nowfound

Life & fun · October 6, 2025

Stochastic Gradient in Hilbert Spaces

I wrote a free, proof-complete monograph on stochastic gradient methods in infinite-dimensional Hilbert spaces. It starts from the functional-analysis foundations (Riesz, Radon–Nikodym), gives five equivalent definitions of stochastic gradients, proves existence/uniqueness of the dynamics, connects the continuum limit to gradient-flow PDEs, and derives explicit convergence rates under multiple assumption sets (convex, strongly convex, PL/KL, heavy-tailed noise, proximal). It also covers special cases (Gaussian/RKHS), extends to Hilbert manifolds/Banach spaces, analyzes…

Stochastic Gradient in Hilbert Spaces launched on October 6, 2025 with 9 votes, #1,657 of 8,178 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.

Visit zenodo.org ↗Alternativestop 20% of October 2025

What it does

We develop an end-to-end, fully rigorous theory of stochastic gradient methods in infinite-dimensional Hilbert spaces. After assembling the minimal functional-analytic and measure-theoretic toolkit (including the key inequalities used throughout), we show that the many ways practitioners define a “stochastic gradient” in function spaces in fact agree under mild assumptions. On this foundation we e

You are using an outdated browser. Please upgrade your browser to improve your experience. Zenodo is currently experiencing slowness and intermittent outages due to heavy automated traffic from bots and AI crawlers. We are aware of the problem, and our team is focused on stabilizing the service. Thank you for your patience. We develop an end-to-end, fully rigorous theory of stochastic gradient methods in infinite-dimensional Hilbert spaces. After assembling the minimal functional-analytic and measure-theoretic toolkit (including the key inequalities used throughout), we show that the many ways practitioners define a “stochastic gradient” in function spaces in fact agree under…from zenodo.org

In the maker’s words, at launch

I wrote a free, proof-complete monograph on stochastic gradient methods in infinite-dimensional Hilbert spaces. It starts from the functional-analysis foundations (Riesz, Radon–Nikodym), gives five equivalent definitions of stochastic gradients, proves existence/uniqueness of the dynamics, connects the continuum…

Does a similar job

all alternatives →
  • Boldly go where Gradient Descent has never gone before with DiscoGrad2024 · github.com · ▲232

    Trying to do gradient descent using automatic differentiation over branchy programs? Or to combine them with neural networks for end-to-end training? Then this might be interesting to you. We develped DiscoGrad, a tool for automatic differentiation through C++ programs involving input-dependent control flow (e.g., "if (f(x) < c) { ... }", differentiating wrt. x) and randomness. Our initial motivation was to enable the use of gradient descent with simulations, which often rely heavily on such discrete branching. The latter makes plain autodiff mostly useless, since it can only account for the…

  • Gradienta2019 · gradienta.io · ▲292

    Open-source multi-layered CSS gradients with JPG downloads

  • Automated smooth Nth order derivatives of noisy data2024 · github.com · ▲146

    This little project came about because I kept running into the same problem: cleanly differentiating sensor data before doing analysis. There are a ton of ways to solve this problem, I've always personally been a fan of using kalman filters for the job as its easy to get the double whammy of resampling&#x2F;upsampling to a fixed consistent rate and also smoothing&#x2F;outlier rejection. I wrote a little numpy only bayesian filtering&#x2F;smoothing library recently (https:&#x2F;&#x2F;github.com&#x2F;hugohadfield&#x2F;bayesfilter&#x2F;) so this felt like a fun and very useful first thing to…

  • A weekend replication of STOKE, a stochastic superoptimiser2019 · github.com · ▲58

    Haskell re-implementation of STOKE, the stochastic superoptimizer - blaze/notebooks/tutorial.ipynb at master · bollu/blaze

  • Stochastic – JavaScript library for simulating stochastic processes2014 · github.com · ▲55

    Simulation of common stochastic processes with native JavaScript - NathanEpstein/stochastic

  • A radically more scalable alternative to Bayesian Optimization2018 · github.com · ▲96

    Experimental Global Optimization Algorithm. Contribute to chrisstroemel/Simple development by creating an account on GitHub.

More life & fun this month

the category →

Source: Show HN post ↗ · launch text quoted in part

Launched alongside, October 2025

the whole month →
  • Our first coding model and new interface for agents

    AI · Oct 2025 · cursor.com

  • Flask▲806

    Notion + Loom, for video collaboration.

    AI · 2025 · flask.do

  • I went down the rabbit hole on a side project and ended up building this: Strange Attractors(https:&#x2F;&#x2F;blog.shashanktomar.com&#x2F;posts&#x2F;strange-attractors). It’s built with three.js. Working on it reminded me of the little "maths for fun" exercises I used to do while learning programming in early days. Just trying things out, getting fascinated and geeky, and being surprised by the results. I spent way too much time on this, but it was extreme fun. My favorite part: someone pointed me to the Simone Attractor on Threads. It is a 2D attractor and I asked GPT to extrapolate it to…

    AI · Oct 2025 · blog.shashanktomar.com

  • Orchestra▲793

    A chat-centric workspace for builders and modern teams

    Work · 2025 · orch.so

  • Hey all, I built this. It’s not trying to capture every autistic experience (that’d be impossible). It’s based on my own lived experience as well as that of friends on the spectrum. I'm trying to give people a feel for what masking, decision fatigue, and burnout can look like day-to-day. That’s hard to explain in words, but easier to show through choices and stats. I'm not trying to "define autism". I’ve gotten good feedback here about resilience, meds, and difficulty tuning. I’ll keep tweaking it. If even a few people walk away thinking, "ah, maybe that’s why my coworker struggles in those…

    Life & fun · 2025 · autism-simulator.vercel.app

  • Director▲768

    Lovable for web automation

    AI · 2025 · director.ai