El Mahdi El Mhamdi

@elmahdi
4 Followers
31 Following
6 Posts

Physicist, asst. professor of mathematics and data science at the École Polytechnique. AI/ML security researcher.

Author of "Le Fabuleux Chantier" (EDP Sciences 2019), inventor of algorithms for robust distributed learning such as Krum and Bulyan.

Websitehttps://elmahdielmhamdi.com
Scholarhttps://scholar.google.com/citations?user=kNA-WLQAAAAJ&hl

Things that do not and will not exist:

- a perpetual motion machine.
- a computer solving the halting problem.
- an AI with a trillion parameters, trained on users' data, that preserves privacy and is robust to misinformation and data manipulation.

Have a good start of the week.

On the large AI models, this preprint synthesises what we know so far https://arxiv.org/abs/2209.15259

In short: it is mathematically impossible to have AIs combining the following properties:

1) High number of parameters
2) Robustness to poisoning (e.g. fake data)
3) Privacy-preserving

On the Impossible Safety of Large AI Models

Large AI Models (LAIMs), of which large language models are the most prominent recent example, showcase some impressive performance. However they have been empirically found to pose serious security issues. This paper systematizes our knowledge about the fundamental impossibility of building arbitrarily accurate and secure machine learning models. More precisely, we identify key challenging features of many of today's machine learning settings. Namely, high accuracy seems to require memorizing large training datasets, which are often user-generated and highly heterogeneous, with both sensitive information and fake users. We then survey statistical lower bounds that, we argue, constitute a compelling case against the possibility of designing high-accuracy LAIMs with strong security guarantees.

arXiv.org

مبارك العواشر لگاع المغاربة المنفيين فالخارج و لگاع مغاربة الدّاخل اللي غايفطرو من فلوس الحلال و اللي عايشين الغربة فبلادهم، يعنى گاع المغاربة ما عدى العائلة العلوية-القرعاوية و ديك تقريبا عشرالاف عائلة اللّي مستافذة معاهم من انعدام الدولة و الانقلاب المتجدّد على المؤسسات و حالّة الباب للاستعمار الجديد ديال المغرب على يد التحالف الإماراتي.

و الله يجيب للمغرب الاستقرار، و الاستقلال، و الدولة، و الجمهورية.

حتى حاجة ما كاتعوّض الوالدين الحقيقين و لكن كان هذا أقرب ما قرّبت لواليديا فهاد الربع سنين.

Nothing replaces seeing your parents, but this was the closest I've ever been to that: meeting @Free_Omar_Radi's parents as they represented him for the @RSF_inter award for independence.

Je ne parle pas aux IA, ça les instruit.

Ce fut ma réponse à un collègue qui me demandait si j'ai essayé #ChatGPT.

Très sérieusement, les grands modèles de language nous emmènent vers un cataclysme de cybersécurité et de violation de vie privé pour lequel personne n'est préparé.

Sur ce sujet, cet élu a plus de lucidité que beaucoup de chercheurs du domaine…

Cette remarque vaut aussi pour les logiciels de traduction, clients mails, messageries "privées" de réseaux sociaux etc.