Equation 1 · Part 3 · How Robotics and Embodied AI Actually Work
Symbol s_t
What this part means
is one of the signed contributions combined to compute the quantity on the left.
Its job in the formula
is one of the signed contributions combined to compute the quantity on the left.
Full expression→Symbol s_t→Article meaning
The passage around this formula
Dreamer-style world models learn a compact latent-dynamics model — a recurrent state-space model that predicts both a stochastic and a deterministic component of future latent state — and then train a policy by backpropagating through imagined rollouts inside that latent space, rather than through real or simulated environment steps directly [ 8 ] . DayDreamer took that specific mechanism, previously demonstrated mostly in video-game and simulated benchmarks, and applied it to physical robots learning online, without a simulator and without human demonstrations, reporting that four different physical robots (a quadruped and several manipulator arms) learned locomotion and manipulation skills…
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
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Sources cited in the surrounding passage
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