Tootfinder

Stop calling this a bloody war. This is not war. It’s genocide. Palestinians are not starving, they are BEING STARVED BY ISRAEL.
#israel #genocide #ethnicCleansing

FORTA: Byzantine-Resilient FL Aggregation via DFT-Guided Krum
Usayd Shahul, J. Harshan
https://arxiv.org/abs/2507.14588 https://arxiv…

FORTA: Byzantine-Resilient FL Aggregation via DFT-Guided Krum
Secure federated learning enables collaborative model training across decentralized users while preserving data privacy. A key component is secure aggregation, which keeps individual updates hidden from both the server and users, while also defending against Byzantine users who corrupt the aggregation. To this end, Jinhyun So et al. recently developed a Byzantine-resilient secure aggregation scheme using a secret-sharing strategy over finite-field arithmetic. However, such an approach can suffe…

Deep learning inference with the Event Horizon Telescope I. Calibration improvements and a comprehensive synthetic data library
M. Janssen, C. -k. Chan, J. Davelaar, I. Natarajan, H. Olivares, B. Ripperda, J. R\"oder, M. Rynge, M. Wielgus
https://arxiv.org/abs/2506.13873

Deep learning inference with the Event Horizon Telescope I. Calibration improvements and a comprehensive synthetic data library
(abridged) In a series of publications, we describe a comprehensive comparison of Event Horizon Telescope (EHT) data with theoretical models of Sgr A* and M87*. Here, we report on improvements made to our observational data reduction pipeline and present the generation of observables derived from the EHT models. We make use of ray-traced GRMHD simulations that are based on different black hole spacetime metrics and accretion physics parameters. These broad classes of models provide a good repre…

Thread about the two Palestinians invited to speak at Kehilla Community Synagogue in Piedmont, who were instead detained at SFO with their visas arbitrarily canceled:
https://social.coop/@raph/114674710005408478

A reminder that R Ben Shapiro (of UW) and I run CERAMICS, a way for outsiders who want to learn about getting into CS Ed research. Read more and apply here!
https://docs.google.com/document/d/e/2PACX-1vQEci1r9iOBv…

Deep learning inference with the Event Horizon Telescope II. The Zingularity framework for Bayesian artificial neural networks
M. Janssen, C. -k. Chan, J. Davelaar, M. Wielgus
https://arxiv.org/abs/2506.13875

Deep learning inference with the Event Horizon Telescope II. The Zingularity framework for Bayesian artificial neural networks
(abridged) In this second paper in our publication series, we present the open-source Zingularity framework for parameter inference with deep Bayesian artificial neural networks. We carried out out supervised learning with synthetic millimeter very long baseline interferometry observations of the EHT. Our ground-truth models are based on GRMHD simulations of Sgr A* and M87* on horizon scales. We investigated how well Zingularity neural networks are able to infer key model parameters from EHT ob…

I finally got rid of the old bed I’d kept since moving in, so the room feels pretty empty right now.
I’m in the process of reorganizing everything and plan to turn this space into my own anarchist sanctuary.
Soon, I’ll add a bookshelf and more anarchist art to the wall, right next to the communist hammer and sickle symbol.
#Declutter

Gravity versus astrophysics in black hole images and photon rings: equatorial emissions and spherically symmetric spacetimes
I. Urso, F. H. Vincent, M. Wielgus, T. Paumard, G. Perrin
https://arxiv.org/abs/2506.13482

Gravity versus astrophysics in black hole images and photon rings: equatorial emissions and spherically symmetric spacetimes
The EHT collaboration released in 2019 the first horizon-scale images of a black hole accretion flow, opening a novel route for plasma physics comprehension and gravitational tests. Although the present unresolved images deeply depend on the astrophysical properties of the accreted matter, GR predicts that they contain highly lensed observables, the "photon rings", embodying the effects of strong-field gravity. Focusing on the supermassive black hole M87* and adopting a geometrically thin, equa…

A note on pliability and the openness of the multiexponential map in Carnot groups
Fr\'ed\'eric Jean (UMA), Mario Sigalotti (LJLL), Alessandro Socionovo (LJLL)
https://arxiv.org/abs/2507.13049

A note on pliability and the openness of the multiexponential map in Carnot groups
In recent years, several notions of non-rigidity of horizontal vectors in Carnot groups have been proposed, motivated, in particular, by the characterization of monotone sets and Whitney extension properties. In this note we compare some of these notions, proving that pliability, strong pliability, and the openness property of the multi-exponential map known as (H)-condition are all equivalent.

Podcast: What To Watch For with Raiders Manadary Mini-Camp on the Horizon https://www.si.com/nfl/raiders/las-vegas-pete-carroll-chip-kelly-patrick-graham-mandatory-minicamp