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Olga Zaghen

@olgatticus.bsky.social
498 followers 130 following 35 posts

MSCA PhD student at AMLab with Erik Bekkers, interested in geometric deep learning, generative models and their intersection 🌐 ✨ bit.ly/olga-zaghen

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Olga Zaghen @olgatticus.bsky.social · 15/04/2026
Best lab in the most wonderful city: the perfect opportunity! Come join us 🦾🌟
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Olga Zaghen @olgatticus.bsky.social · 24/03/2026
thank you ❤️
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Alison Pouplin @alisometry.bsky.social · 23/03/2026
Checkout this cute blogpost on Jacobi fields! They were used to link Variational and Riemannian flow matching in Olga’s paper ☀️
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Olga Zaghen @olgatticus.bsky.social · 23/03/2026
My hope is that by making this concept more intuitive, we’ll see it unlock new applications in future ML research. Feedback welcome! :)
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Olga Zaghen @olgatticus.bsky.social · 23/03/2026
In case you are wondering: they aren't just a theoretical curiosity! We actually relied on Jacobi fields to prove key results in our recent paper, Riemannian Variational Flow Matching for Material and Protein Design 🪩 (arxiv.org/abs/2502.129...).
arxiv.org
Riemannian Variational Flow Matching for Material and Protein Design
We present Riemannian Gaussian Variational Flow Matching (RG-VFM), a geometric extension of Variational Flow Matching (VFM) for generative modeling on manifolds. Motivated by the benefits of VFM, we d...
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Olga Zaghen @olgatticus.bsky.social · 23/03/2026
🔮 Working on ML on curved manifolds? Don't miss out on Jacobi Fields! 🔮 I wrote a quick, highly visual and hopefully accessible introduction to the topic: "Jacobi Fields in Machine Learning" 🤠 Check it out here: olgatticus.github.io/blog/jacobi-...!
olgatticus.github.io
Jacobi Fields in Machine Learning — Olga Zaghen
An intuitive introduction to Jacobi fields and their applications in machine learning on Riemannian manifolds.
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Olga Zaghen @olgatticus.bsky.social · 23/03/2026
My hope is that by making this concept more intuitive, we’ll see it unlock new applications in future ML research. Feedback welcome! :)
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Olga Zaghen @olgatticus.bsky.social · 23/03/2026
In case you are wondering: they aren't just a theoretical curiosity! We actually relied on Jacobi fields to prove key results in our recent paper, Riemannian Variational Flow Matching for Material and Protein Design 🪩 (arxiv.org/abs/2502.129...).
arxiv.org
Riemannian Variational Flow Matching for Material and Protein Design
We present Riemannian Gaussian Variational Flow Matching (RG-VFM), a geometric extension of Variational Flow Matching (VFM) for generative modeling on manifolds. Motivated by the benefits of VFM, we d...
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Sara Magliacane hiring PhDs in Saarland @smaglia.bsky.social · 13/03/2026
🚨2 PhD positions with me @amlab.bsky.social on learning causally grounded concepts 🚨 Are you interested in improving the #interpretability #robustness and #safety of AI by integrating #causal reasoning? Join us in beautiful Amsterdam 🇳🇱🌷🚲 Deadline: 20 April www.academictransfer.com/en/jobs/3593...
academictransfer.com
2 PhD Positions on Learning Causally Grounded Concepts for Safe AI
Are you interested in improving the interpretability, robustness and safety of AI by integrating causal reasoning? The Causality team in the AMLab group at the University of Amsterdam is looking for 2...
