Sign in

David Heurtel-Depeiges

@heurteldepeiges.bsky.social
14 followers 546 following 5 posts

1st Year PhD Student @ Mila under the supervision of Sarath Chandar

PostsRepliesMedia
Reposted by David Heurtel-Depeiges
Chandar Research Lab @chandar-lab.bsky.social · 10/03/2026
This week, as we celebrated International Women’s Right Day for the 115th time on Sunday, the Chandar Lab wanted to pay tribute to all the amazing women doing research👩‍🎓, and to highlight the cutting-edge work they do at our lab everyday...🧵
122
Reposted by David Heurtel-Depeiges
Chandar Research Lab @chandar-lab.bsky.social · 10/02/2026
📝 openreview.net/forum?id=5bg... Joint work of Mehran Shakerinava, Behnoush Khavari, Siamak Ravanbakhsh and @sarath-chandar.bsky.social @mila-quebec.bsky.social .
openreview.net
The Expressive Limits of Diagonal SSMs for State-Tracking
State-Space Models (SSMs) have recently been shown to achieve strong empirical performance on a variety of long-range sequence modeling tasks while remaining efficient and highly-parallelizable....
021
Reposted by David Heurtel-Depeiges
Chandar Research Lab @chandar-lab.bsky.social · 10/02/2026
New work, just accepted @ICLR: "The Expressive Limits of Diagonal SSMs for State-Tracking" We give a complete characterization of what diagonal SSMs can and cannot compute on state-tracking tasks and the answer is deeply connected to group theory. 🧵👇
122
Reposted by David Heurtel-Depeiges
Chandar Research Lab @chandar-lab.bsky.social · 03/02/2026
NeoBERT: A Next-Generation BERT (TMLR Journal-to-Conference Track) We modernized BERT (RoPE, SwiGLU, 4k context). At just 250M params, it outperforms RoBERTa and ModernBERT on the MTEB benchmark. 📄 arxiv.org/abs/2502.19587
arxiv.org
NeoBERT: A Next-Generation BERT
Recent innovations in architecture, pre-training, and fine-tuning have led to the remarkable in-context learning and reasoning abilities of large auto-regressive language models such as LLaMA and Deep...
031
Reposted by David Heurtel-Depeiges
Chandar Research Lab @chandar-lab.bsky.social · 03/02/2026
The Markovian Thinker: Architecture-Agnostic Linear Scaling of Reasoning We achieve linear-complexity reasoning. Our "Delethink" decouples thought length from context, matching LongCoT performance with ≈25% of the compute. 📄 arxiv.org/abs/2510.06557
arxiv.org
The Markovian Thinker: Architecture-Agnostic Linear Scaling of Reasoning
Reinforcement learning (RL) has recently become a strong recipe for training reasoning LLMs that produce long chains of thought (LongCoT). Yet the standard RL "thinking environment", where the state i...
111
Reposted by David Heurtel-Depeiges
Chandar Research Lab @chandar-lab.bsky.social · 03/02/2026
The Expressive Limits of Diagonal SSMs for State-Tracking We prove a tight bound: Diagonal SSMs are theoretically incapable of tracking non-Abelian groups. A critical look at where efficient models fail vs. where they succeed. 📄 openreview.net/forum?id=5bg...
openreview.net
The Expressive Limits of Diagonal SSMs for State-Tracking
State-Space Models (SSMs) have recently been shown to achieve strong empirical performance on a variety of long-range sequence modeling tasks while remaining efficient and highly-parallelizable....
111
Reposted by David Heurtel-Depeiges
Chandar Research Lab @chandar-lab.bsky.social · 03/02/2026
Excited to share that we have 3 papers accepted at #ICLR2026! 🇧🇷 Our work this year focuses on efficiency and expressivity: deriving theoretical limits for SSMs, achieving linear scaling for reasoning, and modernizing encoder architectures. A summary of our work 👇 🧵
121
Reposted by David Heurtel-Depeiges
Sarath Chandar @sarath-chandar.bsky.social · 03/10/2025
At Chandar Lab, we are happy to announce the third edition of our assistance program to provide feedback for members of communities underrepresented in AI who want to apply to high-profile graduate programs. Want feedback? Details: chandar-lab.github.io/grad_app/. Deadline: Nov 01!
011
David Heurtel-Depeiges @heurteldepeiges.bsky.social · 08/09/2025
Have a look at NovoMolGen implementation on our lab's HF page! Easy to work with and generate new molecules in no time.
000
Reposted by David Heurtel-Depeiges
Sarath Chandar @sarath-chandar.bsky.social · 08/09/2025
We just made NovoMolGen easy to play with: Transformers-native checkpoints on the Hub and small notebooks that let you load, sample, and fine-tune in minutes. The few lines of code that load the model, plug in a reward, run a short RL finetune, and plot the curve.
132
David Heurtel-Depeiges @heurteldepeiges.bsky.social · 04/04/2025
Collaborative Multi Agent Reinforcement Learning is key for AI in the future. Check out R3D2, a generalist agent working on text-based Hanabi, accepted at ICLR 2025. Website: chandar-lab.github.io/R3D2-A-Gener...
chandar-lab.github.io
022
Reposted by David Heurtel-Depeiges
Sarath Chandar @sarath-chandar.bsky.social · 05/03/2025
I am excited to share that our BindGPT paper won the best poster award at #AAAI2025! Congratulations to the team! Work led by @artemzholus.bsky.social!
094
Reposted by David Heurtel-Depeiges
Sarath Chandar @sarath-chandar.bsky.social · 28/02/2025
The best part? We are open-sourcing everything, including the intermediary model checkpoints. The main model is already on HuggingFace, be sure to check it out! (6/n) Model: huggingface.co/chandar-lab/... Paper: arxiv.org/abs/2502.19587 Code and checkpoints to be released soon!
huggingface.co
chandar-lab/NeoBERT · Hugging Face
We’re on a journey to advance and democratize artificial intelligence through open source and open science.
171
David Heurtel-Depeiges @heurteldepeiges.bsky.social · 28/02/2025
NeoBERT is very strong compared to all baselines, is fully open source and open weights (including intermediary checkpoints)...and it has higher tokens/s throughput. Give it a try and substitute your favorite encoder with this new model!
000
David Heurtel-Depeiges @heurteldepeiges.bsky.social · 28/02/2025
Great work by great colleagues! Have a look at the paper.
000