Tootfinder

Data Verbalisation: What is Text Doing in a Data Visualisation?
Paul Murrell
https://arxiv.org/abs/2506.15129 https://arxiv.org/pdf/2…

Data Verbalisation: What is Text Doing in a Data Visualisation?
This article discusses the role that text elements play in a data visualisation. We argue that there is a need for a simple, coherent explanation of text elements similar to the understanding that already exists for non-text elements like bars, points, and lines. We explore examples of how text is used within a data visualisation and use existing knowledge and assessment techniques to evaluate when text is effective and when it is not. The result is a framework that aims to be easy to understan…

RISC-V for HPC: An update of where we are and main action points
Nick Brown
https://arxiv.org/abs/2506.15418 https://arxiv.org/pdf/25…

RISC-V for HPC: An update of where we are and main action points
This extended abstract is submitted on behalf of the RISC-V HPC SIG who have been undertaking an analysis to explore the current state and limitations of the RISC-V ecosystem for HPC. Whilst it is right to celebrate that there has been great progress made in recent years, we also highlight limitations and where effort should be focussed.

Empirical Studies of Large Scale Environment Scanning by Consumer Electronics
Mengyuan Wang, Yang Liu, Haopeng Wang, Haiwei Dong, Abdulmotaleb El Saddik
https://arxiv.org/abs/2506.14771

Empirical Studies of Large Scale Environment Scanning by Consumer Electronics
This paper presents an empirical evaluation of the Matterport Pro3, a consumer-grade 3D scanning device, for large-scale environment reconstruction. We conduct detailed scanning (1,099 scanning points) of a six-floor building (17,567 square meters) and assess the device's effectiveness, limitations, and performance enhancements in diverse scenarios. Challenges encountered during the scanning are addressed through proposed solutions, while we also explore advanced methods to overcome them more e…

Ultraviolet Spectra of Comets: Rejecting the Detection of Pentacene, Toluene, and Fe
Ga\"el Rouill\'e (Astrophysical Institute,University Observatory, Friedrich Schiller University Jena, Schillerg\"asschen Jena, Germany)
https://arxiv.org/abs/2506.15550

Ultraviolet Spectra of Comets: Rejecting the Detection of Pentacene, Toluene, and Fe+
A recent study announced the detection of three bands in the ultraviolet emission spectra of more than a dozen comets, assigning two of them to pentacene (C$_{22}$H$_{14}$) and the third one to toluene (C$_7$H$_8$). The comparison of the spectra with the results of exploitable laboratorymeasurements on rare-gas-matrix-isolated pentacene and on jet-cooled toluene does not reveal elements that would justify the assignment, which is therefore unsubstantiated. The study also claimed the detection o…

Watching the frustratingly fruitless fights over the USEFULNESS of LLM-based coding helpers, I've come down to 3 points that explain why ppl seem to live in different realities:
Most programmers:
1) Write inconsequential remixes of trivial code that has been written many times before.
2) Lack the taste for good design & suck at code review in general (yours truly included).
3) Lack the judgement to differentiate between 1) & FOSS repos of nontrivial code, …

Exploring Economic Sectoral Dynamics Through High-resolution Mobility Data
Timothy F Leslie, Hossein Amiri, Andreas Z\"ufle
https://arxiv.org/abs/2506.13985

Exploring Economic Sectoral Dynamics Through High-resolution Mobility Data
We present a comprehensive dataset capturing patterns of human mobility across the United States from January 2019 to January 2023, based on anonymized mobile device data. Aggregated weekly, the dataset reports visits, travel distances, and time spent at public locations organized by economic sector for approximately 12 million Points of Interest (POIs). This resource enables the study of how mobility and economic activity changed over time, particularly during major events such as the COVID-19…

A simplified algorithmic realization of Galois actions on special values of modular functions
Ja Kyung Koo, Dong Hwa Shin, Dong Sung Yoon
https://arxiv.org/abs/2506.14139

A simplified algorithmic realization of Galois actions on special values of modular functions
We propose an explicit and practical algorithm for computing Galois conjugates and irreducible polynomials for special values of modular functions evaluated at CM points associated with imaginary quadratic orders. Our approach builds upon the theory of extended form class groups developed by Jung et al., offering a refinement of earlier methods by Stevenhagen and Cho, respectively.

When Forgetting Triggers Backdoors: A Clean Unlearning Attack
Marco Arazzi, Antonino Nocera, Vinod P
https://arxiv.org/abs/2506.12522 https://

When Forgetting Triggers Backdoors: A Clean Unlearning Attack
Machine unlearning has emerged as a key component in ensuring ``Right to be Forgotten'', enabling the removal of specific data points from trained models. However, even when the unlearning is performed without poisoning the forget-set (clean unlearning), it can be exploited for stealthy attacks that existing defenses struggle to detect. In this paper, we propose a novel {\em clean} backdoor attack that exploits both the model learning phase and the subsequent unlearning requests. Unlike traditi…

Movable Dirac Points with Ferroelectrics: Kink States and Berry Curvature Dipoles
Konstantin S. Denisov, Yuntian Liu, Igor \v{Z}uti\'c
https://arxiv.org/abs/2506.13960

Movable Dirac Points with Ferroelectrics: Kink States and Berry Curvature Dipoles
Two-dimensional (2D) Dirac states and Dirac points with linear dispersion are the hallmark of graphene, topological insulators, semimetals, and superconductors. Lowering a symmetry by the ferroelectric polarization opens the gap in Dirac points and introduces finite Berry curvature. Combining this with Dirac points detached from high symmetry points of the Brillouin zone offers additional ways to tailor topological properties. We explore this concept by studying topological phenomena emerging i…