Matteo Fischetti

#NPnerd fishing in the #ComputationalSea

[Matteo Fischetti @MFischetti]

#backpropagation - for poeple suffering from derivative allergy (hopefully useful for teaching @jeremyphoward)

[Stefano Ermon @StefanoErmon]

1/4 Today, we’re releasing Mercury 3. Mercury 3 is by far our most powerful model and the most intelligent diffusion LLM ever released. It outperforms GPT-6 Luna and Haiku 5.5 on quality while running at 1000+ tok/sec.

[Stefano Ermon @StefanoErmon]

Excited to share that Mercury 2 is one of @TIME's Best Inventions of 2026.

Not long ago, diffusion LLMs were just a research idea. Now Mercury powers products people use every day.

Proud of the @_inception_ai team. Something bigger coming next week 👇🧵

[Matteo Fischetti @MFischetti]

A short video about our new EndoWake model for wind farm layout optimization #orms joint work with @MartiFischetti

[Matteo Fischetti @MFischetti]

Can wind wakes be described by a simple linear convolution?

Presenting *EndoWake*, aka Wind Modelling by Linear Programming; joint work with @MartiFischetti

1. Theory and MILP model:

https://t.co/n5SXn4SUCh

2. Application on GPUs:

https://t.co/pcgDJm3DDU

[Matteo Fischetti @MFischetti]

to my soccer friends @sebceria @A_Sassano just a #soccer_conjecture

[Matteo Fischetti @MFischetti]

With #opus5.5 @ClaudeDevs

[Matteo Fischetti @MFischetti]

A digital twin of Fermat in 1637: reconstructing the marvellous proof and locating where it fails

https://t.co/TUm8b2HWge

[Matteo Fischetti @MFischetti]

For all FP-riends #orms:
Feasibility Pump + objective cutoff as a black box: what does it lose? On MIPLIB 2017 inside SCIP, a simple recovery beats SCIP's pump on 116 of 176 instances, loses on 9 (post hoc).
Code and data: https://t.co/ONulOLUe3w
paper: https://t.co/CQPvOnic1E

[Yoshua Bengio @Yoshua_Bengio]

Over the past few days, I've taken the time to summarize my thoughts on the recent incidents involving agents’ misaligned behavior. We don't know with certainty what comes next, but we know where these issues originate, and this can help us plan the path forward.

Please feel free to ask your questions in the replies, and I’ll try to answer some of them in the coming weeks.

https://t.co/bvncjT0y0h

[Alice Raffaele @AliceRaffaele1]

This could be the most significant problem we are called to address together, by contributing in whatever way each of us can, while upholding integrity and ethics as hard, non-negotiable constraints.

Full declaration and how to endorse it: https://t.co/24lpDck14w

[SEIO @SEIO_ES]

🏅 Las Medallas SEIO 2025 reconocen a Antonio Cuevas González y a Dolores Romero Morales por sus destacadas trayectorias y contribuciones a la Estadística y la Investigación Operativa. Hoy, ambos medallistas ofrecerán sus conferencias en la #SEIO2026.
¡Enhorabuena! 👏

[Matteo Fischetti @MFischetti]

I found it helpful to have Claude/chatGPT use colored markdown in the chat to highlight positive, negative, and neutral outcomes.

Legenda: ✅ buono · ❌ negativo · ⚠️ da verificare o numero fragile · 🔵 in corso

[Julian Schrittwieser @Mononofu]

Very excited that we are bringing cheaper / free Claude to more scientists!

If you are using Claude for scientific research, I'd love to hear your feedback, what works well and what doesn't - accelerating science is the main reason I care about AI!

[Matteo Fischetti @MFischetti]

@sara_drag @jeremyphoward Fewer iterations -> fewer validations -> worse generalization

[Juan Jose Salazar @jjsalaza]

Research Handbook on Transport Modeling https://t.co/mqBnWI9DLh

[BCBL @bcbl_]

🗣️We have invited Giovanni Di Liberto (@diliberg), from @tcddublin to speak us about investigating auditory #cognition with natural speech and music.

We are eager to learn more about his work!

Discover more about it here👇

https://t.co/q52OcNLD8D

[Subject to @Subjectto_]

Subject to: Katya Scheinberg (Georgia Tech), https://t.co/ciLEdxOChR, #orms #optimization #WomenInOR @GeorgiaTech @GeorgiaTechISyE @math_opt @INFORMS @siam @TheSIAMNews @INFORMS_WORMS

[Yoshua Bengio @Yoshua_Bengio]

I sat down with @JonHernandezIA in Madrid to discuss the growing risks and impacts of AI and the urgent need to improve our social, political, and technical safeguards.
Thanks for an excellent conversation!