep learning has transformed weather forecasting by improving both its accuracy and computational efficiency. However, before any forecast can begin, weather centers must identify the current atmosph...
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 29/04/2025
After several month, our work is out! 🦬 Look at our new paper with the team! Thanks to all of them!! @glouppe.bsky.social @sachalewin.bsky.social @francois-rozet.bsky.social @orochman.bsky.social @mapirlet.bsky.social Victor Mangeleer Elise Faulx
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 09/04/2025
Let's start this workshop @ecmwf.int about data assimilation! 🌍
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Reposted by Gérôme Andry @Neurips2025
François Rozet @francois-rozet.bsky.social · 07/03/2025
🔥 Azula 0.3.0 is out with many new features, including new super fast samplers (LMS, DPM-Solver), new guidance methods (DPS, MMPS) and new plugins (VDM, EMD, EMD2). Check it out!
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Gilles Louppe @glouppe.bsky.social · 05/03/2025
Now accepted at @tmlr-pub.bsky.social 🥳
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Gilles Louppe @glouppe.bsky.social · 17/01/2025
What channels would you recommend for sharing PhD/post-doc position offers? The theme is foundation models for the physical sciences, with weather as a specific target.
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Reposted by Gérôme Andry @Neurips2025
Gilles Louppe @glouppe.bsky.social · 30/12/2024
📣 Hiring! I am looking for PhD/postdoc candidates to work on foundation models for science at @ULiege, with a special focus on weather and climate systems. 🌏 Three positions are open around deep learning, physics-informed FMs and inverse problems with FMs.
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 11/12/2024
I can't breath anymore but it was so nice!
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 29/11/2024
So much work """just""" for an autoencoder... 🤯😵
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Reposted by Gérôme Andry @Neurips2025
lebellig @lebellig.bsky.social · 28/11/2024
Exploring data assimilation with score-based models—and as a bonus, I know what a Markov blanket is! Score-based Data Assimilation by @francois-rozet.bsky.social and @glouppe.bsky.social
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 19/11/2024
I'm interested too 🤓
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Gérôme Andry @Neurips2025 @gandry.bsky.social · 19/11/2024
Whoops 😅
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