Alfredo Canziani

@alfcnz.bsky.social

Musician, math lover, cook, dancer, 🏳️‍🌈, and an ass prof of Computer Science at New York University

To compute the movement of the state x(t), we need to temporally integrate its velocity field ẋ(t). 🤓 The control signal steering angle stays at 0, then 0.05π, then linearly to −0.20π. The vehicle moves along circumferences. Finally, a sweep of initial velocity is performed.

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Currently, writing chapter 10, «Planning and control». Physical constrains for the evolution of the state (e.g. pure rotation of the wheels) are encoded through the velocity of the state ẋ = dx(t)/dt, a function of the state x(t) and the control u(t).

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Training of a 2 → 100 → 2 → 5 fully connected ReLU neural net via cross-entropy minimisation. • it starts outputting small embeddings • around epoch 300 learns an identity function • takes 1700 epochs more to unwind the data manifold

I *really* had a blast giving this improvised lecture on a topic requested on the spot without any sleep! 🤪 The audience seemed enjoying the show. 😄 To find more about my educational offer, check out my website! atcold.github.io Follow here and subscribe on YouTube! 😀

khipu.ai@khipu-ai.bsky.social · last yr.

➡️ The lecture ML & DL Foundamentals II with Alfredo Canziani @alfcnz is now starting at #KHIPU2025 Remember you can watch it live at khipu.ai/live

In today's episode, we review the concepts of loss ℒ(𝘄, 𝒟), per-sample loss L(𝘄, x, y), binary cross-entropy cost ℍ(y, ỹ) = y softplus(−s) + (1−y) softplus(s), ỹ = σ(𝘄ᵀ𝗳(x)). Then, we minimised the loss by choosing convenient values for our weight vector 𝘄. @nyucourant.bsky.social

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If you're interested in creative coding or simulations, come read The Nature of Code with us! I'm setting up a chill book club to read the book and share projects starting in January. DM me for info!

The Nature of Code paperback book

I was reading about Conway's Game of Life, and this whole amazing book is available online! The Nature of Code - by Daniel Shiffman Thank you @shiffman.net for making it free for the web! People, please consider buying a copy of the book :) natureofcode.com/cellular-aut...

7. Cellular Automata

In Chapter 5, I defined a complex system as a network of elements with short-range relationships, operating in parallel, that exhibit emergent behavio

natureofcode.com

It takes me weeks to detox from a stressful work mindset and finally sleep in — without waking at dawn, driven by the haste of unfinished tasks. I struggle to turn on my laptop to do any work. When I do restart, the anxiety comes back instantaneously. Is this common? ☹️☹️☹️

Entropy is one of those formulas that many of us learn, swallow whole, and even use regularly without really understanding. (E.g., where does that “log” come from? Are there other possible formulas?) Yet there's an intuitive & almost inevitable way to arrive at this expression.

Me: what’s your poster about? Presenter (P): let me tell you about the theory of constrained optimisation of convex functions. Me: no, what was the goal? P: okay, so the framework of blah and blah has the KKT blah and blah blah blah conditions and… Me: high level, plz.