Sarath Chandar
@apsarathchandar
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Associate Professor @polymtl and @Mila_Quebec; Canada CIFAR AI Chair; Machine Learning Researcher. Pro-bono office hours: https://t.co/tK69DKRf9N?amp=1
Montrรฉal, Quรฉbec
Joined December 2011
Apparently there was already a discussion of this talk here after it was given live. But I missed it. So now will do: I do care about potential AI harms, but disagree with pretty much everything he says here! will elaborate in the response.
COLM Keynote: Nicholas Carlini Are LLMs worth it? https://t.co/p4PkmP8AZ8
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I am recruiting several graduate students (both MSc and PhD level) for Fall 2026 @ChandarLab! The application deadline is December 01. Please apply through the @Mila_Quebec supervision request process here: https://t.co/4UfkKPMRHn. More details about the recruitment process
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Thank you @CP3events @CP3 for the amazing pic from the dunk contest! Had a great time at the camp!!!
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I can't attend #ICCV 2025 in Honolulu, Hawaii but my amazing teammates will be there! Please stop by our poster tomorrow 21 Oct (#438) to learn about TAPNext, a general, ViT-like architecture with SOTA point tracking quality! Links: ๐ website: https://t.co/FILiZsVgQa
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In Fall 2026, I will begin a tenure-track faculty position @JHUCompSci Announcing the SciPhy lab, where we will study the science of physical agents (robots) We are now recruiting our first cohort of PhD students. If this is you, see https://t.co/heSKsCbWz7
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๐ซ Why you should apply to Mila โ Quรฉbec AI Institute Mila is more than a research institute, it truly feels like a home. Being surrounded by kind, humble, and brilliant researchers makes every discussion inspiring and every challenge exciting.
Mila's annual supervision request process is now open to receive MSc and PhD applications for Fall 2026 admission! For more information, visit https://t.co/r01eLcY1P4
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Our kids have been riding the same bus for over 50 years! Totally unacceptable! It's time for an update! Here are some remodel ideas. Anything would be better than what it currently is! Let's show the next generation some love and get them a nicer and safer new ride! Perhaps some
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@Mila_Quebec's annual supervision request process is now open to receive MSc and PhD applications for Fall 2026 admission! We have open positions for PhD students to work on data management systems and software systems more broadly! Reach out if interested.
Mila's annual supervision request process is now open to receive MSc and PhD applications for Fall 2026 admission! For more information, visit https://t.co/r01eLcY1P4
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Apply to join one of the top AI research ๐ค institutes in the world in the wonderful city of Montrรฉal! I will be recruiting 1-2 students this year. Just mention my name in your application.
Mila's annual supervision request process is now open to receive MSc and PhD applications for Fall 2026 admission! For more information, visit https://t.co/r01eLcY1P4
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Mila is the only academic institute in the world with 1500+ AI researchers in one place! Want to join this greatest concentration of AI talent? Apply now!
Mila's annual supervision request process is now open to receive MSc and PhD applications for Fall 2026 admission! For more information, visit https://t.co/r01eLcY1P4
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Markovian Thinking by @Mila_Quebec & @Microsoft lets LLMs reason with a fixed-size state โ compute stays the same no matter how long the reasoning chain gets. This makes RL linear-cost and memory-constant. The teamโs Delethink RL setup trains models to be Markovian Thinkers,
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Thanks for sharing, @TheTuringPost We propose Markovian Thinking as a new paradigm, and Delethink as a simple, concrete instantiation enabling constant-memory, linear-compute reasoning that keeps improving beyond training limits.
Markovian Thinking by @Mila_Quebec & @Microsoft lets LLMs reason with a fixed-size state โ compute stays the same no matter how long the reasoning chain gets. This makes RL linear-cost and memory-constant. The teamโs Delethink RL setup trains models to be Markovian Thinkers,
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Nice paper! Make the context for reasoning local and train an RL model with such truncation. This way the model "markovinifies" and makes use of its context efficiently!
