Martin Keller-Ressel
mkellerressel.bsky.social
Martin Keller-Ressel
@mkellerressel.bsky.social
Professor at TU Dresden | Stochastics/Probability, Financial Mathematics, Networks, Hyperbolic Geometry
Wenn er echt ist, ist der Werbespruch genial.
March 31, 2025 at 10:34 AM
Stimme völlig zu. Und es gibt genügend europäische Wissenschaftler in den USA, denen man genau jetzt ein attraktives Rückkehrangebot machen sollte. Das gleiche gilt für die Start-Up-Szene im Silicon Valley.
January 21, 2025 at 10:22 AM
The Disintegration Theorem is already a result of measure theory en.wikipedia.org/wiki/Disinte...
Disintegration theorem - Wikipedia
en.wikipedia.org
January 5, 2025 at 4:24 PM
💡 These bounds enables us to quantify the interplay between optimisation hyperparameters and the tail-index. Doing so, we contribute to the ongoing discussion on links between heavy tails and the generalization performance of neural networks.

Find our paper here: openreview.net/pdf?id=EFrgB...
openreview.net
December 6, 2024 at 10:03 AM

💻 We give explicit upper and lower bounds on the tail-index of the resulting parameter distribution and validate these bounds in numerical experiments.
December 6, 2024 at 10:03 AM
🧮 In our paper, we analyze a continuous diffusion approximation of SGD and show mathematically (in a regularized linear regression framework) that it leads to an asymptotically heavy-tailed parameter distribution, even though local gradient noise is Gaussian.
December 6, 2024 at 10:03 AM

TL;DR: Heavy tailed parameter distributions can emerge from locally Gaussian gradient noise, as we show both theoretically and empirically.

It has repeatedly been observed that loss minimization by stochastic gradient descent (SGD) leads to heavy-tailed distributions of neural network parameters.
December 6, 2024 at 10:03 AM
Reposted by Martin Keller-Ressel
Inzwischen gibt es mehr als 8.000 „Starterpacks“ auf #Bluesky. Starterpacks sind kuratierte Listen von Accounts, denen man mit einem Klick folgen kann. Ihr könnt die 8.000 Starterpacks hier nach Begriffen wie Politik, Journalismus, Geschichte etc. durchsuchen:
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A curated collection of all things relating to the Blue Sky social media platform.
blueskydirectory.com
November 13, 2024 at 5:50 PM