Tootfinder

This https://arxiv.org/abs/2503.14353 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Unified Analysis of Decentralized Gradient Descent: a Contraction Mapping Framework
The decentralized gradient descent (DGD) algorithm, and its sibling, diffusion, are workhorses in decentralized machine learning, distributed inference and estimation, and multi-agent coordination. We propose a novel, principled framework for the analysis of DGD and diffusion for strongly convex, smooth objectives, and arbitrary undirected topologies, using contraction mappings coupled with a result called the mean Hessian theorem (MHT). The use of these tools yields tight convergence bounds, b…

Today I'll introduce you to the last and oldest sibling of our stray cat offspring: this is Nele, born on May 31st, 2024. As her siblings and her mother, she still lives on our property. #caturday #catcontent

A Sibling of AR Scorpii: SDSS J230641.47$ $244055.8 and the Observational Blueprint of White Dwarf Pulsars
N. Castro Segura, I. Pelisoli, B. T. G\"ansicke, D. L. Coppejans, D. Steeghs, A. Aungwerojwit, K. Inight, A. Romero, A. Sahu, V. S. Dhillon, J. Munday, S. G. Parsons, M. R. Kennedy, M. J. Green, A. J. Brown, M. J. Dyer, E. Pike, J. A. Garbutt, D. Jarvis, P. Kerry, S. P. Littlefair, J. McCormac, D. I. Sahman, D. A. H. Buckley

A Sibling of AR Scorpii: SDSS J230641.47$+$244055.8 and the Observational Blueprint of White Dwarf Pulsars
Radio pulsating white dwarf (WD) systems, known as WD pulsars, are non-accreting binary systems where the rapidly spinning WD interacts with a low-mass companion producing pulsed non-thermal emission that can be observed across the entire electromagnetic spectrum. Only two such systems are known: AR Sco and eRASSU J191213.9$-$441044. Here we present the discovery of a third WD pulsar, SDSS J230641.47$+$244055.8. The optical spectrum is dominated by molecular bands from an M-dwarf companion, wit…

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I've found a photo of your long lost sibling.
Though I ate them in 2018.

This spin reminds me when we looked at the script kiddies trying to hack our Dec-cluster with copied linux exploits 😅
https://mastodon.social/@dw_innovation/114663563572107178

Parenthood Penalty in Russia: Evidence from Exogenous Variation in Family Size
Vadim Ustyuzhanin
https://arxiv.org/abs/2506.11858 https://

Parenthood Penalty in Russia: Evidence from Exogenous Variation in Family Size
The present study aimed to improve upon the existing correlational literature on the parenthood penalty in Russia. An instrumental variables approach based on sibling sex composition and multiple births was employed alongside difference-in-differences designs to analyze rich census and longitudinal datasets. To the best of the authors' knowledge, this is the first study to provide causal estimates of the effect of fertility decisions on subsequent labor market outcomes for mothers and fathers i…