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Olga Zaghen @olgatticus.bsky.social · 04/03/2026
Interested in the analysis of GNN expressive power, limitations of the WL test or more in general in the definition of complete metrics on graphs? 👀 Check out this super cool work led by @martin.topology.rocks !🔥
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Olga Zaghen @olgatticus.bsky.social · 02/05/2025
have fun!!! 🔥
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Olga Zaghen @olgatticus.bsky.social · 06/03/2025
Super happy to share our work was accepted as an Oral at the Delta Workshop @ ICLR 2025! 🎉 Can’t wait to talk about it in Singapore 😎 Congrats to the amazing team @eijkelboomfloor.bsky.social @alisometry.bsky.social @erikjbekkers.bsky.social 🔥
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Max Zhdanov @maxxxzdn.bsky.social · 05/03/2025
🤹 Excited to share Erwin: A Tree-based Hierarchical Transformer for Large-scale Physical Systems joint work with @wellingmax.bsky.social and @jwvdm.bsky.social preprint: arxiv.org/abs/2502.17019 code: github.com/maxxxzdn/erwin
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Floor Eijkelboom @eijkelboomfloor.bsky.social · 19/02/2025
Super excited about this project!! Amazing work by @olgatticus.bsky.social and others ❤️
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Olga Zaghen @olgatticus.bsky.social · 19/02/2025
Stay tuned for further analyses and experiments! ✨ A huge thanks to my brilliant collaborators for all their efforts and invaluable guidance: @eijkelboomfloor.bsky.social, @alisometry.bsky.social and @erikjbekkers.bsky.social 🔥 🧵5/5
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Olga Zaghen @olgatticus.bsky.social · 19/02/2025
We test our method on a checkerboard distribution on the sphere 🏁🌐, yielding promising results when compared to Euclidean and non-variational methods. 🧵4/5
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Olga Zaghen @olgatticus.bsky.social · 19/02/2025
By directly encoding the manifold, we introduce Riemannian-Gaussian-VFM, offering a fresh perspective on geometry-informed generative modeling. We also discuss how our approach relates to the previously mentioned methods. 🌍🌎🌏 🧵3/5
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Olga Zaghen @olgatticus.bsky.social · 19/02/2025
Inspired by Riemannian Flow Matching, we extend the Variational Flow Matching (VFM) objective to build a geometry-aware flow model. 🌊 Interestingly, VFM is particularly well-suited for explicitly parametrizing the support manifold of the distribution! 💅💪 🧵2/5
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Olga Zaghen @olgatticus.bsky.social · 19/02/2025
Variational Flow Matching goes Riemannian! 🔮 In this preliminary work, we derive a variational objective for probability flows 🌀 on manifolds with closed-form geodesics, and discuss some interesting results. Dream team: Floor, Alison & Erik (their @ below) 💥 📜 arxiv.org/abs/2502.12981 🧵1/5
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ComBayNS Workshop @combayns-workshop.bsky.social · 13/02/2025
Welcome to our Bluesky account! 🦋 We're excited to announce ComBayNS workshop: Combining Bayesian & Neural Approaches for Structured Data 🌐 Submit your paper and join us in Rome for #IJCNN2025! 🇮🇹 📅 Papers Due: March 20th, 2025 📜 Webpage: combayns2025.github.io
combayns2025.github.io
Home - ComBayNS 2025 Workshop @ IJCNN 2025
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Federico Errica @federico-errica.bsky.social · 27/01/2025
🌟 Call for Papers – ComBayNS Workshop at IJCNN 2025 🌟 Workshop page: combayns2025.github.io We are thrilled to announce the #workshop “ComBayNS: Combining Bayesian and Neural approaches for Structured data” at the upcoming International Joint Conference on Neural Networks (#IJCNN). A thread 🧵
combayns2025.github.io
Home - ComBayNS 2025 Workshop @ IJCNN 2025
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Max Zhdanov @maxxxzdn.bsky.social · 26/01/2025
This is how it should be: one file, ctrl+c ctrl+v runnable from a notebook. I really do not want to mess with omegaconf, hydra or, the worst, a custom configuration system just to figure out how your model runs.
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Olga Zaghen @olgatticus.bsky.social · 07/01/2025
👮‍♀️🚨🚔
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Olga Zaghen @olgatticus.bsky.social · 20/12/2024
❤️❤️❤️
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Olga Zaghen @olgatticus.bsky.social · 16/12/2024
of course !!