Introducing linear scaling of reasoning: ๐๐ก๐ ๐๐๐ซ๐ค๐จ๐ฏ๐ข๐๐ง ๐๐ก๐ข๐ง๐ค๐๐ซ Reformulate RL so thinking scales ๐(๐ง) ๐๐จ๐ฆ๐ฉ๐ฎ๐ญ๐, not O(n^2), with O(1) ๐ฆ๐๐ฆ๐จ๐ซ๐ฒ, architecture-agnostic. Train R1-1.5B into a markovian thinker with 96K thought budget, ~2X accuracy ๐งต
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Itโs clear next-gen reasoning LLMs will run for millions of tokens. RL at 1M needs ~100ร compute than 128K. Our Markovian Thinking keeps compute scaling linear instead. Check out Miladโs thread; some of my perspectives below:
Introducing linear scaling of reasoning: ๐๐ก๐ ๐๐๐ซ๐ค๐จ๐ฏ๐ข๐๐ง ๐๐ก๐ข๐ง๐ค๐๐ซ Reformulate RL so thinking scales ๐(๐ง) ๐๐จ๐ฆ๐ฉ๐ฎ๐ญ๐, not O(n^2), with O(1) ๐ฆ๐๐ฆ๐จ๐ซ๐ฒ, architecture-agnostic. Train R1-1.5B into a markovian thinker with 96K thought budget, ~2X accuracy ๐งต
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Long reasoning without the quadratic tax: The Markovian Thinker makes LLMs reason in chunks with a bounded state โ linear compute, constant memory and it keeps scaling beyond the training limit. 1/6
Introducing linear scaling of reasoning: ๐๐ก๐ ๐๐๐ซ๐ค๐จ๐ฏ๐ข๐๐ง ๐๐ก๐ข๐ง๐ค๐๐ซ Reformulate RL so thinking scales ๐(๐ง) ๐๐จ๐ฆ๐ฉ๐ฎ๐ญ๐, not O(n^2), with O(1) ๐ฆ๐๐ฆ๐จ๐ซ๐ฒ, architecture-agnostic. Train R1-1.5B into a markovian thinker with 96K thought budget, ~2X accuracy ๐งต
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GOD'S UNLIKELY WARRIORS - TAKE YOUR POST One of the great truths of Scripture is that God consistently chooses the least expected people to accomplish His greatest purposes. He used Moses, who doubted himself; David, who was overlooked; and even Cyrus, a pagan king, to restore
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Introducing linear scaling of reasoning: ๐๐ก๐ ๐๐๐ซ๐ค๐จ๐ฏ๐ข๐๐ง ๐๐ก๐ข๐ง๐ค๐๐ซ Reformulate RL so thinking scales ๐(๐ง) ๐๐จ๐ฆ๐ฉ๐ฎ๐ญ๐, not O(n^2), with O(1) ๐ฆ๐๐ฆ๐จ๐ซ๐ฒ, architecture-agnostic. Train R1-1.5B into a markovian thinker with 96K thought budget, ~2X accuracy ๐งต
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I moved out of my home in 2008 and I still call my mom every day! If you read this and you donโt call your parents everyday, call them NOW! The love parents have for their kids is priceless! I realized it only after I became a father myself!
Story time: After I moved out of my home in 2014 to live in Japan, initially I used to call my parents daily. But as I became more "internationalized" I started calling my parents less and less. I used to tell my mom "I have nothing to talk about so we don't need to call daily".
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Iโve been working with Mathieu for more than 1.5 years and I can vouch that heโs an excellent researcher and a great mentor. Iโm also attending @COLM_conf this time, and would love to chat with anyone about LLM post-training, reinforcement learning, and AI for Science!
If you are attending @COLM_conf and looking to hire a research scientist, I highly recommend you talk to my postdoc, Mathieu Reymond, who is in the job market and at the conference! Mathieu is an expert in mult-objective RL, multi-agent RL, RL for scientific discovery, and RL for
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If you are attending @COLM_conf and looking to hire a research scientist, I highly recommend you talk to my postdoc, Mathieu Reymond, who is in the job market and at the conference! Mathieu is an expert in mult-objective RL, multi-agent RL, RL for scientific discovery, and RL for
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@karenvaites Honestly, my takeaway from this isn't that tracking is bad, it's that teachers can't be trusted to do it right. Which, functionally, might be the same thing.
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โจ What if we could tune Frontier LLM agents without touching any weights? Meet JEF-Hinter, an agent capable of analyzing multiple offline trajectories to extract auditable and timely hints๐ก In our new paper ๐ , we show significant performance gains on downstream tasks โก with
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I am not at @COLM_conf, but most of my students are! If you are attending CoLM and are interested in PhD and postdoc positions @ChandarLab, please talk to my students and postdocs who are at the conference this week! We have 2 open postdoc positions and multiple PhD positions!
chandar-lab.github.io
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Looking forward to talking about explainable AI at @Mila_Quebecโs first Community of Practice event! Registrations open now!
We are pleased to invite you to the very first gathering of the Mila Community of Practice on October 23. Prof. @apsarathchandar, Maryam Molamohammadi from Milaโs AI Studios, and an industry expert will share their insights and discuss the challenges surrounding explainable AI.
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