Francois Chaubard

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744 appearances 1 recordings 1 series first heard Jul 2026 last heard 17 Jul

Francois Chaubard’s voice in public audio — every appearance, attributed to the second.

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Recordings per month over the last 12 months — 1 in all, peaking in Jul 2026 with 1.

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Y Combinator Startup Podcast · World Models, Explained · 17 Jul 2026 podcast

And now I have my transition function.

Now, how do I get to a policy?

And I'm going to apply something called model predictive control or real-time model predictive control, which is like the way that SpaceX lands the rocket on some platform in the ocean.

And what you're going to do is you're going to set up your loss function.

You're going to minimize sum over all t. You have u t to infinity.

And I'm going to minimize my p star minus p t plus v star minus v t

And usually you add this little Lambda UT, which is like how much energy you're exerting.

And you can't,

have infinite thrust.

So you typically will have to say UTU max thrust that can be achieved.

And so this is easily solvable with convex optimization.

And so this is convex.

This is convex.

The sum of convex functions is convex.

This is a convex constraint.

And so I...

DCP discipline, comics programming means that I can put this into CVX PI, and it will just give me out my policy, which will be the solution will be the optimal UT plus one all the way to infinity.

Exactly.

You'll run your log barrier, interior point, whatever, to some solver on this.

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