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Lars Ankile

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@larsankile

ML for robotics.
Palo Alto, CA ankile.com Joined December 2012
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Lars Ankile Verified account @larsankile
I've been thinking a lot about making robot learning scalable. To me, that means learning on the job, and using the human help still needed efficiently.

In Mulligan ⛳️, we focus each data-collection round on the initial states where the robot fails. This happens in deployment, with the robot doing the task and a person stepping in when needed.

On 3 real tasks and 2,550 blind evals, it improves on uniform collection at the same budget.
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Lars Ankile Verified account @larsankile
@sama the minis in the chatgpt app is an abomination, if having them at all wasn't bad enough, having them on by default is straight up insulting

and the fact that the keyboard shortcut is alt+space and cannot be turned off in the app just makes the whole thing kind of funny
Lars Ankile Verified account @larsankile
finally the llm people are catching on to what we robot people have known for years

jk, really cool work from the great @wen_kaiyue and @LukeBailey181 💅
Kaiyue Wen Verified account @wen_kaiyue Oct 2
Do you really need to finish every rollout in RL for LLM? Not if you make your critic better—and trust it!

We propose Actor-Critic with Action Chunking (AC2): use a learned critic to score chunks of tokens => only need partial rollouts ⇒ train faster than GRPO!
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