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Pierre-Alexandre Mattei

@pamattei

Research scientist, Inria. Statistical machine learning.

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06.12.2023
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Latest posts by Pierre-Alexandre Mattei @pamattei

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Congratulations to everyone who got their @neuripsconf.bsky.social papers accepted ๐ŸŽ‰๐ŸŽ‰๐ŸŽ‰

At #EurIPS we are looking forward to welcoming presentations of all accepted NeurIPS papers, including a new โ€œSalon des Refusรฉsโ€ track for papers which were rejected due to space constraints!

19.09.2025 09:13 ๐Ÿ‘ 50 ๐Ÿ” 16 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 5

ยซย Can you train a standard classifier without labelsย ?ย ยป was the question we tried to investigate in this survey. Very happy to see @louisohl.bsky.social โ€˜s final PhD projet published in ACM CSUR!

15.09.2025 16:17 ๐Ÿ‘ 5 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Is your company interested in reaching Europe's leading AI researchers?

If so, don't worry! There are still plenty of opportunity to support #EurIPS as a sponsor. Sponsorship packages are available and can be further customized if necessary.

More info at: eurips.cc/become-sponsor/

01.09.2025 08:12 ๐Ÿ‘ 8 ๐Ÿ” 6 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1
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๐Ÿ“ฃ Please share: We invite submissions to the 29th International Conference on Artificial Intelligence and Statistics (#AISTATS 2026) and welcome paper submissions at the intersection of AI, machine learning, statistics, and related areas. [1/3]

12.08.2025 11:46 ๐Ÿ‘ 36 ๐Ÿ” 21 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 2
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Estimating the size of a set using cascading exclusion Let $S$ be a finite set, and $X_1,\ldots,X_n$ an i.i.d. uniform sample from $S$. To estimate the size $|S|$, without further structure, one can wait for repeats and use the birthday problem. This requ...

Estimating a setโ€™s size from uniform (or o/w well-defined) samples is a classical problem, with two well-studied extremes: min structure (birthday problem), max structure (German tank problem). A framework interpolating between them, amongst other things:
arxiv.org/abs/2508.05901

11.08.2025 21:12 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

I am pleased to announce that together with some friends, we are organising a workshop on Non-Reversible MCMC Sampling, taking place at Newcastle University from 8โ€“10 September 2025.

Details on the programme and registration can be found at the workshop website (sites.google.com/view/probai-...).

24.07.2025 11:28 ๐Ÿ‘ 30 ๐Ÿ” 11 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 3
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EurIPS is coming! ๐Ÿ“ฃ Mark your calendar for Dec. 2-7, 2025 in Copenhagen ๐Ÿ“…

EurIPS is a community-organized conference where you can present accepted NeurIPS 2025 papers, endorsed by @neuripsconf.bsky.social and @nordicair.bsky.social and is co-developed by @ellis.eu

eurips.cc

16.07.2025 22:00 ๐Ÿ‘ 143 ๐Ÿ” 70 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 19
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๐Ÿ“ข Present your NeurIPS paper in Europe!

Join EurIPS 2025 + ELLIS UnConference in Copenhagen for in-person talks, posters, workshops and more. Registration opens soon; save the date:

๐Ÿ“… Dec 2โ€“7, 2025
๐Ÿ“ Copenhagen ๐Ÿ‡ฉ๐Ÿ‡ฐ
๐Ÿ”—eurips.cc

#EurIPS
@euripsconf.bsky.socialโ€ฌ

16.07.2025 23:00 ๐Ÿ‘ 61 ๐Ÿ” 17 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 3

Alright, people, let's be honest: GenAI systems are everywhere, and figuring out whether they're any good is a total mess. Should we use them? Where? How? Do they need a total overhaul?

(1/6)

15.06.2025 00:20 ๐Ÿ‘ 33 ๐Ÿ” 11 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Olivier Blanchard, Jean Pisani-Ferry et Gabriel Zucmanย : ยซย Nous partageons le constat quโ€™un impรดt plancher sur les grandes fortunes est le plus efficace face ร  lโ€™inรฉgalitรฉ fiscaleย ยป TRIBUNE. Le dispositif cibleย les centimillionnaires qui mettent en place des schรฉmas dโ€™optimisation pour รฉchapper ร  lโ€™impรดt.ย Il ne fait que mettre en conformitรฉ nos lois fiscales avec le principe dโ€™รฉg...

Pour que les Franรงais acceptent la nรฉcessaire consolidation des finances publiques, il faut que la charge en soit รฉquitablement rรฉpartie. Ma tribune @lemonde avec O. Blanchard et G. Zucman.
www.lemonde.fr/idees/articl...

11.06.2025 05:48 ๐Ÿ‘ 75 ๐Ÿ” 30 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 4
Julyan Arbel presenting.

Julyan Arbel presenting.

Julyan Arbel presenting.

Julyan Arbel presenting.

The first talk of the second day was also Bayesian! @julyanarbel.bsky.social gave a nice overview of Bayesian deep learning.

03.06.2025 08:02 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Judith Rousseau

Judith Rousseau

The entrance of the campus

The entrance of the campus

The Journรฉes de Statistique of the @statfr.bsky.social is one of my favorite conferences! It started with the Le Cam award being given to Judith Rousseau for her work on Bayesian asymptotics. Judith talked about semiparametric Bernstein-von Mises theorems and her new love for the Bayesian bootstrap.

