Ph.D. student at MIT EECS, working with @phillip_isola and @vincesitzmann. Previous RA at @Oxford_VGG.

Joined August 2022
Xingjian Bai retweeted
Replying to @SimulatedAnneal
I love the research direction! You might be interested in arxiv.org/pdf/2405.16195. It tunes the HPs, architecture, and optimizer by itself, during training. @AlexDGoldie also worked in that direction with learned optimizers arxiv.org/pdf/2407.07082 The 2 focus on autoRL.
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Xingjian Bai retweeted
Replying to @zsakib_
Indeed, it slows down training a bit! Section 4 of the blog discusses this, and I’ve attached some additional equal-time comparison plots. You’re right that, since I make agents react infrequently in my experiments, the overhead per run is manageable: at most 2 hours and $6–$15 in tokens. In general, the relative overhead is lower for larger-scale training runs.
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Xingjian Bai retweeted
"Video models are world simulators." Ok — can they predict a ball bouncing off another ball, off another ball? 🤨 We find standard video diffusion breaks down as the chain of dependent events lengthens — and more compute isn't the fix. Meet the seriality gap. 🧵 1/n
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