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Olga Zaghen @olgatticus.bsky.social · 13/12/2024
we also celebrate it in some areas of Italy - like where I come from - where "Santa Lucia" is even more popular than Santa Claus for children!!
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Olga Zaghen @olgatticus.bsky.social · 13/12/2024
haters will say photoshop!!
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AMLab @amlab.bsky.social · 09/12/2024
If you are attending #NeurIPS2024🇨🇦, make sure to check out AMLab's 11 accepted papers ...and to have a chat with our members there! 👩‍🔬🍻☕ Submissions include generative modelling, AI4Science, geometric deep learning, reinforcement learning and early exiting. See the thread for the full list! 🧵1 / 12
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Olga Zaghen @olgatticus.bsky.social · 09/12/2024
So cooooool!!
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Alejandro García @algarciacast.bsky.social · 07/12/2024
Come and check out our poster on the UniReps workshop at @neuripsconf.bsky.social ! Thanks again to the amazing Giovanni Marchetti, Martina Scolamiero, and Danica Kragic ❤️ See more at: arxiv.org/abs/2409.10967
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Floor Eijkelboom @eijkelboomfloor.bsky.social · 06/12/2024
🐑 Come and check out Variational Flow Matching for Graph Generation next week at @neuripsconf.bsky.social ! 🐑 Wed 11 Dec 11 a.m. PST — 2 p.m. PST West Ballroom A-D #7103 arxiv.org/abs/2406.04843
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Olga Zaghen @olgatticus.bsky.social · 06/12/2024
Go chat with ✨the Davids✨, super smart and cool guys!
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Sai Prasanna @saiprasanna.in · 26/11/2024
Arxiv sharing reminder pdf ❌ abs ✅
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Ravid Shwartz Ziv @shwartzzzivravid.bsky.social · 25/11/2024
Looking at ICLR submissions with the lowest score - What a work of art! 🧵
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Olga Zaghen @olgatticus.bsky.social · 23/11/2024
of course!:)
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Olga Zaghen @olgatticus.bsky.social · 21/11/2024
I already added you my dear! and put a profile picture! (If you are Guille)
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AMLab @amlab.bsky.social · 21/11/2024
Meet our Lab's members: staff, postdocs and PhD students! :) With this starter pack you can easily connect with us and keep up to date with all the member's research and news 🦋 go.bsky.app/8EGigUy
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Olga Zaghen @olgatticus.bsky.social · 21/11/2024
✅
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AMLab @amlab.bsky.social · 21/11/2024
🚨 Happening today! 🚨 ⏰ 4 PM CET / 10 AM EST 👩‍💻 Zoom link is in the link below 🏢 You can attend in person in L3.36, Science Park, University of Amsterdam Join us for this exciting talk! :)
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Olga Zaghen @olgatticus.bsky.social · 21/11/2024
added you already! :))
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Olga Zaghen @olgatticus.bsky.social · 21/11/2024
of course :))
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Olga Zaghen @olgatticus.bsky.social · 21/11/2024
of course! :))
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Olga Zaghen @olgatticus.bsky.social · 21/11/2024
cool! sure :))
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Olga Zaghen @olgatticus.bsky.social · 21/11/2024
done!!
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Olga Zaghen @olgatticus.bsky.social · 20/11/2024
done! :)
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Olga Zaghen @olgatticus.bsky.social · 20/11/2024
of course !
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Olga Zaghen @olgatticus.bsky.social · 20/11/2024
sure! :))
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Olga Zaghen @olgatticus.bsky.social · 20/11/2024
sure! :)
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Sharvaree Vadgama @sharvaree.bsky.social · 20/11/2024
Let us know if you would like to be added to the list. Looking forward to seeing the GDL community here 🦋 Also, follow @gram-org.bsky.social for GRaM workshop related updates.
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Olga Zaghen @olgatticus.bsky.social · 20/11/2024
A starter pack for researchers interested in Geometric Deep Learning - in the broadest sense possible! Let me know if you would like to be listed. :) Thanks @sharvaree.bsky.social for the idea! go.bsky.app/7h8sek
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