02.06.2025 08:59 ๐Ÿ‘ 6 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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A Tutorial on Discriminative Clustering and Mutual Information To cluster data is to separate samples into distinctive groups that should ideally have some cohesive properties. Today, numerous clustering algorithms exist, and their differences lie essentially in ...

New preprint!

Introducing "A tutorial on discriminative clustering and mutual information"

With @pamattei.bsky.social and Frรฉdรฉric Precioso.

arxiv.org/abs/2505.04484

This preprint covers the history of discriminative clustering with pedagogical intents.

12.05.2025 08:19 ๐Ÿ‘ 3 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

We are organising EWRL in Tรผbingen in September. We are working on the program and we will soon be able to make first announcements. Stay tuned, follow @ewrl18.bsky.social

08.04.2025 14:03 ๐Ÿ‘ 29 ๐Ÿ” 12 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Thanks for coming :)

10.04.2025 12:29 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

and what a great #PhD summer school!

Thanks @jesfrellsen.bsky.social @pamattei.bsky.social and @jmtomczak.bsky.social for organizing it (and having me).

Amazing talks, interactions, location and food ๐Ÿ’™

04.04.2025 15:01 ๐Ÿ‘ 13 ๐Ÿ” 3 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 1
Fred Precioso giving a talk.

Fred Precioso giving a talk.

Aude Sportisse giving a talk.

Aude Sportisse giving a talk.

Benjamin Billot giving a talk.

Benjamin Billot giving a talk.

โ€ฆ folowed by Frรฉdรฉric Precioso, Aude Sportisse, and Benjamin Billot in the afternoon!

03.04.2025 21:18 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Gilles Louppe giving a talk.

Gilles Louppe giving a talk.

Yingzhen Li giving a talk.

Yingzhen Li giving a talk.

Today was the first day of invited talks of GeMSS/Statlearn @gemssai.bsky.social with great lectures by @glouppe.bsky.social and Yingzhen Li in the morningโ€ฆ

03.04.2025 21:18 ๐Ÿ‘ 9 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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And, finally, the VAE lectures ๐Ÿงก by @jesfrellsen.bsky.social

31.03.2025 15:19 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Followed by @jmtomczak.bsky.social on mixtures models and probabilistic circuits!

31.03.2025 09:49 ๐Ÿ‘ 8 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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This review paper by @guillaume-garrigos.com on SGD-related algorithms is a fantastic resource, offering elegant, self-contained, and concise proofs in a single, accessible reference. arxiv.org/pdf/2301.11235

29.01.2025 16:15 ๐Ÿ‘ 189 ๐Ÿ” 39 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Weโ€™ve extended the Statlearn/GeMSS Spring school deadline till February 2! More details at gemss.ai

27.01.2025 17:45 ๐Ÿ‘ 5 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Weโ€™re organizing once again the Gznerative Modeling Summer school this spring on the Cรดte dโ€™Azur, merged for the occasion with SFdSโ€™s Statlearn!
Applications are open!

10.01.2025 15:27 ๐Ÿ‘ 10 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

A happy author discovering the first hard copies

21.12.2024 15:24 ๐Ÿ‘ 96 ๐Ÿ” 16 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 1
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Heading to Vancouver for NeurIPS to present our paper โ€œOn Conditional Diffusion Models for PDE Simulationโ€. I'll be together with Sasha and Cristiana at poster 2500 during Thursdayโ€™s late afternoon session. Looking forward exciting discussions and meeting new people! ๐Ÿฅธ๐Ÿฅธ

neurips.cc/virtual/2024...

09.12.2024 16:47 ๐Ÿ‘ 11 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Jacques Roubaud - Wikipedia

Sad news. Jacques Roubaud, mathematician, poet, member of the OuLiPo, passed away today.

en.wikipedia.org/wiki/Jacques...

05.12.2024 14:02 ๐Ÿ‘ 10 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Anne Gagneux, Sรฉgolรจne Martin, @quentinbertrand.bsky.social Remi Emonet and I wrote a tutorial blog post on flow matching: dl.heeere.com/conditional-... with lots of illustrations and intuition!

We got this idea after their cool work on improving Plug and Play with FM: arxiv.org/abs/2410.02423

27.11.2024 09:00 ๐Ÿ‘ 355 ๐Ÿ” 102 ๐Ÿ’ฌ 12 ๐Ÿ“Œ 11
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๐Ÿ‘ฉโ€๐ŸŽ“๐Ÿ‘จโ€๐ŸŽ“ Internship offers (1st step to PhD program) in my group:
team.inria.fr/soda/job-off...

Topics:
โ—ผ Health AI & causality, accounting for censoring (for people who love health impact)
โ—ผ Foundation models for tabular learning (for people into bigger models)

Come work with us!

27.11.2024 13:44 ๐Ÿ‘ 40 ๐Ÿ” 12 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Jean-Gabriel Ganascia giving his talk

Jean-Gabriel Ganascia giving his talk

Next, @quecalcoatle.bsky.social explains practical paths towards ethics in AI

27.11.2024 13:43 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Serena Villata presenting

Serena Villata presenting

Followed by Serena Villata talking about good (and bad) arguments

27.11.2024 11:11 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0