Tootfinder

Denoising radio pulses from air showers using machine-learning methods
Aur\'elien Benoit-L\'evy (for the GRAND Collaboration), Zhisen Lai (for the GRAND Collaboration), Oscar Macias (for the GRAND Collaboration), Ars\`ene Ferri\`ere (for the GRAND Collaboration)
https://arxiv.org/abs/2507.06688

Denoising radio pulses from air showers using machine-learning methods
The Giant Radio Array for Neutrino Detection (GRAND) aims to detect radio signals from extensive air showers (EAS) caused by ultra-high-energy (UHE) cosmic particles. Galactic, hardware-like, and anthropogenic noise are expected to contaminate these signals. To address this problem, we propose training a supervised convolutional network known as an encoder-decoder. This network is used to learn a coded representation of the data and remove specific features from it. This denoiser is trained usi…

Strategies for Resource Allocation of Two Competing Companies using Genetic Algorithm
Wing Keung Cheung, Kwok Yip Szeto
https://arxiv.org/abs/2507.02952 ht…

Strategies for Resource Allocation of Two Competing Companies using Genetic Algorithm
We investigate various strategic locations of shops in shopping malls in a metropolis with the aim of finding the best strategy for final dominance of market share by a company in a competing environment. The problem is posed in the context of two competing supermarket chains in a metropolis, described in the framework of the two-dimensional Ising model. Evolutionary Algorithm is used to encode the ensemble of initial configurations and Monte Carlo method is used to evolve the pattern. Numerica…

The Landau equation and Fisher information
Nestor Guillen, Luis Silvestre
https://arxiv.org/abs/2507.05167 https://arxiv.org/pdf/2507…

The Landau equation and Fisher information
In this expository note (submitted to Notices of the AMS) we present the ideas used in our recent work ruling out blow up for the Landau equation with Coulomb potential. Blow up is ruled out by the discovery that the Fisher information is not increasing in time along a solution. This monotonicity is established by means of a new ``lifted equation'' which is an auxiliary linear equation in double the number of variables that encodes the nonlinear nonlocal collision operator. For the Landau equat…

Researchers built the largest Type Ia supernova dataset ever and found a hint that dark energy might evolve over time.
If confirmed, it would be a dramatic departure from Einstein’s cosmological constant.
Type Ia supernovae let us precisely measure cosmic distances and gave us the first evidence of the universe’s accelerating expansion.
Researchers from the Supernova Cosmology Project used a new approach to standardize 2,087 supernovae from different experiments, enabling …

Super Set of Supernovae Suggests Dark Energy Surprise
Researchers built the largest Type Ia supernova dataset ever and found a hint that dark energy might evolve over time. If confirmed, it would be a dramatic departure from Einstein’s cosmological constant.

Compressed Ultrafast Photography of Plasmas Formed from Laser Breakdown of Dense Gases Reveals that Internal Processes Dominate Evolution at Early Times
Peng Wang, Yogeshwar Nath Mishra, Seth Pree, Lihong V. Wang, Dag Hanstorp, John P. Koulakis, Daniels Krimans, Seth Putterman
https://arxiv.org/abs/2507.04608

Compressed Ultrafast Photography of Plasmas Formed from Laser Breakdown of Dense Gases Reveals that Internal Processes Dominate Evolution at Early Times
Compressed ultrafast photography (CUP) is applied to laser breakdown in argon and xenon under pressures up to 40atm to obtain 2D images of the plasma dynamics of single events with a spatial resolution of 250x100 pixels and an equivalent frame rate of 500 GHz. Light emission as a function of position and time is measured through red, green, blue, and broad-band filters. The spatially encoded and temporally sheared image normally used in CUP is now enhanced by the introduction of a constraint gi…

Reframing Pattern: A Comprehensive Approach to a Composite Visual Variable
Tingying He, Jason Dykes, Petra Isenberg, Tobias Isenberg
https://arxiv.org/abs/2508.02639 https://

Reframing Pattern: A Comprehensive Approach to a Composite Visual Variable
We present a new comprehensive theory for explaining, exploring, and using pattern as a visual variable in visualization. Although patterns have long been used for data encoding and continue to be valuable today, their conceptual foundations are precarious: the concepts and terminology used across the research literature and in practice are inconsistent, making it challenging to use patterns effectively and to conduct research to inform their use. To address this problem, we conduct a comprehen…

This https://arxiv.org/abs/2401.01372 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Hopf algebras for the shuffle algebra and fractions from multiple zeta values
The algebra of multiple zeta values (MZVs) is encoded as a stuffle (quasi-shuffle) algebra and a shuffle algebra. The MZV stuffle algebra has a natural Hopf algebra structure. This paper equips a Hopf algebra structure to the MZV shuffle algebra. The needed coproduct is defined by a recursion through a family of weight-increasing linear operators. To verify the Hopf algebra axioms, we make use of a family of fractions, called Chen fractions, that have been used to study MZVs and also serve as t…

Particle Swarm Optimization for Quantum Circuit Synthesis: Performance Analysis and Insights
Mirza Hizriyan Nubli Hidayat, Tan Chye Cheah
https://arxiv.org/abs/2507.02898

Particle Swarm Optimization for Quantum Circuit Synthesis: Performance Analysis and Insights
This paper discusses how particle swarm optimization (PSO) can be used to generate quantum circuits to solve an instance of the MaxOne problem. It then analyzes previous studies on evolutionary algorithms for circuit synthesis. With a brief introduction to PSO, including its parameters and algorithm flow, the paper focuses on a method of quantum circuit encoding and representation as PSO parameters. The fitness evaluation used in this paper is the MaxOne problem. The paper presents experimental…

fact check AI at SemEval-2025 Task 7: Multilingual and Crosslingual Fact-checked Claim Retrieval
Pranshu Rastogi
https://arxiv.org/abs/2508.03475 https://a…

fact check AI at SemEval-2025 Task 7: Multilingual and Crosslingual Fact-checked Claim Retrieval
SemEval-2025 Task 7: Multilingual and Crosslingual Fact-Checked Claim Retrieval is approached as a Learning-to-Rank task using a bi-encoder model fine-tuned from a pre-trained transformer optimized for sentence similarity. Training used both the source languages and their English translations for multilingual retrieval and only English translations for cross-lingual retrieval. Using lightweight models with fewer than 500M parameters and training on Kaggle T4 GPUs, the method achieved 92% Succes…

You know, “this” used to be a perfectly innocent word. Nothing special, but a solid citizen of the grammar ecosystem. Who could have predicted it would turn into a major clickbait villain, meaning “We’re not going to tell you what this article is about until you click on it.”
FWIW I think I’m not alone in consciously avoiding clicking on such links.
#enshittification