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Qianzhong Chen
144 posts
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Qianzhong Chen
@QianzhongChen
PhD student researching on robot learning @Stanford with @MacSchwager
Palo Alto, CA
qianzhong-chen.github.io
Joined February 2016
403
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  • Pinned
    user avatar
    Qianzhong Chen
    @QianzhongChen
    Jun 23
    Introduce SARM2 ๐Ÿค–a multi-task stage-aware reward model that empowers a self-improving loop: ๐Ÿงบ Folding Shorts 58% โ†’ 100% ๐Ÿงฝ Cleaning Whiteboard 50% โ†’ 90% Paper + project page below ๐Ÿ‘‡ (1/n)
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    Qianzhong Chen
    @QianzhongChen
    Oct 3, 2025
    ๐Ÿš€ Introducing SARM: Stage-Aware Reward Modeling for Long-Horizon Robot Manipulation Robots struggle with tasks like folding a crumpled T-shirtโ€”long, contact-rich, and hard to label. We propose a scalable reward modeling framework to fix that. 1/n
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    Qianzhong Chen
    @QianzhongChen
    Nov 5, 2025
    Start learning LLM papers and all the pre-training post-training tricks, afraid of that one day all robotics researchers can do is data cleaning and tuning rollouts ๐Ÿคฃ๐Ÿคฃ
    user avatar
    Generalist
    @GeneralistAI
    Nov 4, 2025
    Introducing GEN-0, our latest 10B+ foundation model for robots โฑ๏ธ built on Harmonic Reasoning, new architecture that can think & act seamlessly ๐Ÿ“ˆ strong scaling laws: more pretraining & model size = better ๐ŸŒ unprecedented corpus of 270,000+ hrs of dexterous data Read more ๐Ÿ‘‡
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    Qianzhong Chen
    @QianzhongChen
    Oct 3, 2025
    Replying to @QianzhongChen @MacSchwager and 3 others
    @JasonMa2020's previous reward model works (VIP, LIV etc.) as well as @DynaRobotics 24-hour folding towel blog were definately inspirations to SARM. PLease checkout Dyna's new folding T-shirt demo at #CoRL2025 x.com/JasonMa2020/stโ€ฆ 6/n
    user avatar
    Jason Ma
    @JasonMa2020
    Sep 23, 2025
    We just did Worldโ€™s first on-stage autonomous demo of long-horizon dexterous VLA ๐Ÿšจ No training. No setup. Performance out of the box. Live demo is hard and unpredictable, but we felt great about our modelโ€™s generalization, and it went pretty well! ๐Ÿ’ฏ Zero-shot. 100% success.
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    Qianzhong Chen
    @QianzhongChen
    Oct 10, 2025
    Great work for making fair robotics policy benchmarking!
    user avatar
    Yiting Chen
    @YitingChen07
    Oct 8, 2025
    โ€œYou canโ€™t make progress until you are able to measure it. Robotics still doesnโ€™t have such a rallying call. No one agrees on anything.โ€ I ๐Ÿ’ฏ agree with the recent post from @DrJimFan. To break this impasse, we are excited to announce ManipulationNet (manipulation-net.org), a
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    Qianzhong Chen
    @QianzhongChen
    Oct 17, 2025
    Incredible results! I donโ€™t feel like I can doing those tasks for 2 hours without failure. Real world RL, though hard, will be the path leading to super human reliability VLA!
    user avatar
    Kun Lei
    @kunlei15
    Oct 16, 2025
    Introducing RL-100: Performant Robotic Manipulation with Real-World Reinforcement Learning. lei-kun.github.io/RL-100/ 7 real robot tasks, 900/900 successes. Up to 250 consecutive trials in one task, running 2 hours nonstop without failure. High success rate against physical
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    Qianzhong Chen
    @QianzhongChen
    Oct 3, 2025
    Replying to @QianzhongChen
    ๐Ÿง  SARM = Stage-aware reward model Instead of labeling every frame manually, we leverage language annotations to learn stage & progress. โ†’ Robust to noisy demos โ†’ Generalizes to policy rollouts โ†’ Enables semantically meaningful progress 2/n
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    Qianzhong Chen
    @QianzhongChen
    Oct 3, 2025
    Replying to @QianzhongChen
    Huge thanks to my amazing co-authors: @justinyu_ucb (uynitsuj.github.io/about/) @MacSchwager @pabbeel @YideShentu @philippswu ๐Ÿ“–Read the full paper: arxiv.org/abs/2509.25358 ๐Ÿ“ท Project website: qianzhong-chen.github.io/sarm.github.io/ #robotics #AI #imitationlearning #SARM 5/n
    uynitsuj.github.io
    About | Justin Yu
    Personal Blog + Website.
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    Qianzhong Chen
    @QianzhongChen
    Oct 3, 2025
    Replying to @QianzhongChen
    ๐Ÿ“ˆ RA-BC: Reward-Aligned Behavior Cloning Using our learned reward model, we filter & reweight diverse demos to train better policies. ๐Ÿ’ฅ 83% success (flattened) ๐Ÿ’ฅ 67% success (crumpled) Compared to BCโ€™s 8% / 0% using the same data. Quality > quantity. 4/n
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    Qianzhong Chen
    @QianzhongChen
    Nov 19, 2025
    So excited to see that simple but elegant ACT structure has potential to scale up! Congrats @sundayrobotics team!
    user avatar
    Tony Zhao
    Sunday
    @tonyzzhao
    Nov 19, 2025
    Today, we present a step-change in robotic AI @sundayrobotics. Introducing ACT-1: A frontier robot foundation model trained on zero robot data. - Ultra long-horizon tasks - Zero-shot generalization - Advanced dexterity ๐Ÿงต->
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    Qianzhong Chen
    @QianzhongChen
    Oct 3, 2025
    Replying to @QianzhongChen
    ๐Ÿ” Robust to OOD + noisy policy rollouts SARM isnโ€™t just for clean human demos. It accurately estimates progress even on noisy, OOD policy rollouts. ๐Ÿ‘‡ a demo where SARM detects recession and not cheated by โ€œfake finishโ€. 3/n
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    Qianzhong Chen
    @QianzhongChen
    Oct 21, 2025
    Though I canโ€™t attend #IROS2025 due to visa issues, Iโ€™m thrilled two of my papers will be presented! 1๏ธโƒฃ GRaD-Nav: drone visuo-motor RL with 3DGS (Wed Oct 22, 10:30, Rm 311A) 2๏ธโƒฃ GRFM-Net: autotuning bipedal MPC (Thu Oct 23, 16:40, Rm 101) #RobotLearning #ReinforcementLearning
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    Qianzhong Chen
    @QianzhongChen
    Oct 9, 2025
    Very cool project!
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    Harsh Gupta
    @hgupt3
    Oct 8, 2025
    โœˆ๏ธ๐Ÿค– What if an embodiment-agnostic visuomotor policy could adapt to diverse robot embodiments at inference with no fine-tuning? Introducing UMI-on-Air, a framework that brings embodiment-aware guidance to diffusion policies for precise, contact-rich aerial manipulation.
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    Qianzhong Chen
    @QianzhongChen
    Nov 18, 2025
    ๐Ÿ˜๐Ÿ˜๐Ÿ˜
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    Physical Intelligence
    @physical_int
    Nov 18, 2025
    Our model can now learn from its own experience with RL! Our new ฯ€*0.6 model can more than double throughput over a base model trained without RL, and can perform real-world tasks: making espresso drinks, folding diverse laundry, and assembling boxes. More in the thread below.
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